Send data to android from ble(nrf51822)?

RE: Send data to android from ble(nrf51822)?

ahmet — Fri, 30 Oct 2015 10:58:20 GMT

void onDataWritten(const GattCharacteristicWriteCBParams *params) { printf("hello world"); } //for mbed compiler pc.printf=is for serial comminacation.

RE: Send data to android from ble(nrf51822)?

MartinBL — Fri, 30 Oct 2015 10:44:25 GMT

The information in your first post doesn't really give us much to go on. Why do you use **pc.**printf in your comment and printf in your first post? Are both functions used to transmit a string over BLE to your phone?

RE: Send data to android from ble(nrf51822)?

ahmet — Thu, 29 Oct 2015 09:10:49 GMT

Yes this line prints nothing and yes It called.

RE: Send data to android from ble(nrf51822)?

MartinBL — Thu, 29 Oct 2015 08:48:58 GMT

So with this code characteristic.getStringValue(0) prints nothing?

Is onCharacteristicChanged called at all?

RE: Send data to android from ble(nrf51822)?

ahmet — Wed, 28 Oct 2015 15:21:05 GMT

pc.printf("%i, %i, %i\n", (int16_t)readings[0], (int16_t)readings[1], (int16_t)readings[2]); I can get data from nrf51822 to my phone.But I can't write it on my phone I am currently use this code above.How can I make android to get this line and convert it for its self and give me data which I want. As you can understand my problem on the android side? writeLine("Alinan Deger " + characteristic.getStringValue(0)) How can I use this android code and read data? Basicly I want to see accelerometer data on my phone which get by bluetooth.

RE: Send data to android from ble(nrf51822)?

MartinBL — Wed, 28 Oct 2015 15:12:54 GMT

Can you explain the problem in more detail? Where are you stuck? Are you able to receive any data at all on your phone? Do you know that your onDataWritten() function is working?