Adafruit_Crickit.cpp

#include "Adafruit_Crickit.h"

// the pwm pins
#define CRICKIT_NUM_PWM 12
static const uint8_t CRICKIT_pwms[CRICKIT_NUM_PWM] = {
    CRICKIT_SERVO4,   CRICKIT_SERVO3,   CRICKIT_SERVO2,   CRICKIT_SERVO1,
    CRICKIT_MOTOR_B1, CRICKIT_MOTOR_B2, CRICKIT_MOTOR_A1, CRICKIT_MOTOR_A2,
    CRICKIT_DRIVE4,   CRICKIT_DRIVE3,   CRICKIT_DRIVE2,   CRICKIT_DRIVE1};

// the adc pin
#define CRICKIT_NUM_ADC 8
static const uint8_t CRICKIT_adc[CRICKIT_NUM_ADC] = {
    CRICKIT_SIGNAL1, CRICKIT_SIGNAL2, CRICKIT_SIGNAL3, CRICKIT_SIGNAL4,
    CRICKIT_SIGNAL5, CRICKIT_SIGNAL6, CRICKIT_SIGNAL7, CRICKIT_SIGNAL8};

void Adafruit_Crickit::analogWrite(uint8_t pin, uint16_t value, uint8_t width) {
  (void)width;

  int8_t p = -1;
  for (int i = 0; i < CRICKIT_NUM_PWM; i++) {
    if (CRICKIT_pwms[i] == pin) {
      p = i;
      break;
    }
  }

  if (p > -1) {
    uint8_t cmd[] = {(uint8_t)p, (uint8_t)(value >> 8), (uint8_t)value};
    this->write(SEESAW_TIMER_BASE, SEESAW_TIMER_PWM, cmd, 3);
  }
}

uint16_t Adafruit_Crickit::analogRead(uint8_t pin) {
  uint8_t buf[2];
  int8_t p = -1;
  for (int i = 0; i < CRICKIT_NUM_ADC; i++) {
    if (CRICKIT_adc[i] == pin) {
      p = i;
      break;
    }
  }

  if (p > -1) {
    this->read(SEESAW_ADC_BASE, SEESAW_ADC_CHANNEL_OFFSET + p, buf, 2, 500);
    uint16_t ret = ((uint16_t)buf[0] << 8) | buf[1];
    delay(1);
    return ret;
  } else
    return 0;
}

void Adafruit_Crickit::setPWMFreq(uint8_t pin, uint16_t freq) {
  int8_t p = -1;
  for (int i = 0; i < CRICKIT_NUM_PWM; i++) {
    if (CRICKIT_pwms[i] == pin) {
      p = i;
      break;
    }
  }

  if (p > -1) {
    uint8_t cmd[] = {(uint8_t)p, (uint8_t)(freq >> 8), (uint8_t)freq};
    this->write(SEESAW_TIMER_BASE, SEESAW_TIMER_FREQ, cmd, 3);
  }
}