Hello all,
I am trying to make a robot controller using two analog joysticks, two arduinos, and two xbee wireless modules. I previously got some help from here: Serial communication-2 analog inputs to 2 PWM outputs - Microcontrollers - Arduino Forum
I have everything working using two of the joysticks(potentiometers) and I can make the robot go forwards and backwards with the joystick controllers.
My issue is I now want to add a third input using the switch attatched to one of the analog sticks. I have the switch hooked up to pin 4 as a digital input and I want it to blink an LED (when pressed) off port 7 of the other arduino. I a have added to my code what I thought would work, but it does not work. With this code, nothing happens to the LED when I click the switch. The LED seems to turn on when I move only one of the joysticks forward. Please help me figure out what I have wrong as I would love to get this LED to blink when the button is pressed down.
Transmitter Side Code:
/* Joystick Controller for Multi Purpose Cart - Transmitter Side
Weston Hayle */
//Add Easy Transfer Library to sketch
#include <EasyTransfer.h>
EasyTransfer ET;//Name of Easy Transfer = ET
const int potpin1 = A0;//Recognizes port A0 as potentiometer 1 input
const int potpin2 = A1;//Recognizes port A1 as potentiometer 2 input
const int buttonPin = 4;
int ClickState = 0; //variable for click status of right joystick
//Declare more vzriables
struct SEND_DATA_STRUCTURE{
int Pot1val;
int Pot2val;
int Click;
};
SEND_DATA_STRUCTURE txdata;
void setup(){
Serial.begin(9600);//Initialize Serial Communication @ 9600 bps (Same as Xbee baud rate)
ET.begin(details(txdata), &Serial);//Easy Transfer begins reading the data from Tx (Serial)
pinMode(buttonPin, INPUT);//Initializes pin 4 as input (button)
}
void loop(){
int val1 = analogRead(potpin1); // Reads value of pot 1 value and stores in val1
int val2 = analogRead(potpin2);// Reads value of pot 2 value and stores in val1
ClickState = digitalRead(buttonPin);//Reads State of Joystick Switch
//Map val1 and val2 from 0 to 255 (PWM values)
val1 = map(val1, 0, 1023, 0, 255);
val2 = map(val2, 0, 1023, 0, 255);
//Transmit the data
txdata.Pot1val = val1;
txdata.Pot2val = val2;
txdata.Click = ClickState;
ET.sendData();//Sends the three values using Easy Transfer Library
}
Receiver Side Code:
/* Joystick Controller for Multi Purpose Cart - Receiver Side Arduino Mega
Weston Hayle */
//Add Easy Transfer Library to sketch
#include <EasyTransfer.h>
EasyTransfer ET;//Name of Easy Transfer = ET
//Declare variables (Must be the same variabes as SEND_DATA_STRUCTURE of Transmitter Code)
struct RECEIVE_DATA_STRUCTURE{
int Pot1val;
int Pot2val;
int Click;
};
RECEIVE_DATA_STRUCTURE txdata;
void setup(){
Serial.begin(9600);//Initialize Serial Communication @ 9600 bps (Same as Xbee baud rate)
// Start reading using Easy Transfer Library
ET.begin(details(txdata), &Serial);
//Change frequency of Pins 9 and 10 to 31000 Hz (Inaudible)
int myEraser = 7; // this is 111 in binary and is used as an eraser
TCCR2B &= ~myEraser; // this operation (AND plus NOT), set the three bits in TCCR2B to 0
int myPrescaler = 1; // this could be a number in [1 , 6]. In this case, 3 corresponds in binary to 011.
TCCR2B |= myPrescaler; //this operation (OR), replaces the last three bits in TCCR2B with our new value 011
pinMode (9, OUTPUT); // Sets pin 9 as PWM output
pinMode (10, OUTPUT); // Sets pin 10 as PWM output
pinMode (7, OUTPUT);// Sets pin 7 as output for LED
}
//Print/Write Received Values
void loop(){
if(ET.receiveData()){
analogWrite(9,txdata.Pot1val);
analogWrite(10,txdata.Pot2val);
digitalWrite(7,txdata.Click);
}
}
Note I am using easy transfer library:
