#ARDUINO MEGA 2560 PINOUT FULL#
#ARDUINO MEGA 2560 PINOUT CODE#

when using the AVR Dragon you have to export AVR_DEBUGDEVICE=-dragon. Make BOARD=arduino-mega2560 PROGRAMMER=dragon_isp clean all flash debug Note If you are using a different debugger than the Atmel-ICE, you have to export the AVR_DEBUGDEVICE environment variable to the required flag to pass to AVaRICE, e.g.

#ARDUINO MEGA 2560 PINOUT FULL#

For a full rebuild and debug cycle use the following command: Note:** To flash the board via the ISP while debugging the additional flag PROGRAMMER=dragon_isp is required. Make BOARD=arduino-mega2560 debug: starts an avarice server and connects avr-gdb to it. Make BOARD=arduino-mega2560 debug-server: starts an avarice (avarice needs to be installed) server that avr-gdb can connect to. (Both OCDEN and JTAGEN fuse bits are enabled)Īvrdude arguments: -U lfuse:w:0xff:m -U hfuse:w:0x18:m -U efuse:w:0xfd:mĪ useful tool to calculate fuse settings yourself is this fuse calculator, which also works with other AVR MCUs.

All other JTAG Pins are not needed for debugging the Arduino Mega2560Īdditional information can be found here.Īvrdude arguments: -U lfuse:w:0xff:m -U hfuse:w:0xD8:m -U efuse:w:0xfd:m JTAG2 and JTAG10 on the AVR Dragon are both GND, one connection suffices. Connecting the JTAG header needs the following pin mapping: AVR DragonĪx refers to the analog in pins on the Arduino Mega 2560. In contrast to normal use (USB only), for debugging there are two separate wiring changes to do: connecting the ISP headers connecting the JTAG header to the respective pins on the ArduinoĬonnecting the ISP headers is straight forward: Pin1 on the Dragon connects to Pin1 on the Arduino Mega2560 and so on. this one restore the fuses to the default state. This isn't an issue because all of the afore mentioned devices have ISP capabilities, but it requires some additional steps to get back normal operation after debugging: flash a new arduino bootloader on the device, e.g. Because of that it is a necessity to use an ISP (in system programmer) to do the debugging. Additionally it seems to be required to overwrite the bootloader on the MCU. Important:** To use a JTAG Debugger in conjunction with the ATmega2560 it is required to change the fuses of the MCU. I tested debugging RIOT on the Arduino Mega 2560 using an AVR Dragon. There may be other options as well, but I can't comment on how well they work. AVR Dragon (Note: This debugger is out of production.) AVR JTAGICE mkII JTAGICE3 There are several options for this MCU/board: Atmel-ICE (Note: A version of the Atmel-ICE without case (just the naked but fully assembled PCB) is currently the most affordable option. To use the JTAG debugging on the Arduino Mega 2560 an external JTAG debugger is required. The ATmega2560 MCU supports JTAG debugging.

More pins can be used for hardware interrupts using the Pin Change Interrupt feature.

#ARDUINO MEGA 2560 PINOUT CODE#

We use the open avrdude tool to write the new code into the ATmega2560's flash After flashing RIOT you can without any intermediate steps just go over to flashing Arduino sketches again.įlashing RIOT on the Arduino Mega2560 is quite straight forward, just connect your Arduino Mega2560 using the programming port to your host computer and type: NOTE: In case you are wondering if flashing RIOT on your Arduino Mega2560 will overwrite the Arduino bootloader: you can be reassured. It is like many Arduinos extensible by using shields. It is based on Atmel's AVR architecture and sports an ATmega2560 MCU. The Arduino Mega2560 is one of the larger Arduino boards.

Arduino mega 2560 pinout