diff options
Diffstat (limited to 'asm/dht11')
| -rwxr-xr-x | asm/dht11/avrdasm | 2 | ||||
| -rw-r--r-- | asm/dht11/blink.s | 71 | ||||
| -rw-r--r-- | asm/dht11/dat.h | 25 | ||||
| -rw-r--r-- | asm/dht11/link.ld | 34 | ||||
| -rw-r--r-- | asm/dht11/makefile | 19 |
5 files changed, 151 insertions, 0 deletions
diff --git a/asm/dht11/avrdasm b/asm/dht11/avrdasm new file mode 100755 index 0000000..ea0707b --- /dev/null +++ b/asm/dht11/avrdasm @@ -0,0 +1,2 @@ +#!/bin/sh +avr-objdump -D *.elf diff --git a/asm/dht11/blink.s b/asm/dht11/blink.s new file mode 100644 index 0000000..5fe337f --- /dev/null +++ b/asm/dht11/blink.s @@ -0,0 +1,71 @@ +.include "dat.h" + +vectors: + jmp start + jmp badirq ; IRQ0 + jmp badirq ; IRQ1 + jmp badirq ; PCINT0 + jmp badirq ; PCINT1 + jmp badirq ; PCINT2 + jmp badirq ; Watchdog Timeout + jmp badirq ; Timer2 CompareA + jmp badirq ; Timer2 CompareB + jmp badirq ; Timer2 Overflow + jmp badirq ; Timer1 Capture + jmp badirq ; Timer1 CompareA + jmp badirq ; Timer1 CompareB + jmp badirq ; Timer1 Overflow + jmp badirq ; Timer0 CompareA + jmp badirq ; Timer0 CompareB + jmp badirq ; Timer0 Overflow + jmp badirq ; SPI Transfer Complete + jmp badirq ; USART RX Complete + jmp badirq ; USART UDR Empty + jmp badirq ; USART TX Complete + jmp badirq ; ADC Conversion Complete + jmp badirq ; EEPROM Ready + jmp badirq ; Analog Comparator + jmp badirq ; 2-wire Serial + jmp badirq ; SPM Ready + +start: + eor r1, r1 + out SREG, r1 + ldi r28, 0xff + ldi r29, 0x8 + out SPL, r28 + out SPH, r29 + call main +halt: + rjmp halt + +badirq: + jmp vectors + +.globl delayloop +delayloop: + ldi r18, 82 + ldi r19, 43 + ldi r20, 0 +l1: + dec r20 + brne l1 + dec r19 + brne l1 + dec r18 + brne l1 + ret + +.globl main +main: + ldi r16, 1<<DDRB4|1<<DDRB5 + ldi r17, 0<<PORTB4|0<<PORTB5 + out DDRB, r16 + out PORTB, r17 +∞: + call delayloop + in r17, PORTB + com r17 + ;andi r17, 1<<PORTB4 + out PORTB, r17 + rjmp ∞ diff --git a/asm/dht11/dat.h b/asm/dht11/dat.h new file mode 100644 index 0000000..5aed9cc --- /dev/null +++ b/asm/dht11/dat.h @@ -0,0 +1,25 @@ +/* Data Registers */ +.equ PORTB, 0x05 +.equ PORTB0, 0 +.equ PORTB1, 1 +.equ PORTB2, 2 +.equ PORTB3, 3 +.equ PORTB4, 4 +.equ PORTB5, 5 +.equ PORTB6, 6 +.equ PORTB7, 7 +/* Data Direction Registers */ +.equ DDRB, 0x04 +.equ DDRB0, 0 +.equ DDRB1, 1 +.equ DDRB2, 2 +.equ DDRB3, 3 +.equ DDRB4, 4 +.equ DDRB5, 5 +.equ DDRB6, 6 +.equ DDRB7, 7 +/* Stack */ +.equ SPL, 0x3d +.equ SPH, 0x3e +/* Status Register */ +.equ SREG, 0x3f diff --git a/asm/dht11/link.ld b/asm/dht11/link.ld new file mode 100644 index 0000000..0e8fb64 --- /dev/null +++ b/asm/dht11/link.ld @@ -0,0 +1,34 @@ +OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr") +OUTPUT_ARCH(avr:5) +MEMORY +{ + text (rx) : ORIGIN = 0, LENGTH = 32K + data (rw!x) : ORIGIN = 0x800100, LENGTH = 2303 + eeprom (rw!x) : ORIGIN = 0x800900, LENGTH = 1K +} +SECTIONS +{ + .text : + { + *(.vectors) + *(.text) + _etext = .; + } >text + .data : + { + *(.data) + . = ALIGN(2); + _edata = . ; + } >data AT>text + .bss ADDR(.data) + SIZEOF (.data) : AT (ADDR (.bss)) + { + *(.bss) + *(COMMON) + . = ALIGN(2); + } >data + .eeprom : + { + *(.eeprom*) + } >eeprom + _end = .; +} diff --git a/asm/dht11/makefile b/asm/dht11/makefile new file mode 100644 index 0000000..063bd39 --- /dev/null +++ b/asm/dht11/makefile @@ -0,0 +1,19 @@ +AS=avr-as +LD=avr-ld +LDSCRIPT=link.ld + +PORT=/dev/ttyACM0 +TARG=blink + +all: build + +build: + $(AS) -mmcu=atmega328p -c -o $(TARG).o $(TARG).s + $(LD) -T$(LDSCRIPT) -o $(TARG).elf $(TARG).o + avr-objcopy -j .text -j .data -O ihex $(TARG).elf $(TARG).hex + +burn: + avrdude -v -p atmega328p -c arduino -P $(PORT) -b 115200 -D -U flash:w:$(TARG).hex + +clean: + rm -f $(TARG).elf $(TARG).o $(TARG).hex |