Hi,
Im trying to send data via the NUS service which is larger than 20 bytes. I understand that I have to break down the data into chunks in this case, which is what I'm trying to do. However, I see that if I send exactly 20bytes from the nRF UART v2.0 Android app to my nrf52823 application the data pointer (uint8_t * p_data) in the nus_data_handler function seems empty even though the length is showing 20. I tested my assumption with the following code:
static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length) {
uint8_t buf[21];
memcpy(buf, p_data, 20);
buf[20] = 0;
SEGGER_RTT_printf(0, "Data Received (buf): %s\n", buf);
SEGGER_RTT_printf(0, "Data Received: %s; Length: %d\n", p_data, length);
decode_nus_message(p_data, length); //my code
}
I see on the RTT Viewer:
0> Data Received (buf):
0> Data Received: ; Length: 20
I'm thinking this might be a bug in the softdevice code copying the data to the pointer for the event handler. Maybe a strcpy was used instead of a memcpy?
Or is this expected behavior?
