printf doesn't work when implemented in a function.

[Sylvain]

Hello,

In one of my codes, I use the printf function. It works properly when implemented in the int main(void), but when I try to use it in a static void NAME (void){} function the printf don't print anything over the uart.

Are there any know behaviours about this ?

Config : Segger Embedded Studio, SDKs v15.0, Windows 10, PCA10056 0.12.0 2018.9

Best regards,
Sylvain.

[awneil]

How, exactly, did you "try to use it"?

Is that function ever called?

How to post source code:

[Sylvain]

/**@brief Handles events coming from the Custom MOX central module.
 */
static void cusmox_c_evt_handler(ble_cusmox_c_t * p_cusmox_c, ble_cusmox_c_evt_t * p_cusmox_c_evt)
{
    switch (p_cusmox_c_evt->evt_type)
    {
        case BLE_CUSMOX_C_EVT_DISCOVERY_COMPLETE:
        {
            ret_code_t err_code;

            err_code = ble_cusmox_c_handles_assign(&m_ble_cusmox_c,
                                                p_cusmox_c_evt->conn_handle,
                                                &p_cusmox_c_evt->params.peer_db);
            APP_ERROR_CHECK(err_code);
            //NRF_LOG_INFO("Sensor service discovered on conn_handle 0x%x.", p_cusmox_c_evt->conn_handle);
            printf("Sensor service discovered on conn_handle 0x%x.",p_cusmox_c_evt->conn_handle);

        default:
            // No implementation needed.
            break;
    }
}

Here's a part of the code. If I try to use printf function inside the service handle nothing is printed over the uart ...

[awneil]

Again, how do you know that line ever gets executed?

[Sylvain]

Because, I debugged the program with break-point.

[awneil]

Good.

But remember that we can't see you or your bench or your computer - so we don't know what you've done unless you tell us. 

Hence the question.

[Sylvain]

Have you an idea of where the problem could from ?

[Simon]

I will take a look at it upcoming monday/tuesday