1 新建模板文件夹

新建一个名叫03_GD32TemplateProject的文件夹，用于建造工程模板

2 移植官方库文件

在模板文件夹里新建5个文件夹，分别存放官方库文件和系统驱动文件

01_main

存放main函数

02_Startup

存放系统启动文件

03_System

存放官方的系统文件

04_Firmware_PeripheralDriver

存放官方的外设驱动库文件

05_UserDriver

存放用户驱动文件

3 新建keil工程

3.1 安装芯片pack

去官方网站找到对应的资料包：官网资料包

安装pack

3.2 新建工程

选择对应的芯片型号

勾选CMSIS内核

工程创建完成

3.3 添加文件

3.4 添加路径

4 修改文件

4.1 修改中断文件

打开gd32e23x_it.c文件，拉到最后面，然后删掉Systick_Handler下面的代码

4.2 修改systick文件

systick.h

#ifndef SYS_TICK_H
#define SYS_TICK_H

#include <stdint.h>

/* function declarations */
/* configure systick */
void systick_config(void);
/* delay a time in milliseconds */
void delay_1ms(uint32_t count);

/* delay a time in milliseconds */
void delay_ms(uint32_t count);

/* delay a time in microseconds */
void delay_1us(uint32_t count);

/* delay a time in microseconds */
void delay_us(uint32_t count);

#endif /* SYS_TICK_H */

systick.c

#include "gd32e23x.h"
#include "systick.h"

volatile static float count_1us = 0;
volatile static float count_1ms = 0;

/*!
    \brief      configure systick
    \param[in]  none
    \param[out] none
    \retval     none
*/
void systick_config(void)
{
    /* systick clock source is from HCLK/8 */
    systick_clksource_set(SYSTICK_CLKSOURCE_HCLK_DIV8);
    count_1us = (float)SystemCoreClock/8000000;
    count_1ms = (float)count_1us * 1000;
}

/*!
    \brief      delay a time in microseconds in polling mode
    \param[in]  count: count in microseconds
    \param[out] none
    \retval     none
*/
void delay_1us(uint32_t count)
{
    uint32_t ctl;
    
    /* reload the count value */
    SysTick->LOAD = (uint32_t)(count * count_1us);
    /* clear the current count value */
    SysTick->VAL = 0x0000U;
    /* enable the systick timer */
    SysTick->CTRL = SysTick_CTRL_ENABLE_Msk;
    /* wait for the COUNTFLAG flag set */
    do{
        ctl = SysTick->CTRL;
    }while((ctl&SysTick_CTRL_ENABLE_Msk)&&!(ctl & SysTick_CTRL_COUNTFLAG_Msk));
    /* disable the systick timer */
    SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
    /* clear the current count value */
    SysTick->VAL = 0x0000U;
}


void delay_us(uint32_t count)
{
    uint32_t ctl;
    
    /* reload the count value */
    SysTick->LOAD = (uint32_t)(count * count_1us);
    /* clear the current count value */
    SysTick->VAL = 0x0000U;
    /* enable the systick timer */
    SysTick->CTRL = SysTick_CTRL_ENABLE_Msk;
    /* wait for the COUNTFLAG flag set */
    do{
        ctl = SysTick->CTRL;
    }while((ctl&SysTick_CTRL_ENABLE_Msk)&&!(ctl & SysTick_CTRL_COUNTFLAG_Msk));
    /* disable the systick timer */
    SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
    /* clear the current count value */
    SysTick->VAL = 0x0000U;
}


/*!
    \brief      delay a time in milliseconds in polling mode
    \param[in]  count: count in milliseconds
    \param[out] none
    \retval     none
*/
void delay_1ms(uint32_t count)
{
    uint32_t ctl;
    
    /* reload the count value */
    SysTick->LOAD = (uint32_t)(count * count_1ms);
    /* clear the current count value */
    SysTick->VAL = 0x0000U;
    /* enable the systick timer */
    SysTick->CTRL = SysTick_CTRL_ENABLE_Msk;
    /* wait for the COUNTFLAG flag set */
    do{
        ctl = SysTick->CTRL;
    }while((ctl&SysTick_CTRL_ENABLE_Msk)&&!(ctl & SysTick_CTRL_COUNTFLAG_Msk));
    /* disable the systick timer */
    SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
    /* clear the current count value */
    SysTick->VAL = 0x0000U;
}

void delay_ms(uint32_t count)
{
    uint32_t ctl;
    
    /* reload the count value */
    SysTick->LOAD = (uint32_t)(count * count_1ms);
    /* clear the current count value */
    SysTick->VAL = 0x0000U;
    /* enable the systick timer */
    SysTick->CTRL = SysTick_CTRL_ENABLE_Msk;
    /* wait for the COUNTFLAG flag set */
    do{
        ctl = SysTick->CTRL;
    }while((ctl&SysTick_CTRL_ENABLE_Msk)&&!(ctl & SysTick_CTRL_COUNTFLAG_Msk));
    /* disable the systick timer */
    SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
    /* clear the current count value */
    SysTick->VAL = 0x0000U;
}

4.3 修改main文件

#include "gd32e23x.h"
#include "systick.h"
#include <stdio.h>
#include "main.h"


int main(void)
{

	while(1)
	{

	}
}

5 编译工程

无错误，模板创建完成

6 工程模板点灯测试

6.1 代码

#include "gd32e23x.h"
#include "systick.h"
#include <stdio.h>
#include "main.h"


int main(void)
{
	/* configure systick */
  systick_config();
	
	// 使能GPIOC时钟
  rcu_periph_clock_enable(RCU_GPIOC);
	
	// 设置为推挽输出模式
  gpio_mode_set(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_13);
  gpio_output_options_set(GPIOC, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_13);
	
	// GPIOC_13 设定为高电平
  gpio_bit_set(GPIOC, GPIO_PIN_13);
        
	while(1)
	{
		gpio_bit_toggle(GPIOC, GPIO_PIN_13);
		delay_ms(500);
	}
}

6.2 烧录

选择DAP-link烧录模式

点击setting,检查是否识别到芯片

无误后开始烧录即可

6.3 实验现象

LED开始正常闪烁