#include <wiringpi.h>
#include <wiringPiSPI.h>
#include <softPwm.h>
#include <bool.h>

//declare global booleans and variables.
#define button = true;

void button_thread() {
    while(){
    //Detect buttons change booleans and values.
    //Update screen.
    }
}

int main(int argc, char *argv[]) {
    printf("Initializing setup...\n");
    // start bridge SPI
    // set SPI channel to 0 and speed to 16MHz
    if (wiringPiSPISetup(0, 16000000) < 0) {
        fprintf(stderr, "Could not setup WiringPi SPI.\n", sterror (errno));
        exit(1);
    }
    // start wiringpi setup
    if (wiringPiSetup() < 0) {
        fprintf(stderr, "Could not setup WiringPi.\n", sterror (errno));
        exit(1);
    }

    printf("Starting... \n");

    pinMode(13, INPUT); //MISO will use pin 13
    pinMode(1, OUTPUT); //GPIO1 will be used for PWM (analog output)

    uint8_t mosi[10] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
    uint8_t miso[10] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
    // define I/O
    // define lcd
    // start thread buttons and switches.

    while(1) {
        //receive data
        wiringPiSPIDataRW(0, miso, 10); //SPI transfer to transfer 10 bits to the miso list.

        //effect function
        //if (button) {
        //    miso = distortion();
        //}
        printf("Data received: " + miso + "\n");
        //output
        int data = miso[2] + ((miso[1] & 0x0F) << 8); //MISO value represented in percentage for PWM
        //unsure about this equation but will know more about the input we receive when we do some testing.

        // softPwmWrite(1, data);
        miso = mosi; //reset miso to be all 0's again.
    }
    return 0;
}

uint8_t distortion() {
    //individual functions for each effect for clean code
}