need help in handling ADC in PIC using ASM

[bhaskaran]

pic adc code in asm

i have tried to capture the data from the ADRESL and ADRESH , when ever iam moving this data to any buffer my system get hang.

kindly help me in solving this problem.(using assembly language )

 

[olemp]

adc pic hangs

if we are currently in bank 0

movf ADRESH,w
movwf adch
banksel ADRESL
movf ADRESL,w
banksel ADRESH
movwf adcl

now you have the information in adc registers in adch and adcl

 

[bhaskaran]

adc asm pic

i have changed the bank accordingly. the actual status of my project is, when i moved the data of ADRESL directly to the port it is showing some reading but when ever i moved to any buffer, no value is displayed.

 

[olemp]

pic adc code in asm

hi. i could't understant the problem exactly but the code i sent should work...
perhaps you could't load correct values to ancon0 and adcon1...
don't forget: to load adresl register to any port, after taking asresl value to w, you have to pass bank0...otherwise you will change the tris register....
perhaps you should send your code.....
and i recomment that document:
https://ww1.microchip.com/downloads/en/DeviceDoc/adc.pdf