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2boots: Arduino/AVR serial and SD card bootloader

Posted on Tuesday, April 3rd, 2012 in Arduino, AVR by DP

Martin tipped us off to an AVR/Arduino¬† serial and mmc/SD card bootlaoder. It was designed to fit the same 2kb memory area that the usual Arduino booloader fits into, but can load firmware from an SD card too. Very useful for on “in the field” programing.

This is a proof-of-concept dual bootloader for Atmel AVR atmega chips. It combines a serial bootloader and a mmc/sd card based one in the same 2kb of flash memory that is normally used by the arduino serial loader alone.

You might ask Why? Well, I have quite a few arduino “in the field”. I can simply drag a .hex file to an SD card, insert it in an SD shield, and field-upgrade my boards without additional hardware. At the same time, I can connect the serial port and start developping with the normal Arduino IDE.

This entry was posted on Tuesday, April 3rd, 2012 at 9:00 pm and is filed under Arduino, AVR. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “2boots: Arduino/AVR serial and SD card bootloader”

  1. Martin says:

    Let me tip you off again :)

    Another Arduino bootloader, this time over TFTP

    https://github.com/mharizanov/arduino-netboot

    and a simpler version that doesn’t require the more complicated TFTP setting over BOOTP, rather configuring itself over EEPROM settings and acting as TFTP server to await firmware upload:

    https://github.com/mharizanov/TFTPBootloader_0_2

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