Peripheral Port Memory Remap Register

最新推荐文章于 2020-12-29 04:55:49 发布
转载 最新推荐文章于 2020-12-29 04:55:49 发布 · 816 阅读 · 0

本文详细介绍了ARM11处理器中外围设备端口内存重映射寄存器的作用与使用方法，解释了如何通过该寄存器设置外设寄存器的基地址和地址空间。

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原文转自：http://blog.youkuaiyun.com/tianxiawuzhei/article/details/7654101

原文作者：tianxiawuzhei

版权声明：原创文章，请注明出处。

目录(?)[+]

1、今天在看三星的uboot-1.1.6（s3c6410）的源码，start.s文件时，看到一段代码，如下所示：

        /* Peri port setup */
ldr r0, =0x70000000
orr r0, r0, #0x13
     mcr  p15,0,r0,c15,c2,4       @ 256M(0x70000000-0x7fffffff)

当时很疑惑，不知道这段代码有什么用，经过一番查找，原来和ARM的协处理器有关，如下所示：

c15, Peripheral Port Memory Remap Register。

其实，arm11把memory和Peripheral接口分开了，上面的代码在初始化是告诉CPU外设寄存器的基地址和地址空间。

2、c15, Peripheral Port Memory Remap Register -----  摘于ARM1176手册

The purpose of the Peripheral Port Memory Remap Register is to remap the memory attributes to Non-Shared Device. This forces access to the peripheral port and overrides what is programmed in the page tables. The remapping happens both with the MMU enabled and with the MMU disabled, therefore you can remap the peripheral port even when you do not use the MMU. The Peripheral Port Memory Remap Register has the highest priority, higher than that of the Primary and Normal memory remap registers.

Table 3.132 lists the purposes of the individual bits in the Peripheral Port Memory Remap Register.

The Peripheral Port Memory Remap Register is:

  • in CP15 c15

  • a 32-bit read/write register banked for Secure and Non-secure worlds

  • accessible in privileged modes only.

Figure 3.71 shows the arrangement of the bits in the register.

Figure 3.71. Peripheral Port Memory Remap Register format


Table 3.132 lists how the bit values correspond with the functions of the Peripheral Port Memory Remap Register.

Table 3.132. Peripheral Port Memory Remap Register bit functions

Bits Field name Function
[31:12] Base Address

Gives the physical base address of the region of memory for remapping to the peripheral port. If the processor uses the Peripheral Port Memory Remap Register while the MMU is disabled, the virtual base address is equal to the physical base address that is used.

The assumption is that the Base Address is aligned to the size of the remapped region. Any bits in the range [(log2(Region size)-1):12] are ignored.

The value is the base address. The reset value is 0.

[11:5] -

UNP/SBZ

[4:0] Size

Indicates the size of the memory region that the peripheral port is remapped to.

All other values are reserved:

b00000 = 0KB[a]

b00011 = 4KB

b00100 = 8KB

b00101 = 16KB

b00110 = 32KB

b00111 = 64KB

b01000 = 128KB

b01001 = 256KB

b01010 = 512KB

b01011 = 1MB

b01100 = 2MB

b01101 = 4MB

b01110 = 8MB

b01111 = 16MB

b10000 = 32MB

b10001 = 64MB

b10010 = 128MB

b10011 = 256MB

b10100 = 512MB

b10101 = 1GB

b10110 = 2GB.

[a] The reset value, indicating that no remapping is to take place.


Attempts to write to this register in Secure Privileged mode when CP15SDISABLE is HIGH result in an Undefined exception, see TrustZone write access disable.

Table 3.133 lists the results of attempted access for each mode.

Table 3.133. Results of access to the Peripheral Port Remap Register

Secure Privileged Non-secure Privileged User
Read Write Read Write
Secure data Secure data Non-secure data Non-secure data Undefined exception

To use the memory remap registers read or write CP15 with:

  • Opcode_1 set to 0

  • CRn set to c15

  • CRm set to c2

  • Opcode_2 set to 4.

For example:

MRC p15, 0, <Rd>, c15, c2, 4    ; Read Peripheral Port Memory Remap Register

MCR p15, 0, <Rd>, c15, c2, 4    ; Write Peripheral Port Memory Remap Register
<span style="font-size: 24px;"><strong>3、</strong></span><span style="font-size: 18px; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;">Using the Peripheral Port Memory Remap Register   -----摘于ARM1173手册</span><p style="font-size: 18px; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif; margin-top: 0.4em !important; margin-bottom: 0.2em !important;">You use this register to remap the peripheral port.</p><p style="font-size: 18px; margin-top: 0.8em; margin-bottom: 0.2em; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;">The peripheral port is accessed by memory locations whose page table attributes are Non-Shared Device. You can program a region of memory to be remapped to being Non-Shared Device while the MMU is disabled to provide access to the peripheral port when the MMU is disabled. In addition, the same mechanism will override the page table entries, providing an additional mechanism for accessing the peripheral port. This mechanism is suitable for operating systems where access to the page table formats is not readily available.</p><p style="font-size: 18px; margin-top: 0.8em; margin-bottom: 0.2em; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;">The use of the remapping of the peripheral port will change the memory region used for those memory locations that are remapped to be Non-Shared Device, regardless of what has been programmed in the page tables.</p><p style="font-size: 18px; margin-top: 0.8em; margin-bottom: 0.2em; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;">If the region of memory mapped by this mechanism overlaps with the regions of memory that are contained within the TCMs not marked as SmartCache, then the memory locations that are mapped as both TCM and Non-Shared Device are treated as TCM. Therefore, the overlapping region does not access the peripheral port.</p><p style="font-size: 18px; margin-top: 0.8em; margin-bottom: 0.2em; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;">If the region of memory mapped by this mechanism overlaps with the regions of memory that are contained within the TCMs marked as SmartCache, then the memory locations that are mapped as both TCM and Non-Shared Device are treated as Non-Shared Device, and the SmartCache functionality is not used enabled for those addresses.</p><p style="font-size: 18px; margin-top: 0.8em; margin-bottom: 0.2em; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;">The peripheral port is only used by data accesses. Unaligned accesses and exclusive accesses are not supported by the peripheral port (because they are not supported in Device memory), and attempting to perform such accesses has Unpredictable results when using the peripheral port as a result of the Peripheral Port Memory Remap Register.</p><p style="font-size: 18px; margin-top: 0.8em; margin-bottom: 0.2em; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;">Any remapping on Non-Shared Device memory by the Data Memory Remap Register has no effect on regions mapped to Non-Shared Device by the Peripheral Port Memory Remap Register.</p><p style="font-size: 18px; margin-top: 0.8em; margin-bottom: 0.2em; font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;">To entirely disable the peripheral port, the Peripheral Port Memory Remap Register must be programmed to 0 size and page table entries of type Non-Shared Device must be avoided.</p>



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(end_addr - current_addr) : W25Q128FV_PAGE_SIZE; } while (current_addr < end_addr); return W25Qx_OK; } /** * @brief Erases the specified block of the QSPI memory. * @param BlockAddress: Block address to erase * @retval QSPI memory status */ uint8_t BSP_W25Qx_Erase_Block(uint32_t Address) { uint8_t cmd[4]; uint32_t tickstart = HAL_GetTick(); cmd[0] = SECTOR_ERASE_CMD; cmd[1] = (uint8_t)(Address >> 16); cmd[2] = (uint8_t)(Address >> 8); cmd[3] = (uint8_t)(Address); /* Enable write operations */ BSP_W25Qx_WriteEnable(); /*Select the FLASH: Chip Select low */ W25Qx_Enable(); /* Send the read ID command */ HAL_SPI_Transmit(&hspi2, cmd, 4, W25Qx_TIMEOUT_VALUE); /*Deselect the FLASH: Chip Select high */ W25Qx_Disable(); /* Wait the end of Flash writing */ while(BSP_W25Qx_GetStatus() == W25Qx_BUSY); { /* Check for the Timeout */ if((HAL_GetTick() - tickstart) > W25Q128FV_SECTOR_ERASE_MAX_TIME) { return W25Qx_TIMEOUT; } } return W25Qx_OK; } /** * @brief Erases the entire QSPI memory.This function will take a very long time. * @retval QSPI memory status */ uint8_t BSP_W25Qx_Erase_Chip(void) { uint8_t cmd[4]; uint32_t tickstart = HAL_GetTick(); cmd[0] = SECTOR_ERASE_CMD; /* Enable write operations */ BSP_W25Qx_WriteEnable(); /*Select the FLASH: Chip Select low */ W25Qx_Enable(); /* Send the read ID command */ HAL_SPI_Transmit(&hspi2, cmd, 1, W25Qx_TIMEOUT_VALUE); /*Deselect the FLASH: Chip Select high */ W25Qx_Disable(); /* Wait the end of Flash writing */ while(BSP_W25Qx_GetStatus() != W25Qx_BUSY); { /* Check for the Timeout */ if((HAL_GetTick() - tickstart) > W25Q128FV_BULK_ERASE_MAX_TIME) { return W25Qx_TIMEOUT; } } return W25Qx_OK; } /********************************************************************************************************* * * File : W25Qx.h * Hardware Environment: * Build Environment : RealView MDK-ARM Version: 5.15 * Version : V1.0 * By : * * (c) Copyright 2005-2015, WaveShare * http://www.waveshare.net * All Rights Reserved * *********************************************************************************************************/ /* Define to prevent recursive inclusion -------------------------------------*/ #ifndef __W25QXX_H #define __W25QXX_H #ifdef __cplusplus extern "C" { #endif /* Includes ------------------------------------------------------------------*/ #include "stm32f1xx.h" #include "spi.h" /** @addtogroup BSP * @{ */ /** @addtogroup Components * @{ */ /** @addtogroup W25Q128FV * @{ */ /** @defgroup W25Q128FV_Exported_Types * @{ */ /** * @} */ /** @defgroup W25Q128FV_Exported_Constants * @{ */ /** * @brief W25Q128FV Configuration */ #define W25Q128FV_FLASH_SIZE 0x1000000 /* 128 MBits => 16MBytes */ #define W25Q128FV_SECTOR_SIZE 0x10000 /* 256 sectors of 64KBytes */ #define W25Q128FV_SUBSECTOR_SIZE 0x1000 /* 4096 subsectors of 4kBytes */ #define W25Q128FV_PAGE_SIZE 0x100 /* 65536 pages of 256 bytes */ #define W25Q128FV_DUMMY_CYCLES_READ 4 #define W25Q128FV_DUMMY_CYCLES_READ_QUAD 10 #define W25Q128FV_BULK_ERASE_MAX_TIME 250000 #define W25Q128FV_SECTOR_ERASE_MAX_TIME 3000 #define W25Q128FV_SUBSECTOR_ERASE_MAX_TIME 800 #define W25Qx_TIMEOUT_VALUE 1000 /** * @brief W25Q128FV Commands */ /* Reset Operations */ #define RESET_ENABLE_CMD 0x66 #define RESET_MEMORY_CMD 0x99 #define ENTER_QPI_MODE_CMD 0x38 #define EXIT_QPI_MODE_CMD 0xFF /* Identification Operations */ #define READ_ID_CMD 0x90 #define DUAL_READ_ID_CMD 0x92 #define QUAD_READ_ID_CMD 0x94 #define READ_JEDEC_ID_CMD 0x9F /* Read Operations */ #define READ_CMD 0x03 #define FAST_READ_CMD 0x0B #define DUAL_OUT_FAST_READ_CMD 0x3B #define DUAL_INOUT_FAST_READ_CMD 0xBB #define QUAD_OUT_FAST_READ_CMD 0x6B #define QUAD_INOUT_FAST_READ_CMD 0xEB /* Write Operations */ #define WRITE_ENABLE_CMD 0x06 #define WRITE_DISABLE_CMD 0x04 /* Register Operations */ #define READ_STATUS_REG1_CMD 0x05 #define READ_STATUS_REG2_CMD 0x35 #define READ_STATUS_REG3_CMD 0x15 #define WRITE_STATUS_REG1_CMD 0x01 #define WRITE_STATUS_REG2_CMD 0x31 #define WRITE_STATUS_REG3_CMD 0x11 /* Program Operations */ #define PAGE_PROG_CMD 0x02 #define QUAD_INPUT_PAGE_PROG_CMD 0x32 /* Erase Operations */ #define SECTOR_ERASE_CMD 0x20 #define CHIP_ERASE_CMD 0xC7 #define PROG_ERASE_RESUME_CMD 0x7A #define PROG_ERASE_SUSPEND_CMD 0x75 /* Flag Status Register */ #define W25Q128FV_FSR_BUSY ((uint8_t)0x01) /*!< busy */ #define W25Q128FV_FSR_WREN ((uint8_t)0x02) /*!< write enable */ #define W25Q128FV_FSR_QE ((uint8_t)0x02) /*!< quad enable */ #define W25Qx_Enable() HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET) #define W25Qx_Disable() HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET) #define W25Qx_OK ((uint8_t)0x00) #define W25Qx_ERROR ((uint8_t)0x01) #define W25Qx_BUSY ((uint8_t)0x02) #define W25Qx_TIMEOUT ((uint8_t)0x03) uint8_t BSP_W25Qx_Init(void); static void BSP_W25Qx_Reset(void); static uint8_t BSP_W25Qx_GetStatus(void); uint8_t BSP_W25Qx_WriteEnable(void); void BSP_W25Qx_Read_ID(uint8_t *ID); uint8_t BSP_W25Qx_Read(uint8_t* pData, uint32_t ReadAddr, uint32_t Size); uint8_t BSP_W25Qx_Write(uint8_t* pData, uint32_t WriteAddr, uint32_t Size); uint8_t BSP_W25Qx_Erase_Block(uint32_t Address); uint8_t BSP_W25Qx_Erase_Chip(void); /** * @} */ /** @defgroup W25Q128FV_Exported_Functions * @{ */ /** * @} */ /** * @} */ /** * @} */ /** * @} */ #ifdef __cplusplus } #endif #endif /* __W25Qx_H */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include "spi.h" #include "usart.h" #include "gpio.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include "stm32f1xx_hal.h" #include <stdio.h> #include <string.h> #include "W25QXX.h" uint8_t wData[0x100]; uint8_t rData[0x100]; uint32_t i; uint8_t ID[2]; extern UART_HandleTypeDef huart1; //声明串口 /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ /** * 函数功能: 重定向c库函数printf到DEBUG_USARTx * 输入参数: 无 * 返 回 值: 无 * 说 明：无 */ int fputc(int ch, FILE *f) { HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xffff); return ch; } /** * 函数功能: 重定向c库函数getchar,scanf到DEBUG_USARTx * 输入参数: 无 * 返 回 值: 无 * 说 明：无 */ int fgetc(FILE *f) { uint8_t ch = 0; HAL_UART_Receive(&huart1, &ch, 1, 0xffff); return ch; } /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /** * @brief The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_SPI2_Init(); MX_USART1_UART_Init(); /* USER CODE BEGIN 2 */ printf("\r\n SPI-W25Qxxx Example \r\n\r\n"); /*##-1- Read the device ID ########################*/ BSP_W25Qx_Init(); BSP_W25Qx_Read_ID(ID); printf(" W25Qxxx ID is : 0x%02X 0x%02X \r\n\r\n",ID[0],ID[1]); /*##-2- Erase Block ##################################*/ if(BSP_W25Qx_Erase_Block(0) == W25Qx_OK) printf(" SPI Erase Block ok\r\n"); else Error_Handler(); /*##-3- Written to the flash ########################*/ /* fill buffer */ for(i =0;i<0x100;i ++) { wData[i] = i; rData[i] = 0; } if(BSP_W25Qx_Write(wData,0x00,0x100)== W25Qx_OK) printf(" SPI Write ok\r\n"); else Error_Handler(); /*##-4- Read the flash ########################*/ if(BSP_W25Qx_Read(rData,0x00,0x100)== W25Qx_OK) printf(" SPI Read ok\r\n\r\n"); else Error_Handler(); printf("SPI Read Data : \r\n"); for(i =0;i<0x100;i++) printf("0x%02X ",rData[i]); printf("\r\n\r\n"); /*##-5- check date ########################*/ if(memcmp(wData,rData,0x100) == 0 ) printf(" W25Q128FV SPI Test OK\r\n"); else printf(" W25Q128FV SPI Test False\r\n"); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ } /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /** Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /** Initializes the CPU, AHB and APB buses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) { Error_Handler(); } } /* USER CODE BEGIN 4 */ /* USER CODE END 4 */ /** * @brief This function is executed in case of error occurrence. * @retval None */ void Error_Handler(void) { /* USER CODE BEGIN Error_Handler_Debug */ /* User can add his own implementation to report the HAL error return state */ __disable_irq(); while (1) { } /* USER CODE END Error_Handler_Debug */ } #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval None */ void assert_failed(uint8_t *file, uint32_t line) { /* USER CODE BEGIN 6 */ /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* USER CODE END 6 */ } #endif /* USE_FULL_ASSERT */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file gpio.c * @brief This file provides code for the configuration * of all used GPIO pins. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "gpio.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /*----------------------------------------------------------------------------*/ /* Configure GPIO */ /*----------------------------------------------------------------------------*/ /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /** Configure pins as * Analog * Input * Output * EVENT_OUT * EXTI */ void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOD_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(SPI2_CS_GPIO_Port, SPI2_CS_Pin, GPIO_PIN_RESET); /*Configure GPIO pin : PtPin */ GPIO_InitStruct.Pin = SPI2_CS_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(SPI2_CS_GPIO_Port, &GPIO_InitStruct); } /* USER CODE BEGIN 2 */ /* USER CODE END 2 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file spi.c * @brief This file provides code for the configuration * of the SPI instances. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "spi.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ SPI_HandleTypeDef hspi2; /* SPI2 init function */ void MX_SPI2_Init(void) { /* USER CODE BEGIN SPI2_Init 0 */ /* USER CODE END SPI2_Init 0 */ /* USER CODE BEGIN SPI2_Init 1 */ /* USER CODE END SPI2_Init 1 */ hspi2.Instance = SPI2; hspi2.Init.Mode = SPI_MODE_MASTER; hspi2.Init.Direction = SPI_DIRECTION_2LINES; hspi2.Init.DataSize = SPI_DATASIZE_8BIT; hspi2.Init.CLKPolarity = SPI_POLARITY_LOW; hspi2.Init.CLKPhase = SPI_PHASE_1EDGE; hspi2.Init.NSS = SPI_NSS_SOFT; hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64; hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB; hspi2.Init.TIMode = SPI_TIMODE_DISABLE; hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; hspi2.Init.CRCPolynomial = 10; if (HAL_SPI_Init(&hspi2) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN SPI2_Init 2 */ /* USER CODE END SPI2_Init 2 */ } void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; if(spiHandle->Instance==SPI2) { /* USER CODE BEGIN SPI2_MspInit 0 */ /* USER CODE END SPI2_MspInit 0 */ /* SPI2 clock enable */ __HAL_RCC_SPI2_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); /**SPI2 GPIO Configuration PB13 ------> SPI2_SCK PB14 ------> SPI2_MISO PB15 ------> SPI2_MOSI */ GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_15; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_14; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /* USER CODE BEGIN SPI2_MspInit 1 */ /* USER CODE END SPI2_MspInit 1 */ } } void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle) { if(spiHandle->Instance==SPI2) { /* USER CODE BEGIN SPI2_MspDeInit 0 */ /* USER CODE END SPI2_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_SPI2_CLK_DISABLE(); /**SPI2 GPIO Configuration PB13 ------> SPI2_SCK PB14 ------> SPI2_MISO PB15 ------> SPI2_MOSI */ HAL_GPIO_DeInit(GPIOB, GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15); /* USER CODE BEGIN SPI2_MspDeInit 1 */ /* USER CODE END SPI2_MspDeInit 1 */ } } /* USER CODE BEGIN 1 */ /* USER CODE END 1 *//* USER CODE BEGIN Header */ /** ****************************************************************************** * @file usart.c * @brief This file provides code for the configuration * of the USART instances. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "usart.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ UART_HandleTypeDef huart1; /* USART1 init function */ void MX_USART1_UART_Init(void) { /* USER CODE BEGIN USART1_Init 0 */ /* USER CODE END USART1_Init 0 */ /* USER CODE BEGIN USART1_Init 1 */ /* USER CODE END USART1_Init 1 */ huart1.Instance = USART1; huart1.Init.BaudRate = 115200; huart1.Init.WordLength = UART_WORDLENGTH_8B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart1) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN USART1_Init 2 */ /* USER CODE END USART1_Init 2 */ } void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspInit 0 */ /* USER CODE END USART1_MspInit 0 */ /* USART1 clock enable */ __HAL_RCC_USART1_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ GPIO_InitStruct.Pin = GPIO_PIN_9; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_10; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /* USER CODE BEGIN USART1_MspInit 1 */ /* USER CODE END USART1_MspInit 1 */ } } void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle) { if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspDeInit 0 */ /* USER CODE END USART1_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_USART1_CLK_DISABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10); /* USER CODE BEGIN USART1_MspDeInit 1 */ /* USER CODE END USART1_MspDeInit 1 */ } } /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file usart.c * @brief This file provides code for the configuration * of the USART instances. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "usart.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ UART_HandleTypeDef huart1; /* USART1 init function */ void MX_USART1_UART_Init(void) { /* USER CODE BEGIN USART1_Init 0 */ /* USER CODE END USART1_Init 0 */ /* USER CODE BEGIN USART1_Init 1 */ /* USER CODE END USART1_Init 1 */ huart1.Instance = USART1; huart1.Init.BaudRate = 115200; huart1.Init.WordLength = UART_WORDLENGTH_8B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart1) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN USART1_Init 2 */ /* USER CODE END USART1_Init 2 */ } void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspInit 0 */ /* USER CODE END USART1_MspInit 0 */ /* USART1 clock enable */ __HAL_RCC_USART1_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ GPIO_InitStruct.Pin = GPIO_PIN_9; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_10; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /* USER CODE BEGIN USART1_MspInit 1 */ /* USER CODE END USART1_MspInit 1 */ } } void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle) { if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspDeInit 0 */ /* USER CODE END USART1_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_USART1_CLK_DISABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10); /* USER CODE BEGIN USART1_MspDeInit 1 */ /* USER CODE END USART1_MspDeInit 1 */ } } /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file usart.c * @brief This file provides code for the configuration * of the USART instances. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "usart.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ UART_HandleTypeDef huart1; /* USART1 init function */ void MX_USART1_UART_Init(void) { /* USER CODE BEGIN USART1_Init 0 */ /* USER CODE END USART1_Init 0 */ /* USER CODE BEGIN USART1_Init 1 */ /* USER CODE END USART1_Init 1 */ huart1.Instance = USART1; huart1.Init.BaudRate = 115200; huart1.Init.WordLength = UART_WORDLENGTH_8B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart1) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN USART1_Init 2 */ /* USER CODE END USART1_Init 2 */ } void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspInit 0 */ /* USER CODE END USART1_MspInit 0 */ /* USART1 clock enable */ __HAL_RCC_USART1_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ GPIO_InitStruct.Pin = GPIO_PIN_9; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_10; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /* USER CODE BEGIN USART1_MspInit 1 */ /* USER CODE END USART1_MspInit 1 */ } } void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle) { if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspDeInit 0 */ /* USER CODE END USART1_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_USART1_CLK_DISABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10); /* USER CODE BEGIN USART1_MspDeInit 1 */ /* USER CODE END USART1_MspDeInit 1 */ } } /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file stm32f1xx_it.c * @brief Interrupt Service Routines. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include "stm32f1xx_it.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN TD */ /* USER CODE END TD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /* External variables --------------------------------------------------------*/ /* USER CODE BEGIN EV */ /* USER CODE END EV */ /******************************************************************************/ /* Cortex-M3 Processor Interruption and Exception Handlers */ /******************************************************************************/ /** * @brief This function handles Non maskable interrupt. */ void NMI_Handler(void) { /* USER CODE BEGIN NonMaskableInt_IRQn 0 */ /* USER CODE END NonMaskableInt_IRQn 0 */ /* USER CODE BEGIN NonMaskableInt_IRQn 1 */ while (1) { } /* USER CODE END NonMaskableInt_IRQn 1 */ } /** * @brief This function handles Hard fault interrupt. */ void HardFault_Handler(void) { /* USER CODE BEGIN HardFault_IRQn 0 */ /* USER CODE END HardFault_IRQn 0 */ while (1) { /* USER CODE BEGIN W1_HardFault_IRQn 0 */ /* USER CODE END W1_HardFault_IRQn 0 */ } } /** * @brief This function handles Memory management fault. */ void MemManage_Handler(void) { /* USER CODE BEGIN MemoryManagement_IRQn 0 */ /* USER CODE END MemoryManagement_IRQn 0 */ while (1) { /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */ /* USER CODE END W1_MemoryManagement_IRQn 0 */ } } /** * @brief This function handles Prefetch fault, memory access fault. */ void BusFault_Handler(void) { /* USER CODE BEGIN BusFault_IRQn 0 */ /* USER CODE END BusFault_IRQn 0 */ while (1) { /* USER CODE BEGIN W1_BusFault_IRQn 0 */ /* USER CODE END W1_BusFault_IRQn 0 */ } } /** * @brief This function handles Undefined instruction or illegal state. */ void UsageFault_Handler(void) { /* USER CODE BEGIN UsageFault_IRQn 0 */ /* USER CODE END UsageFault_IRQn 0 */ while (1) { /* USER CODE BEGIN W1_UsageFault_IRQn 0 */ /* USER CODE END W1_UsageFault_IRQn 0 */ } } /** * @brief This function handles System service call via SWI instruction. */ void SVC_Handler(void) { /* USER CODE BEGIN SVCall_IRQn 0 */ /* USER CODE END SVCall_IRQn 0 */ /* USER CODE BEGIN SVCall_IRQn 1 */ /* USER CODE END SVCall_IRQn 1 */ } /** * @brief This function handles Debug monitor. */ void DebugMon_Handler(void) { /* USER CODE BEGIN DebugMonitor_IRQn 0 */ /* USER CODE END DebugMonitor_IRQn 0 */ /* USER CODE BEGIN DebugMonitor_IRQn 1 */ /* USER CODE END DebugMonitor_IRQn 1 */ } /** * @brief This function handles Pendable request for system service. */ void PendSV_Handler(void) { /* USER CODE BEGIN PendSV_IRQn 0 */ /* USER CODE END PendSV_IRQn 0 */ /* USER CODE BEGIN PendSV_IRQn 1 */ /* USER CODE END PendSV_IRQn 1 */ } /** * @brief This function handles System tick timer. */ void SysTick_Handler(void) { /* USER CODE BEGIN SysTick_IRQn 0 */ /* USER CODE END SysTick_IRQn 0 */ HAL_IncTick(); /* USER CODE BEGIN SysTick_IRQn 1 */ /* USER CODE END SysTick_IRQn 1 */ } /******************************************************************************/ /* STM32F1xx Peripheral Interrupt Handlers */ /* Add here the Interrupt Handlers for the used peripherals. */ /* For the available peripheral interrupt handler names, */ /* please refer to the startup file (startup_stm32f1xx.s). */ /******************************************************************************/ /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file stm32f1xx_hal_msp.c * @brief This file provides code for the MSP Initialization * and de-Initialization codes. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /* USER CODE BEGIN Includes */ /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN TD */ /* USER CODE END TD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN Define */ /* USER CODE END Define */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN Macro */ /* USER CODE END Macro */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* External functions --------------------------------------------------------*/ /* USER CODE BEGIN ExternalFunctions */ /* USER CODE END ExternalFunctions */ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /** * Initializes the Global MSP. */ void HAL_MspInit(void) { /* USER CODE BEGIN MspInit 0 */ /* USER CODE END MspInit 0 */ __HAL_RCC_AFIO_CLK_ENABLE(); __HAL_RCC_PWR_CLK_ENABLE(); /* System interrupt init*/ /** NOJTAG: JTAG-DP Disabled and SW-DP Enabled */ __HAL_AFIO_REMAP_SWJ_NOJTAG(); /* USER CODE BEGIN MspInit 1 */ /* USER CODE END MspInit 1 */ } /* USER CODE BEGIN 1 */ /* USER CODE END 1 */
07-16
- 等待忙状态（Read Status Register）: 0x05 在读写之前需要确保Flash不处于忙状态（状态寄存器的BUSY位为0）。 2. **检查函数实现** - 通常，每个操作都需要先发送命令，然后发送地址（如果需要），再发送或...
/********************************************************************************************************* * * File : W25Qx.h * Hardware Environment: * Build Environment : RealView MDK-ARM Version: 5.15 * Version : V1.0 * By : * * (c) Copyright 2005-2015, WaveShare * http://www.waveshare.net * All Rights Reserved * *********************************************************************************************************/ /* Define to prevent recursive inclusion -------------------------------------*/ #ifndef __W25QXX_H #define __W25QXX_H #ifdef __cplusplus extern "C" { #endif /* Includes ------------------------------------------------------------------*/ #include "stm32f1xx.h" #include "spi.h" /** @addtogroup BSP * @{ */ /** @addtogroup Components * @{ */ /** @addtogroup W25Q128FV * @{ */ /** @defgroup W25Q128FV_Exported_Types * @{ */ /** * @} */ /** @defgroup W25Q128FV_Exported_Constants * @{ */ /** * @brief W25Q128FV Configuration */ #define W25Q128FV_FLASH_SIZE 0x1000000 /* 128 MBits => 16MBytes */ #define W25Q128FV_SECTOR_SIZE 0x10000 /* 256 sectors of 64KBytes */ #define W25Q128FV_SUBSECTOR_SIZE 0x1000 /* 4096 subsectors of 4kBytes */ #define W25Q128FV_PAGE_SIZE 0x100 /* 65536 pages of 256 bytes */ #define W25Q128FV_DUMMY_CYCLES_READ 4 #define W25Q128FV_DUMMY_CYCLES_READ_QUAD 10 #define W25Q128FV_BULK_ERASE_MAX_TIME 250000 #define W25Q128FV_SECTOR_ERASE_MAX_TIME 3000 #define W25Q128FV_SUBSECTOR_ERASE_MAX_TIME 800 #define W25Qx_TIMEOUT_VALUE 1000 /** * @brief W25Q128FV Commands */ /* Reset Operations */ #define RESET_ENABLE_CMD 0x66 #define RESET_MEMORY_CMD 0x99 #define ENTER_QPI_MODE_CMD 0x38 #define EXIT_QPI_MODE_CMD 0xFF /* Identification Operations */ #define READ_ID_CMD 0x90 #define DUAL_READ_ID_CMD 0x92 #define QUAD_READ_ID_CMD 0x94 #define READ_JEDEC_ID_CMD 0x9F /* Read Operations */ #define READ_CMD 0x03 #define FAST_READ_CMD 0x0B #define DUAL_OUT_FAST_READ_CMD 0x3B #define DUAL_INOUT_FAST_READ_CMD 0xBB #define QUAD_OUT_FAST_READ_CMD 0x6B #define QUAD_INOUT_FAST_READ_CMD 0xEB /* Write Operations */ #define WRITE_ENABLE_CMD 0x06 #define WRITE_DISABLE_CMD 0x04 /* Register Operations */ #define READ_STATUS_REG1_CMD 0x05 #define READ_STATUS_REG2_CMD 0x35 #define READ_STATUS_REG3_CMD 0x15 #define WRITE_STATUS_REG1_CMD 0x01 #define WRITE_STATUS_REG2_CMD 0x31 #define WRITE_STATUS_REG3_CMD 0x11 /* Program Operations */ #define PAGE_PROG_CMD 0x02 #define QUAD_INPUT_PAGE_PROG_CMD 0x32 /* Erase Operations */ #define SECTOR_ERASE_CMD 0x20 #define CHIP_ERASE_CMD 0xC7 #define PROG_ERASE_RESUME_CMD 0x7A #define PROG_ERASE_SUSPEND_CMD 0x75 /* Flag Status Register */ #define W25Q128FV_FSR_BUSY ((uint8_t)0x01) /*!< busy */ #define W25Q128FV_FSR_WREN ((uint8_t)0x02) /*!< write enable */ #define W25Q128FV_FSR_QE ((uint8_t)0x02) /*!< quad enable */ #define W25Qx_Enable() HAL_GPIO_WritePin(SPI1_CS_GPIO_Port, SPI1_CS_Pin, GPIO_PIN_RESET) #define W25Qx_Disable() HAL_GPIO_WritePin(SPI1_CS_GPIO_Port, SPI1_CS_Pin, GPIO_PIN_SET) #define W25Qx_OK ((uint8_t)0x00) #define W25Qx_ERROR ((uint8_t)0x01) #define W25Qx_BUSY ((uint8_t)0x02) #define W25Qx_TIMEOUT ((uint8_t)0x03) uint8_t BSP_W25Qx_Init(void); static void BSP_W25Qx_Reset(void); static uint8_t BSP_W25Qx_GetStatus(void); uint8_t BSP_W25Qx_WriteEnable(void); void BSP_W25Qx_Read_ID(uint8_t *ID); uint8_t BSP_W25Qx_Read(uint8_t* pData, uint32_t ReadAddr, uint32_t Size); uint8_t BSP_W25Qx_Write(uint8_t* pData, uint32_t WriteAddr, uint32_t Size); uint8_t BSP_W25Qx_Erase_Block(uint32_t Address); uint8_t BSP_W25Qx_Erase_Chip(void); /** * @} */ /** @defgroup W25Q128FV_Exported_Functions * @{ */ /** * @} */ /** * @} */ /** * @} */ /** * @} */ #ifdef __cplusplus } #endif #endif /* __W25Qx_H */ /********************************************************************************************************* * * File : ws_W25Qx.c * Hardware Environment: * Build Environment : RealView MDK-ARM Version: 4.20 * Version : V1.0 * By : * * (c) Copyright 2005-2011, WaveShare * http://www.waveshare.net * All Rights Reserved * *********************************************************************************************************/ #include "W25QXX.h" /** * @brief Initializes the W25Q128FV interface. * @retval None */ uint8_t BSP_W25Qx_Init(void) { /* Reset W25Qxxx */ BSP_W25Qx_Reset(); return BSP_W25Qx_GetStatus(); } /** * @brief This function reset the W25Qx. * @retval None */ static void BSP_W25Qx_Reset(void) { uint8_t cmd[2] = {RESET_ENABLE_CMD,RESET_MEMORY_CMD}; W25Qx_Enable(); /* Send the reset command */ HAL_SPI_Transmit(&hspi1, cmd, 2, W25Qx_TIMEOUT_VALUE); W25Qx_Disable(); } /** * @brief Reads current status of the W25Q128FV. * @retval W25Q128FV memory status */ static uint8_t BSP_W25Qx_GetStatus(void) { uint8_t cmd[] = {READ_STATUS_REG1_CMD}; uint8_t status; W25Qx_Enable(); /* Send the read status command */ HAL_SPI_Transmit(&hspi1, cmd, 1, W25Qx_TIMEOUT_VALUE); /* Reception of the data */ HAL_SPI_Receive(&hspi1,&status, 1, W25Qx_TIMEOUT_VALUE); W25Qx_Disable(); /* Check the value of the register */ if((status & W25Q128FV_FSR_BUSY) != 0) { return W25Qx_BUSY; } else { return W25Qx_OK; } } /** * @brief This function send a Write Enable and wait it is effective. * @retval None */ uint8_t BSP_W25Qx_WriteEnable(void) { uint8_t cmd[] = {WRITE_ENABLE_CMD}; uint32_t tickstart = HAL_GetTick(); /*Select the FLASH: Chip Select low */ W25Qx_Enable(); /* Send the read ID command */ HAL_SPI_Transmit(&hspi1, cmd, 1, W25Qx_TIMEOUT_VALUE); /*Deselect the FLASH: Chip Select high */ W25Qx_Disable(); /* Wait the end of Flash writing */ while(BSP_W25Qx_GetStatus() == W25Qx_BUSY); { /* Check for the Timeout */ if((HAL_GetTick() - tickstart) > W25Qx_TIMEOUT_VALUE) { return W25Qx_TIMEOUT; } } return W25Qx_OK; } /** * @brief Read Manufacture/Device ID. * @param return value address * @retval None */ void BSP_W25Qx_Read_ID(uint8_t *ID) { uint8_t cmd[4] = {READ_ID_CMD,0x00,0x00,0x00}; W25Qx_Enable(); /* Send the read ID command */ HAL_SPI_Transmit(&hspi1, cmd, 4, W25Qx_TIMEOUT_VALUE); /* Reception of the data */ HAL_SPI_Receive(&hspi1,ID, 2, W25Qx_TIMEOUT_VALUE); W25Qx_Disable(); } /** * @brief Reads an amount of data from the QSPI memory. * @param pData: Pointer to data to be read * @param ReadAddr: Read start address * @param Size: Size of data to read * @retval QSPI memory status */ uint8_t BSP_W25Qx_Read(uint8_t* pData, uint32_t ReadAddr, uint32_t Size) { uint8_t cmd[4]; /* Configure the command */ cmd[0] = READ_CMD; cmd[1] = (uint8_t)(ReadAddr >> 16); cmd[2] = (uint8_t)(ReadAddr >> 8); cmd[3] = (uint8_t)(ReadAddr); W25Qx_Enable(); /* Send the read ID command */ HAL_SPI_Transmit(&hspi1, cmd, 4, W25Qx_TIMEOUT_VALUE); /* Reception of the data */ if (HAL_SPI_Receive(&hspi1, pData,Size,W25Qx_TIMEOUT_VALUE) != HAL_OK) { return W25Qx_ERROR; } W25Qx_Disable(); return W25Qx_OK; } /** * @brief Writes an amount of data to the QSPI memory. * @param pData: Pointer to data to be written * @param WriteAddr: Write start address * @param Size: Size of data to write,No more than 256byte. * @retval QSPI memory status */ uint8_t BSP_W25Qx_Write(uint8_t* pData, uint32_t WriteAddr, uint32_t Size) { uint8_t cmd[4]; uint32_t end_addr, current_size, current_addr; uint32_t tickstart = HAL_GetTick(); /* Calculation of the size between the write address and the end of the page */ current_addr = 0; while (current_addr <= WriteAddr) { current_addr += W25Q128FV_PAGE_SIZE; } current_size = current_addr - WriteAddr; /* Check if the size of the data is less than the remaining place in the page */ if (current_size > Size) { current_size = Size; } /* Initialize the adress variables */ current_addr = WriteAddr; end_addr = WriteAddr + Size; /* Perform the write page by page */ do { /* Configure the command */ cmd[0] = PAGE_PROG_CMD; cmd[1] = (uint8_t)(current_addr >> 16); cmd[2] = (uint8_t)(current_addr >> 8); cmd[3] = (uint8_t)(current_addr); /* Enable write operations */ BSP_W25Qx_WriteEnable(); W25Qx_Enable(); /* Send the command */ if (HAL_SPI_Transmit(&hspi1,cmd, 4, W25Qx_TIMEOUT_VALUE) != HAL_OK) { return W25Qx_ERROR; } /* Transmission of the data */ if (HAL_SPI_Transmit(&hspi1, pData,current_size, W25Qx_TIMEOUT_VALUE) != HAL_OK) { return W25Qx_ERROR; } W25Qx_Disable(); /* Wait the end of Flash writing */ while(BSP_W25Qx_GetStatus() == W25Qx_BUSY); { /* Check for the Timeout */ if((HAL_GetTick() - tickstart) > W25Qx_TIMEOUT_VALUE) { return W25Qx_TIMEOUT; } } /* Update the address and size variables for next page programming */ current_addr += current_size; pData += current_size; current_size = ((current_addr + W25Q128FV_PAGE_SIZE) > end_addr) ? (end_addr - current_addr) : W25Q128FV_PAGE_SIZE; } while (current_addr < end_addr); return W25Qx_OK; } /** * @brief Erases the specified block of the QSPI memory. * @param BlockAddress: Block address to erase * @retval QSPI memory status */ uint8_t BSP_W25Qx_Erase_Block(uint32_t Address) { uint8_t cmd[4]; uint32_t tickstart = HAL_GetTick(); cmd[0] = SECTOR_ERASE_CMD; cmd[1] = (uint8_t)(Address >> 16); cmd[2] = (uint8_t)(Address >> 8); cmd[3] = (uint8_t)(Address); /* Enable write operations */ BSP_W25Qx_WriteEnable(); /*Select the FLASH: Chip Select low */ W25Qx_Enable(); /* Send the read ID command */ HAL_SPI_Transmit(&hspi1, cmd, 4, W25Qx_TIMEOUT_VALUE); /*Deselect the FLASH: Chip Select high */ W25Qx_Disable(); /* Wait the end of Flash writing */ while(BSP_W25Qx_GetStatus() == W25Qx_BUSY); { /* Check for the Timeout */ if((HAL_GetTick() - tickstart) > W25Q128FV_SECTOR_ERASE_MAX_TIME) { return W25Qx_TIMEOUT; } } return W25Qx_OK; } /** * @brief Erases the entire QSPI memory.This function will take a very long time. * @retval QSPI memory status */ uint8_t BSP_W25Qx_Erase_Chip(void) { uint8_t cmd[4]; uint32_t tickstart = HAL_GetTick(); cmd[0] = SECTOR_ERASE_CMD; /* Enable write operations */ BSP_W25Qx_WriteEnable(); /*Select the FLASH: Chip Select low */ W25Qx_Enable(); /* Send the read ID command */ HAL_SPI_Transmit(&hspi1, cmd, 1, W25Qx_TIMEOUT_VALUE); /*Deselect the FLASH: Chip Select high */ W25Qx_Disable(); /* Wait the end of Flash writing */ while(BSP_W25Qx_GetStatus() != W25Qx_BUSY); { /* Check for the Timeout */ if((HAL_GetTick() - tickstart) > W25Q128FV_BULK_ERASE_MAX_TIME) { return W25Qx_TIMEOUT; } } return W25Qx_OK; } /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include "spi.h" #include "usart.h" #include "gpio.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include "stm32f1xx_hal.h" #include <stdio.h> #include <string.h> #include "W25QXX.h" uint8_t wData[0x100]; uint8_t rData[0x100]; uint32_t i; uint8_t ID[2]; extern UART_HandleTypeDef huart1; //声明串口 /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ /** * 函数功能: 重定向c库函数printf到DEBUG_USARTx * 输入参数: 无 * 返 回 值: 无 * 说 明：无 */ int fputc(int ch, FILE *f) { HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xffff); return ch; } /** * 函数功能: 重定向c库函数getchar,scanf到DEBUG_USARTx * 输入参数: 无 * 返 回 值: 无 * 说 明：无 */ int fgetc(FILE *f) { uint8_t ch = 0; HAL_UART_Receive(&huart1, &ch, 1, 0xffff); return ch; } /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /** * @brief The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_USART1_UART_Init(); MX_SPI1_Init(); /* USER CODE BEGIN 2 */ printf("\r\n SPI-W25Qxxx Example \r\n\r\n"); /*##-1- Read the device ID ########################*/ BSP_W25Qx_Init(); BSP_W25Qx_Read_ID(ID); printf(" W25Qxxx ID is : 0x%02X 0x%02X \r\n\r\n",ID[0],ID[1]); /*##-2- Erase Block ##################################*/ if(BSP_W25Qx_Erase_Block(0) == W25Qx_OK) printf(" SPI Erase Block ok\r\n"); else Error_Handler(); /*##-3- Written to the flash ########################*/ /* fill buffer */ for(i =0;i<0x100;i ++) { wData[i] = i; rData[i] = 0; } if(BSP_W25Qx_Write(wData,0x00,0x100)== W25Qx_OK) printf(" SPI Write ok\r\n"); else Error_Handler(); /*##-4- Read the flash ########################*/ if(BSP_W25Qx_Read(rData,0x00,0x100)== W25Qx_OK) printf(" SPI Read ok\r\n\r\n"); else Error_Handler(); printf("SPI Read Data : \r\n"); for(i =0;i<0x100;i++) printf("0x%02X ",rData[i]); printf("\r\n\r\n"); /*##-5- check date ########################*/ if(memcmp(wData,rData,0x100) == 0 ) printf(" W25Q128FV SPI Test OK\r\n"); else printf(" W25Q128FV SPI Test False\r\n"); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ } /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /** Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /** Initializes the CPU, AHB and APB buses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) { Error_Handler(); } } /* USER CODE BEGIN 4 */ /* USER CODE END 4 */ /** * @brief This function is executed in case of error occurrence. * @retval None */ void Error_Handler(void) { /* USER CODE BEGIN Error_Handler_Debug */ /* User can add his own implementation to report the HAL error return state */ __disable_irq(); while (1) { } /* USER CODE END Error_Handler_Debug */ } #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval None */ void assert_failed(uint8_t *file, uint32_t line) { /* USER CODE BEGIN 6 */ /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* USER CODE END 6 */ } #endif /* USE_FULL_ASSERT */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file gpio.c * @brief This file provides code for the configuration * of all used GPIO pins. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "gpio.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /*----------------------------------------------------------------------------*/ /* Configure GPIO */ /*----------------------------------------------------------------------------*/ /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /** Configure pins as * Analog * Input * Output * EVENT_OUT * EXTI */ void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOD_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(SPI1_CS_GPIO_Port, SPI1_CS_Pin, GPIO_PIN_RESET); /*Configure GPIO pin : PtPin */ GPIO_InitStruct.Pin = SPI1_CS_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(SPI1_CS_GPIO_Port, &GPIO_InitStruct); } /* USER CODE BEGIN 2 */ /* USER CODE END 2 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file spi.c * @brief This file provides code for the configuration * of the SPI instances. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "spi.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ SPI_HandleTypeDef hspi1; /* SPI1 init function */ void MX_SPI1_Init(void) { /* USER CODE BEGIN SPI1_Init 0 */ /* USER CODE END SPI1_Init 0 */ /* USER CODE BEGIN SPI1_Init 1 */ /* USER CODE END SPI1_Init 1 */ hspi1.Instance = SPI1; hspi1.Init.Mode = SPI_MODE_MASTER; hspi1.Init.Direction = SPI_DIRECTION_2LINES; hspi1.Init.DataSize = SPI_DATASIZE_8BIT; hspi1.Init.CLKPolarity = SPI_POLARITY_LOW; hspi1.Init.CLKPhase = SPI_PHASE_1EDGE; hspi1.Init.NSS = SPI_NSS_SOFT; hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64; hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB; hspi1.Init.TIMode = SPI_TIMODE_DISABLE; hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; hspi1.Init.CRCPolynomial = 10; if (HAL_SPI_Init(&hspi1) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN SPI1_Init 2 */ /* USER CODE END SPI1_Init 2 */ } void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; if(spiHandle->Instance==SPI1) { /* USER CODE BEGIN SPI1_MspInit 0 */ /* USER CODE END SPI1_MspInit 0 */ /* SPI1 clock enable */ __HAL_RCC_SPI1_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /**SPI1 GPIO Configuration PA5 ------> SPI1_SCK PA6 ------> SPI1_MISO PA7 ------> SPI1_MOSI */ GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_7; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_6; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /* USER CODE BEGIN SPI1_MspInit 1 */ /* USER CODE END SPI1_MspInit 1 */ } } void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle) { if(spiHandle->Instance==SPI1) { /* USER CODE BEGIN SPI1_MspDeInit 0 */ /* USER CODE END SPI1_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_SPI1_CLK_DISABLE(); /**SPI1 GPIO Configuration PA5 ------> SPI1_SCK PA6 ------> SPI1_MISO PA7 ------> SPI1_MOSI */ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7); /* USER CODE BEGIN SPI1_MspDeInit 1 */ /* USER CODE END SPI1_MspDeInit 1 */ } } /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file usart.c * @brief This file provides code for the configuration * of the USART instances. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "usart.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ UART_HandleTypeDef huart1; /* USART1 init function */ void MX_USART1_UART_Init(void) { /* USER CODE BEGIN USART1_Init 0 */ /* USER CODE END USART1_Init 0 */ /* USER CODE BEGIN USART1_Init 1 */ /* USER CODE END USART1_Init 1 */ huart1.Instance = USART1; huart1.Init.BaudRate = 115200; huart1.Init.WordLength = UART_WORDLENGTH_8B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart1) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN USART1_Init 2 */ /* USER CODE END USART1_Init 2 */ } void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspInit 0 */ /* USER CODE END USART1_MspInit 0 */ /* USART1 clock enable */ __HAL_RCC_USART1_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ GPIO_InitStruct.Pin = GPIO_PIN_9; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_10; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /* USER CODE BEGIN USART1_MspInit 1 */ /* USER CODE END USART1_MspInit 1 */ } } void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle) { if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspDeInit 0 */ /* USER CODE END USART1_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_USART1_CLK_DISABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10); /* USER CODE BEGIN USART1_MspDeInit 1 */ /* USER CODE END USART1_MspDeInit 1 */ } } /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file stm32f1xx_it.c * @brief Interrupt Service Routines. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include "stm32f1xx_it.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN TD */ /* USER CODE END TD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /* External variables --------------------------------------------------------*/ /* USER CODE BEGIN EV */ /* USER CODE END EV */ /******************************************************************************/ /* Cortex-M3 Processor Interruption and Exception Handlers */ /******************************************************************************/ /** * @brief This function handles Non maskable interrupt. */ void NMI_Handler(void) { /* USER CODE BEGIN NonMaskableInt_IRQn 0 */ /* USER CODE END NonMaskableInt_IRQn 0 */ /* USER CODE BEGIN NonMaskableInt_IRQn 1 */ while (1) { } /* USER CODE END NonMaskableInt_IRQn 1 */ } /** * @brief This function handles Hard fault interrupt. */ void HardFault_Handler(void) { /* USER CODE BEGIN HardFault_IRQn 0 */ /* USER CODE END HardFault_IRQn 0 */ while (1) { /* USER CODE BEGIN W1_HardFault_IRQn 0 */ /* USER CODE END W1_HardFault_IRQn 0 */ } } /** * @brief This function handles Memory management fault. */ void MemManage_Handler(void) { /* USER CODE BEGIN MemoryManagement_IRQn 0 */ /* USER CODE END MemoryManagement_IRQn 0 */ while (1) { /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */ /* USER CODE END W1_MemoryManagement_IRQn 0 */ } } /** * @brief This function handles Prefetch fault, memory access fault. */ void BusFault_Handler(void) { /* USER CODE BEGIN BusFault_IRQn 0 */ /* USER CODE END BusFault_IRQn 0 */ while (1) { /* USER CODE BEGIN W1_BusFault_IRQn 0 */ /* USER CODE END W1_BusFault_IRQn 0 */ } } /** * @brief This function handles Undefined instruction or illegal state. */ void UsageFault_Handler(void) { /* USER CODE BEGIN UsageFault_IRQn 0 */ /* USER CODE END UsageFault_IRQn 0 */ while (1) { /* USER CODE BEGIN W1_UsageFault_IRQn 0 */ /* USER CODE END W1_UsageFault_IRQn 0 */ } } /** * @brief This function handles System service call via SWI instruction. */ void SVC_Handler(void) { /* USER CODE BEGIN SVCall_IRQn 0 */ /* USER CODE END SVCall_IRQn 0 */ /* USER CODE BEGIN SVCall_IRQn 1 */ /* USER CODE END SVCall_IRQn 1 */ } /** * @brief This function handles Debug monitor. */ void DebugMon_Handler(void) { /* USER CODE BEGIN DebugMonitor_IRQn 0 */ /* USER CODE END DebugMonitor_IRQn 0 */ /* USER CODE BEGIN DebugMonitor_IRQn 1 */ /* USER CODE END DebugMonitor_IRQn 1 */ } /** * @brief This function handles Pendable request for system service. */ void PendSV_Handler(void) { /* USER CODE BEGIN PendSV_IRQn 0 */ /* USER CODE END PendSV_IRQn 0 */ /* USER CODE BEGIN PendSV_IRQn 1 */ /* USER CODE END PendSV_IRQn 1 */ } /** * @brief This function handles System tick timer. */ void SysTick_Handler(void) { /* USER CODE BEGIN SysTick_IRQn 0 */ /* USER CODE END SysTick_IRQn 0 */ HAL_IncTick(); /* USER CODE BEGIN SysTick_IRQn 1 */ /* USER CODE END SysTick_IRQn 1 */ } /******************************************************************************/ /* STM32F1xx Peripheral Interrupt Handlers */ /* Add here the Interrupt Handlers for the used peripherals. */ /* For the available peripheral interrupt handler names, */ /* please refer to the startup file (startup_stm32f1xx.s). */ /******************************************************************************/ /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file stm32f1xx_hal_msp.c * @brief This file provides code for the MSP Initialization * and de-Initialization codes. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /* USER CODE BEGIN Includes */ /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN TD */ /* USER CODE END TD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN Define */ /* USER CODE END Define */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN Macro */ /* USER CODE END Macro */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* External functions --------------------------------------------------------*/ /* USER CODE BEGIN ExternalFunctions */ /* USER CODE END ExternalFunctions */ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /** * Initializes the Global MSP. */ void HAL_MspInit(void) { /* USER CODE BEGIN MspInit 0 */ /* USER CODE END MspInit 0 */ __HAL_RCC_AFIO_CLK_ENABLE(); __HAL_RCC_PWR_CLK_ENABLE(); /* System interrupt init*/ /** NOJTAG: JTAG-DP Disabled and SW-DP Enabled */ __HAL_AFIO_REMAP_SWJ_NOJTAG(); /* USER CODE BEGIN MspInit 1 */ /* USER CODE END MspInit 1 */ } /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ 这段代码串口打印出来的都是0x00，是什么原因，要怎么改，使用的芯片为stm32f103rct6,cpol设置为low cpha设置为1Edge，SPI1_sck、SPI1_miso、SPI1_mosi分别对应的引脚为PA5、PA6、PA7
07-16
我们有一个STM32F103RCT6的工程，使用SPI1（PA5, PA6, PA7）连接W25Q128 Flash芯片，并通过串口打印调试信息。 问题描述：串口打印出来的数据都是0x00，即从Flash读取的数据全为0。 可能的原因分析： ...
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