Hey guys, pretty new here.. I'll give you some context and my question.
I am trying to control an rc car with 2 xbees and arduino unos.
I have this code, but I cannot figure out what would be the problem..
I have included a picture with the error..here's the code; for the life of me I cannot figure it out.
int forward = 30; // Pin 12 - Forward
int reverse = 40; // Pin 11 - Reverse
int left = 51; // Pin 10 - Left
int right = 39; // Pin 9 - Right
char val; // Variable to receive data from the serial port
void setup() {
// initialize the digital pins as output
pinMode(forward, OUTPUT);
pinMode(reverse, OUTPUT);
pinMode(left, OUTPUT);
pinMode(right, OUTPUT); Serial.begin(9600); // Start serial communication at 9600bps
}
// Fordward action
void go_forward() {
digitalWrite(forward, HIGH);
digitalWrite(reverse, LOW);
}
// Reverse action
void go_reverse() {
digitalWrite(reverse, HIGH);
digitalWrite(forward, LOW);
}
// Left action
void go_left() {
digitalWrite(left, HIGH);
digitalWrite(right, LOW);
}
// Right action
void go_right() {
digitalWrite(right, HIGH);
digitalWrite(left, LOW);
}
// Stop turn action
void stop_turn() {
digitalWrite(right, LOW);
digitalWrite(left, LOW);
}
// Stop car
void stop_car() {
digitalWrite(forward, LOW);
digitalWrite(reverse, LOW);
digitalWrite(right, LOW);
digitalWrite(left, LOW);
}
// Read serial port and perform command
void performCommand() {
if (Serial.available()) {
val = Serial.read();
}
if (val == 'w') { // Forward go_forward(); } else if (val == 's') { // Backward go_reverse(); } else if (val == 'd') { // Right go_right(); } else if (val == 'a') { // Left go_left(); } else if (val == 'l') { // Stop Turn stop_turn(); } else if (val == 'k') { // Stop stop_car();
}
}
void loop() {
performCommand();
}
I appreciate it guys, thank you.
E
