HT32F52352学习笔记之一

第一次尝试点亮一个LED，花了不少时间在找官网资料，终于算是完成了点亮LED这个大项目了。

用的是最小系统板上附带的LED，最小系统板型号是ESK32-30501v2.0。

主要的代码：

#include "led.h"

static void LED_CKCU_Config()
{
	CKCU_PeripClockConfig_TypeDef CCLOCK;
	
	CCLOCK.Bit.PC     = 1;
	CCLOCK.Bit.AFIO  = 1;
	
	CKCU_PeripClockConfig(CCLOCK, ENABLE);
}

static void LED_GPIO_Config()
{
	HT_GPIO_TypeDef* GPIOx;
	
	GPIOx = HT_GPIOC;
	
	AFIO_GPxConfig(LED2_GPIO_ID, LED2_GPIO_PIN, LED2_AFIO_MODE);
	
	/* Configure the GPIO pin                                                                                 */
	GPIO_PullResistorConfig(GPIOx, LED2_GPIO_PIN, GPIO_PR_DISABLE);
	GPIO_DriveConfig(GPIOx, LED2_GPIO_PIN, GPIO_DV_8MA);
	GPIO_DirectionConfig(GPIOx, LED2_GPIO_PIN, GPIO_DIR_OUT);
}

void LED_Init()
{
	LED_CKCU_Config();
	LED_GPIO_Config();
}

对硬件方面(如引脚、模式选择等的封装)

#ifndef _LED_H
#define _LED_H

#include "ht32f5xxxx_01.h"

#define LED1_GPIO_ID                (GPIO_PC)
#define LED1_GPIO_PIN               (GPIO_PIN_14)
#define LED1_AFIO_MODE              (AFIO_FUN_GPIO)

#define LED2_GPIO_ID                (GPIO_PC)
#define LED2_GPIO_PIN               (GPIO_PIN_15)
#define LED2_AFIO_MODE              (AFIO_FUN_GPIO)

#define LED3_GPIO_ID                (GPIO_PC)
#define LED3_GPIO_PIN               (GPIO_PIN_1)
#define LED3_AFIO_MODE              (AFIO_FUN_GPIO)

void LED_Init(void);

#endif

对用到的库函数的摘录

1、时钟使能函数

/*********************************************************************************************************//**
 * @brief Enable or Disable the peripheral clock.
 * @param Clock: specify the peripheral clock enable bits.
 * @param Cmd: This parameter can be ENABLE or DISABLE.
 * @retval None
 ************************************************************************************************************/
void CKCU_PeripClockConfig(CKCU_PeripClockConfig_TypeDef Clock, ControlStatus Cmd)

2、复用功能使能函数

/*********************************************************************************************************//**
 * @brief Configure alternated mode of GPIO with specified pins.
 * @param GPIO_Px: GPIO_PA ~ GPIO_PD.
 * @param AFIO_PIN_n: This parameter can be any combination of AFIO_PIN_x.
 * @param AFIO_MODE_n: This parameter can be one of the following values:
 *        @arg AFIO_MODE_DEFAULT : The default I/O function
 *        @arg AFIO_MODE_1       : Alternated mode 1
 *        @arg AFIO_MODE_2       : Alternated mode 2
 *        @arg AFIO_MODE_3       : Alternated mode 3
 *        @arg AFIO_MODE_4       : Alternated mode 4
 *        @arg AFIO_MODE_5       : Alternated mode 5
 *        @arg AFIO_MODE_6       : Alternated mode 6
 *        @arg AFIO_MODE_7       : Alternated mode 7
 *        @arg AFIO_MODE_8       : Alternated mode 8
 *        @arg AFIO_MODE_9       : Alternated mode 9
 *        @arg AFIO_MODE_10      : Alternated mode 10
 *        @arg AFIO_MODE_11      : Alternated mode 11
 *        @arg AFIO_MODE_12      : Alternated mode 12
 *        @arg AFIO_MODE_13      : Alternated mode 13
 *        @arg AFIO_MODE_14      : Alternated mode 14
 *        @arg AFIO_MODE_15      : Alternated mode 15
 * @retval None
 ************************************************************************************************************/
void AFIO_GPxConfig(u32 GPIO_Px, u32 AFIO_PIN_n, AFIO_MODE_Enum AFIO_MODE_n)

3、初始化GPIO引脚的函数

（1）设置指定引脚电阻函数

/*********************************************************************************************************//**
 * @brief Configure the pull resistor of specified GPIO pins.
 * @param HT_GPIOx: where HT_GPIOx is the selected GPIO from the GPIO peripherals.
 * @param GPIO_PIN_nBITMAP: The port pins.
 *   This parameter can be any combination of GPIO_PIN_x.
 * @param GPIO_PR_x: Selection of Pull resistor.
 *   This parameter can be one of below:
 *     @arg GPIO_PR_UP      : The pins with internal pull-up resistor
 *     @arg GPIO_PR_DOWN    : The pins with internal pull-down resistor
 *     @arg GPIO_PR_DISABLE : The pins without pull resistor
 * @retval None
 ************************************************************************************************************/
void GPIO_PullResistorConfig(HT_GPIO_TypeDef* HT_GPIOx, u16 GPIO_PIN_nBITMAP, GPIO_PR_Enum GPIO_PR_x)

（2）设置驱动电流函数

/*********************************************************************************************************//**
 * @brief Select the driving current of specified GPIO pins.
 * @param HT_GPIOx: where HT_GPIOx is the selected GPIO from the GPIO peripherals.
 * @param GPIO_PIN_nBITMAP: The port pins.
 *   This parameter can be any combination of GPIO_PIN_x.
 * @param GPIO_DV_nMA:
 *   This parameter can be one of below:
 *     @arg GPIO_DV_4MA  : Select output driving current as  4 mA
 *     @arg GPIO_DV_8MA  : Select output driving current as  8 mA
 *     @arg GPIO_DV_12MA : Select output driving current as 12 mA
 *     @arg GPIO_DV_16MA : Select output driving current as 16 mA
 * @retval None
 ************************************************************************************************************/
void GPIO_DriveConfig(HT_GPIO_TypeDef* HT_GPIOx, u16 GPIO_PIN_nBITMAP, GPIO_DV_Enum GPIO_DV_nMA)

（3）设置输入/输出函数

/*********************************************************************************************************//**
 * @brief Configure the direction of specified GPIO pins.
 * @param HT_GPIOx: where HT_GPIOx is the selected GPIO from the GPIO peripherals.
 * @param GPIO_PIN_nBITMAP: The port pins.
 *   This parameter can be any combination of GPIO_PIN_x.
 * @param GPIO_DIR_INorOUT:
 *   This parameter can be one of below:
 *     @arg GPIO_DIR_IN  : The pins are input mode
 *     @arg GPIO_DIR_OUT : The pins are output mode
 * @retval None
 ************************************************************************************************************/
void GPIO_DirectionConfig(HT_GPIO_TypeDef* HT_GPIOx, u16 GPIO_PIN_nBITMAP, GPIO_DIR_Enum GPIO_DIR_INorOUT)