- Programování mikrokontroleru PIC16F1508 v Assembly v rámci předmětu Architektura Počítačů.
- Cílem předmětu je se seznámit s současným stavem počítačové architektury na různých úrovních abstrakce.
- Náplň svičení jsou Principy programování ve strojovém kódu, instrukční soubor mikrořadičů PIC a jednotlivé úlohy na programování paměti a periferií.
- Pomocí Potenciometru 1 plynule nastavujte barvu RGB LED (R-G-B-R) a pomocí Potenciometru 2 její jas.
- MPlabX ver. 5.35. Linux
- Note that v5.35 is the last version to support using assembly directly, as opposed to embedded within C code
- To run the project on your machine (Linux, Windows) Dowload the official software from microchip.com
;Uloha_26.asm
;Pomocí P1 plynule nastavujte barvu RGB LED (R-G-B-R) a pomocí P2 její jas
;Zaklad pro psani vlastnich programu
list p=16F1508
#include "p16f1508.inc"
#define LED1 PWM1DCH
#define LED2 PWM2DCH
#define LED3 PWM3DCH
__CONFIG _CONFIG1, _FOSC_INTOSC & _WDTE_OFF & _PWRTE_OFF & _MCLRE_ON & _CP_OFF & _BOREN_OFF & _CLKOUTEN_OFF & _IESO_OFF & _FCMEN_OFF
__CONFIG _CONFIG2, _WRT_OFF & _STVREN_ON & _BORV_LO & _LPBOR_OFF & _LVP_ON
;VARIABLE DEFINITIONS
;COMMON RAM 0x70 to 0x7F
CBLOCK 0x70
temp
temp2
range
LED1_ON
LED2_ON
LED3_ON
prevP1_H
prevP1_L
prevP2_H
prevP2_L
red
green
blue
ENDC
;**********************************************************************
ORG 0x00
goto Start
ORG 0x04
nop ;pripraveno pro obsluhu preruseni
retfie
Start
movlb .1 ;Bank1
movlw b'01101000' ;4MHz Medium
movwf OSCCON ;nastaveni hodin
call Config_IOs ;vola nastaveni pinu
;config AD Prevodniku
movlb .1
movlw b'00101000' ;P2 = AN10
movwf ADCON0
movlw b'01110000' ;leftAlig, FRC, VDD
movwf ADCON1
clrf ADCON2 ;single conv.
bsf ADCON0,ADON ;zapnout ADC
;config TMR2
movlb .0 ;Banka0 s TMR2
clrf T2CON ;1:1 pre, 1:1 post prescalor
clrf TMR2 ;vynulovat citac na 0 postscalor
movlw 0xFF ;(4000000/4)/256 = 3906.25 Hz pro oko neviditelne
movwf PR2 ;nastavit na max. hodnotu
bsf T2CON,TMR2ON ;po nastaveni vseho zapnout TMR2
;config PWM3! ne PWM1
movlb .12 ;PWM moduly v Bance 12
clrf PWM3DCH
clrf PWM3DCL
bsf PWM3CON,PWM3OE ;povolit vystup signalu na pin (Output enable)
bsf PWM3CON,PWM3EN ;spustit PWM3
;config PWM1
clrf PWM1DCH
clrf PWM1DCL
bsf PWM1CON,PWM1OE ;povolit vystup signalu na pin (Output enable)
bsf PWM1CON,PWM1EN ;spustit PWM1
;config PWM2
clrf PWM2DCH
clrf PWM2DCL
bsf PWM2CON,PWM2OE ;povolit vystup signalu na pin (Output enable)
bsf PWM2CON,PWM2EN ;spustit PWM1
;neprime adresovani
movlw 0x06 ; Adresa PWM3DH = 0x0612
movwf FSR0H
movlw 0x18
movwf FSR0L ; Control PWM3DCH ;ovlada vykon a svit
movlb .0 ;Banka0 s PORT
Loop ;Hlavni smycka
;Read P1 and P2
;Barva = Potenciometer 1
call ReadP1 ;PRecte Potenciometr 1 a vysledek ulozi do prevP1_H a prevP1_L
;call MapToRGB ;Preved 10-bit vysledek ADC na 8-bit.
call SetRGB ;Nastav barvu dle rozsahu Potenciometru
;Jas = Potenciometer 2
call ReadP2
call setBrightness;Nastav Jas dle hodnoty prevP2_H u zapnut�ch LED
goto Loop
ReadP1
;start ADC prevodniku
movlb .1 ;Banka1 s ADC
movlw b'00011001' ;P1 = AN6
movwf ADCON0 ;nastav cteni z P1
bsf ADCON0,GO ;start A/D prevodu
btfsc ADCON0,GO ;A/D prevod skoncen?
goto $-1 ;pokud ne, navrat o radek vyse
;10-bit binary result via successive approximation and stores the conversion result into the
;ADC result registers (ADRESH:ADRESL register pair).
movf ADRESH,W
movwf prevP1_H ;uloz horn�ch 8 bit? do prevP1_H
movf ADRESL,W
movwf prevP1_L ;uloz spodn� 2 bity do prevP1_L
return
ReadP2
movlb .1 ;Banka1 s ADC
movlw b'00101001' ;P2 = AN10
movwf ADCON0
bsf ADCON0,GO ;start A/D prevodu
btfsc ADCON0,GO ;A/D prevod skoncen?
goto $-1 ;pokud ne, navrat o radek vyse
movf ADRESH,W
movwf prevP2_H
movf ADRESH,W
movwf prevP2_L
return
MapToRGB
; 10bitovou hodnotu na 8bitovou (0-255) pro jednoduchost
movf prevP1_H,W
movwf temp
rrf temp,F
movwf prevP1_L
movf temp,W
rrf temp,F
movwf prevP1_H
;8bitovou hodnotu je v prevP1_H a prevP1_L
return
SetRGB
movlb .12 ;Banka 12 ss PWM
movf prevP1_H,W
movwf temp
; Rozd?len� hodnoty z potenciometru 1 na ctyri casti(256/4) = 64
movlw .64
movwf range
movf prevP1_H,W
subwf range,W
btfsc STATUS,C
goto Section1
;Green range
movf prevP1_H,W
addwf range,W
btfss STATUS,C
goto Section2
;Blue range
goto Section3
Section1
;Turn on / off LED var
bcf LED2_ON,0
bsf LED3_ON,0;blue vypnuto
bcf LED1_ON,0
movf temp,W
subwf range,W
movwf red
movwf PWM1DCH
subwf range,W
movwf green
movwf PWM2DCH
;Blue vypnuto
clrf blue
clrf PWM3DCH
clrf PWM3DCL
return
Section2
;Turn on / off LED var
bcf LED2_ON,0
bcf LED3_ON,0
bsf LED1_ON,0
movf temp,W
subwf range,W
sublw .84
movwf temp2 ; Ulo?en� do?asn� hodnoty
; Line�rn� zv�?en� hodnoty blue
movlw .84
subwf temp2,W
movwf blue
movwf PWM3DCH
; Line�rn� sn�?en� hodnoty green
movf temp,W
sublw .64
movwf temp
movlw .128
subwf temp,W
movwf green
movwf PWM2DCH
;Red vypnutu
clrf red
clrf PWM1DCH
clrf PWM1DCL
return
Section3
;Turn on / off LED var
bsf LED2_ON,0
bcf LED3_ON,0
bcf LED1_ON,0
;Line�rn� zvyseni hodnoty red
movf temp,W
sublw .85
subwf range,W
movlw .190
subwf temp,W
movwf red
movwf PWM1DCH
; Line�rn� snizeni hodnoty blue
movf temp,W
sublw .64
movwf temp
sublw .128
subwf temp,W
movwf blue
movwf PWM3DCH
;Green
clrf green
clrf PWM2DCH
clrf PWM2DCL
return
setBrightness
movlb .12 ;Banka 12 ss PWM
movf prevP2_H,W ;Hornich 8 bit z P2
btfss LED3_ON,0;If LED3 is ON
movwf PWM3DCH; Write to PWM3DCH
;incf FSR0L, F ; Increment FSR0L
;opakuj pro ostatni PWM
btfss LED2_ON,0
movwf PWM2DCH
;incf FSR0L,F
btfss LED1_ON,0
movwf PWM1DCH
;incf FSR0L,F
return
#include "Config_IOs.inc"
END
Changing the color with P1
Changing the color brightness with P2
