Data Loss after ble_nus_data_send

[manobala12]

In uart_event_handle case  APP_UART_DATA_READY

UNUSED_VARIABLE(app_uart_get(&data_array[array_index]));

if ((array_index >= 240))

{

   memcpy(Ble_array_to_apk, data_array, sizeof(data_array));

   memset(data_array, 0, sizeof(data_array));

   overflowflag = true;

   length = array_index;

   array_index = 0;

}

In main fun inside for loop 

if (overflowflag == true)

{

  sequence += 1; 

  overflowflag = false;

  err_code = ble_nus_data_send(&m_nus, Ble_array_to_apk, &length, m_conn_handle); 

  memset(Ble_array_to_apk, 0, sizeof(Ble_array_to_apk));

}

err_code is success and also data loss is happen 

In stm32 transmitting 240 bytes with 20ms timer 

[Karl Ylvisaker]

Hello,

manobala12 said:

i got solution now there is no data loss 

Great, I am glad to read that! :) 

manobala12 said:

I changed min and max_conn_interval to 10

But 1MB data transmitting time 1min36sec it takes how can i reduce it

To analyze where the bottleneck in your throughput is it would be helpful if you could capture a sniffer trace of the communication between the devices. Are you familiar with the nRF Sniffer tool?

Best regards,
Karl