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Analog to Digital conversion using PIC16f877

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winsthon

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Could anyone help me, Im having a problem making the code using C to convert analog to digital and display them on an LCD as HEX using PIC16f877. I use the analog input RA0, RA1 and RA2, the ouputs are RB0 to RB7and RD7 to RD6 equal to 10bits. I want to display the result of this in HEX value to the LCD. can anyone give me a code for this? If you want the schematic diagram of the circuit I can email it. Thanks
 

energy_tr

New Member
I'm not a very experienced guy on this topic.. :)

but.. as far as I remember, you might need to read the specsheet of the PIC you're using.. learn how to activate the analog inputs, the should be 5-10 lines of code to turn on the adc converters on input pins.

after the ADC's are turned on, you might poll the converter outputs for "read_voltage" kinda pic command (in C code) , and then implement a short function, that outputs the voltage readout from the analog inputs, to the output data port. as it's bigger than 8 bits, you might concatanate the value, or divide the valur into two different integer values (MSB 8 bits are the number rightshifted by two bits) and the LSB 2 bits are number module 4, or the number ORed with x03 (hexadecimal three)...

hope it helps...
 

energy_tr

New Member
the input pins can be turned on and off, later in time (while the program is running) by a simple port_enable or port_disable command from the C code in the PIC...
 

ericgibbs

Well-Known Member
Most Helpful Member
the input pins can be turned on and off, later in time (while the program is running) by a simple port_enable or port_disable command from the C code in the PIC...

hi energy,
Have you seen the date of the OP..?:)
 
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