freeRTOS xTimer创建从'char *'到'constsigned char *'的无效转换[-fpermissive]

Question

Hi many thanks for your contribution, I added the code to create a task timer that I need to run some work regularly, when I compile it gives me an error,i do not understand how to solve it, I looked in the various discussions but i could not find anything.

    #include “esp_common.h”
    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #include “esp_wps.h”
    #include “freertos/timers.h”
    #include “freertos/FreeRTOS.h”
    #include “freertos/task.h”
    #include “freertos/queue.h”

    xTimerHandle timer;

    void callback_timer (xTimerHandle xTimer)
    {
    }

    timer = xTimerCreate("timer",5000/portTICK_RATE_MS,pdTRUE,(void *)0, 
    callback_timer);

[Clang IntelliSense] Error: no matching function for call to 'xTimerCreate'

Errore invalid conversion from 'char*' to 'const signed char*' [-fpermissive]

Please help me

Many thanks

Answer 1

Just cast the "timer" string to const signed char

The code will look like this:

timer = xTimerCreate((const signed char *)"timer",5000/portTICK_RATE_MS,pdTRUE,(void *)0, 
callback_timer);