hi all,
Have been looking for and finding some samples of RC receiver reading sketches. I created this based on what I found:
//Reads PPM signals from 6 channels of an RC reciever, translates the values to
//PWM and prints the values to serial port.
//Works with Spectrum DX7 (haven't tested anything else)
//Create variables for 6 channels
int RXCH[6];
volatile int RXSG[6];
int RXOK[6];
int PWMSG[6];
void setup() {
//Start communication to serial port
Serial.begin(115200);
//Assign PPM input pins. The receiver output pins are conected as below to non-PWM Digital connectors:
RXCH[1] = 4; //Throttle
RXCH[2] = 6; //Aile / Yaw
RXCH[3] = 5; //Elev. / Pitch
RXCH[4] = 2; //Rudd. / Roll
RXCH[5] = 7; //Gear
RXCH[6] = 8; //Aux / Flt Mode
for (int i = 1; i < 7; i++){
pinMode(RXCH[i], INPUT);
}
}
void loop() {
// Read RX values
for (int i = 1; i < 7; i++){ //for each of the 6 channels:
RXSG[i] = pulseIn(RXCH[i], HIGH, 20000); //read the receiver signal
if (RXSG[i] == 0) {RXSG[i] = RXOK[i];} else {RXOK[i] = RXSG[i];} //if the signal is good then use it, else use the previous signal
PWMSG[i] = map(RXSG[i], 1000, 2000, 0, 511); //substitute the high values to a value between 0 and 511
constrain (PWMSG[i], 0, 511); //make sure that the value stays within the disired boundries
// Print RX values
Serial.print(" || Ch: ");
Serial.print(i);
Serial.print(" / PWMSG: ");
Serial.print(PWMSG[i]);
//Serial.print(" / RXSG: ");
//Serial.print(RXSG[i]);
delay(5);
}
Serial.println();
}
I thought that it might be usefull to someone hence this post. I have it running on a 2009.
Hope you'll have fun with t!
Hi eswink,
I like your code - have you yet considered to read the sum signal instead of every single channel? You would have to use only one port instead of 6 - Im trying to get it working, but Im experiencing some problems as I already posted here: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1290705249/
Does it really work?
Arrays are declared with their size but acessed using number between 0 and size-1, so your RXCH[6] is in fact out of bounds, you should use 0 to 5 and not 1 to 6.
//Reads PPM signals from 6 channels of a Spectrum DX7 RC reciever, translates the values to
//PWM and prints the values to serial port.
//Works with Spectrum DX7 (haven't tested anything else but should work with any PPM output
//Create variables for 6 channels
int RXCH[6];
volatile int RXSG[6];
int RXOK[6];
int PWMSG[6];
void setup() {
//Start communication to serial port
Serial.begin(115200);
//Assign PPM input pins. The receiver output pins are conected as below to non-PWM Digital connectors:
RXCH[0] = 4; //Throttle
RXCH[1] = 6; //Aile / Yaw
RXCH[2] = 5; //Elev. / Pitch
RXCH[3] = 2; //Rudd. / Roll
RXCH[4] = 7; //Gear
RXCH[5] = 8; //Aux / Flt Mode
for (int i = 0; i < 6; i++){
pinMode(RXCH[i], INPUT);
}
}
void loop() {
// Read RX values
for (int i = 0; i < 6; i++){ //for each of the 6 channels:
RXSG[i] = pulseIn(RXCH[i], HIGH, 20000); //read the receiver signal
if (RXSG[i] == 0) {RXSG[i] = RXOK[i];} else {RXOK[i] = RXSG[i];} //if the signal is good then use it, else use the previous signal
PWMSG[i] = map(RXSG[i], 1000, 2000, 0, 511); //substitute the high values to a value between 0 and 511
constrain (PWMSG[i], 0, 511); //make sure that the value stays within the disired boundries
// Print RX values
Serial.print(" || Ch: ");
Serial.print(i+1);
Serial.print(" / PWMSG: ");
Serial.print(PWMSG[i]);
//Serial.print(" / RXSG: ");
//Serial.print(RXSG[i]);
delay(10);
}
Serial.println();
}
