Hello...
I am new to this cyppress controllers,I have just started to working on CY7C6435648LTXC controller.I was doing ADC LCD coding.
Here my problem is I am getting the ADC output,that again i am converting to voltage and displayiingbon LCD.That output voltage if i am measureing with the multimeter that is not matching with the output voltage of ADC.
I am using external voltage divider circuit (potentiometer).
Can any one help me to sort out this.
And this is my code.
-=======================================================================================
#include <m8c.h> // part specific constants and macros
#include "PSoCAPI.h" // PSoC API definitions for all User Modules
#include "stdlib.h"
void main(void)
{
int val = 0, flag = 0;
float Scaling_factor,voltage;
//int Result;
char *Result;
int status;
LCD_Start(); //Initializing LCD
flag = (PRT0DR & 0x01);
MUX_CR1 = flag; //Connecting Output of ADC to P0.0
ADCINC_Start(ADCINC_INPUT_ANALOG_BUS);//Start conversion
LCD_Position(0,0);
LCD_PrCString("ADC_OUTPUT = ");
LCD_PrHexInt(flag);
LCD_Position(1,0);
LCD_PrCString("ADC_Vin=");
while(1)
{
//val = ADCINC_GetSample(); //get the ADC value
//while(ADCINC_fIsDataAvailable())
{
val = ADCINC_GetSample();
LCD_Position(0,12);
LCD_PrHexInt(val);
voltage= (val /(float)1023);
voltage *= (3.3);
//voltage = (val * Scaling_factor);
Result = ftoa(voltage , &status);
LCD_Position(1,8);
LCD_PrString(Result);
//LCD_PrCString("v");
}
}
}
