Metawear(GPIO)

Mark_L · July 2015

Hi Eric,

I also get some problem with the GPIO pin notification. Here is my code:

 public static class PlaceholderFragment extends Fragment implements ServiceConnection {

        private GPIO gpioCtrllr;
        public PlaceholderFragment() {
        }

        public void setBtDevice(BluetoothDevice device) {

            mwController= mwService.getMetaWearController(device);
            mwController.setRetainState(false);

            mwController.addDeviceCallback(new MetaWearController.DeviceCallbacks() {

                @Override
                public void connected() {

                    gpioCtrllr= (GPIO) mwController.getModuleController(Module.GPIO);
                    gpioCtrllr.setPinChangeType((byte) 10, GPIO.ChangeType.ANY);
                    gpioCtrllr.enablePinChangeNotification((byte) 0);

                    Toast.makeText(getActivity(), R.string.toast_connected, Toast.LENGTH_SHORT).show();
                }
            }).addModuleCallback(new GPIO.Callbacks() {
                @Override
                public void pinChangeDetected(byte pin, byte state) {
                    Log.i("MainActivity", String.format(Locale.US, "pin= %d, pin changed= %d",
                            pin, state));
                }
            });
            mwController.connect();}

and the logcat show "D/BluetoothGatt﹕ onNotify() - Device=D0:98:80:5B:E7:91 UUID=326a9006-85cb-9195-d9dd-464cfbbae75a" all the time even when I press the sensor to change the voltage up to 2.5V

and how the metawear notify me when the state changed by the way.

thanks,

Mark

Eric · July 2015

You configured pin change notifications for pin 10 but are enabling notifications for pin 0.

Mark_L · July 2015

Ok, thanks Eric, so meaing I change the 10 to 0 if I want to monitor the pin 0 state. but the Document is '10', I just copy from there. thanks

Mark_L · July 2015

and how the metawear notify me when the state changed? thanks Eric

Eric · July 2015

Ah I see, that's a type on my part; code snippet has been fixed. The MetaWear notifies you through the pinChangeDetected callback function, as outlined in the code block you were referencing.

Mark_L · July 2015

Hi Eric,

I understand it will notifies me by the pinChangeDetected, what you mean that is when the pin state be changed every time, it will execute what inside the

public void pinChangeDetected(byte pin, byte state) {
                    Log.i("MainActivity", String.format(Locale.US, "pin= %d, pin changed= %d",
                            pin, state));
                }

for this case, it will log and print the sentence, which is pin=%d, pin changed= %d in the logcat right? but seem can't.

Mark_L · July 2015

Hi Eric,

Thank you so much! and now I can get the notification when the state changed, after adding

gpioCtrllr.readDigitalInput((byte) 1);
gpioCtrllr.setDigitalInput((byte) 1, PullMode.NONE);

so now I can get what I want to get, but can you move to the kitkat one, I have a question about the accelerometer part for acceleration storing in array Thanks again.

Eric · August 2015

Good to hear you got everything working!

Metawear(GPIO)

Comments