STM32硬件SPI驱动DAC8760

1、SPI配置

2、driver_spi_dac8760.h

#ifndef _DRIVER_SPI_DAC8760_H
#define _DRIVER_SPI_DAC8760_H

#include "stm32f4xx_hal.h"
#include "gpio.h"
#include "spi.h"


#define HSPI_DAC8760			hspi1

#define DAC8760_CS_GPIO_PORT	GPIOA
#define DAC8760_CS_GPIO_PIN   	GPIO_PIN_4
#define DAC8760_TIMEOUT       	500


/** DAC8760 ****/
#define  V_0_P5					0x0000		//电压范围0~+5V
#define  V_0_P10				0x0001		//电压范围0~+10V
#define  V_N5_P5				0x0002		//电压范围-5~+5V
#define  V_N10_P10				0x0003		//电压范围-10~+10V

/* DAC8760 写操作 */
#define W_ADDR_NOP				0x00
#define W_ADDR_DATA				0x01		// 写数据寄存器
#define W_ADDR_READ				0x02		// 读寄存器
#define W_ADDR_CTRL				0x55		// 写控制寄存器
#define W_ADDR_RESET			0x56		// 写复位寄存器
#define W_ADDR_CONFIG			0x57		// 写配置寄存器
#define W_ADDR_GAIN				0x58		// 写增益校准寄存器
#define W_ADDR_ZERO				0x59		// 写零校准寄存器
#define W_ADDR_WDTRST			0x95		// 看门狗时间复位
#define W_ADDR_CRCERRRST		0x96		// CRC错误复位

/* DAC8760 读操作寄存器地址 */ 
#define R_ADDR_SATUS			0x00
#define R_ADDR_DATA				0x01
#define R_ADDR_CTRL				0x02
#define R_ADDR_CONFIG			0x0B
#define R_ADDR_GAIN				0x13
#define R_ADDR_ZERO				0x17



void lockDac8760Spi(void);
void unlockDac8760Spi(void);
void Dac8760Init(void);
int Dac8760Write(uint8_t addr, uint16_t data);
int Dac8760Read(uint8_t addr_r, uint16_t *data);
void Dac8760Test(void);

#endif /* _DRIVER_SPI_DAC8760_H */

3、driver_spi_dac8760.c

/**
  ******************************************************************************
  * @file    driver_spi_dac8760.c
  * @author  GLC
  * @version V1.0
  * @date    2024-05-27
  * @brief   dac8760驱动程序。 
  ******************************************************************************
  * @attention 
  * 
  * 修改历史     版本号           作者        修改内容
  *-----------------------------------------------------
  * 2024.05.27    v1.0             GLC        创建文件
  *-----------------------------------------------------
  */

#include "driver_spi_dac8760.h"
#include "driver_timer.h"
#include "driver_debug_usart.h"
#include <stdio.h>
#include "FreeRTOS.h"
#include "task.h"
#include "semphr.h"


static SemaphoreHandle_t	g_xMutexDac8760Spi;

/**
  * @brief Dac8760Select 
  * @param None
  * @retval None
  * @attention 
  * 
  */ 
static void Dac8760Select(void)
{
    HAL_GPIO_WritePin(DAC8760_CS_GPIO_PORT, DAC8760_CS_GPIO_PIN, GPIO_PIN_RESET);
}

/**
  * @brief Dac8760Deselect 
  * @param None
  * @retval None
  * @attention 
  * 
  */ 
static void Dac8760Deselect(void)
{
    HAL_GPIO_WritePin(DAC8760_CS_GPIO_PORT, DAC8760_CS_GPIO_PIN, GPIO_PIN_SET);
}

/**
  * @brief Dac8760TxRx  使用SPI发送/接收数据 
  * @param pTxData - 要发送的数据
  * 		Size    - 数据长度
  *			Timeout - 超时时间(单位ms)
  *			pRxData - 接收缓冲区
  * @retval 0 - 成功, (-1)-失败
  * @attention 
  * (注意这个函数没有设置片选信号)
  */ 
static int Dac8760TxRx(uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
{
    if (HAL_OK == HAL_SPI_TransmitReceive(&HSPI_DAC8760, pTxData, pRxData, Size, Timeout))
        return 0;
    else
        return -1;
}

/**
  * @brief Dac8760Tx  使用SPI发送数据 
  * @param pTxData - 要发送的数据
  * 		Size    - 数据长度
  *			Timeout - 超时时间(单位ms)
  * @retval 0 - 成功, (-1)-失败
  * @attention 
  * (注意这个函数没有设置片选信号)
  */ 
static int Dac8760Tx(uint8_t *pTxData, uint16_t Size, uint32_t Timeout)
{
    if (HAL_OK == HAL_SPI_Transmit(&HSPI_DAC8760, pTxData, Size, Timeout))
        return 0;
    else
        return -1;
}

/**
  * @brief Dac8760Rx  使用SPI读取数据 
  * @param pRxData - 接收缓冲区
  * 		Size    - 数据长度
  *			Timeout - 超时时间(单位ms)
  * @retval 0 - 成功, (-1)-失败
  * @attention 
  * (注意这个函数没有设置片选信号)
  */ 
static int Dac8760Rx(uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
{
    if (HAL_OK == HAL_SPI_Receive(&HSPI_DAC8760, pRxData, Size, Timeout))
        return 0;
    else
        return -1;
}

/**
  * @brief lockDac8760Spi 
  * @param None
  * @retval None
  * @attention 
  * 
  */ 
void lockDac8760Spi(void)
{
	xSemaphoreTake(g_xMutexDac8760Spi, portMAX_DELAY);
}

/**
  * @brief unlockDac8760Spi 
  * @param None
  * @retval None
  * @attention 
  * 
  */ 
void unlockDac8760Spi(void)
{
	xSemaphoreGive(g_xMutexDac8760Spi);
}

/**
  * @brief Dac8760Init Dac8760的初始化函数
  * @param None
  * @retval None
  * @attention 
  * 
  */
void Dac8760Init(void)
{
    /* 1 片选信号引脚配置，已在gpio.c中被配置为输出引脚 */
	
    /* 2 SPI配置，SPI已在spi.c中配置好 */
	
	/* 3 片选信号引脚释放 */
	Dac8760Deselect();
	
	/* 4 创建互斥量 */
	g_xMutexDac8760Spi = xSemaphoreCreateMutex();
}

/**
  * @brief Dac8760Write  写函数
  * @param addr - 写哪个地址, 写操作
  * 		data    - 写数据
  * @retval 0 - 成功, 非0 - 失败
  * @attention 
  * 
  */ 
int Dac8760Write(uint8_t addr, uint16_t data)
{
	uint8_t tmpbuf[3];
    int ret;
    
    /* 自己实现SPI的写操作 */
    tmpbuf[0] = addr;
    tmpbuf[1] = (data >> 8) & 0xff;
    tmpbuf[2] = (data >> 0) & 0xff;
    
    Dac8760Select();

    /* 发送写命令 */
    ret = Dac8760Tx(tmpbuf, 3, DAC8760_TIMEOUT);

    Dac8760Deselect();    
	
    return ret;
}

/**
  * @brief Dac8760Read 读函数
  * @param addr_r - 读哪个地址
  *			data - 用来保存读到的数据
  * @retval 0 - 成功, 非0 - 失败
  * @attention 
  * 
  */ 
int Dac8760Read(uint8_t addr_r, uint16_t *data)
{
	uint8_t tmpbuf[3], rcvbuf[3];
    int ret;
	
	tmpbuf[0] = W_ADDR_READ;
    tmpbuf[1] = 0x00;
    tmpbuf[2] = addr_r;
	
	Dac8760Select();

    /* 发送写命令 */
    ret = Dac8760Tx(tmpbuf, 3, DAC8760_TIMEOUT);
	
	if (ret)
	{
		Dac8760Deselect();
		return ret;
	}
	
	Dac8760Deselect();
	udelay(1);
	Dac8760Select();
	ret = Dac8760Rx(rcvbuf, 3, DAC8760_TIMEOUT);
	Dac8760Deselect();
	*data = rcvbuf[1];
	*data <<= 8;
	*data |= rcvbuf[2];
	
	return ret;
}


/**
  * @brief Dac8760Test 测试程序
  * @param None
  * @retval None
  * @attention 
  * 
  */
void Dac8760Test(void)
{
	int ret;
	uint16_t temp;
	Dac8760Init();
	
	Dac8760Write(W_ADDR_RESET,0x0001);						// 0x56 复位寄存器   0x0001执行软件复位
	// 0x55 控制寄存器  (1<<12)|V_N10_P10设置电压输出模式-10~+10V,并且使能控制寄存器第12位
	// bit15为0，复位输出0V
    Dac8760Write(W_ADDR_CTRL,(1<<12)|V_N10_P10);			
    Dac8760Write(W_ADDR_CONFIG,0x0000);						// 0x57 配置寄存器   0x0000设置单电压模式，电流输出0 
	
	ret = Dac8760Read(R_ADDR_CTRL, &temp);
	printf("ret = %d\t temp = %d\n", ret, temp);
	
	mdelay(5000);
		
    while (1)
    {
		ret = Dac8760Write(W_ADDR_DATA,0);
		printf("ret = %d\t value = 0\n", ret);
		mdelay(5000);
		ret = Dac8760Write(W_ADDR_DATA,32768);
		printf("ret = %d\t value = 32758\n", ret);
		mdelay(5000);
		ret = Dac8760Write(W_ADDR_DATA,65535);
		printf("ret = %d\t value = 65535\n", ret);
		mdelay(5000);
    }
}