Problem related to coding

Projects Programming
1

#include <SPI.h>

const int slaveSelect = 11;

void setup()
{
Serial.begin(9600);
SPI.begin();
SPI.setDataMode (SPI_MODE0); //Mode 0: CPOL=0, CPHA=0 / (0,0)
pinMode(slaveSelect, OUTPUT);
ADC_Set(0,0);
}

void loop()
{
for(unsigned int i = 0; i < 41; i++) // 0.1V Schritte bis 4.000V (16004062.5E-6 = 4.000V)
{
ADC_Set(1600,i); // 0.1V
delay(300000); // 5 Minuten
}
}

void ADC_Set(unsigned int Wert, unsigned int Faktor)
{
if (( Faktor < 4100) && ( Faktor >= 0))
{
MSB = highByte(WertFaktor);
LSB = lowByte(WertFaktor);
digitalWrite(slaveSelect,LOW); // Slave waehlen
SPI.transfer(MSB); // MSB
SPI.transfer(LSB); // LSB
digitalWrite(slaveSelect,HIGH); // Slave deaktivieren
delay(10);
}
else
{
Faktor = 0;
}
}

I tried this code but it shows MSB was not declared in the scope. What changes should be made to make it correct?

2

And what line number did it give with the message????

Paul

3

I do not see where the variables MSB or LSB are declared.

This will declare local variables. MSB or LSB will not be accesable outside the if block.

    byte MSB = highByte(Wert*Faktor);
    byte LSB = lowByte(Wert*Faktor);

Information on variable declaration.

Variable scope.