139 lines
2.9 KiB
Python
139 lines
2.9 KiB
Python
"""Test the IO Board."""
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import mraa
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import time
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relay = []
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for x in range(0, 6):
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pin = mraa.Gpio(x)
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pin.dir(mraa.DIR_OUT)
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relay.append(pin)
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pin.write(0)
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pinRedLED = mraa.Gpio(8)
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pinRedLED.dir(mraa.DIR_OUT)
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pinGreenLED = mraa.Gpio(9)
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pinGreenLED.dir(mraa.DIR_OUT)
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input_mux = [
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[],
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[0, 0, 0], # Input 1
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[1, 0, 0], # Input 2
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[0, 1, 0], # Input 3
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[1, 1, 0], # Input 4
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[0, 0, 1], # Input 5
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[1, 0, 1], # Input 6
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[0, 1, 1], # Input 7
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[1, 1, 1], # Input 8
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]
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pinA0 = mraa.Gpio(14)
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pinA0.dir(mraa.DIR_OUT)
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pinA1 = mraa.Gpio(15)
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pinA1.dir(mraa.DIR_OUT)
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pinA2 = mraa.Gpio(16)
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pinA2.dir(mraa.DIR_OUT)
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pinA3 = mraa.Gpio(17)
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pinA3.dir(mraa.DIR_IN)
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spi_bus = mraa.Spi(5)
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print(spi_bus.lsbmode(False))
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def red_LED(out):
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"""Set the Red LED to the specified output."""
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if out:
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pinRedLED.write(1)
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else:
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pinRedLED.write(0)
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def green_LED(out):
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"""Set the Green LED to the specified output."""
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if out:
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pinGreenLED.write(1)
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else:
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pinGreenLED.write(0)
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def relay_loop():
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"""Loop through all relays."""
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loops = 0
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while loops < 10:
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for p in relay:
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p.write(1)
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time.sleep(1)
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p.write(0)
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loops += 1
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def read_dig_in(io_port):
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"""Read IO Board digital input."""
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if io_port == 0 or io_port > 8:
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print("CANNOT READ A PORT THAT DOES NOT EXIST: {}".format(io_port))
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return False
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pin_values = input_mux[io_port]
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pinA0.write(pin_values[0])
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pinA1.write(pin_values[1])
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pinA2.write(pin_values[2])
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return pinA3.read() == 0
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def dig_in_loop():
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"""Read all digital inputs."""
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for i in range(1, 9):
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print("DIGIN {} = {}".format(i, read_dig_in(i)))
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def led_flash(loops):
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"""Flash the LED's from red to green."""
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led_loops = 0
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while led_loops < loops:
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red_LED(True)
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green_LED(False)
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time.sleep(0.25)
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red_LED(False)
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green_LED(True)
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time.sleep(0.25)
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led_loops += 1
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red_LED(False)
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green_LED(False)
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def read_analog_in(io_port):
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"""Read IO Board digital input."""
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global spi_bus
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if io_port < 1 or io_port > 4:
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print("CANNOT READ A PORT THAT DOES NOT EXIST: {}".format(io_port))
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return False
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pin_values = input_mux[io_port]
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pinA0.write(pin_values[0])
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pinA1.write(pin_values[1])
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pinA2.write(pin_values[2])
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ok_status = False
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while ok_status is False:
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pinA0.write(pin_values[0])
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pinA1.write(pin_values[1])
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pinA2.write(pin_values[2])
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x = spi_bus.write(bytearray([0, 0, 0]))
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print((x[0], x[1], x[2]))
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c_bin = format(x[2], '#010b')[2:]
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if c_bin[-3:] == "101":
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ok_status = True
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print("OK: {}, Status: {}".format(ok_status, c_bin))
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print(x[0] * 256 + x[1])
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time.sleep(10)
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if __name__ == '__main__':
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# led_flash(10)
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print("Analog {}".format(1))
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read_analog_in(1)
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