Setting a PWM in a seperat library

RE: Setting a PWM in a seperat library

Mechatroniker — Thu, 29 Apr 2021 12:52:01 GMT

I finally found the mistake :)

The command APP_PWM_INSTANCE(motor_pwm, 1); must be placed before the main.

Thanks for your help 🙂

RE: Setting a PWM in a seperat library

awneil — Wed, 28 Apr 2021 10:06:02 GMT

[quote userid="103445" url="~/f/nordic-q-a/74499/setting-a-pwm-in-a-seperat-library/307129#307129"]writes 0x00000004 to the ErrCode[/quote]

So look up that value to see what it means.

The documentation for each SDK function call lists its possible error returns.

You can find the documentation by doing a 'Go To Declaration' (not definition) - the documentation is in the comments in the header file.

RE: Setting a PWM in a seperat library

Mechatroniker — Wed, 28 Apr 2021 06:00:28 GMT

I tried again after restarting all systems and now I get the ErrCode 0x00000008.

RE: Setting a PWM in a seperat library

Mechatroniker — Wed, 28 Apr 2021 05:47:33 GMT

Thank you very much for your quick reply.
When I run the program with the debugger, it writes at the position
err_code = app_pwm_init(&motor_pwm, &pwm_config, status_pwm_handler);
0x000000 in the ErrCode. If I continue with the debugger it jumps back to the main.c file. If I go further it jumps back to the functions_pwm.c file and writes 0x00000004 to the ErrCode, then it jumps to the app_error_wak.c file and stays at the position
NRF_BREAKPOINT_COND;
Also with several further switching the program remains now at this place.

In the Stack this Code appears:

Here my C Code again:

main.c

#include <stdbool.h>
#include <stdint.h>
#include "nrf.h"
#include "app_error.h"
#include "bsp.h"
#include "nrf_delay.h"
#include "app_pwm.h"


#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"

#include "funktionen_pwm.h"

uint32_t an = 99;
uint32_t aus = 1;



int main(void)
{
    #ifdef PIN
     pins_konfigurieren();
     nrf_gpio_pin_set(15);
      nrf_gpio_pin_clear(14);
    #endif

    initialisierung_pwm();

    while (true)
    {
        wert_setzen_pwm(an);
        nrf_delay_ms(3);
        wert_setzen_pwm(aus);
        nrf_delay_ms(2);

    }

}


/** @} */

funktionen_pwm.c

#include <stdbool.h>
#include <stdint.h>
#include "nrf.h"
#include "app_error.h"
#include "app_pwm.h"

const app_pwm_t motor_pwm;

void initialisierung_pwm(void)
{ 
    APP_PWM_INSTANCE(motor_pwm, 1);

    #define M_CONTR_PWM 16
    #define frequenz_teiler  1000

    static volatile bool status_pwm;
    void status_pwm_handler(uint32_t pwm_id)
    {
        status_pwm = true; 
    }
    ret_code_t err_code;
    app_pwm_config_t pwm_config = APP_PWM_DEFAULT_CONFIG_1CH(frequenz_teiler, M_CONTR_PWM);
    pwm_config.pin_polarity[0] = APP_PWM_POLARITY_ACTIVE_HIGH;
    err_code = app_pwm_init(&motor_pwm, &pwm_config, status_pwm_handler);
    APP_ERROR_CHECK(err_code);
    app_pwm_enable(&motor_pwm);
    while(app_pwm_channel_duty_set(&motor_pwm, 0, 99) == NRF_ERROR_BUSY);
}


void wert_setzen_pwm(uint16_t Wert_PWM)
{
     while(app_pwm_channel_duty_set(&motor_pwm, 0, Wert_PWM) == NRF_ERROR_BUSY);
}

funktionen_pwm.h

#ifndef FUNKTIONEN_PWM_H_
#define FUNKTIONEN_PWM_H_



void initialisierung_pwm(void);
void wert_setzen_pwm(uint16_t);


#endif

RE: Setting a PWM in a seperat library

awneil — Tue, 27 Apr 2021 14:07:52 GMT

[quote userid="103445" url="~/f/nordic-q-a/74499/setting-a-pwm-in-a-seperat-library"]the program sticks in the ErrCheck[/quote]

So use the debugger to put a breakpoint there, and see what the error is.

not as an image!