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edit approved Mar 7, 2016 at 4:03
Dave X
edit approved Mar 7, 2016 at 4:03
Dave X
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Analogmux:

int pin_Out_S0 = 8;
int pin_Out_S1 = 9;
int pin_Out_S2 = 10;
int pin_In_Mux1 = A0;
int Mux1_State[8] = {0};

void setup() {
  pinMode(pin_Out_S0, OUTPUT);
  pinMode(pin_Out_S1, OUTPUT);
  pinMode(pin_Out_S2, OUTPUT);
  //pinMode(pin_In_Mux1, INPUT);
  Serial.begin(9600);
}

void loop() {
  updateMux1();
  for(int i = 0; i < 8; i ++) {
    if(i == 7) {
      Serial.println(Mux1_State[i]);
    } else {
      Serial.print(Mux1_State[i]);
      Serial.print(",");
    }
  }
}

void updateMux1 () {
  for (int i = 0; i < 8; i++){
    digitalWrite(pin_Out_S0, HIGH && (i & B00000001));
    digitalWrite(pin_Out_S1, HIGH && (i & B00000010));
    digitalWrite(pin_Out_S2, HIGH && (i & B00000100));
    Mux1_State[i] = analogRead(pin_In_Mux1);
  }
}

int pin_Out_S1 = 9; int pin_Out_S2 = 10; int pin_In_Mux1 = A0; int Mux1_State[8] = {0};

void setup() { pinMode(pin_Out_S0, OUTPUT); pinMode(pin_Out_S1, OUTPUT); pinMode(pin_Out_S2, OUTPUT); //pinMode(pin_In_Mux1, INPUT); Serial.begin(9600); }

void loop() { updateMux1(); for(int i = 0; i < 8; i ++) { if(i == 7) { Serial.println(Mux1_State[i]); } else { Serial.print(Mux1_State[i]); Serial.print(","); } } }

void updateMux1 () { for (int i = 0; i < 8; i++){ digitalWrite(pin_Out_S0, HIGH && (i & B00000001)); digitalWrite(pin_Out_S1, HIGH && (i & B00000010)); digitalWrite(pin_Out_S2, HIGH && (i & B00000100)); Mux1_State[i] = analogRead(pin_In_Mux1); } }

analogmuxvolts

int pin_Out_S0 = 8; int pin_Out_S1 = 9; int pin_Out_S2 = 10; int pin_In_Mux1 = A0; int Mux1_State[8] = {0}; //float Mux1_State[i] =0; int RawValue=0; float Voltage = 0; void setup() { pinMode(pin_Out_S0, OUTPUT); pinMode(pin_Out_S1, OUTPUT); pinMode(pin_Out_S2, OUTPUT); pinMode(pin_In_Mux1, INPUT); Serial.begin(9600); }And analogmuxvolts

void loop() { RawValue = analogRead(pin_In_Mux1); Voltage = (RawValue * 5.0) / 1024; //scale the ADC updateMux1(); Serial.println(Mux1_State); for(int i = 0; i < 8; i ++) { if(i == 7) { Serial.println(Mux1_State[i]); } else { Serial.print(Mux1_State[i]); Serial.print(","); //vout = (value * 5.0) / 1024.0; } } Serial.print("Raw Value = " ); Serial.print(RawValue); }

int pin_Out_S0 = 8;
int pin_Out_S1 = 9;
int pin_Out_S2 = 10;
int pin_In_Mux1 = A0;
int Mux1_State[8] = {0};
//float Mux1_State[i] =0;
int RawValue=0;
float Voltage = 0;
void setup() {
  pinMode(pin_Out_S0, OUTPUT);
  pinMode(pin_Out_S1, OUTPUT);
  pinMode(pin_Out_S2, OUTPUT);
  pinMode(pin_In_Mux1, INPUT);
  Serial.begin(9600);
}


void loop() {
 RawValue = analogRead(pin_In_Mux1);
 Voltage = (RawValue * 5.0) / 1024; //scale the ADC
  updateMux1();
  Serial.println(Mux1_State);
  for(int i = 0; i < 8; i ++) {
    if(i == 7) {
      Serial.println(Mux1_State[i]);
    } else {
      Serial.print(Mux1_State[i]);
      Serial.print(",");
      //vout = (value * 5.0) / 1024.0;
    }
  }
  Serial.print("Raw  Value = " );
  Serial.print(RawValue); 
}

Analogmux

int pin_Out_S0 = 8;

int pin_Out_S1 = 9; int pin_Out_S2 = 10; int pin_In_Mux1 = A0; int Mux1_State[8] = {0};

void setup() { pinMode(pin_Out_S0, OUTPUT); pinMode(pin_Out_S1, OUTPUT); pinMode(pin_Out_S2, OUTPUT); //pinMode(pin_In_Mux1, INPUT); Serial.begin(9600); }

void loop() { updateMux1(); for(int i = 0; i < 8; i ++) { if(i == 7) { Serial.println(Mux1_State[i]); } else { Serial.print(Mux1_State[i]); Serial.print(","); } } }

void updateMux1 () { for (int i = 0; i < 8; i++){ digitalWrite(pin_Out_S0, HIGH && (i & B00000001)); digitalWrite(pin_Out_S1, HIGH && (i & B00000010)); digitalWrite(pin_Out_S2, HIGH && (i & B00000100)); Mux1_State[i] = analogRead(pin_In_Mux1); } }

analogmuxvolts

int pin_Out_S0 = 8; int pin_Out_S1 = 9; int pin_Out_S2 = 10; int pin_In_Mux1 = A0; int Mux1_State[8] = {0}; //float Mux1_State[i] =0; int RawValue=0; float Voltage = 0; void setup() { pinMode(pin_Out_S0, OUTPUT); pinMode(pin_Out_S1, OUTPUT); pinMode(pin_Out_S2, OUTPUT); pinMode(pin_In_Mux1, INPUT); Serial.begin(9600); }

void loop() { RawValue = analogRead(pin_In_Mux1); Voltage = (RawValue * 5.0) / 1024; //scale the ADC updateMux1(); Serial.println(Mux1_State); for(int i = 0; i < 8; i ++) { if(i == 7) { Serial.println(Mux1_State[i]); } else { Serial.print(Mux1_State[i]); Serial.print(","); //vout = (value * 5.0) / 1024.0; } } Serial.print("Raw Value = " ); Serial.print(RawValue); }

Analogmux:

int pin_Out_S0 = 8;
int pin_Out_S1 = 9;
int pin_Out_S2 = 10;
int pin_In_Mux1 = A0;
int Mux1_State[8] = {0};

void setup() {
  pinMode(pin_Out_S0, OUTPUT);
  pinMode(pin_Out_S1, OUTPUT);
  pinMode(pin_Out_S2, OUTPUT);
  //pinMode(pin_In_Mux1, INPUT);
  Serial.begin(9600);
}

void loop() {
  updateMux1();
  for(int i = 0; i < 8; i ++) {
    if(i == 7) {
      Serial.println(Mux1_State[i]);
    } else {
      Serial.print(Mux1_State[i]);
      Serial.print(",");
    }
  }
}

void updateMux1 () {
  for (int i = 0; i < 8; i++){
    digitalWrite(pin_Out_S0, HIGH && (i & B00000001));
    digitalWrite(pin_Out_S1, HIGH && (i & B00000010));
    digitalWrite(pin_Out_S2, HIGH && (i & B00000100));
    Mux1_State[i] = analogRead(pin_In_Mux1);
  }
}

And analogmuxvolts

int pin_Out_S0 = 8;
int pin_Out_S1 = 9;
int pin_Out_S2 = 10;
int pin_In_Mux1 = A0;
int Mux1_State[8] = {0};
//float Mux1_State[i] =0;
int RawValue=0;
float Voltage = 0;
void setup() {
  pinMode(pin_Out_S0, OUTPUT);
  pinMode(pin_Out_S1, OUTPUT);
  pinMode(pin_Out_S2, OUTPUT);
  pinMode(pin_In_Mux1, INPUT);
  Serial.begin(9600);
}


void loop() {
 RawValue = analogRead(pin_In_Mux1);
 Voltage = (RawValue * 5.0) / 1024; //scale the ADC
  updateMux1();
  Serial.println(Mux1_State);
  for(int i = 0; i < 8; i ++) {
    if(i == 7) {
      Serial.println(Mux1_State[i]);
    } else {
      Serial.print(Mux1_State[i]);
      Serial.print(",");
      //vout = (value * 5.0) / 1024.0;
    }
  }
  Serial.print("Raw  Value = " );
  Serial.print(RawValue); 
}
Source Link
Tom Evans
Tom Evans
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  • 9

int not declared in this scope

This posting contains 2 sketches. the analogmux1 compiles successfully. Concerning analogmuvvolts sketch an error stating updateMux1 was not declared in this scope results. The int Mux1_State [8] = 0: is defined exactly the same in both however the error results.

I'm learning Arduino programming so there are other errors in the sketch. What I'm trying to accomplish is to display the actual voltage of each channel, not numbers which appear in the analogMux.

It would be appreciated if the community could provide me with some guidance.

Analogmux

int pin_Out_S0 = 8;

int pin_Out_S1 = 9; int pin_Out_S2 = 10; int pin_In_Mux1 = A0; int Mux1_State[8] = {0};

void setup() { pinMode(pin_Out_S0, OUTPUT); pinMode(pin_Out_S1, OUTPUT); pinMode(pin_Out_S2, OUTPUT); //pinMode(pin_In_Mux1, INPUT); Serial.begin(9600); }

void loop() { updateMux1(); for(int i = 0; i < 8; i ++) { if(i == 7) { Serial.println(Mux1_State[i]); } else { Serial.print(Mux1_State[i]); Serial.print(","); } } }

void updateMux1 () { for (int i = 0; i < 8; i++){ digitalWrite(pin_Out_S0, HIGH && (i & B00000001)); digitalWrite(pin_Out_S1, HIGH && (i & B00000010)); digitalWrite(pin_Out_S2, HIGH && (i & B00000100)); Mux1_State[i] = analogRead(pin_In_Mux1); } }

analogmuxvolts

int pin_Out_S0 = 8; int pin_Out_S1 = 9; int pin_Out_S2 = 10; int pin_In_Mux1 = A0; int Mux1_State[8] = {0}; //float Mux1_State[i] =0; int RawValue=0; float Voltage = 0; void setup() { pinMode(pin_Out_S0, OUTPUT); pinMode(pin_Out_S1, OUTPUT); pinMode(pin_Out_S2, OUTPUT); pinMode(pin_In_Mux1, INPUT); Serial.begin(9600); }

void loop() { RawValue = analogRead(pin_In_Mux1); Voltage = (RawValue * 5.0) / 1024; //scale the ADC updateMux1(); Serial.println(Mux1_State); for(int i = 0; i < 8; i ++) { if(i == 7) { Serial.println(Mux1_State[i]); } else { Serial.print(Mux1_State[i]); Serial.print(","); //vout = (value * 5.0) / 1024.0; } } Serial.print("Raw Value = " ); Serial.print(RawValue); }