Been Busy

I’ve been quite busy with the old electronics recently. I got an ATtiny2313 and ATmega1284P sample from Atmel and flashed the arduino-tiny and mighty-1284p cores respectively using the updated arduino-mk v1.5 which now supports Arduino IDE 1.6.3

Here is the 1284 running “Blink”:

Here is the 2313 on a micro breadboard using only a resistor, LED and 5v/GND wires to run Blink:

The 2313 Makefile looks like:

ISP_PROG = usbasp
BOARD_TAG = attiny2313at1
ALTERNATE_CORE = tiny

include /usr/share/arduino/Arduino.mk

And we upload a sketch using “make ispload”.

Or if you want to install the Optiboot bootloader on the 1284P, the Makefile looks like:

BOARD_TAG         = mighty_opt
BOARDS_TXT        = $(HOME)/arduino/hardware/mighty-1284p/boards.txt
BOOTLOADER_PARENT = $(HOME)/arduino/hardware/mighty-1284p/bootloaders
BOOTLOADER_PATH   = optiboot
BOOTLOADER_FILE   = optiboot_atmega1284p.hex
ISP_PROG     	  = usbasp
AVRDUDE_OPTS 	  = -v

include /usr/share/arduino/Arduino.mk

We burn a bootloader (pretty pointless) using “make burn_bootloader”.

On the 1284P the ICSP pins are all down the left side near the top:

MOSI 6
MISO 7
SCK  8
RST  9
VCC 10
GND 11

It easiest just to use dupont cables from the USBASP to some breadboard.