main.c
#include <avr/io.h> #include <util/delay.h> int main(void) { DDRB = 0x02; while (1) { PORTB = 0x02; _delay_ms(500); PORTB = 0x00; _delay_ms(500); } return 0; }
Makefile
unexport LD_PRELOAD export LD_LIBRARY_PATH:=$(LD_LIBRARY_PATH):/data/data/com.termux/files/usr/libexec/gcc/avr/4.8/ all: avr-gcc -Wall -Os -DF_CPU=1000000 -mmcu=attiny85 -o main.o main.c avr-objcopy -j .text -j .data -O ihex main.o main.hex flash: avrdude -vv -c usbasp -p t85 -U flash:w:main.hex:i clean: rm -rf main.o main.hex
編譯
$ make avr-gcc -Wall -Os -DF_CPU=1000000 -mmcu=attiny85 -o main.o main.c WARNING: linker: /data/data/com.termux/files/usr/libexec/gcc/avr/4.8/libmpc.so.3: unused DT entry: type 0xf arg 0xbde WARNING: linker: /data/data/com.termux/files/usr/libexec/gcc/avr/4.8/libmpfr.so.4: unused DT entry: type 0xf arg 0x239e WARNING: linker: /data/data/com.termux/files/usr/libexec/gcc/avr/4.8/libmpfr.so.4: unused DT entry: type 0xf arg 0x239e avr-objcopy -j .text -j .data -O ihex main.o main.hex
接腳:
USB ISP | Attiny85 |
---|---|
VCC | 5V |
GND | GND |
RST | PB5 |
SCK | PB2 |
MISO | PB1 |
MOSI | PB0 |
燒錄
$ tsudo make flash avrdude -vv -c usbasp -p t85 -U flash:w:main.hex:i avrdude: Version 6.3, compiled on Nov 10 2018 at 22:02:45 Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/ Copyright (c) 2007-2014 Joerg Wunsch System wide configuration file is "/data/data/com.termux/files/usr/etc/avrdude.conf" User configuration file is "/data/data/com.termux/files/home/.avrduderc" User configuration file does not exist or is not a regular file, skipping Using Port : usb Using Programmer : usbasp avrdude: seen device from vendor ->www.fischl.de<- avrdude: seen product ->USBasp<- AVR Part : ATtiny85 Chip Erase delay : 4500 us PAGEL : P00 BS2 : P00 RESET disposition : possible i/o RETRY pulse : SCK serial program mode : yes parallel program mode : yes Timeout : 200 StabDelay : 100 CmdexeDelay : 25 SyncLoops : 32 ByteDelay : 0 PollIndex : 3 PollValue : 0x53 Memory Detail : Block Poll Page Polled Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- --------- eeprom 65 6 4 0 no 512 4 0 4000 4500 0xff 0xff flash 65 6 32 0 yes 8192 64 128 4500 4500 0xff 0xff signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00 lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00 lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00 hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00 efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00 calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00 Programmer Type : usbasp Description : USBasp, http://www.fischl.de/usbasp/ avrdude: auto set sck period (because given equals null) avrdude: AVR device initialized and ready to accept instructions Reading | | 0% 0.00s Reading | ################# | 33% 0.00s Reading | ################################# | 66% 0.01s Reading | ################################################## | 100% 0.01s avrdude: Device signature = 0x1e930b (probably t85) avrdude: safemode: hfuse reads as DD avrdude: safemode: efuse reads as FE avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed To disable this feature, specify the -D option. avrdude: erasing chip avrdude: auto set sck period (because given equals null) avrdude: reading input file "main.hex" avrdude: writing flash (98 bytes): Writing | | 0% 0.00s Writing | ######################### | 50% 0.10s Writing | ################################################## | 100% 0.19s avrdude: 98 bytes of flash written avrdude: verifying flash memory against main.hex: avrdude: load data flash data from input file main.hex: avrdude: input file main.hex contains 98 bytes avrdude: reading on-chip flash data: Reading | | 0% 0.00s Reading | ######################### | 50% 0.07s Reading | ################################################## | 100% 0.15s avrdude: verifying ... avrdude: 98 bytes of flash verified avrdude: safemode: hfuse reads as DD avrdude: safemode: efuse reads as FE avrdude: safemode: Fuses OK (E:FE, H:DD, L:E1) avrdude done. Thank you.
完成