Greetings!
I am using nRF52, SDK14.2, and NUS with MTU = 64.
I want to transmit 1000 byte string over BLE upon reception of any character to "nus_data_handler"
I have divided "main_buf" into 50 bytes data packets and am trying to send them over BLE.
Please refer to following code:
static void nus_data_handler(ble_nus_evt_t * p_evt)
{
if (p_evt->type == BLE_NUS_EVT_RX_DATA)
{
uint32_t err_code; int i=0,j=0; uint16_t len = 50; uint8_t data_arr[50];
char* main_buf = {"..."}; //1000 bytes of string data
for (j=0;j<1000;j++)
{
data_arr[i] = main_buf[j];
i++;
if(i==len)
{
i=0;
ble_nus_string_send(&m_nus, data_arr, &len); //transmits 50 byte packets over ble
}
}
}
}
Problem: I can receive only partial string.
In nRFconnect app, I can receive only 4-string packets (200 bytes) out of 1000 bytes transmitted.
If uint16_t len = 5; uint8_t data_arr[5]; instead of length 50; I could receive only 7-string packets each of 5 bytes (=35 bytes received out of 1000bytes).
Tried with:
do
{
err_code = ble_nus_string_send(&m_nus, data_arr, &len);
if ( (err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_BUSY) )
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
In nRFconnect: connection terminates by mentioning: Error 133 (0x85): GATT ERROR and Error 8 (0x08): GATT CONN TIMEOUT.
Please provide your view and suggestions!
