convert adc value in to multiples

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asthra123

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dear sir,
how can we convert an input voltage 0-5 volts to 0-500 (measuring parameter) and show in to windows foam (visual c#).
i am using pic16f877 programmed in assembly ...
i can receive the actual input voltage (0-5) from uart (RS232) in windows foam in visual c#.how to show the multiples of 10 or 100 ?
please help me.
seby
 

volt = volt * 5 / 1023; //for 10 bit adc

//The above gives 5V for 5V


//If 5V has to be represented as 500 then you have to multiply by 100


volt = volt * 500 / 1023;

//if volt is 1023 (1023 raw adc value = 5V) then
//1023 * 500 / 1023 = 500
 
data = ADC_value*500/1023; don forget multiply divide sequence

(this is for 10 bit adc.. put( ( 2^number_of_bits ) - 1 ) in 1023s place for various bit lengths....
 

Microcontroller datasheets (e.g. from Microchip) keeps pretending that an ADC LSB is Vref/1024 rather than Vref/1023.
 

In assembly you not sent a raw bit, it may cause receive problem because it send control char too for certain ADC value.

you need to divide into 3 char such as 0011 1111 1111 send as adc::123;

in c# read char 1,2,3 separately by ref of adc:: and ;

and finally can convert actual value by simple math functions.
 

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