Looking for firmware update over the air for AVR

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sherazi
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Posted by sherazi: Mon. May 19, 2014 - 02:17 PM
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I am looking for a fota solution for avr using gsm /gprs modem! I came across this video but I cant find anything else! I hope someone here can help me understanding it and finally doing it ! http://www.youtube.com/watch?v=I...

I am using the same modem !

Tags:

AVR Microcontrollers, megaAVR and tinyAVR, #Arduino #atmega2560, Electricity Meters, #Atmega #Atmega2560
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jccordill
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Posted by jccordill: Mon. May 19, 2014 - 02:49 PM
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I would think any serial port bootloader would work. Show us your code and explain what problem your having, our crystal balls are a bit fuzzy right now.
Or where you looking to hire someone to provide you with a ready made solution?

Jc

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stevech
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Posted by stevech: Tue. May 20, 2014 - 02:07 AM
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I did cellular remote firmware updates. Not with AVR... memory too small. My approach didn't download and store new in RAM or SD card. It was done in place, overwriting the previous firmware. If there was a disruption or power failure in the midst, the bootloader could detect a bad CRC and start anew. Used FTP.
All unattended.

A 128KB ARM, where the firmware was like 100KB and the special boot was about 8KB. Did my own FTP client, in C, so it could be more secure but not need SSL. Used Wiznet 812 for the IP stack. Ethernet connected to LAN or Cradlepoint router w/4G cellular USB modem.

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gchapman
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Posted by gchapman: Tue. May 20, 2014 - 07:14 AM
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sherazi wrote:
I am using the same modem !
SIM900 has HTTP therefore HTTP can be an alternative to SMS.
The Arduino GSM library is likely too much for a bootloader; could use the Atmel Serial Bootloader or another Over-The-Air-Update (OTAU) method.
IIRC, Atmel BitCloud has an OTAU; that wireless stack OTAU method can be used to give you a start for creating your own FOTA/OTAU method.
For HTTP, store the AVR application on your web server.
The SIM900 will be an HTTP client, connect to your web server, and HTTP GET the AVR firmware.

https://github.com/MarcoMartines/GSM-GPRS-GPS-Shield/blob/GSMSHIELD/inetGSM.h
https://github.com/MarcoMartines/GSM-GPRS-GPS-Shield
"GSM/GPRS & GPS Shield Library for modules using SIM900/SIM908"

GSM/GPRS & GPS shield for Arduino (Open Electronics, Store)
The GSM/GPRS & GPS Shield: some Http connections examples by Boris Landoni (Open Electronics; June 11, 2013)

Wireless > GSM/GPRS & WIFI > IComSat [ITEAD Studio, select the DOWNLOAD tab to see the datasheet and the AT command manual (that has an HTTP section)]
Wireless > GSM/GPRS & WIFI (ITEAD Studio, note the Wi-Fi Router)

Atmel AVR2054 Serial Bootloader (Gallery)
"It supports MCU programming via UART/SPI/TWI interfaces and also includes features required for Over-the-Air firmware Upgrade (OTAU)."

"Dare to be naïve." - Buckminster Fuller

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gchapman
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Posted by gchapman: Tue. May 20, 2014 - 07:18 AM
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stevech wrote:
... or Cradlepoint router w/4G cellular USB modem.
Supported Routers and Modems (Of Modems and Men)

"Dare to be naïve." - Buckminster Fuller

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AARON2017
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Posted by AARON2017: Tue. Oct 31, 2017 - 06:41 PM
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I'm a basic developer.

I'm building OTA with AMEGA2560, GSM800L and SD card.

What should I do?
I have no idea how to do that.
We would be very grateful if you could provide us with some useful information.

Regard.

Love ATMEGA

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awneil
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Posted by awneil: Tue. Oct 31, 2017 - 08:08 PM (Reply to #6)
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You have your own thread on this: https://www.avrfreaks.net/forum/how-build-ota-atmega2560-using-sd-card-and-sim800l

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillator: https://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
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ka7ehk
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Posted by ka7ehk: Tue. Oct 31, 2017 - 09:23 PM
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This is a cross-post!

 

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

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