梁山派GD32--寄存器點燈

立創梁山派GD32F450ZGT6--寄存器點燈

 bsp_led.h 如下：（條件編譯，避免重複編譯）

//bsp_led.h 如下：
#ifndef  _BSP_LED_H
#define _BSP_LED_H

#include "gd32f4xx.h"
#include "systick.h"


#define BSP_RCU_BASE (unsigned int)0x40023800   //RCU基位址 
#define BSP_RCU_AHB1EN *(unsigned int*) (BSP_RCU_BASE + 0x30) //基位址 + 位址偏移   //立即數轉化為位址(*)，再轉化為值(*)

#define BSP_GPIOD_BASE (unsigned int)0x40020C00
#define BSP_GPIOD_CTL *(unsigned int*)(BSP_GPIOD_BASE + 0x00)	//控制端口寄存器位址
	
#define BSP_GPIOD_PUD *(unsigned int*)(BSP_GPIOD_BASE + 0x0C)	//上下拉寄存器位址
	
#define BSP_GPIOD_OMODE *(unsigned int*)(BSP_GPIOD_BASE + 0x04)	//端口輸出模式寄存器位址

#define BSP_GPIOD_OSPD *(unsigned int*)(BSP_GPIOD_BASE + 0x08)	//端口輸出速度寄存器位址
	
#define BSP_GPIOD_OCTL *(unsigned int*)(BSP_GPIOD_BASE + 0x14)	//OCTL寄存器位址



//函數聲明如下：
void led_gpio_config(void);

#endif
           

bsp_led.c 如下：

//bsp_led.c 如下：
#include "bsp_led.h"

void led_gpio_config(void)
{
	//開啟GPIOD的端口時鐘
	BSP_RCU_AHB1EN |= 0x00000008;		//BSP_RCU_AHB1EN |= (1<<3);

	//配置GPIOD的模式（兩步）
	//1.配置為輸出功能
	BSP_GPIOD_CTL &= ~(0x03<<(2*7));	//14位15位都拉低   //BSP_GPIOD_CTL &= 0xFFFF3FFF;	
	BSP_GPIOD_CTL |= (0x01<<(2*7));		//14位拉高   	//BSP_GPIOD_CTL |= 0x00004000;
	
	//2.配置為浮空模式
	BSP_GPIOD_PUD &= ~(0x03<<(2*7));

	//配置GPIOD的輸出（兩步）
	//1.端口輸出模式寄存器：推挽輸出
	BSP_GPIOD_OMODE &= ~(0x01<<7);
	
	//2.端口輸出速度寄存器：50MHz（等級和速度的關系）10
	BSP_GPIOD_OSPD &= ~(0x03<<(2*7));	//14位15位都拉低   	
	BSP_GPIOD_OSPD |= (0x02<<(2*7));		//15位拉高   

}
           

主函數如下：

//主函數

#include "gd32f4xx.h"
#include "systick.h"
#include <stdio.h>
#include "main.h"

#include "bsp_led.h"  //新增頭檔案

/*!
    \brief    main function
    \param[in]  none
    \param[out] none
    \retval     none
*/

int main(void)
{
    systick_config();
	
	led_gpio_config();	//led初始化
	
	BSP_GPIOD_OCTL |=(0x01<<7);//led2亮

    while(1) 
    {
    }

}