Sketch to test PWM on the 12volt I/O (SOURCES 12volt)

12VIO_test.INO

#define MASTER_CLOCK 84000000
#include "SamNonDuePin.h"

uint32_t clock_a = 42000000; // Sampling frequency in Hz

int brightness = 0;    // how bright the LED is
int fadeAmount = 5;    // how many points to fade the LED by

const int IOENABLE = 6;      // the number of the 12Vio_EN pin

void setup()
{
  pinMode(IOENABLE, OUTPUT);
  digitalWrite(IOENABLE, HIGH);

//   SetPin(35); // PWMH0  - GPIO 1A (Channel 0)
//   pinMode(34, OUTPUT);
//   digitalWrite(34, LOW);

//    SetPin(37); // PWMH1  - GPIO 2A (Channel 1)
//    pinMode(36, OUTPUT);
//    digitalWrite(36, LOW);

  SetPin(39); // PWMH2  - GPIO 3A (Channel 2) 
  pinMode(38, OUTPUT);
  digitalWrite(38, LOW);

//   SetPin(41); // PWMH3  - GPIO 4A (Channel 3)
//   pinMode(40, OUTPUT);
//   digitalWrite(40, LOW);

//   PIO_Configure(nonDuePinDescription[X8].pPort, PIO_PERIPH_B, nonDuePinDescription[X8].ulPin,nonDuePinDescription[X8].ulPinConfiguration); // - GPIO 5A (Channel 4)
//   pinMode(9, OUTPUT);
//   digitalWrite(9, LOW);

//   SetPin(44); // PWMH5  - GPIO 6A (Channel 5)
//   pinMode(8, OUTPUT);
//   digitalWrite(8, LOW);

  pmc_enable_periph_clk(PWM_INTERFACE_ID); // Turn on PWM clock
  PWMC_ConfigureClocks(clock_a, 0, MASTER_CLOCK); // clock_b = 0

//    PWMC_ConfigureChannelExt(PWM,
//                             0, // Channel: 0
//                             PWM_CMR_CPRE_CLKA, // Prescaler: use CLOCK_A
//                             PWM_CMR_CALG, // Alignment: period is center aligned
//                             0, // Polarity: output waveform starts at a low level
//                             PWM_CMR_CES, // Counter event: occurs at the end and middle of the period
//                             PWM_CMR_DTE, // Dead time generator is enabled
//                             0, // Dead time PWMH output is not inverted
//                             0);  // Dead time PWML output is not inverted
//    PWMC_SetPeriod(PWM, 0, 600); // Channel: 0, Period: 1/(1200/42 Mhz) = ~35 kHz
//    PWMC_SetDutyCycle(PWM, 0, 100); // Channel: 0, Duty cycle: xx %
//    PWMC_SetDeadTime(PWM, 0, 42, 42); // Channel: 0, Rising and falling edge dead time: 42/42 Mhz = 1 us
//    PWMC_EnableChannel(PWM, 0); // Channel: 0


//    PWMC_ConfigureChannelExt(PWM,
//                             1, // Channel: 1
//                             PWM_CMR_CPRE_CLKA, // Prescaler: use CLOCK_A
//                             PWM_CMR_CALG, // Alignment: period is center aligned
//                             0, // Polarity: output waveform starts at a low level
//                             PWM_CMR_CES, // Counter event: occurs at the end and middle of the period
//                             PWM_CMR_DTE, // Dead time generator is enabled
//                             0, // Dead time PWMH output is not inverted
//                             0);  // Dead time PWML output is not inverted
//    PWMC_SetPeriod(PWM, 1, 600); // Channel: 1, Period: 1/(1200/42 Mhz) = ~35 kHz
//    PWMC_SetDutyCycle(PWM, 1, 200); // Channel: 1, Duty cycle: 33 %
//    PWMC_SetDeadTime(PWM, 1, 42, 42); // Channel: 1, Rising and falling edge dead time: 42/42 Mhz = 1 us
//    PWMC_EnableChannel(PWM, 1); // Channel: 1
//
  PWMC_ConfigureChannelExt(PWM,
                           2, // Channel: 2
                           PWM_CMR_CPRE_CLKA, // Prescaler: use CLOCK_A
                           PWM_CMR_CALG, // Alignment: period is center aligned
                           0, // Polarity: output waveform starts at a low level
                           PWM_CMR_CES, // Counter event: occurs at the end and middle of the period
                           PWM_CMR_DTE, // Dead time generator is enabled
                           0, // Dead time PWMH output is not inverted
                           0);  // Dead time PWML output is not inverted
  PWMC_SetPeriod(PWM, 2, 600); // Channel: 2, Period: 1/(1200/42 Mhz) = ~35 kHz
  PWMC_SetDutyCycle(PWM, 2, 200); // Channel: 2, Duty cycle: 33 %
  PWMC_SetDeadTime(PWM, 2, 42, 42); // Channel: 2, Rising and falling edge dead time: 42/42 Mhz = 1 us
  PWMC_EnableChannel(PWM, 2); // Channel: 2
  //
//    PWMC_ConfigureChannelExt(PWM,
//                             3, // Channel: 3
//                             PWM_CMR_CPRE_CLKA, // Prescaler: use CLOCK_A
//                             PWM_CMR_CALG, // Alignment: period is center aligned
//                             0, // Polarity: output waveform starts at a low level
//                             PWM_CMR_CES, // Counter event: occurs at the end and middle of the period
//                             PWM_CMR_DTE, // Dead time generator is enabled
//                             0, // Dead time PWMH output is not inverted
//                             0);  // Dead time PWML output is not inverted
//    PWMC_SetPeriod(PWM, 3, 600); // Channel: 3, Period: 1/(1200/42 Mhz) = ~35 kHz
//    PWMC_SetDutyCycle(PWM, 3, 200); // Channel: 3, Duty cycle: 33 %
//    PWMC_SetDeadTime(PWM, 3, 42, 42); // Channel: 3, Rising and falling edge dead time: 42/42 Mhz = 1 us
//    PWMC_EnableChannel(PWM, 3); // Channel: 3

  //
  
//    PWMC_ConfigureChannelExt(PWM,
//                             4, // Channel: 4
//                             PWM_CMR_CPRE_CLKA, // Prescaler: use CLOCK_A
//                             PWM_CMR_CALG, // Alignment: period is center aligned
//                             0, // Polarity: output waveform starts at a low level
//                             PWM_CMR_CES, // Counter event: occurs at the end and middle of the period
//                             PWM_CMR_DTE, // Dead time generator is enabled
//                             0, // Dead time PWMH output is not inverted
//                             0);  // Dead time PWML output is not inverted
//    PWMC_SetPeriod(PWM, 4, 600); // Channel: 4, Period: 1/(1200/42 Mhz) = ~35 kHz
//    PWMC_SetDutyCycle(PWM, 4, 200); // Channel: 4, Duty cycle: 33 %
//    PWMC_SetDeadTime(PWM, 4, 42, 42); // Channel: 4, Rising and falling edge dead time: 42/42 Mhz = 1 us
//    PWMC_EnableChannel(PWM, 4); // Channel: 4

//    PWMC_ConfigureChannelExt(PWM,
//                             5, // Channel: 5
//                             PWM_CMR_CPRE_CLKA, // Prescaler: use CLOCK_A
//                             PWM_CMR_CALG, // Alignment: period is center aligned
//                             0, // Polarity: output waveform starts at a low level
//                             PWM_CMR_CES, // Counter event: occurs at the end and middle of the period
//                             PWM_CMR_DTE, // Dead time generator is enabled
//                             0, // Dead time PWMH output is not inverted
//                             0);  // Dead time PWML output is not inverted
//    PWMC_SetPeriod(PWM, 5, 600); // Channel: 5, Period: 1/(1200/42 Mhz) = ~35 kHz
//    PWMC_SetDutyCycle(PWM, 5, 200); // Channel: 5, Duty cycle: 33 %
//    PWMC_SetDeadTime(PWM, 5, 42, 42); // Channel: 5, Rising and falling edge dead time: 42/42 Mhz = 1 us
//    PWMC_EnableChannel(PWM, 5); // Channel: 5

}

void loop()
{
  PWMC_SetDutyCycle(PWM, 2, brightness); // Channel: 2 (GPIO 3A)
  
  // change the brightness for next time through the loop:
  brightness = brightness + fadeAmount;

  // reverse the direction of the fading at the ends of the fade:
  if (brightness == 0 || brightness == 600) {
    fadeAmount = -fadeAmount ;
  }
  // wait for 30 milliseconds to see the dimming effect
  delay(30);
}

void SetPin(uint8_t pin)
{
  PIO_Configure(g_APinDescription[pin].pPort, // Port
                PIO_PERIPH_B, // Peripheral
                g_APinDescription[pin].ulPin,
                g_APinDescription[pin].ulPinConfiguration);

}