Posted by Radik21 on 2019-10-19 10:42

Hello!
Please help in setting interrupts. I’ve been tormented for several days. The program does not fall into interruption.

/**
******************************************************************************
* @file main.c
* @author Ac6
* @version V1.0
* @date 01-December-2013
* @brief Default main function.
******************************************************************************

• /

1. include “stm32f30x.h”
2. include “stm32f30x_exti.h”
3. include “stm32f30x_rcc.h”
4. include “stm32f30x_gpio.h”
5. include “stm32f30x_syscfg.h”
6. include “stm32f30x_dac.h”

void init(void);
unsigned short count=0;

void COMP4_5_6_IRQHandler(void) {
EXTI_ClearITPendingBit(EXTI_Line30);
count++;

}

int main() {
init();
while(1) {
}
}

void init(void) {
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);

GPIO_InitTypeDef gpio_init;
gpio_init.GPIO_Mode = GPIO_Mode_AN;
gpio_init.GPIO_PuPd = GPIO_PuPd_NOPULL;
gpio_init.GPIO_Pin = GPIO_Pin_0;
GPIO_Init(GPIOB, &gpio_init);

COMP_InitTypeDef comp_init;
comp_init.COMP_InvertingInput = COMP_InvertingInput_1_4VREFINT;
comp_init.COMP_NonInvertingInput = COMP_NonInvertingInput_IO1;
comp_init.COMP_OutputPol = COMP_OutputPol_NonInverted;
comp_init.COMP_Output = COMP_Output_None;
comp_init.COMP_Hysteresis = COMP_Hysteresis_No;
comp_init.COMP_Mode = COMP_Mode_HighSpeed;
COMP_Init(COMP_Selection_COMP4, &comp_init);
COMP_Cmd(COMP_Selection_COMP4, ENABLE);

EXTI_InitTypeDef exti_init;
exti_init.EXTI_Line = EXTI_Line30;
exti_init.EXTI_LineCmd = ENABLE;
exti_init.EXTI_Mode = EXTI_Mode_Event;
exti_init.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_Init(&exti_init);

NVIC_InitTypeDef nvic_init;
nvic_init.NVIC_IRQChannel = COMP4_5_6_IRQn;
nvic_init.NVIC_IRQChannelSubPriority = 1;
nvic_init.NVIC_IRQChannelPreemptionPriority = 1;
nvic_init.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvic_init);
}