First init.

libraries/Adafruit_seesaw_Library/Adafruit_Crickit.cpp

@@ -0,0 +1,65 @@
+#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);
+  }
+}