Hi,
Today, i try to use the UART SERVICE from nordic on both smartphone and NRF51. I succeed to send data between the two. But now, i want to send data longer than 20 bytes.
My idea is to cut the long data in lot of 20 bytes data. I need a response for each packet of 20 bytes to known if the data is good or if i need to ask to send a second time.
I use on my NRF51 dev board : nrf uart ota sample I use on my Smartphone android : nrf uart app android
on my Android app, to receive my data, i use this code :
//*********************//
if (action.equals(UartService.ACTION_DATA_AVAILABLE)) {
final byte[] txValue = intent.getByteArrayExtra(UartService.EXTRA_DATA);
//AJOUTER CODE DE DESENCAPSULATION C1111 ------------------------------------------
final byte[] tx_unencaps = new byte[500];
//---------------------------------------------------------------------------------
runOnUiThread(new Runnable() {
public void run() {
try {
//AJOUTER CODE DE DESENCAPSULATION C1111 ------------------------------------------
ProtocolUartOTA.PP_UART_OTA_unencapsulate(txValue, tx_unencaps);
//---------------------------------------------------------------------------------
String text = new String(tx_unencaps, "UTF-8");
String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
listAdapter.add("["+currentDateTimeString+"] RX: "+text);
messageListView.smoothScrollToPosition(listAdapter.getCount() - 1);
} catch (Exception e) {
Log.e(TAG, e.toString());
}
}
});
}
//*********************//
i use this code to send :
btnSend.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
EditText editText = (EditText) findViewById(R.id.sendText);
String message = editText.getText().toString();
byte[] value;
byte[] mess_encaps = new byte[500];
byte[] envoie = new byte[20];
int i = 0;
//BleUartHandle BleUartHandleSession = new BleUartHandle();
try {
//send data to service
value = message.getBytes("UTF-8");
// AJOUTER CODE D'ENCAPSULATION C2222 -----------------------------------------
ProtocolUartOTA.PP_UART_OTA_encapsulate(value, value.length, mess_encaps);
while(i < mess_encaps.length) {
for(int j = 0; j < 20; j++)
{
envoie[j] = mess_encaps[i];
i++;
}
mService.writeRXCharacteristic(envoie);
}
//BleUartHandleSession.SendDataOverUartOta(value, mService);
//-----------------------------------------------------------------------------
//mService.writeRXCharacteristic(value);
//Update the log with time stamp
String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
listAdapter.add("["+currentDateTimeString+"] TX: "+ message);
messageListView.smoothScrollToPosition(listAdapter.getCount() - 1);
edtMessage.setText("");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
on my dev board, to receive and send i use :
static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length)
{
uint32_t err_code = 0;
uint8_t length_encaps = 0;
uint8_t p_data_encaps[500] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint8_t data_unen[500] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
INFOTRAME InfoTrame;
InitInfoTrame(&InfoTrame);
while (InfoTrame.NbTrameRecu < InfoTrame.NbTrameTotal)
PP_UART_OTA_unencapsulate(p_data, data_unen, &InfoTrame);
for (uint8_t i = 0; i < 1; i++) {}
length_encaps = PP_UART_OTA_encapsulate(data_unen, 15, p_data_encaps);
for (uint8_t i = 0; i < 1; i++) {}
/* for (uint32_t i = 0; i < length; i++)
{
while (app_uart_put(p_data[i]) != NRF_SUCCESS);
}
while (app_uart_put('\r') != NRF_SUCCESS);
while (app_uart_put('\n') != NRF_SUCCESS);*/
err_code = ble_nus_string_send(p_nus, p_data_encaps, length_encaps);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
}
Regards,
PS : My question is How to send 2 packets of 20 bytes in android java application with UART service.
