FisionX/pic18f4550-examples
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Fernando 2025-02-27 08:50:19 -06:00
parent 96bee98513
commit f4fdcb11c1
20 changed files with 216 additions and 5949 deletions
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2
Makefile
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@ -22,7 +22,7 @@ clean:
rm -f $(SRC:.c=.asm) $(SRC:.c=.cod) $(SRC:.c=.hex) $(SRC:.c=.lst) $(SRC:.c=.o) rm -f $(SRC:.c=.asm) $(SRC:.c=.cod) $(SRC:.c=.hex) $(SRC:.c=.lst) $(SRC:.c=.o)
program: program:
pk2cmd -M -P${PPROC} -Fout.hex pk2cmd -M -P${PPROC} -Fmain.hex
asm: *.asm asm: *.asm
gpasm -p ${ASMPROC} -o main.hex $^ gpasm -p ${ASMPROC} -o main.hex $^

7
README.md Normal file
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@ -0,0 +1,7 @@
# Pic GPASM examples
Pic development on linux
## Dependencies
- gputils
- SDCC (Small Device C Compiler) optional for C development
- pk2cmd for pickit programmers

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blink/main.cod
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blink/main.lst
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47
cuenta/main.asm
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@ -76,13 +76,13 @@ loop:
goto des ; cuenta 3 wip goto des ; cuenta 3 wip
xorlw ROTA3^ROTA4 xorlw ROTA3^ROTA4
btfsc STATUS, Z btfsc STATUS, Z
goto alternate goto hexAsc
xorlw ROTA4^ROTA5 xorlw ROTA4^ROTA5
btfsc STATUS, Z btfsc STATUS, Z
goto centerout goto bcdt
xorlw ROTA5^ROTA6 xorlw ROTA5^ROTA6
btfsc STATUS, Z btfsc STATUS, Z
goto outcenter goto hext
goto loop goto loop
hexa: hexa:
@ -122,29 +122,50 @@ decimal:
Call Delay Call Delay
goto decimal goto decimal
alternate: hexAsc:
movlw 0xff movlw 0xff
movwf CUENTA movwf CUENTA
call splitDigit
call Delay
rl2: rl2:
call splitDigit call splitDigit
call Delay call Delay
decfsz CUENTA decfsz CUENTA
goto rl2 goto rl2
goto alternate goto hexAsc
centerout: ;; clock bcdt: ;; count to a thousand
return clrf CUENTA
clrf CUENTA2
outcenter: co:
call splitDigit call splitDigit
call Delay call Delay
incf CUENTA, W incf CUENTA, W
daw daw
movwf CUENTA movwf CUENTA
Call Delay btfss STATUS, C
goto decimal goto co
incf CUENTA2, W
daw
movwf CUENTA2
btfss STATUS, C
goto co
return
hext:
clrf CUENTA
clrf CUENTA2
ht:
call splitDigit
call Delay
incf CUENTA, W
movwf CUENTA
btfss STATUS, Z
goto ht
clrf CUENTA
incf CUENTA2, W
movwf CUENTA2
btfss STATUS, Z
goto ht
return
splitDigit: splitDigit:
movf CUENTA, W movf CUENTA, W

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cuenta/main.cod
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cuenta/main.hex
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@ -1,30 +1,39 @@
:020000040000FA :020000040000FA
:10000000956A8C6A8A6AF19EFF0E936E0F0EC16E1E :0400000006EF00F017
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:1001600031C023F084EC00F0836E202E9AEF00F073 :10015000A3EF00F01200010EFA6E23502324660F65
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:1001C00000F0836E020E846EA1EC00F0836A32C0F0
:1001D00023F0ABEC00F0836E010E846EA1EC00F016
:1001E000836A846A33C023F0ABEC00F0836E100E98
:0A01F000806EA1EC00F0806A12009E
:020000040030CA :020000040030CA
:04000000000C1F1EB3 :04000000000C1F1EB3
:02000500038175 :020005008381F5
:060008000FC00FE00F40E5 :060008000FC00FE00F40E5
:00000001FF :00000001FF

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cuenta/main.lst
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32
interrupt/Makefile Executable file
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@ -0,0 +1,32 @@
# My pic workflow makefile by Fernando R Jacobo
# Dependencies
# SDCC Small Device C Compiler
# pk2cmd for pickit pic programmers
# C compiler variables
SRC=*.c
CC=sdcc
FAMILY=pic16
PROC=18f4550
# ASM and program variables
PPROC=PIC18F4550
ASMPROC=18F4550
all: $(SRC:.c=.hex)
comp: $(SRC)
$(CC) --use-non-free -m$(FAMILY) -p$(PROC) $^
clean:
rm -f $(SRC:.c=.asm) $(SRC:.c=.cod) $(SRC:.c=.hex) $(SRC:.c=.lst) $(SRC:.c=.o)
program:
pk2cmd -M -P${PPROC} -Fmain.hex
asm: *.asm
gpasm -p ${ASMPROC} -o main.hex $^
asmp: asm program
.PHONY: all clean

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interrupt/main.asm Normal file
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@ -0,0 +1,64 @@
LIST P=18F4550
#include <P18F4550.inc>
CONFIG FOSC = HS ; Use internal oscillator, RA6 as clock output
CONFIG WDT = OFF ; Watchdog Timer off
CONFIG LVP = OFF ; Low-Voltage Programming off
CONFIG MCLRE = ON ; MCLR pin disabled, RE3 input enabled
ORG 0x00
GOTO INIT
ORG 0x08 ; Interrupt vector for high-priority interrupts
GOTO ISR ; Jump to Interrupt Service Routine
INIT:
; === Configure RB4-RB7 as Input ===
movlw 0xff
movwf TRISB
clrf TRISD
clrf LATD
movlw 0x0f
movwf ADCON1
; === Enable RB Port Change Interrupt ===
BCF INTCON2, RBPU ; Enable PORTB pull-ups
BSF INTCON2, 0 ; Set interrupt on high priority RBIP
BSF INTCON, RBIE ; Enable RB Port Change Interrupt
BSF INTCON, GIE ; Enable Global Interrupts
BSF INTCON, PEIE ; Enable Peripheral Interrupts
;BSF INTCON2, 6
; INT0
BSF INTCON, INT0IE
BSF INTCON2, INTEDG0
BSF INTCON, INT1IE
BSF INTCON2, INTEDG1
MAIN_LOOP:
;MOVFF PORTB, PORTD
GOTO MAIN_LOOP ; Stay in loop, wait for interrupts
; === Interrupt Service Routine ===
ISR:
BTFSS INTCON, RBIF ; Check if RB Change interrupt occurred
RETFIE ; Return if not triggered
;BTFSS INTCON, INT0IF
;RETFIE
MOVF PORTB, W ; Read PORTB (necessary to clear mismatch condition)
NOP
NOP
NOP
NOP
; === Your Custom Interrupt Handling Code ===
; Example: Toggle PORTD on RB change
;BTG PORTD, 0
MOVFF PORTB, PORTD
BCF INTCON, RBIF ; Clear the RBIF flag
BCF INTCON, INT0IF
RETFIE ; Return from interrupt
END

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interrupt/main.hex Normal file
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@ -0,0 +1,12 @@
:020000040000FA
:0400000006EF00F017
:0800080019EF00F0FF0E936EEA
:10001000956A8C6A0F0EC16EF19EF180F286F28EA7
:10002000F28CF288F18CF286F18A81CF83FF15EF92
:1000300000F0F2A01000815000000000000000005D
:0A00400081CF83FFF290F2921000CE
:020000040030CA
:04000000000C1F1EB3
:020005008381F5
:060008000FC00FE00F40E5
:00000001FF

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menu_rota/main.cod
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menu_rota/main.lst
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sequence/main.cod
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sequence/main.lst
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22
test/Makefile
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@ -1,9 +1,17 @@
SRC=*.c # My pic workflow makefile by Fernando R Jacobo
# Dependencies
# SDCC Small Device C Compiler
# pk2cmd for pickit pic programmers
# C compiler variables
SRC=*.c
CC=sdcc CC=sdcc
FAMILY=pic16 FAMILY=pic16
PROC=18f4550 PROC=18f4550
HEX:=main.hex
# ASM and program variables
PPROC=PIC18F4550
ASMPROC=18F4550
all: $(SRC:.c=.hex) all: $(SRC:.c=.hex)
@ -13,10 +21,12 @@ comp: $(SRC)
clean: clean:
rm -f $(SRC:.c=.asm) $(SRC:.c=.cod) $(SRC:.c=.hex) $(SRC:.c=.lst) $(SRC:.c=.o) rm -f $(SRC:.c=.asm) $(SRC:.c=.cod) $(SRC:.c=.hex) $(SRC:.c=.lst) $(SRC:.c=.o)
asm: *.asm program:
gpasm -p 18F4550 -o main.hex $^ pk2cmd -M -P${PPROC} -Fmain.hex
program: ${HEX} asm: *.asm
pk2cmd -M -PPIC18F4550 -F${HEX} gpasm -p ${ASMPROC} -o main.hex $^
asmp: asm program
.PHONY: all clean .PHONY: all clean

15
test/main.asm
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@ -5,7 +5,7 @@ LIST P=18F4550, F=INHX32 ; Specify processor and hex format
CONFIG FOSC = HS ; Use internal oscillator, RA6 as clock output CONFIG FOSC = HS ; Use internal oscillator, RA6 as clock output
CONFIG WDT = OFF ; Watchdog Timer off CONFIG WDT = OFF ; Watchdog Timer off
CONFIG LVP = OFF ; Low-Voltage Programming off CONFIG LVP = OFF ; Low-Voltage Programming off
;CONFIG MCLRE = OFF ; MCLR pin disabled, RE3 input enabled CONFIG MCLRE = OFF ; MCLR pin disabled, RE3 input enabled
R1 EQU 0x020 R1 EQU 0x020
R2 EQU 0x021 R2 EQU 0x021
@ -24,7 +24,18 @@ Start:
MOVWF TRISB MOVWF TRISB
loop: loop:
movff PORTB, PORTD movlw 0xff
addwf PORTB
btfsc STATUS, 0
goto on
goto off
on:
movlw 0x01
movwf PORTD
goto loop
off:
movlw 0x00
movwf PORTD
goto loop goto loop
END ; End of program END ; End of program

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test/main.hex
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@ -1,8 +1,9 @@
:020000040000FA :020000040000FA
:10000000956A8C6A8A6AF19E0F0EC16EFF0E936E1E :10000000956A8C6A8A6AF19E0F0EC16EFF0E936E1E
:0800100081CF83FF08EF00F02F :10001000FF0E8126D8B00FEF00F013EF00F0010EB5
:0E002000836E08EF00F0000E836E08EF00F014
:020000040030CA :020000040030CA
:04000000000C1F1EB3 :04000000000C1F1EB3
:020005008381F5 :02000500038175
:060008000FC00FE00F40E5 :060008000FC00FE00F40E5
:00000001FF :00000001FF

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test/main.lst
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