#include "mbed.h"
#include "main.h"
#include "x_nucleo_plc01a1_class.h"

int main(){
    setup(spi, X_NUCLEO_PLC01A1_PIN_SPI_BITS, 0, 1E6);  //set the SPI function mode: 16-bit / mode 0 / 486Hz ???
                                                        //I can't find what mode 0 does, or why we're at 486 Hz....
    tickevent1.attach(*dacticker, 5);
    tickevent2.attach(*ledticker, 0.1);                 //tickers can run parallel, while the program code moves on.
    tickevent3.attach(*relayticker, 3);
}

void dacticker(){
    out.write(temp);
    temp += 0.03;
    if(temp > 0.3f){    //apparantly the 'f' part is important. Voltage only goes 0.9V if 0.30 is used instead of 0.3f
        temp = 0.00;
    }
}

void ledticker(){
    LD2 = !LD2;
}

void relayticker(){
    DigitalInputArrayHandler(plc);
    SsrelayHandler(plc, relay_input); //Don't forget to set the correct mode!
}

/**********************************************************
****************** PLC BOARD FUNCTIONS ********************
**********************************************************/

void DigitalInputArrayHandler(X_NUCLEO_PLC01A1 &plc)        // Receive input data from Digital Input Termination Device
{
  plc.plcInput().DigInpArray_GetInput(inputArray);
}

void SsrelayHandler(X_NUCLEO_PLC01A1 &plc, uint8_t VNI_out) //Select output function and set outputs
{
  outputArray[1] = plc.setOutput(0xFF);                     //Activate all PLC outputs simultaneously.
  plc.outputParityBits(outputArray);                        /* Parity bits calculation */
  plc.plcOutput().Ssrelay_SetOutput(outputArray);           /* Send output information to solid state relay */
}

void setup(SPI &spi, int bits, int mode, int frequency_hz) //0x1E6 = 486 Hz?
{
    /* Set given configuration. */
    spi.format(bits, mode);
    spi.frequency(frequency_hz);
}