Writing to secure characteristic on nRF51822

RE: Writing to secure characteristic on nRF51822

Carles — Mon, 14 Oct 2013 06:44:11 GMT

Sorry, I meant the code on the nRF51 side.

RE: Writing to secure characteristic on nRF51822

Guest — Fri, 11 Oct 2013 03:38:59 GMT

I used following code to write data to characteristic.

//get services for device if(mBluetoothGatt != null) mBluetoothGattServices = mBluetoothGatt.getServices();

//get characteristics for a service chars = service.getCharacteristics();

//write hex data to characteristic mCharacteristic.setWriteType(BluetoothGattCharacteristic.WRITE_TYPE_NO_RESPONSE); mCharacteristic.setValue(dataToWrite); // ... and then "commit" changes to the peripheral mBluetoothGatt.writeCharacteristic(mCharacteristic);

RE: Writing to secure characteristic on nRF51822

Bastiaan — Fri, 11 Oct 2013 03:38:59 GMT

I used following code to write data to characteristic.

//get services for device if(mBluetoothGatt != null) mBluetoothGattServices = mBluetoothGatt.getServices();

//get characteristics for a service chars = service.getCharacteristics();

RE: Writing to secure characteristic on nRF51822

Carles — Thu, 10 Oct 2013 11:38:51 GMT

Hi there,

One of my characteristics advertises as write with no response to which I am trying to write some value. Android shows that it successfully performed write operation but the module doesn't receive anything.

Android cannot really know if the characteristic was written to successfully since you used a Write Command (Write Without Response) and not a Write Request to write to it.

Security could indeed be the problem, or maybe even permissions.

Could you post the code you used to add the characteristic?

That way we can take a look at what permissions and security you required.

Regards,

Carles