digipot-class

C++ implementation

// used for MicroChip Technology MCP413X/415X/423X/425X SPI controlled digitial potentiometers and rheostats
// Reference for Wiring: http://www.learningaboutelectronics.com/Articles/MCP4131-digital-potentiometer-circuit.php

node {

     meta {
        using Type = Number;
    } 
    
    //auto MOhm = 10;
   // auto bits = 8;
   // auto CS = 10;
   // auto maxStep = 128;
    
    void evaluate(Context ctx) {

    if (isSettingUp()){
             static_assert(isValidDigitalPort(constant_input_CS), "must be a valid digital port");
             ::pinMode(constant_input_CS, OUTPUT); // set pinmode output for Chip Select;
             Type  digipot = getValue<input_CS>;
                    digipot.Mohm = getValue<input_MOhm>(ctx);
                    digipot.maxStep = getValue<input_bits8> ? 255 : 128;
             
    }

        emitValue<output_POT>(ctx, digipot);

    }
}