diff options
Diffstat (limited to 'examples/bluetooth/ble_temperature_central.py')
| -rw-r--r-- | examples/bluetooth/ble_temperature_central.py | 68 |
1 files changed, 40 insertions, 28 deletions
diff --git a/examples/bluetooth/ble_temperature_central.py b/examples/bluetooth/ble_temperature_central.py index 5c23a06453..14ea694a9e 100644 --- a/examples/bluetooth/ble_temperature_central.py +++ b/examples/bluetooth/ble_temperature_central.py @@ -9,33 +9,41 @@ import micropython from ble_advertising import decode_services, decode_name from micropython import const -_IRQ_CENTRAL_CONNECT = const(1 << 0) -_IRQ_CENTRAL_DISCONNECT = const(1 << 1) -_IRQ_GATTS_WRITE = const(1 << 2) -_IRQ_GATTS_READ_REQUEST = const(1 << 3) -_IRQ_SCAN_RESULT = const(1 << 4) -_IRQ_SCAN_COMPLETE = const(1 << 5) -_IRQ_PERIPHERAL_CONNECT = const(1 << 6) -_IRQ_PERIPHERAL_DISCONNECT = const(1 << 7) -_IRQ_GATTC_SERVICE_RESULT = const(1 << 8) -_IRQ_GATTC_CHARACTERISTIC_RESULT = const(1 << 9) -_IRQ_GATTC_DESCRIPTOR_RESULT = const(1 << 10) -_IRQ_GATTC_READ_RESULT = const(1 << 11) -_IRQ_GATTC_WRITE_STATUS = const(1 << 12) -_IRQ_GATTC_NOTIFY = const(1 << 13) -_IRQ_GATTC_INDICATE = const(1 << 14) -_IRQ_ALL = const(0xffff) + +_IRQ_CENTRAL_CONNECT = const(1 << 0) +_IRQ_CENTRAL_DISCONNECT = const(1 << 1) +_IRQ_GATTS_WRITE = const(1 << 2) +_IRQ_GATTS_READ_REQUEST = const(1 << 3) +_IRQ_SCAN_RESULT = const(1 << 4) +_IRQ_SCAN_COMPLETE = const(1 << 5) +_IRQ_PERIPHERAL_CONNECT = const(1 << 6) +_IRQ_PERIPHERAL_DISCONNECT = const(1 << 7) +_IRQ_GATTC_SERVICE_RESULT = const(1 << 8) +_IRQ_GATTC_CHARACTERISTIC_RESULT = const(1 << 9) +_IRQ_GATTC_DESCRIPTOR_RESULT = const(1 << 10) +_IRQ_GATTC_READ_RESULT = const(1 << 11) +_IRQ_GATTC_WRITE_STATUS = const(1 << 12) +_IRQ_GATTC_NOTIFY = const(1 << 13) +_IRQ_GATTC_INDICATE = const(1 << 14) +_IRQ_ALL = const(0xFFFF) # org.bluetooth.service.environmental_sensing _ENV_SENSE_UUID = bluetooth.UUID(0x181A) # org.bluetooth.characteristic.temperature _TEMP_UUID = bluetooth.UUID(0x2A6E) -_TEMP_CHAR = (_TEMP_UUID, bluetooth.FLAG_READ|bluetooth.FLAG_NOTIFY,) -_ENV_SENSE_SERVICE = (_ENV_SENSE_UUID, (_TEMP_CHAR,),) +_TEMP_CHAR = ( + _TEMP_UUID, + bluetooth.FLAG_READ | bluetooth.FLAG_NOTIFY, +) +_ENV_SENSE_SERVICE = ( + _ENV_SENSE_UUID, + (_TEMP_CHAR,), +) # org.bluetooth.characteristic.gap.appearance.xml _ADV_APPEARANCE_GENERIC_THERMOMETER = const(768) + class BLETemperatureCentral: def __init__(self, ble): self._ble = ble @@ -72,8 +80,10 @@ class BLETemperatureCentral: if connectable and _ENV_SENSE_UUID in decode_services(adv_data): # Found a potential device, remember it and stop scanning. self._addr_type = addr_type - self._addr = bytes(addr) # Note: addr buffer is owned by caller so need to copy it. - self._name = decode_name(adv_data) or '?' + self._addr = bytes( + addr + ) # Note: addr buffer is owned by caller so need to copy it. + self._name = decode_name(adv_data) or "?" self._ble.gap_scan(None) elif event == _IRQ_SCAN_COMPLETE: @@ -104,7 +114,9 @@ class BLETemperatureCentral: # Connected device returned a service. conn_handle, start_handle, end_handle, uuid = data if conn_handle == self._conn_handle and uuid == _ENV_SENSE_UUID: - self._ble.gattc_discover_characteristics(self._conn_handle, start_handle, end_handle) + self._ble.gattc_discover_characteristics( + self._conn_handle, start_handle, end_handle + ) elif event == _IRQ_GATTC_CHARACTERISTIC_RESULT: # Connected device returned a characteristic. @@ -132,7 +144,6 @@ class BLETemperatureCentral: if self._notify_callback: self._notify_callback(self._value) - # Returns true if we've successfully connected and discovered characteristics. def is_connected(self): return self._conn_handle is not None and self._value_handle is not None @@ -174,7 +185,7 @@ class BLETemperatureCentral: def _update_value(self, data): # Data is sint16 in degrees Celsius with a resolution of 0.01 degrees Celsius. - self._value = struct.unpack('<h', data)[0] / 100 + self._value = struct.unpack("<h", data)[0] / 100 return self._value def value(self): @@ -189,12 +200,12 @@ def demo(): def on_scan(addr_type, addr, name): if addr_type is not None: - print('Found sensor:', addr_type, addr, name) + print("Found sensor:", addr_type, addr, name) central.connect() else: nonlocal not_found not_found = True - print('No sensor found.') + print("No sensor found.") central.scan(callback=on_scan) @@ -204,7 +215,7 @@ def demo(): if not_found: return - print('Connected') + print("Connected") # Explicitly issue reads, using "print" as the callback. while central.is_connected(): @@ -216,7 +227,8 @@ def demo(): # print(central.value()) # time.sleep_ms(2000) - print('Disconnected') + print("Disconnected") + -if __name__ == '__main__': +if __name__ == "__main__": demo() |