Today , I encountered issue while using interrupt , that when I write LOGS ( ESP_LOGI ) inside the interrupt , then I get the error .
I wanted to know whether it occurs because interrupt handler function should execute at a minimum time ?? Or is it some my fault in programming ??
Here is my Code :
Code: Select all
#include<stdio.h>
#include"freertos/FreeRTOS.h"
#include"freertos/task.h"
#include"esp_system.h"
#include"driver/uart.h"
#include"freertos/semphr.h"
#include"esp_log.h"
#include"driver/timer.h"
#define MAIN_TAG "MAIN"
static intr_handle_t s_timer_handle;
static void interrupt_time(void *args)
{
TIMERG0.int_clr_timers.t0 = 1 ; //This is for clearing the Interrupt that has been triggerd by the timer .
//Now writing the Code below for execution at the alarm
TIMERG0.hw_timer[0].config.alarm_en = 1;
ESP_LOGI(MAIN_TAG, " Alarm has been raised ");
}
void initialise_interrupt(uint64_t time)
{
//First Prepare the Configuration for the Timer
//: that is using its Structuture , then passing that Structure to the Timer Init funciton
timer_config_t config = {
.alarm_en = 1,//For setting the Alarm , as soon as the Value of Timer reaches particular value , it triggers interrrupt
.counter_en = 0,//This setting makes timer start as soons as it is configured
.intr_type = TIMER_INTR_LEVEL,//Don't Know wha this is for
.counter_dir = TIMER_COUNT_UP,
.auto_reload = 1, //Reloads the Timer automatically after interrupt
.divider = 80 , // Right now 1 uSec for 1 tick ( Simplyfing the calculation )
};
ESP_ERROR_CHECK(timer_init(TIMER_GROUP_0,TIMER_0,&config));
timer_set_counter_value(TIMER_GROUP_0, TIMER_0, 0);//This value is used when Timer auto reloads , it will be loaded to this value
timer_set_alarm_value(TIMER_GROUP_0 , TIMER_0,time);//Value of 60 * 10^6 has been set as delay
timer_enable_intr(TIMER_GROUP_0,TIMER_0);
ESP_ERROR_CHECK(timer_isr_register(TIMER_GROUP_0,TIMER_0,&interrupt_time, NULL , 0 , &s_timer_handle));//Registering the Interrrupt for the timer , this is called when the alarm is raised .
timer_start(TIMER_GROUP_0,TIMER_0);
}
void null_task(void *pvParam)
{
while(1)
{
ESP_LOGI(MAIN_TAG, "This is a null Tag ");
vTaskDelay(1000/portTICK_PERIOD_MS);
}
}
void app_main()
{
xTaskCreate(&null_task,"Printing VOID Logs ",2048 , NULL , 3, NULL);
initialise_interrupt(5000000);
}Here is the screenshot of my output :