Right to Repair
Pickit2 - AVR
Using PicKit2 Programmer to program Atmel's microcontrollers
Many hobbists are familiar with Arduino IDE, which can programm a series of microcontrollers. If you are using atmel chips, even blank or you managed to brick one like I did, with one ATmega32u4, then you realise that is the last one, and you need to test the firmware, or you have a new project with a brand new blank chip then we need to flash the propper bootloader / firmware on. In case of arduino kists, many flavors of mcu are used, all are under same spell, they need a programmer, but we have one, true not for the same familly of mcus, the question is :
Can we use PICKit2 to program atmel chips?
The answer is : Sure we can! Here is how:
The programmer we have, we need a peace of software to use the programmer and send the flash to the mcu, we will use avrdude, you can get it free of charge from the github repository avrdude:
The pin connections:
| AVR - PICKit2 (pin): |
|---|
| RST - VPP/MCLR (1) |
| VDD - VDD Target (2) -- optional if AVR self powered |
| GND - GND (3) |
| MISO - PGD (4) |
| SCLK - PDC (5) |
| MOSI - AUX (6) |
Some of command examples are shown below:
To write our firmware to the flash in AtMega 328p:
$ avrdude -c pickit2 -p m328p -v -V -U flash:w:"myfirmware.hex":a
To unbrick the ATmega32u4 :
$ avrdude -c pickit2 -p m32u4 -v -V -U flash:w:"path/to/hex/micropro.hex":a
To upload bootloader (e.g. to upload ARDUINO bootloader):
$ avrdude -c pickit2 -p m328p -v -V -U boot:w:"boot.hex":a
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