ATmega2560 support #4

zevero · 2015-11-05T09:41:37Z

We are looking for someone looking deeper into ATmega2560 support!

This is copied from @per1234 in Issue #1

I managed to get the ATmega2560 to load a program from the SD card but it's far from ideal. I discovered the program will run under these circumstances:

Set high fuse to DB instead of DA to disable the Boot Reset vector(BOOTRST=1).
- The standard Arduino boards.txt enables the Boot Reset vector(BOOTRST=0) as does your hfuse setting in README.md.
Use Atmel AVRISP mkII to Burn Bootloader instead of USPasp.
- I normally use my USBasp due to the mkII not working correctly for Burn Bootloader with current versions of Arduino IDE for me without some ugly workarounds.
Press the reset button after powering the board with the SD card attached.
- The program has been loaded into the MCU flash but doesn't run until the reset button is pressed. With the other boards the program begins to run immediately after it has been loaded from the SD card.

After the program has been loaded from the SD no other programs will load from the SD card until the bootloader is burned again. If I change any of the above conditions it doesn't work. With all of these conditions it works consistently. I have no idea what this means, it's a bit more advanced than my current skill level.

JaspaJami · 2016-04-19T06:16:41Z

Any news on this one?

zevero · 2016-04-19T06:34:25Z

Any help in this issue is welcome.

JaspaJami · 2016-04-19T07:32:25Z

Most likely im not able to help, but lets see when i have time to try it in 2560.

per1234 · 2016-08-13T10:41:33Z

I did more testing of avr_boot on ATmega2560:

Programmer(firmware)	6.0.1/DA	6.0.1/DB	6.3.0/DA	6.3.0/DB
AVRISP mkII, USBasp(1.06, 1.05, 1.04)	no	yes	no	yes
Atmel USBasp(Baite)	no	no	no	no
AVRISP mkII	no	yes	no	yes
Arduino as ISP	no	no	no	yes

Defininitions:

6.0.1: avrdude 6.0.1-arduino5(included with Arduino AVR Boards 1.6.11 and previous)
6.3.0: avrdude 6.3.0-arduino2(included with Arduino AVR Boards 1.6.12)
DA: high_fuses=0xDA
DB: high_fuses=0xDB
USBasp 1.06: PeterVH/bperrybap's v1.06-alpha-2016-05-18 USBasp firmware.
USBasp 1.05: PeterVH's 1.05 USBasp firmware.
USBasp 1.04: fischl's v1.04 USBasp firmware.
USBasp Baite: Stock firmware on the Baite USBasp clones. EDIT: this is the USBasp firmware version I used for my previous testing.
no: Program never runs.
yes: Burn Bootloader, start with SD card, press reset, program runs, no other programs will load from SD card until you burn bootloader again.

I also tried the "with_bootloader" hex file generated by Sketch > Export Compiled Binary with the same results.

My suspicion is that with the high_fuses=0xDB seeting the bootloader gets overwritten by the program from the SD card and this is why no further programs can be loaded from the SD card. I have seen somewhat similar things happen with ATmega2560 using Arduino as ISP+avrdude 6.0.1-arduino5 or USBasp firmwares other than 1.05 and 1.06 on avrdude 6.0.1-arduino5 and 6.3.0-arduino2. If you do an Upload Using Programmer with either of those programmers on an ATmega2560 with the standard high_fuses value of 0xD8 the program never runs. If you change the high_fuses value to 0xD9 then the program does run after Upload Using Programmer but if you Burn Bootloader and then do an upload over serial the bootloader is overwritten and you can't do any more serial uploads until you Burn Bootloader again.
More information on both these issues at:
https://github.com/arduino/Arduino/issues/388.
Details on the USBasp issue at:
https://petervanhoyweghen.wordpress.com/2015/12/02/the-usbasp-and-atmega2560-mystery.
Details on the Arduino as ISP issue at:
https://petervanhoyweghen.wordpress.com/2015/07/21/arduinoisp-reliability-and-portability-improvements.

Note: I have found the proper fix for the issue I was having with using AVRISP mkII and Windows during my original testing in November, 2015 and it was working 100% correctly for this round of testing.

hassin23ayz · 2017-09-09T10:52:26Z

hello ..

i have succeeded with atmega2560

before calling the 0x0000 . you need to clear the EIND register for the extended memory addressing

EIND = 0;

this was suggested here https://www.mikrocontroller.net/articles/AVR_Bootloader_in_C_-_eine_einfache_Anleitung

kawasakizx10rr · 2018-08-24T22:13:15Z

please may you share the working version for a Mega2560 hassin23ayz, I beg you.

shiryaevartyom · 2018-09-13T09:13:16Z

before calling the 0x0000 . you need to clear the EIND register for the extended memory addressing
EIND = 0;

@hassin23ayz Please tell me more how to do this?
I'm watching the link
AVR_Bootloader_in_C_-_eine_einfache_Anleitung Schritt_3
But I do not understand where to insert EIND = 0;
do I need to write / add to a file? which file?
Please, compile and post file of the bootloader like atmega2560_cs11_16000000L.hex for upload in 2560

avrdude -c avrisp2 -p m2560 -P usb -e -u -F -U lock:w:0x3f:m -U efuse:w:0x05:m -U hfuse:w:0xDE:m -U lfuse:w:0xFF:m
avrdude  -c avrisp2 -p 2560 -P usb -b 115200 -U flash:w:atmega2560_cs11_16000000L.hex -U lock:w:0x2f:m

ferhate · 2018-10-19T11:52:48Z

You must change "main.c" file.

diff -r master/main.c atmega2560/main.c
247c247,250
< 		if (pgm_read_word(0) != 0xFFFF) ((void(*)(void))0)();	  //EXIT BOOTLOADER
---
> 		if (pgm_read_word(0) != 0xFFFF) {
> 			EIND = 0;
> 			((void(*)(void))0)();	//EXIT BOOTLOADER
> 		}

If you need the compiled hex file, please let me know.

litlbigchickn · 2018-10-26T15:35:30Z

Hi Ferhate

I have been fiddling with the SD bootloader for 2560 since yesterday. I may just have gotten it to work a few moments ago. But if you could put up your (assuming you have AS7) version AS7 project with it - I would appreciate and reciprocate when and if my version gets to work - I am sanitizing mine removing the LED and Serial debug.

For some reason I had great difficulty getting the assembly file accepted in the project.

tech-shubham · 2018-11-15T19:26:59Z

@ferhate or @litlbigchickn

It will be appreciated if one of you can provide compiled hex file for Atmega2560 working bootloader.

Also I have an another question, is it possible to flash a program directly Atmega2560 using Bluetooth module (BLE).

ferhate · 2018-11-19T09:49:04Z

I've forked the repository and created a branch for ATmega2560 support.
https://github.com/ferhate/avr_boot/tree/atmega2560

@litlbigchickn
For a working version for ATmega2560, please see the following commit: ferhate@f97d496

For AS7 project files, please see the following commit: ferhate@8436143

@tech-shubham
For compiled HEX files, please see build directory:
https://github.com/ferhate/avr_boot/tree/atmega2560/build

tech-shubham · 2018-11-23T09:26:39Z

@ferhate
Thanks a lot, It worked well.
Also, I want to know is there some method I can serially Flash program directly into the ATmega2560 Flash memory.
My case is:
I am using HM10 BLE for communication between Mobile and my controller ATMega2560. Now I want to Flash a new program directly from Bluetooth to Flash memory.

alisyd · 2023-10-06T20:35:03Z

I've forked the repository and created a branch for ATmega2560 support. https://github.com/ferhate/avr_boot/tree/atmega2560

@litlbigchickn For a working version for ATmega2560, please see the following commit: ferhate@f97d496

For AS7 project files, please see the following commit: ferhate@8436143

@tech-shubham For compiled HEX files, please see build directory: https://github.com/ferhate/avr_boot/tree/atmega2560/build

Hello there! I am able to burn the bootloader but I cannot get it to boot from the SD card, I have put FIRMWARE.BIN on the SD card and I would want to know if there is something else I should be doing.

ferhate · 2023-10-14T17:04:46Z

I've forked the repository and created a branch for ATmega2560 support. https://github.com/ferhate/avr_boot/tree/atmega2560
@litlbigchickn For a working version for ATmega2560, please see the following commit: ferhate@f97d496
For AS7 project files, please see the following commit: ferhate@8436143
@tech-shubham For compiled HEX files, please see build directory: https://github.com/ferhate/avr_boot/tree/atmega2560/build

Hello there! I am able to burn the bootloader but I cannot get it to boot from the SD card, I have put FIRMWARE.BIN on the SD card and I would want to know if there is something else I should be doing.

You should check the readme file.
https://github.com/zevero/avr_boot#put-your-sketch-on-sd-card

The common problem is the file system of SD card. The bootloader only supports FAT16/FAT32.

litlbigchickn · 2023-10-14T17:14:55Z

Hi I have gotten everything to work just fine. I have made a packet firmware update system for nrf905 using the information from the bootloader you made (not much left :-)) Unfortunately it is too long ago to remember what was the problem. I made it work for arduino and AS7. Yours sincerely Nicolai Mathiasen

…

On Sat, 14 Oct 2023 at 19:04, Ferhat Elmasgüneş ***@***.***> wrote: I've forked the repository and created a branch for ATmega2560 support. https://github.com/ferhate/avr_boot/tree/atmega2560 @litlbigchickn <https://github.com/litlbigchickn> For a working version for ATmega2560, please see the following commit: ***@***.*** <ferhate@f97d496> For AS7 project files, please see the following commit: ***@***.*** <ferhate@8436143> @tech-shubham <https://github.com/tech-shubham> For compiled HEX files, please see build directory: https://github.com/ferhate/avr_boot/tree/atmega2560/build Hello there! I am able to burn the bootloader but I cannot get it to boot from the SD card, I have put FIRMWARE.BIN on the SD card and I would want to know if there is something else I should be doing. You should check the readme file. https://github.com/zevero/avr_boot#put-your-sketch-on-sd-card The common problem is the file system of SD card. The bootloader only supports FAT16/FAT32. — Reply to this email directly, view it on GitHub <#4 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AKTRJ73H4XWZNHRYDZSCZ3DX7LA3VAVCNFSM4BTR2P5KU5DIOJSWCZC7NNSXTN2JONZXKZKDN5WW2ZLOOQ5TCNZWGMYDKMBRGY2A> . You are receiving this because you were mentioned.Message ID: ***@***.***>

-- Mvh./B.G. Universal Safety Systems - Scaffold Division Senior Engineer Nicolai Mathiasen Dir. tel. +45 422-96-224

alisyd · 2023-10-14T21:54:53Z

I've forked the repository and created a branch for ATmega2560 support. https://github.com/ferhate/avr_boot/tree/atmega2560
@litlbigchickn For a working version for ATmega2560, please see the following commit: ferhate@f97d496
For AS7 project files, please see the following commit: ferhate@8436143
@tech-shubham For compiled HEX files, please see build directory: https://github.com/ferhate/avr_boot/tree/atmega2560/build

Hello there! I am able to burn the bootloader but I cannot get it to boot from the SD card, I have put FIRMWARE.BIN on the SD card and I would want to know if there is something else I should be doing.

You should check the readme file. https://github.com/zevero/avr_boot#put-your-sketch-on-sd-card

The common problem is the file system of SD card. The bootloader only supports FAT16/FAT32.

Thanks! it works, but do you think is there a way I can trigger a software reset, jump to bootloader from software, enabling the watchdog timer does not trigger boot from sd. Any help is much appreciated

zevero added the help wanted label Nov 5, 2015

per1234 mentioned this issue May 2, 2017

Experimental serial support for atmega 328p #24

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ATmega2560 support #4

ATmega2560 support #4

zevero commented Nov 5, 2015

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alisyd commented Oct 14, 2023

ATmega2560 support #4

ATmega2560 support #4

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zevero commented Nov 5, 2015

JaspaJami commented Apr 19, 2016

zevero commented Apr 19, 2016

JaspaJami commented Apr 19, 2016

per1234 commented Aug 13, 2016 • edited Loading

hassin23ayz commented Sep 9, 2017

kawasakizx10rr commented Aug 24, 2018

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