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5. Note: If under any circumstances, this software locks up, use the 'RESET' key to recover.
6.
Press key 't' to perform an LED test. The Sensor1-8 LEDs and screen start counting in Hex.
7. Press key 'r' to read the four sensors data, this will be displayed on the screen as shown
below:
This shows the binary output of each sensor, with sensor 1 first and sensor 4 last. If the
sensor input is high then the correlating sensor LED is lit on the LED array Sense 1:8, this
shows the sensor data read from SPI. LEDs S01 to S04 show the state of the devices hardwire
sense outputs. The display above shows sensor 1 in the high state and sensors 2-4 in low
state. To create this set up on the board just connect the 28V1 to 28V and GND1 to 0V, this
produces an Open (high) in the GND/Open sensor 1, the other sensors will default to '0'.
8. To continually monitor the four outputs then use the key 'z', this will show a screen similar to
below:
Holt Integrated Circuits
8
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