I can't read on my uart

RE: I can't read on my uart

bjorn-spockeli — Mon, 01 Jul 2019 14:41:52 GMT

The NRF_ERROR_MODULE_NOT_INITIALIZED error should only be returned if the following evaluates to false:

if (!p_serial->p_ctx->p_config)
{
return NRF_ERROR_MODULE_NOT_INITIALIZED;
}

RE: I can't read on my uart

Geoffroy — Mon, 01 Jul 2019 14:10:44 GMT

yes right now i can read each data so that's good (i still have other tests to do)

i don't understand neither.

i understand to get an err 0x80 because my function event_handle wasn't in same file that def of uart OK.

but why there is an err for module not initialized after i could read data once I don't know !!!

RE: I can't read on my uart

bjorn-spockeli — Mon, 01 Jul 2019 14:00:21 GMT

Ok, so changing the timeout_ms variable to 0, i.e. executing the nrf_serial_read function as a non-blocking call fixed the issue? I do not see why that change resolves teh issue with nrf_serial_read returning 0x80, i.e. NRF_ERROR_MODULE_NOT_INITIALIZED.

RE: I can't read on my uart

Geoffroy — Mon, 01 Jul 2019 13:33:45 GMT

data isn't modified between calls.

i changed timeout value to 0 in nrf_serial_read() call and it works correctly now.

RE: I can't read on my uart

bjorn-spockeli — Mon, 01 Jul 2019 13:14:23 GMT

Then is sounds like the data pointed to by p_serial is modified between the calls. Can you print or set a breakpoint at the nrf_serial_read() call and see if the data is being modified between the calls?

Best regards

Bjørn

RE: I can't read on my uart

Geoffroy — Mon, 01 Jul 2019 13:00:59 GMT

well i finally included all code in same file (main.c)

i read value first time then error 0x80

RE: I can't read on my uart

bjorn-spockeli — Mon, 01 Jul 2019 12:55:39 GMT

It might be if the p_serial pointer passed to nrf_serial_read() function is not the same as the one the one defined in NRF_SERIAL_UART_DEF(serial1_uart, 1). Have you placed NRF_SERIAL_UART_DEF(serial1_uart, 1) in a common header file that that is included in both main and uart.c?

ret_code_t nrf_serial_read(nrf_serial_t const * p_serial,
                           void * p_data,
                           size_t size,
                           size_t * p_read,
                           uint32_t timeout_ms)
{
    ret_code_t ret;

    ASSERT(p_serial);
    if (!p_serial->p_ctx->p_config)
    {
        return NRF_ERROR_MODULE_NOT_INITIALIZED;
    }
    
    .
    .
    .
}

Best regards

Bjørn

RE: I can't read on my uart

Geoffroy — Mon, 01 Jul 2019 12:52:03 GMT

EDIT2 : i put all code in file main.c

now i receive correctly first value, but when i send another one i get ret = 0x80 NRF_ERROR_MODULE_NOT_INITIALIZED

where is the problem ?

RE: I can't read on my uart

Geoffroy — Mon, 01 Jul 2019 11:47:33 GMT

EDIT :

I add ret = to function nrf_serial_read to get err_code.

i get err_code 0x80 for NRF_ERROR_MODULE_NOT_INITIALIZED.

code for init (above) is in main.c and code for event_handle is in another file, uart.c could it be a problem ?