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self.put_register("syncword_1", syncword[2])
self.put_register("syncword_2", syncword[1])
self.put_register("syncword_3", syncword[0])
elif len(syncword) > 4:
raise ValueError("SyncWord length must be less than 5")
return None
def transmit(self, message, channel = None):
if channel is None:
state = self.get_register_bits('radio_state')
channel = state['channel']
# Initialize the transmitter
self.put_register_bits('radio_state', {
'tx_enabled': 0,
'rx_enabled': 0,
'channel': 0
})
self.put_register_bits('fifo_state', {
'clear_read': 1,
'clear_write': 1
})
# Format message to send to fifo
## XXX: TODO: Length encoding is optional, should check register
message = [self.__register_number('fifo'), len(message)] + message
log_message = [] + message
# Transfer the message
result = self.__spi.xfer(message, self.__spi.max_speed_hz, 10)
self.__debug("Writing: {} = {}".format(log_message, result))
# Tell the radio to transmit the FIFO buffer to the specified channel
self.put_register_bits('radio_state', {
'tx_enabled': 1,
'rx_enabled': 0,
'channel': channel
})
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self.put_register("syncword_1", syncword[2])
self.put_register("syncword_2", syncword[1])
self.put_register("syncword_3", syncword[0])
elif len(syncword) > 4:
raise ValueError("SyncWord length must be less than 5")
return None
def fill_fifo(self, message, include_length = True):
new_message = [self.__register_number('fifo')]
if include_length:
new_message = new_message + [len(message)]
new_message = new_message + message
log_message = [] + new_message
# Transfer the message
result = self.__spi.xfer(new_message, self.__spi.max_speed_hz, 10)
self.__debug("Writing: {} = {}".format(log_message, result))
return new_message
def transmit(self, message, channel = None):
if channel is None:
state = self.get_register_bits('radio_state')
channel = state['channel']
# Initialize the transmitter
self.put_register_bits('radio_state', {
'tx_enabled': 0,
'rx_enabled': 0,
'channel': 0
})
self.put_register_bits('fifo_state', {
'clear_read': 1,
'clear_write': 1
})
# Format message to send to fifo
self.fill_fifo(message, True)
# Tell the radio to transmit the FIFO buffer to the specified channel
self.put_register_bits('radio_state', {
'tx_enabled': 1,
'rx_enabled': 0,
'channel': channel
})
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