Mega1284P-Xplained

Support for the Mega1284P-Xplained board.

General information

The Mega1284P-Xplained is an evaluation kit by Atmel (now Microchip) for their ATmega1284P microcontroller.

Flash the board

  1. The board may be flashed through JTAG or using a SPI ISP programmer. If the Buspirate is being used, then make flash can be used to flash the board: 
    1
    make BOARD=mega-xplained -C examples/hello-world flash
  2. The default fuse settings must also be changed. If using the Buspirate: 
    1
2
3
    avrdude -p m1284p -c buspirate -P /dev/ttyUSB0 -U efuse:w:0xFF:m
avrdude -p m1284p -c buspirate -P /dev/ttyUSB0 -U hfuse:w:0x99:m
avrdude -p m1284p -c buspirate -P /dev/ttyUSB0 -U lfuse:w:0xE2:m
    WARNING: setting the fuses incorrectly can brick your board!

Accessing STDIO via UART

STDIO can be accessed through the USB connector. The on-board UART-USB adapter is not affected by flashing. It shows up as /dev/ttyACM0 on Linux. It will be used automatically with make term: 

1
make BOARD=mega-xplained -C examples/hello-world term