attiny85_blink
说明： Digispark（ATtiny85）裸机编程，使用树莓Pi 4，
(Digispark (ATtiny85) bare metal programming with Raspberry Pi 4,)
(Digispark (ATtiny85) bare metal programming with Raspberry Pi 4,)
文件列表:
Makefile (837, 2023-10-20)
blink.c (1455, 2023-10-20)
blink.c (1455, 2023-10-20)
# Digispark (ATtiny85) Flashing with rpi 4 GPIO
## Connect Raspberry Pi 4 to Digispark:
### Digispark pinout
### Raspberry Pi 4 GPIO pinout
### rpi 4 GPIO to Digispark connection
(You don't need to reboot your Raspberry Pi) ## Install Flashing Software `sudo apt-get install bison automake autoconf flex git gcc`\ `sudo apt-get install gcc-avr binutils-avr avr-libc`
`cd ~`\ `git clone https://github.com/kcuzner/avrdude`\ `cd avrdude/avrdude`\ `./bootstrap && ./configure && sudo make install`
`cd ~`\ `git clone https://github.com/WiringPi/WiringPi`\ `cd WiringPi`\ `./build`
## Flashing Digispark with LED blink program `cd ~`\ `git clone https://github.com/edvirs/attiny85_blink`\ `cd attiny85_blink`
#### To flash, simply use this line: `make install` #### The output should look like this: ``` /usr/bin/avr-gcc -g -Os -Wall -mcall-prologues -mmcu=attiny85 blink.c -o blink /usr/bin/avr-objcopy -R .eeprom -O ihex blink blink.hex rm -f blink sudo gpio -g mode 22 out sudo gpio -g write 22 0 sudo /usr/local/bin/avrdude -p t85 -P /dev/spidev0.0 -c linuxspi -b 10000 -U flash:w:blink.hex avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.01s avrdude: Device signature = 0x1e930b 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: reading input file "blink.hex" avrdude: input file blink.hex auto detected as Intel Hex avrdude: writing flash (144 bytes): Writing | ################################################## | 100% 0.56s avrdude: 144 bytes of flash written avrdude: verifying flash memory against blink.hex: avrdude: load data flash data from input file blink.hex: avrdude: input file blink.hex auto detected as Intel Hex avrdude: input file blink.hex contains 144 bytes avrdude: reading on-chip flash data: Reading | ################################################## | 100% 0.53s avrdude: verifying ... avrdude: 144 bytes of flash verified avrdude: safemode: Fuses OK (E:FE, H:DF, L:F1) avrdude done. Thank you. sudo gpio -g write 22 1 ``` #### And the LED should blink every 250ms Obviously, you can write your own C code for ATtiny85 and flash it,\ just don't forger to change the TARGET variable in the Makefile ## Resources: * [Programming the ATtiny85 From Raspberry Pi](https://www.instructables.com/Programming-the-ATtiny85-from-Raspberry-Pi/) * [Bare Metal Programming: ATtiny85](https://medium.com/@bradford_hamilton/bare-metal-programming-attiny85-22be36f4e9ca) * [Atmel ATtiny25, ATtiny45, ATtiny85 Datasheet](https://ww1.microchip.com/downloads/en/devicedoc/atmel-2586-avr-8-bit-microcontroller-attiny25-attiny45-attiny85_datasheet.pdf)
### Raspberry Pi 4 GPIO pinout
### rpi 4 GPIO to Digispark connection
pin 4 (5V) > 5V
pin 6 (GND) > GND
pin 15 (GPIO 22) > PB5
pin 19 (MOSI) > PB0
pin 21 (MISO) > PB1
pin 23 (SCLK) > PB2
(You don't need to reboot your Raspberry Pi) ## Install Flashing Software `sudo apt-get install bison automake autoconf flex git gcc`\ `sudo apt-get install gcc-avr binutils-avr avr-libc`
`cd ~`\ `git clone https://github.com/kcuzner/avrdude`\ `cd avrdude/avrdude`\ `./bootstrap && ./configure && sudo make install`
`cd ~`\ `git clone https://github.com/WiringPi/WiringPi`\ `cd WiringPi`\ `./build`
## Flashing Digispark with LED blink program `cd ~`\ `git clone https://github.com/edvirs/attiny85_blink`\ `cd attiny85_blink`
#### To flash, simply use this line: `make install` #### The output should look like this: ``` /usr/bin/avr-gcc -g -Os -Wall -mcall-prologues -mmcu=attiny85 blink.c -o blink /usr/bin/avr-objcopy -R .eeprom -O ihex blink blink.hex rm -f blink sudo gpio -g mode 22 out sudo gpio -g write 22 0 sudo /usr/local/bin/avrdude -p t85 -P /dev/spidev0.0 -c linuxspi -b 10000 -U flash:w:blink.hex avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.01s avrdude: Device signature = 0x1e930b 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: reading input file "blink.hex" avrdude: input file blink.hex auto detected as Intel Hex avrdude: writing flash (144 bytes): Writing | ################################################## | 100% 0.56s avrdude: 144 bytes of flash written avrdude: verifying flash memory against blink.hex: avrdude: load data flash data from input file blink.hex: avrdude: input file blink.hex auto detected as Intel Hex avrdude: input file blink.hex contains 144 bytes avrdude: reading on-chip flash data: Reading | ################################################## | 100% 0.53s avrdude: verifying ... avrdude: 144 bytes of flash verified avrdude: safemode: Fuses OK (E:FE, H:DF, L:F1) avrdude done. Thank you. sudo gpio -g write 22 1 ``` #### And the LED should blink every 250ms Obviously, you can write your own C code for ATtiny85 and flash it,\ just don't forger to change the TARGET variable in the Makefile ## Resources: * [Programming the ATtiny85 From Raspberry Pi](https://www.instructables.com/Programming-the-ATtiny85-from-Raspberry-Pi/) * [Bare Metal Programming: ATtiny85](https://medium.com/@bradford_hamilton/bare-metal-programming-attiny85-22be36f4e9ca) * [Atmel ATtiny25, ATtiny45, ATtiny85 Datasheet](https://ww1.microchip.com/downloads/en/devicedoc/atmel-2586-avr-8-bit-microcontroller-attiny25-attiny45-attiny85_datasheet.pdf)
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