[AVR] Variable value convert in decimal

Hi all...

i am programming ATMEGA32 microcontroller and ATMEL STUDIO 6 for programming in my application.

in my application user enter 3 difference value which i have store in char variable.

At the end i combine this 3 value in one variable and compare it with predefine value. when i combine in one variable it automatically convert into decimal.

for example i have 3 variable named S1,S2,S3

user enter S1=2,S2=0,S3=9;

at end combine value in TOTAL variable which is INT.

TOTAL = (S3 | (S2 << 4) | (S1 << 8));

so TOTAL value should be 209

but it shows after decimal conversation 521.

when i compare it with 209 this gives no result, but it gives result when my predefine value 521.

i want to get result when user enter 209 and my predefine value also 209.

You seem to be assuming that 2<<8 is 200. In my calulation it's 512.

The C operator << is describing binary rather than BCD operation.

you can try thiis:
uint_16 a;
int b;
a = S3;
a = (a<<8)|S2;
a = (a<<8)|S1;
b = a ;

You can try (S1 * 100) + (S2 * 10) + S3.

you can try this:
uint_16 a;
int b;
a = S3;
a = (a<<8)|S2;
a = (a<<8)|S1;
b = a ;

Click to expand...

Did you understand at all what the original poster wants to achieve? It rather looks like he want to assemble decimal digits, like

respectively performed as sequential action

:thumbsdown::thumbsdown: