def send_temp(count=50):
"""Sends out a fake temperature twice a second."""
with nrf as ble:
ble.name = b"nRF24L01"
print("available bytes in next payload:",
ble.available(chunk(temperature_service.buffer)))
for i in range(count):
if ble.available(chunk(temperature_service.buffer)) >= 0:
_prompt(count, i)
# broadcast a temperature measurement; 0x16 means service data
ble.advertise(temperature_service.buffer, data_type=0x16)
ble.hop_channel()
time.sleep(0.2)
def send_url(count=50):
"""Sends out a URL twice a second."""
with nrf as ble:
print("available bytes in next payload:",
ble.available(chunk(url_service.buffer)))
# NOTE we did NOT set a device name in this with block
for i in range(count):
# URLs easily exceed the nRF24L01's max payload length
if ble.available(chunk(url_service.buffer)) >= 0:
_prompt(count, i)
ble.advertise(url_service.buffer, 0x16)
ble.hop_channel()
time.sleep(0.2)
def master(count=50):
"""Sends out the device information twice a second."""
# using the "with" statement is highly recommended if the nRF24L01 is
# to be used for more than a BLE configuration
with nrf as ble:
ble.name = b"nRF24L01"
# include the radio's pa_level attribute in the payload
ble.show_pa_level = True
print("available bytes in next payload:",
ble.available(chunk(battery_service.buffer))
) # using chunk() gives an accurate estimate of available bytes
for i in range(count): # advertise data this many times
if ble.available(chunk(battery_service.buffer)) >= 0:
_prompt(count, i) # something to show that it isn't frozen
# broadcast the device name, MAC address, &
# battery charge info; 0x16 means service data
ble.advertise(battery_service.buffer, data_type=0x16)
# channel hoping is recommended per BLE specs
ble.hop_channel()
time.sleep(0.5) # wait till next broadcast