Help me in Programming for sensing current and voltage using P89V51RD2

[Santhoshksk]

Guys .. i need to write a C code for sensing the voltage and current using the microcontroller P89V51RD2.. in LCD i want to display the exact voltage value i.e. like 8.2V and also the current..and i also want give an reference voltage and current and when the V,I is less than the ref value i have to cut the supply to the load else give supply.. for current sensing i am using the AD8215 IC..... if anyone has the code r know the code means.. please help me... thanks in advance..

 

[aameer]

Does your microcntroller has inbuilt ADC.. if not then interface your microcntroller with external ADC.
learn from here how to interface ADC0808 with 8051
**broken link removed**

 

[Santhoshksk]

Dude.. i have now displayed the voltage ... but the microcontroller takes the high value of 5V right..i displayed the voltage value via ADC oly.. but now i want to display 6V battery value in LCD via ADC.. and i have to keep track of the voltage drop.. so that when it comes down some reference voltage .. say 3V i have cut the supply to the load.. but it doesn't shows the exact value in LCD.. this is my problem

 

[Golden Electronics]

How u adc configure bot h/w & s/w ?

 

[embpic]

Hav u sense current mean measure current

 

[Ogu Reginald]

Check this book: microcontroller projects in c for the 8051. by Dogan Ibrahim
See link: zux163-090.adsl.green.ch.armando/eB...

 

[Santhoshksk]

It is like this dude i have an current sensing IC . with help of it i have to display the current value.. but first i want to display the exact voltage value in the LCD via ADC.The battery voltage ll be 6V

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Golden Electronics... i have interfaced the ADC both in s/w and checked in h/w also.. now i hav to displaying the exact voltage value...
i.e starting from 6V

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Ogu Reginald. thanks for book .. i ll check out and inform u.. whether the thing i wanted is there r not