ADC interfacing with 8051uc

[Dhvanil shah]

hi

I am doing the project of water level conroller.If i am doing only adc then i will get the answer.

In water level i have maintain the lowest and highest level.for that lowest level my adc pattern is 15h and the highest level my adc pattern is 0ffh.

As a final control element i will use the relay.

I willm get the only one answer that is 15h.when i cahange the dloat position i will not getthe change in adc while connectn with the 8051.My program is

org 0000h

mov p1,#0ffh

acall adc

mov a,p1

l3:cjne a,#15h,l2

setb p3.3

l2:cjne a,#0ffh,l3

clr p3.3

adc: setb rd

setb intr

clr wr

here: jb intr,here

clr rd

end

 

[AJISH ALFRED]

Ok. So what is your question actually ?

Please make it more understandable for others, so that they can help you better.

[Dhvanil shah]

my question is when i am connect 8051uc with my data cannot change.My data is only 15h which is my lowest float position.with the change in float position my data remain 15h.

[Ashutosh Bhatt]

my friend you dont need ADC at all.

float gives only two values 0-low or 1-high. you can directly detect this level change through micro controller pin.  but if your float is somewhat different read its manual, to understand its operation

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