Severin Kaderli
8fef45b856
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Signed-off-by: Severin Kaderli <severin@kaderli.dev>
41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
// Define constants
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preamble = [1, 1, 1, 0, 0, 0, 1, 1, 1]
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// Get sensor values
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sensor_values = get_data_from_sensor()
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value_range = range_of_data(sensor_values)
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// Determine for sensor values if they are a high or low signal
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signal = []
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for value in sensor_values:
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// Compare the value with the median of the values with some threshold
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if value < median_with_threshold(value_range):
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signal += low
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else if value > median_with_threshold(value_range):
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signal += high
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else:
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// Discard value
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// Filter out single high or low signals
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signal = clean_signal(signal)
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// Only keep the first of consecutive same signals, as the transitions hold the data
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signal = compress_signal(signal)
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// Check for preamble in data
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if contains(signal, preamble):
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// Decode the received manchester encoded bitstream
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packet = signal[index(preamble)]
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// Read the first four bits of the bitstream to get the header
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header = read_bits(packet, 0, 4)
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display_header(header)
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// Read the next n bytes of the bitstream, according to the payload length, to get the payload
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payload = read_bits(packet, 4, header)
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display_payload(payload)
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// Read the next byte to get the CRC-8-AUTOSAR checksum of the payload
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checksum = read_bits(packet, 4 + header, 8)
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show_checksum_result()
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