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commit
be15885669
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# This example demonstrates a simple temperature sensor peripheral.
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#
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# The sensor's local value updates every second, and it will notify
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# any connected central every 10 seconds.
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import bluetooth
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import random
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import struct
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import time
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from ble_advertising import advertising_payload
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from micropython import const
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_IRQ_CENTRAL_CONNECT = const(1)
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_IRQ_CENTRAL_DISCONNECT = const(2)
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_IRQ_GATTS_INDICATE_DONE = const(20)
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_FLAG_READ = const(0x0002)
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_FLAG_NOTIFY = const(0x0010)
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_FLAG_INDICATE = const(0x0020)
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# org.bluetooth.service.environmental_sensing
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_ENV_SENSE_UUID = bluetooth.UUID(0x181A)
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# org.bluetooth.characteristic.temperature
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_TEMP_CHAR = (
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bluetooth.UUID(0x2A6E),
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_FLAG_READ | _FLAG_NOTIFY | _FLAG_INDICATE,
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)
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_ENV_SENSE_SERVICE = (
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_ENV_SENSE_UUID,
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(_TEMP_CHAR,),
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)
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# org.bluetooth.characteristic.gap.appearance.xml
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_ADV_APPEARANCE_GENERIC_THERMOMETER = const(768)
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class BLETemperature:
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def __init__(self, ble, name="PORTENTA_BLE"):
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self._ble = ble
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self._ble.active(True)
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self._ble.irq(self._irq)
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((self._handle,),) = self._ble.gatts_register_services((_ENV_SENSE_SERVICE,))
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self._connections = set()
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self._payload = advertising_payload(
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name=name, services=[_ENV_SENSE_UUID], appearance=_ADV_APPEARANCE_GENERIC_THERMOMETER
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)
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self._advertise()
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def _irq(self, event, data):
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# Track connections so we can send notifications.
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if event == _IRQ_CENTRAL_CONNECT:
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conn_handle, _, _ = data
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self._connections.add(conn_handle)
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elif event == _IRQ_CENTRAL_DISCONNECT:
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conn_handle, _, _ = data
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self._connections.remove(conn_handle)
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# Start advertising again to allow a new connection.
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self._advertise()
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elif event == _IRQ_GATTS_INDICATE_DONE:
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conn_handle, value_handle, status = data
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def set_temperature(self, temp_deg_c, notify=False, indicate=False):
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# Data is sint16 in degrees Celsius with a resolution of 0.01 degrees Celsius.
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# Write the local value, ready for a central to read.
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self._ble.gatts_write(self._handle, struct.pack("<h", int(temp_deg_c * 100)))
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if notify or indicate:
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for conn_handle in self._connections:
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if notify:
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# Notify connected centrals.
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self._ble.gatts_notify(conn_handle, self._handle)
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if indicate:
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# Indicate connected centrals.
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self._ble.gatts_indicate(conn_handle, self._handle)
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def _advertise(self, interval_us=500000):
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self._ble.gap_advertise(interval_us, adv_data=self._payload)
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def demo():
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ble = bluetooth.BLE()
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temp = BLETemperature(ble)
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t = 25
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i = 0
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while True:
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# Write every second, notify every 10 seconds.
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i = (i + 1) % 10
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temp.set_temperature(t, notify=i == 0, indicate=False)
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# Random walk the temperature.
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t += random.uniform(-0.5, 0.5)
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time.sleep_ms(1000)
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if __name__ == "__main__":
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demo()
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@ -1 +1 @@
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Subproject commit d592eaf460244b434d682ce6a8d14a9098f4b16f
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Subproject commit dfed71345fc2191fb48191dead9ee6f827d6a9e0
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@ -126,7 +126,7 @@
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#endif
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// Enable FAST (20+ KBs).
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#define IMLIB_ENABLE_FAST
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//#define IMLIB_ENABLE_FAST
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// Enable find_template()
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#define IMLIB_FIND_TEMPLATE
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@ -141,10 +141,10 @@
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#define IMLIB_ENABLE_DESCRIPTOR
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// Enable find_hog()
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#define IMLIB_ENABLE_HOG
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//#define IMLIB_ENABLE_HOG
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// Enable selective_search()
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#define IMLIB_ENABLE_SELECTIVE_SEARCH
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//#define IMLIB_ENABLE_SELECTIVE_SEARCH
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// Enable STM32 DMA2D
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#define IMLIB_ENABLE_DMA2D
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@ -152,7 +152,7 @@
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#define OMV_FB_SIZE (4M) // FB memory: header + VGA/GS image
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#define OMV_FB_ALLOC_SIZE (3M) // minimum fb alloc size
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#define OMV_STACK_SIZE (64K)
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#define OMV_HEAP_SIZE (170K)
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#define OMV_HEAP_SIZE (160K)
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#define OMV_SDRAM_SIZE (8 * 1024 * 1024) // This needs to be here for UVC firmware.
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#define OMV_LINE_BUF_SIZE (11 * 1024) // Image line buffer round(2592 * 2BPP * 2 buffers).
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@ -21,6 +21,8 @@ MICROPY_PY_ULAB = 1
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MICROPY_PY_WINC1500 = 0
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MICROPY_PY_LWIP = 1
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MICROPY_PY_NETWORK_CYW43 = 1
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MICROPY_PY_BLUETOOTH = 1
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MICROPY_BLUETOOTH_NIMBLE = 1
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MICROPY_PY_AUDIO = 1
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MICROPY_PY_MICRO_SPEECH = 1
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MICROPY_PY_LCD = 1
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@ -9,4 +9,6 @@
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#ifndef __ULAB_CONFIG_H__
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#define __ULAB_CONFIG_H__
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// Override ulab defaults here.
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#define NDARRAY_BINARY_USES_FUN_POINTER (1)
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#define ULAB_SCIPY_HAS_OPTIMIZE_MODULE (1)
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#endif //__ULAB_CONFIG_H__
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