Receiving only one char through uart interrupt in Serial_uartes

[umrsraj]

Hi there,

I'm using nrf52840 DK and Custom board, SDK 15.1.0, Segger Embedded Studio(SES v5.20)

my issue is when i receive data from uart interrupt based on serial uartes example, i can only receive one char at a time. that means if i store that data in a char variable and should add to the char array then its works fine, but i want to read the complete data on single shot, so how can i do that,? i'm i doing anything wrong.

void GSM_InterruptHandler(nrf_serial_t const *p_serial, nrf_serial_event_t event)
{
static uint8_t index1=0;
char bb;
switch (event)
  {
    case NRF_SERIAL_EVENT_RX_DATA:
      if((nrf_serial_read(&serial0_uarte, &bb, sizeof(bb), &readed_size, 500))==NRF_SUCCESS)
      {
      gsm_d.RxBuf[index1++] = bb;
      rx_done = true;
      }
      break;
    case NRF_SERIAL_EVENT_TX_DONE:
      tx_done = true;
      break;
    case NRF_SERIAL_EVENT_DRV_ERR:
      APP_ERROR_CHECK(nrf_serial_uninit(&serial0_uarte));
      APP_ERROR_CHECK(nrf_serial_init(&serial0_uarte, &m_uarte1_drv_config, &serial0_config));
      break;
    case NRF_SERIAL_EVENT_FIFO_ERR:
      break;
    default:
      break;
  }
}

Im reading the rx buff like this, but its triggers multiple times for every rx event, and i need like this

case NRF_SERIAL_EVENT_RX_DATA:
      if((nrf_serial_read(&serial0_uarte, &gsm_d.RxBuf, sizeof(gsm_d.RxBuf), &readed_size, NRF_SERIAL_MAX_TIMEOUT))==NRF_SUCCESS)
      {
      rx_done = true;
      }
      break;

so please help me

Thanks in advance

Best Regards

Raj

[Susheel Nuguru]

Hi Rajender.

I have now looked into the nrf_serial implementation and it is possible that you are using UART configuration instead of UARTE. Can you please attach your sdk_config.h (best would be to attach your project here) so that i can quickly review the peripheral configuration you are using?

[umrsraj]

serial_uartes - GSM(sms).zip

Hi Susheel,

Thanks for the reply,

Here i am attaching zip file of my project, i think you can work around with this,

and my problem in this project are,1) taking bunch of data at single shot only, 2)Response of GSM module was not catching completely (ex: if it should say, "\r\nOK\r\nCONNECT\r\n", Its saying "\r\nOK\r\nCONN"

Please check on the issue for data loss alos

Best Regards,

Raj.

[Susheel Nuguru]

Looking at your code you have 

#define SERIAL_BUFF_TX_SIZE 1
#define SERIAL_BUFF_RX_SIZE 1

You clearly have set the TX_SIZE/RX_SIZE to 1 limiting the amount of rx transaction to 1 char. 

Please check to see if you can increase it to a bigger number.

[umrsraj]

libuarte - GSM(sms).zip

Hi susheel,

Yes, i found out SERIAL_BUFF_TX_SIZE  in the man.c, but if i use the libuarte example then also im getting only one byte at a time, and i didn't find any buf size specified in the main.c

please suggest the changes in the libuartes example also

PFA for the libuarte project file in this library also im getting only one byte at a time

and this example is from SDKv17.0.2

best Regards

Raj

[umrsraj]

Hi Susheel,

This replay is for formal remainder for the replay to solve our problem, we are awaiting for your replay.

please give the replay asap, since we have to solve this problem asap, and our development on this project is on hold because of this issue, 

so please help us

Best Regards,

Raj