dc32-retro-tech-addon/firmware/retro_tech_fw/user/ch32v00x_it.c

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/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v00x_it.c
* Author : WCH
* Version : V1.0.0
* Date : 2022/08/08
* Description : Main Interrupt Service Routines.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include <ch32v00x_it.h>
#include <ch32v00x.h>
#include "src/adc.h"
#include "src/btn.h"
#include "src/led.h"
void NMI_Handler(void);
void HardFault_Handler(void);
void SysTick_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
/*********************************************************************
* @fn NMI_Handler
*
* @brief This function handles NMI exception.
*
* @return none
*/
void NMI_Handler(void)
{
}
/*********************************************************************
* @fn HardFault_Handler
*
* @brief This function handles Hard Fault exception.
*
* @return none
*/
void HardFault_Handler(void)
{
while (1);
}
volatile uint16_t ticnt;
volatile uint32_t uptime;
void SysTick_Handler(void)
{
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if (++ticnt > 0x1ff) {
ticnt = 0;
uptime++;
}
// send new LEDs (1/128 duty)
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if ((ticnt & 0x3) == 0) {
led_send();
}
// process buttons (1/512 duty)
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btn_poll();
// process ADC (1/256 duty)
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if ((ticnt & 0x1) == 0) {
adc_convert();
}
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if ((ticnt & 0x1) == 1) {
adc_read();
}
// clear comparison flag
SysTick->SR = 0;
return;
}