Trigger saadc sample task with ppi on a ble rscs profile

RE: Trigger saadc sample task with ppi on a ble rscs profile

MartinBL — Fri, 13 Apr 2018 13:04:03 GMT

Glad it worked. It is hard to say why it would suddenly work like that though. I usually modify the weak error handler like this to make it print out the information to a terminal when something asserts:

__WEAK void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)
{
    static error_info_t  * p_error_info;
    p_error_info = (error_info_t*)info;
    NRF_LOG_ERROR("Error: ID: %d, PC: 0x%X\n\r", id, pc);
    NRF_LOG_ERROR("Error: Code: 0x%04X (%d), Line: %d, File: %s\n\r", p_error_info->err_code, p_error_info->err_code, p_error_info->line_num, (uint32_t)p_error_info->p_file_name);
    NRF_LOG_FINAL_FLUSH();
    ...
    ...

RE: Trigger saadc sample task with ppi on a ble rscs profile

OlivierMun — Thu, 12 Apr 2018 15:37:44 GMT

So I tried to debug the program and... it worked !

I just don't understand what the problem was, so now it works as I wanted to, although I didn't change anything !

Thanks for the support,

Olivier

RE: Trigger saadc sample task with ppi on a ble rscs profile

OlivierMun — Thu, 12 Apr 2018 14:56:21 GMT

It's ok, my bad, I have found app_error_handler()

So the app_error_handler lokks like this :

/*lint -save -e14 */
void app_error_handler(ret_code_t error_code, uint32_t line_num, const uint8_t * p_file_name)
{
    error_info_t error_info =
    {
        .line_num    = line_num,
        .p_file_name = p_file_name,
        .err_code    = error_code,
    };
    while(1);
    app_error_fault_handler(NRF_FAULT_ID_SDK_ERROR, 0, (uint32_t)(&error_info));

    UNUSED_VARIABLE(error_info);
}

I just added the "while(1);" loop in order to follow the post you send me.

So I debug the code and it stopped in the app_error_fault_handler() :

__WEAK void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)
{
    NRF_LOG_FINAL_FLUSH();

#ifndef DEBUG
    NRF_LOG_ERROR("Fatal error");
#else
    switch (id)
    {
#if defined(SOFTDEVICE_PRESENT) && SOFTDEVICE_PRESENT
        case NRF_FAULT_ID_SD_ASSERT:
            NRF_LOG_ERROR("SOFTDEVICE: ASSERTION FAILED");
            break;
        case NRF_FAULT_ID_APP_MEMACC:
            NRF_LOG_ERROR("SOFTDEVICE: INVALID MEMORY ACCESS");
            break;
#endif
        case NRF_FAULT_ID_SDK_ASSERT:
        {
            assert_info_t * p_info = (assert_info_t *)info;
            NRF_LOG_ERROR("ASSERTION FAILED at %s:%u",
                          p_info->p_file_name,
                          p_info->line_num);
            break;
        }
        case NRF_FAULT_ID_SDK_ERROR:
        {
            error_info_t * p_info = (error_info_t *)info;
            NRF_LOG_ERROR("ERROR %u [%s] at %s:%u",
                          p_info->err_code,
                          nrf_strerror_get(p_info->err_code),
                          p_info->p_file_name,
                          p_info->line_num);
            break;
        }
        default:
            NRF_LOG_ERROR("UNKNOWN FAULT at 0x%08X", pc);
            break;
    }
#endif

    NRF_BREAKPOINT_COND;
    // On assert, the system can only recover with a reset.

#ifndef DEBUG
    NRF_LOG_WARNING("System reset");
    NVIC_SystemReset();
#else
    app_error_save_and_stop(id, pc, info);
#endif // DEBUG
}

/*lint -restore */

at this line :

NRF_BREAKPOINT_COND;

my screen looks like this :

Thanks for your help,

Olivier

RE: Trigger saadc sample task with ppi on a ble rscs profile

OlivierMun — Thu, 12 Apr 2018 13:54:27 GMT

I'm using Segger, but anyway, I'm following the step by step debug routine explained in the post.

So went to the definition of APP_ERROR_CHECK() which calls APP_ERROR_HANDLER().

I went to the definition of APP_ERROR_HANDLER() which calls app_error_handler().

I wanted to go to the definition of app_error_handler() but it says "Can't find symbol".

So maybe I did not include the right module ?

I've included app_error.c as in the example of nordic.

Here is the definition of APP_ERROR_CHEK()

#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "app_error.h"
#include "ble.h"
#include "ble_err.h"
#include "ble_hci.h"
#include "ble_srv_common.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_bas.h"
#include "ble_rscs.h"
#include "ble_dis.h"
#include "ble_conn_params.h"
#include "sensorsim.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "app_timer.h"
#include "peer_manager.h"
#include "bsp_btn_ble.h"
#include "fds.h"
#include "ble_conn_state.h"
#include "nrf_ble_gatt.h"

//accelerometer
#include "nrf_drv_twi.h"
#include "boards.h"
#include "app_util_platform.h"

//saadc
#include "nrf_drv_timer.h"
#include "nrf_drv_saadc.h"
#include "nrf_drv_ppi.h"



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

and here are my includes :

/**@brief Macro for calling error handler function.
 *
 * @param[in] ERR_CODE Error code supplied to the error handler.
 */
#ifdef DEBUG
#define APP_ERROR_HANDLER(ERR_CODE)                                    \
    do                                                                 \
    {                                                                  \
        app_error_handler((ERR_CODE), __LINE__, (uint8_t*) __FILE__);  \
    } while (0)
#else
#define APP_ERROR_HANDLER(ERR_CODE)                                    \
    do                                                                 \
    {                                                                  \
        app_error_handler_bare((ERR_CODE));                            \
    } while (0)
#endif
/**@brief Macro for calling error handler function if supplied error code any other than NRF_SUCCESS.
 *
 * @param[in] ERR_CODE Error code supplied to the error handler.
 */
#define APP_ERROR_CHECK(ERR_CODE)                           \
    do                                                      \
    {                                                       \
        const uint32_t LOCAL_ERR_CODE = (ERR_CODE);         \
        if (LOCAL_ERR_CODE != NRF_SUCCESS)                  \
        {                                                   \
            APP_ERROR_HANDLER(LOCAL_ERR_CODE);              \
        }                                                   \
    } while (0)

Thanks for your response !

Olivier

RE: Trigger saadc sample task with ppi on a ble rscs profile

MartinBL — Thu, 12 Apr 2018 13:39:45 GMT

Hi,

Do you know where your code is stuck? It may have ended up in an endless while loop in an error handler. Have you tried debugging like this?