simple unoptimized arduino code to read data from an rc receiver and send via serial

arduino-rc-receiver.ino

#define CHANNEL_0 14
#define CHANNEL_1 15
#define CHANNEL_2 16

uint16_t ch0;
uint16_t ch1;
uint16_t ch2;

void setup() {
  Serial.begin(19200);
  
  pinMode(CHANNEL_0, INPUT);
  pinMode(CHANNEL_1, INPUT);
  pinMode(CHANNEL_2, INPUT);
}

void loop() {
  ch0 = pulseIn(CHANNEL_0,HIGH, 32000);
  ch1 = pulseIn(CHANNEL_1,HIGH, 32000);
  ch2 = pulseIn(CHANNEL_2,HIGH, 32000);
  Serial.write(0xca);
  Serial.write(0xfe);
  writeChannel(ch0);
  writeChannel(ch1);
  writeChannel(ch2);
}

void writeChannel(uint16_t ch) {
  Serial.write((ch >> 8) & 0xff);
  Serial.write((ch) & 0xff);
}