CP and Arduino Prop-Maker Feather examples

Adding CircuitPython and Arduino examples for the RP2040 Prop-Maker Feather

Author: BlitzCityDIY

RP2040_Prop-Maker_Feather_Examples/Arduino_Prop-Maker_Feather_Example/.feather_rp2040.test.only

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+#include <Adafruit_NeoPixel.h>
+#include <Adafruit_LIS3DH.h>
+#include <Adafruit_Sensor.h>
+#include <107-Arduino-Servo-RP2040.h>
+
+Adafruit_NeoPixel strip(60, PIN_EXTERNAL_NEOPIXELS, NEO_GRB + NEO_KHZ800);
+
+Adafruit_LIS3DH lis = Adafruit_LIS3DH();
+
+static _107_::Servo servo_0;
+
+uint8_t x = 0;
+
+void setup() {
+  // core1 setup
+  Serial.begin(115200);
+
+  if (! lis.begin(0x18)) {   // change this to 0x19 for alternative i2c address
+    Serial.println("Couldnt start LIS3DH");
+    while (1) yield();
+  }
+
+  lis.setRange(LIS3DH_RANGE_2_G);
+
+  pinMode(PIN_EXTERNAL_POWER, OUTPUT);
+  digitalWrite(PIN_EXTERNAL_POWER, HIGH);
+
+  strip.begin();
+  strip.show();
+  strip.setBrightness(50);
+
+  pinMode(PIN_EXTERNAL_BUTTON, INPUT_PULLUP);
+
+  servo_0.attach(PIN_EXTERNAL_SERVO);
+}
+
+void loop() {
+
+  delay(10);
+  x++;
+  for(int32_t i=0; i< strip.numPixels(); i++) {
+      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + x) & 255));
+  }
+  strip.show();
+  // Print X Y & Z accelerometer data
+  if (x % 10 == 0) {
+    // every 100ms
+    sensors_event_t event;
+    lis.getEvent(&event);
+    /* Display the results (acceleration is measured in m/s^2) */
+    Serial.print("Accel X: "); Serial.print(event.acceleration.x);
+    Serial.print(" \tY: "); Serial.print(event.acceleration.y);
+    Serial.print(" \tZ: "); Serial.print(event.acceleration.z);
+    Serial.println(" m/s^2 ");
+    Serial.println(x);
+  }  
+  // external button press disable external power
+  if (! digitalRead(PIN_EXTERNAL_BUTTON)) {
+    Serial.println("External button pressed");
+    digitalWrite(PIN_EXTERNAL_POWER, LOW);
+  }
+  else {
+    digitalWrite(PIN_EXTERNAL_POWER, HIGH);
+  }
+
+  if (x < 128) {
+    // forward
+    servo_0.writeMicroseconds(map(x, 0, 127, 1000, 2000));
+  } else {  
+    // and back
+    servo_0.writeMicroseconds(map(x-128, 0, 127, 2000, 1000));
+  }
+  return;
+  
+}
+
+uint32_t Wheel(byte WheelPos) {
+  WheelPos = 255 - WheelPos;
+  if(WheelPos < 85) {
+    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
+  }
+  if(WheelPos < 170) {
+    WheelPos -= 85;
+    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
+  }
+  WheelPos -= 170;
+  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
+}
+
+// audio runs on core 2!
+
+#include <I2S.h>
+
+#include "boot.h"
+#include "hithere.h"
+
+struct {
+  const uint8_t *data;
+  uint32_t       len;
+  uint32_t       rate;
+} sound[] = {
+  hithereAudioData, sizeof(hithereAudioData), hithereSampleRate,
+  bootAudioData   , sizeof(bootAudioData)   , bootSampleRate,
+};
+#define N_SOUNDS (sizeof(sound) / sizeof(sound[0]))
+
+I2S i2s(OUTPUT);
+
+uint8_t sndIdx = 0;
+
+
+void setup1(void) {
+  i2s.setBCLK(PIN_I2S_BIT_CLOCK);
+  i2s.setDATA(PIN_I2S_DATA);
+  i2s.setBitsPerSample(16);
+}
+
+void loop1() {
+  Serial.printf("Core #2 Playing audio clip #%d\n", sndIdx);
+  play_i2s(sound[sndIdx].data, sound[sndIdx].len, sound[sndIdx].rate);
+  delay(5000);
+  if(++sndIdx >= N_SOUNDS) sndIdx = 0;
+}
+
+void play_i2s(const uint8_t *data, uint32_t len, uint32_t rate) {
+
+  // start I2S at the sample rate with 16-bits per sample
+  if (!i2s.begin(rate)) {
+    Serial.println("Failed to initialize I2S!");
+    delay(500);
+    i2s.end();
+    return;
+  }
+  
+  for(uint32_t i=0; i<len; i++) {
+    uint16_t sample = (uint16_t)data[i] * 32;
+    // write the same sample twice, once for left and once for the right channel
+    i2s.write(sample);
+    i2s.write(sample);
+  }
+  i2s.end();
+}