Need program for ADC

[nistelrooy]

I'm using a PIC 16F84A and interfacing it with a LM35DZ temperature sensor, which has to be used with an ADC 0804 (national, 8-bit)

I need a program in MPLAB to enable the PIC to read the temperature from the ADC.

Thanks in advance.

 

[Nigel Goodwin]

I'm using a PIC 16F84A and interfacing it with a LM35DZ temperature sensor, which has to be used with an ADC 0804 (national, 8-bit)

I need a program in MPLAB to enable the PIC to read the temperature from the ADC.

I suggest you dump the obselete 18F84, and use a current device instead, the 16F819 is pin compatible and includes 10 bit A2D internally, plus an internal clock oscillator. It would simplify, and reduce the cost of, your project considerably.

 

[terka]

Hi, i made a circuit using ADC0832, is simplest...

1.- Activate CHIP SELECT
2.- Send to ADC de mux addres to select ADC port/channel using CLOCK signal
3.- Receive the byte of conversion, MSB firts (test bit in input pin of PIC and set/clear carry to shift left the Carry on ADC_Resul byte register) or LSB firts (idem but shift right). both method needs a counter of 8 bits.
4.- Once received ADC_Result, put CHIP SELECT to LOW to deselect ADC.


I hope this help you.

Bye