Hi!
I have a problem with my code, specifically in the void loop (I posted the whole code at the end):
void loop() {
//Serial.println(unitState);
if (i2c){
display.print(i2cDecoder[buf[0]]);
display.display();
Serial.println(i2cDecoder[buf[0]]);
i2c=false;
}
//Mostar en pantalla
if (digitalRead(SW)==!lastStateSW){
keyValueState= true;
delay(botonPulse);
Serial.println(keyValueState);
while (keyValueState)
{
Serial.println("Enter while");
if (digitalRead(SW)==!lastStateSW)
{
keyValueState= false;
delay(botonPulse);
}
display.clearDisplay();
display.setCursor(0, 35);
display.print("Key Value:");
display.print(keyValue);
display.display();
/*Serial.print("Key Value: ");
Serial.println(keyValue);*/
}
Serial.println(keyValueState);
}
}
I have an enconder, the idea is that, when I press the button, I should enter the while loop, and it whould show me a variable in an OLed Screen, wich I can change until I press the button again, wich will take me out of the loop.
This works perfect, but just once, when I press the button for a second time, I'm not entering the while loop.
To debug I put some Serial.print to get where the problem should be and I realized the keyValueState variable changes from true to false before entering the loop for no reason. This is what I get in the terminal:
1 //First button press
Enter while
Enter while
Enter while
Enter while
Enter while
Enter while
Enter while
Enter while
0 //Second button press
1 //Third button press
0 //Change keyValueState for no reason, and skip the while loop
I wrote comments of what is going on. Does anyone know why it is just working once?
The whole code is here:
#include <Arduino.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
//OLed variables
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels4
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
//I2C comunication
float keyValue=0; //Key value we are looking to modify in the feeder
bool i2c;
int i2cRecieve1;
String i2cDecoder[] = {"Neumatic Extruder" ,"Stepper Extruder", "-1" ,"1"};
#define adress 99
int buf[200];
//Encoder variables
#define CLK 2
#define DT 3
#define SW 4
#define botonPulse 250
bool keyValueState = false;
int lastStateCLK;
int lastStateSW;
int currentStateCLK;
float power(float x, int y)
{
float mult=1.0;
if (y>0)
{
for (int i=0 ; i < y ; i++ )
{
mult=mult*x;
}
}
else
{
for (int i=0 ; i < abs(y) ; i++ )
{
mult=mult/x;
Serial.println(mult);
}
return mult;
}
return mult;
}
void getKeyValue()
{
if (i2cDecoder[buf[0]]=="Neumatic Extruder")
{
keyValue= power(10,(buf[1]*i2cDecoder[buf[2]].toInt()))+255* buf[3]+buf[4]*i2cDecoder[buf[5]].toInt();
}
else
{
keyValue = power(10,(buf[1]*i2cDecoder[buf[2]].toInt()))*(255* buf[3]+buf[4]*i2cDecoder[buf[5]].toInt());
//keyValue = power(10,(buf[1]*i2cDecoder[buf[2]].toInt()));
Serial.println(keyValue);
}
}
void receiveEvent(int howMany)
{
unsigned int pos=0;
while (Wire.available () > 0)
{
byte c = Wire.read ();
//Serial.println(c);
if (pos < sizeof buf)
buf [pos++] = c;
}
getKeyValue();
i2c=true;
return;
}
void flag ()
{
if (keyValueState)
{
currentStateCLK = digitalRead(CLK);
if (currentStateCLK != lastStateCLK && currentStateCLK == 1){
if (digitalRead(DT) != currentStateCLK) {
keyValue --;
}
else {
keyValue ++;
}
}
lastStateCLK = currentStateCLK;
/*if (digitalRead(SW)==!lastStateSW)
{
unitState= false;
delay(botonPulse);
}*/
}
return;
}
void setup() {
Serial.begin(250000);
//I2C initialization
Wire.begin(adress);
Wire.onReceive(receiveEvent); // register event
//Oled initialization
/*if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
Serial.println(F("SSD1306 allocation failed"));
for(;;);
}
delay(2000);
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0, 10);
display.display();
display.println("Hello, world!");
display.display();
delay(100);
display.clearDisplay();
display.display();*/
//Encoder configuration
pinMode(CLK,INPUT);
pinMode(DT,INPUT);
pinMode(SW, INPUT_PULLUP);
lastStateCLK = digitalRead(CLK);
lastStateSW = digitalRead(SW);
attachInterrupt(digitalPinToInterrupt(CLK),flag,RISING);
}
void loop() {
//Serial.println(unitState);
if (i2c){
display.print(i2cDecoder[buf[0]]);
display.display();
Serial.println(i2cDecoder[buf[0]]);
i2c=false;
}
//Mostar en pantalla
if (digitalRead(SW)==!lastStateSW){
keyValueState= true;
delay(botonPulse);
Serial.println(keyValueState);
while (keyValueState)
{
Serial.println("Enter while");
if (digitalRead(SW)==!lastStateSW)
{
keyValueState= false;
delay(botonPulse);
}
display.clearDisplay();
display.setCursor(0, 35);
display.print("Key Value:");
display.print(keyValue);
display.display();
/*Serial.print("Key Value: ");
Serial.println(keyValue);*/
}
Serial.println(keyValueState);
}
}
