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yelvlab 2024-09-21 00:23:09 +08:00
parent 439d6579f0
commit 4e5944699b
3 changed files with 101 additions and 97 deletions
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9
openocd_gd32e230f4.cfg Normal file
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@ -0,0 +1,9 @@
# 连接cmsis-dap（喝粥）
; interface cmsis-dap
source [find interface/cmsis-dap.cfg]
# 选择SWD
transport select swd
# 加载gd32e23x.cfg
source [find target/gd32e23x.cfg]

51
src/main.c
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@ -5,33 +5,6 @@
\version 2024-02-22, V2.1.0, firmware for GD32E23x
*/
/*
Copyright (c) 2024, GigaDevice Semiconductor Inc.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
#include "gd32e23x.h"
#include "systick.h"
#include <stdio.h>
@ -39,6 +12,12 @@ OF SUCH DAMAGE.
#include "gd32e23x_libopt.h"
/*!
\brief LED blink function with tmer13
\param[in] none
\param[out] none
\retval none
*/
void led_config(void)
{
rcu_periph_clock_enable(RCU_GPIOB);
@ -76,26 +55,9 @@ int main(void)
{
/* configure systick */
systick_config();
/* initilize the LEDs, USART and key */
// gd_eval_led_init(LED1);
// gd_eval_led_init(LED2);
// gd_eval_led_init(LED3);
// gd_eval_com_init(EVAL_COM);
// gd_eval_key_init(KEY_WAKEUP, KEY_MODE_GPIO);
/* print out the clock frequency of system, AHB, APB1 and APB2 */
// printf("\r\nCK_SYS is %lu", rcu_clock_freq_get(CK_SYS));
// printf("\r\nCK_AHB is %lu", rcu_clock_freq_get(CK_AHB));
// printf("\r\nCK_APB1 is %lu", rcu_clock_freq_get(CK_APB1));
// printf("\r\nCK_APB2 is %lu", rcu_clock_freq_get(CK_APB2));
led_config();
// rcu_periph_clock_enable(RCU_GPIOB);
//
// gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_1);
// gpio_output_options_set(GPIOB, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_1);
// gpio_bit_write(GPIOB, GPIO_PIN_1, RESET);
while(1){
}
@ -106,6 +68,5 @@ int fputc(int ch, FILE *f)
{
usart_data_transmit(USART0, (uint8_t)ch);
while(RESET == usart_flag_get(USART0, USART_FLAG_TBE));
return ch;
}

138
src/systick.c
View File

@ -1,83 +1,117 @@
/*!
\file systick.c
\brief the systick configuration file
\version 2024-02-22, V2.1.0, firmware for GD32E23x
*/
/*
Copyright (c) 2024, GigaDevice Semiconductor Inc.
Copyright (c) 2024, GigaDevice Semiconductor inc.
Redistribution and use in source and binary forms, with or without modification,
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
#include "gd32e23x.h"
#include "systick.h"
volatile static uint32_t delay;
volatile static float count_1us = 0;
volatile static float count_1ms = 0;
/*!
\brief configure systick
\param[in] none
\param[out] none
\retval none
*/
/**
* ************************************************************************
* @brief 配置 SysTick 定时器
*
*
* ************************************************************************
*/
void systick_config(void)
{
/* setup systick timer for 1000Hz interrupts */
if(SysTick_Config(SystemCoreClock / 1000U)){
/* capture error */
while(1){
}
}
/* configure the systick handler priority */
NVIC_SetPriority(SysTick_IRQn, 0x00U);
//设置了 SysTick 定时器的时钟源为 HCLK/8
systick_clksource_set(SYSTICK_CLKSOURCE_HCLK_DIV8);
//计算了每微秒所需的 SysTick 计数值
count_1us = (float)SystemCoreClock/8000000;
//计算了每毫秒所需的 SysTick 计数值
count_1ms = (float)count_1us * 1000;
}
/*!
\brief delay a time in milliseconds
\param[in] count: count in milliseconds
\param[out] none
\retval none
*/
void delay_1ms(uint32_t count)
/**
* ************************************************************************
* @brief delay_us 微秒延时函数
*
* @param[in] count 微秒值
*
* ************************************************************************
*/
void delay_us(uint32_t count)
{
delay = count;
uint32_t ctl;
//设置 SysTick 计数器的装载值
SysTick->LOAD = (uint32_t)(count * count_1us);
//清零 SysTick 计数器，以确保计数器从零开始计数
SysTick->VAL = 0x0000U;
//使能 SysTick 定时器，开始进行计数
SysTick->CTRL = SysTick_CTRL_ENABLE_Msk;
//等待 SysTick 计数器的计数值达到装载值时退出
do
{
ctl = SysTick->CTRL; //读取 CTRL 寄存器的值
}while((ctl & SysTick_CTRL_ENABLE_Msk)&&!(ctl & SysTick_CTRL_COUNTFLAG_Msk));
//循环退出，禁用 SysTick 定时器
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
//将 SysTick 计数器的当前值清零，以便下次使用
SysTick->VAL = 0x0000U;
while(0U != delay){
}
}
/*!
\brief delay decrement
\param[in] none
\param[out] none
\retval none
*/
void delay_decrement(void)
/**
* ************************************************************************
* @brief delay_ms 毫秒延时函数
*
* @param[in] count 毫秒值
*
* ************************************************************************
*/
void delay_ms(uint32_t count)
{
if(0U != delay){
delay--;
}
uint32_t ctl;
//设置 SysTick 计数器的装载值
SysTick->LOAD = (uint32_t)(count * count_1ms);
//清零 SysTick 计数器，以确保计数器从零开始计数
SysTick->VAL = 0x0000U;
//使能 SysTick 定时器，开始进行计数
SysTick->CTRL = SysTick_CTRL_ENABLE_Msk;
//等待 SysTick 计数器的计数值达到装载值时退出
do
{
ctl = SysTick->CTRL; //读取 CTRL 寄存器的值
}while((ctl&SysTick_CTRL_ENABLE_Msk)&&!(ctl & SysTick_CTRL_COUNTFLAG_Msk));
//循环退出，禁用 SysTick 定时器
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
//将 SysTick 计数器的当前值清零，以便下次使用
SysTick->VAL = 0x0000U;
}