In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

Joe,
  Okay, a couple suggestions...

  You will need to devise a way to measure the 15V input. You MIGHT get away with a voltage divider, but you will probably need an analog to digital converter. You could try running the 15V input thru at 100K resistor then to the pin and a 10K resistor to ground. That would make 15V = 1.36 volts (pin detects at about 1.4v).

  There is no way you have have microsecond pulses when operating the SX at 32KHz. Even at 4MHz it will be tricky. I would go with 20MHz.  

  You also need to define the actual pin location on the SX chip for example:

    Pin1 VAR RC.0
    Pin2 VAR RC.1
    Pin3 VAR RC.2
    Pin4 VAR RC.3

  I would keep the outputs on one port and the input on a different port. That will make the code easier because you can change all four outputs with one command.

  Did you want to write the code in SX/B ? Or in assembly ?

Bean.

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