an analog I/O, all other ANx pins are analog inputs. TRIS bit should be set to input mode when using pins as analog inputs. Note 1: Setting a pin to an analog input disables the digital input buffer. Bits select input function on corresponding AN pins. ĚNSEL: ANALOG SELECT REGISTER(ADDRESS 9Bh) PIC16F88 DEVICES ONLY Note: On a Power-on Reset, the pins PORTA are configured as analog 16F676 AND SOME PARAMETERS ARE LOCATED IN DIFFERENT REGISTERS - ADCON1 AND ANCON0
Pic16f676 adc with pbp3 code#
IMPORTANT - THE COMMENTS BELOW REFER TO THE 16F88 CHIP, THE CODE ABOVE IS MODIFIED FOR THE MOVLW b'00000001' Set RA0 as analog inputĬALL Delay1ms Wait MUCH longer then required aquasition time, see below for timeīTFSCĚDCON0,GO Wait for conversion to be complete MOVLW b'00100001' Bit 5 input, Bit 0 for ADC _CONFIG _CP_OFF & _CPD_OFF & _BODEN_OFF & _MCLRE_OFF & _WDT_OFF & _PWRTE_ON & _INTRC_OSC_NOCLKOUT Program : ADC Example, Takes ADC result from AN0 and display LSB on PORTB
Note that it only displays the low 6 bits of the adc results on port C, you will have to change things to see the other 4 bits of the result on either PortC again or at the same time on PortA
Pic16f676 adc with pbp3 full#
You can see it is full of comments about what is happening and how it certain values are calculated Here is some 'proper' adc code which was for a pic16f88 which I have modified for the pic16F676 and ran ok in simulation. Post added at 17:04 - Previous post was at 16:08. Give us some answers and possibly a diagram or link to the original code. Only the ADRESL is displayed because that all it programmed to do, to display the ADRESH 2 bits you need to tell it to display it. What oscillator frequency are you wanting to use ?Īpart from 0v what is the signal /voltage you are wanting to read in ? What Pin are you using for the ADC input ? its coded for RC2 Were did you get that code from - its a very poor example, no Configurations code shown, no comments, using direct addressing - horrible !įirst have to ask are you using any configuration bits in your code ?Īre you simulating it or running it on hardware ?
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