Code for displaying temperature on lcd

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sjjm

Joined: 17 Apr 2006
Posts: 16

19 Apr 2006 11:22 Code for displaying temperature on lcd

hie
Im looking for a full working code for a pic16f872 which accepts an input from a temperature sensor(LM35) compares it with a set temperature and varies the duty cycle of pulses from a zero crossing detector which also feeds its output to the pic.
The measured temperature from the pic also has to be displayed on an hd44780 lcd(16x2 character display).
HELP!!!

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hjamleh

Joined: 06 Oct 2005
Posts: 27
Helped: 3
Location: Taiwan

19 Apr 2006 20:16 Re: Code for displaying temperature on lcd

Hmmmm, you are mashkaljy/mashkaljyah.... Asking the same question many times!!! From which university you are? I am sure you are from Jordan, isn't it Very Happy

.

I would like to help you, but I am (hen mang) very busy these days. If you remind me this satureday. I will help you from A to Z.

Good luck

sento

Joined: 23 Aug 2005
Posts: 23

19 Apr 2006 21:55 Re: Code for displaying temperature on lcd

Temperature meassuring PIC16F876 & LM35DZ

movlw b'01000001' ; fosc/8, kanal 0, A/D on
movlw b'01001001' ; fosc/8, kanal 1, A/D on
movlw b'01010001' ; fosc/8, kanal 2, A/D on
movlw b'01011001' ; fosc/8, kanal 3, A/D on
movlw b'01100001' ; fosc/8, kanal 5, A/D on
movwf ADCON0
call ANALOG_3 ;
.
.
.

ANALOG_3
call WAIT200us
bcf STATUS,C
bsf ADCON0,GO ;start A/D prevodu
btfsc ADCON0,GO ; konec prevodu GO=0 (nebo ADIF=1 ?)
goto $-1 ; prevod A/D jeste neskoncil
call WAIT200us
;-------------------------------
movf ADRESH,W
movwf L_ANALOG_H
;-------------------------------
bsf STATUS,RP0 ;nastaveni BANKY 1
movf ADRESL,W
bcf STATUS,RP0 ;nastaveni BANKY 0
movwf L_ANALOG_L
;-------------------------------

return ; value: L_ANALOG_H/L_ANALOG_L