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106 lines
2.8 KiB
Python
106 lines
2.8 KiB
Python
# Procedures related to the IR transmitters only
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# 2019 furrtek - furrtek.org
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# See LICENSE
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import serial
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def try_serialport(comport):
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try:
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ser = serial.Serial(comport, 57600, timeout = 1) # 1s timeout for read
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ser.write("?".encode())
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ser.flush()
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test = ser.read_until("ESLBlaster")
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ser.close()
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if (len(test) >= 10):
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print("Found ESL Blaster on " + comport)
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return True
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else:
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print("Timeout on " + comport)
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return False
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except serial.SerialException:
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#print("SerialException on " + comport) # Debug
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return False
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def search_esl_blaster():
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found = False
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for n in range(1, 10):
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comport = "COM" + str(n)
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if try_serialport(comport):
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found = True
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break
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if found == False:
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for n in range(1, 10):
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comport = "/dev/ttyACM" + str(n)
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if try_serialport(comport):
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found = True
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break
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if found == False:
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print("Could not find ESL Blaster.")
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return "0"
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else:
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return comport
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def transmit_serial(frames, port):
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ser = serial.Serial(port, 57600, timeout = 10) # 10s timeout for read
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ser.reset_input_buffer()
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frame_count = len(frames)
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i = 1
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for fr in frames:
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data_size = len(fr) - 2
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repeats = fr[-2] + (fr[-1] * 256)
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if repeats > 255: # Cap to one byte for the simple serial transmitter
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repeats = 255
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print("Transmitting frame %u/%u, length %u, repeated %u times." % (i, frame_count, data_size, repeats))
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ba = bytearray()
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ba.append(data_size)
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ba.append(repeats)
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for b in range(0, data_size):
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ba.append(fr[b])
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ser.write(ba)
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ser.flush()
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ser.read_until('A')
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i += 1
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ser.close()
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def transmit_esl_blaster(frames, port):
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ser = serial.Serial(port, 57600, timeout = 10) # 10s timeout for read
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ser.reset_input_buffer()
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frame_count = len(frames)
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i = 1
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# DEBUG
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#f = open("out_bin.txt", "w")
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for fr in frames:
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data_size = len(fr) - 2
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repeats = fr[-2] + (fr[-1] * 256)
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print("Transmitting frame %u/%u, length %u, repeated %u times." % (i, frame_count, data_size, repeats))
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ba = bytearray()
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ba.append(76) # L:Load
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ba.append(data_size)
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ba.append(30) # 30*50 = 1500 timer ticks between repeats
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ba.append(repeats & 255)
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ba.append((repeats // 256) & 255)
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for b in range(0, data_size):
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ba.append(fr[b])
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ba.append(84) # T:Transmit
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# DEBUG
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#for b in ba:
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# f.write(format(b, '02X') + " ")
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#f.write("\n")
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ser.write(ba)
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ser.flush()
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ser.read_until(b'K') # Wait for transmit done
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i += 1
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ser.close()
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