diff options
| author | Jim Mussared <jim.mussared@gmail.com> | 2020-07-20 16:58:10 +1000 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2020-07-20 23:26:41 +1000 |
| commit | 9d823a5d9a6730edde8e1df1e5ff4add1ad17094 (patch) | |
| tree | ebad885e38b5d7edde4ad0cd16d7eb5447890df1 /examples/bluetooth/ble_temperature.py | |
| parent | 3c7ca2004c78ec386e136b947ed5e05a39b61aaf (diff) | |
extmod/modbluetooth: Add event for "indicate acknowledgement".
This commit adds the IRQ_GATTS_INDICATE_DONE BLE event which will be raised
with the status of gatts_indicate (unlike notify, indications require
acknowledgement).
An example of its use is added to ble_temperature.py, and to the multitests
in ble_characteristic.py.
Implemented for btstack and nimble bindings, tested in both directions
between unix/btstack and pybd/nimble.
Diffstat (limited to 'examples/bluetooth/ble_temperature.py')
| -rw-r--r-- | examples/bluetooth/ble_temperature.py | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/examples/bluetooth/ble_temperature.py b/examples/bluetooth/ble_temperature.py index fd24e74d7..0e2da2239 100644 --- a/examples/bluetooth/ble_temperature.py +++ b/examples/bluetooth/ble_temperature.py @@ -13,13 +13,14 @@ from micropython import const _IRQ_CENTRAL_CONNECT = const(1) _IRQ_CENTRAL_DISCONNECT = const(2) +_IRQ_GATTS_INDICATE_DONE = const(20) # org.bluetooth.service.environmental_sensing _ENV_SENSE_UUID = bluetooth.UUID(0x181A) # org.bluetooth.characteristic.temperature _TEMP_CHAR = ( bluetooth.UUID(0x2A6E), - bluetooth.FLAG_READ | bluetooth.FLAG_NOTIFY, + bluetooth.FLAG_READ | bluetooth.FLAG_NOTIFY | bluetooth.FLAG_INDICATE, ) _ENV_SENSE_SERVICE = ( _ENV_SENSE_UUID, @@ -52,15 +53,21 @@ class BLETemperature: self._connections.remove(conn_handle) # Start advertising again to allow a new connection. self._advertise() + elif event == _IRQ_GATTS_INDICATE_DONE: + conn_handle, value_handle, status, = data - def set_temperature(self, temp_deg_c, notify=False): + def set_temperature(self, temp_deg_c, notify=False, indicate=False): # Data is sint16 in degrees Celsius with a resolution of 0.01 degrees Celsius. # Write the local value, ready for a central to read. self._ble.gatts_write(self._handle, struct.pack("<h", int(temp_deg_c * 100))) - if notify: + if notify or indicate: for conn_handle in self._connections: - # Notify connected centrals to issue a read. - self._ble.gatts_notify(conn_handle, self._handle) + if notify: + # Notify connected centrals. + self._ble.gatts_notify(conn_handle, self._handle) + if indicate: + # Indicate connected centrals. + self._ble.gatts_indicate(conn_handle, self._handle) def _advertise(self, interval_us=500000): self._ble.gap_advertise(interval_us, adv_data=self._payload) @@ -76,7 +83,7 @@ def demo(): while True: # Write every second, notify every 10 seconds. i = (i + 1) % 10 - temp.set_temperature(t, notify=i == 0) + temp.set_temperature(t, notify=i == 0, indicate=False) # Random walk the temperature. t += random.uniform(-0.5, 0.5) time.sleep_ms(1000) |