My bootloader is gone « LeafLabs Garden

LeafLabs Garden » Support » Maple Hardware Support

My bootloader is gone

(4 posts) (3 voices)

Started 11 months ago by jwaldorf2
Latest reply from tormod

jwaldorf2
Member

I'm a student working on a lab assignment relating to memory and we were supposed to read/write to flash to see just how much usable space our board actually provides. After reading this post:
http://forums.leaflabs.com/topic.php?id=146

and reviewing the source code from the pages it provided I thought I got it working but I miss read the flag that I needed to use and cleared my entire Flash memory. My device no longer shows up at all in Device manager. I've tried following the instructions here:

http://leaflabs.com/docs/bootloader.html

but since my device is not being recognized anymore I get an error when I try to run the Python script.

Any advice?

I'm running a Maple board r5
Windows 7 x64.

I had all the drivers and everything working before I bricked it.

Posted 11 months ago #
jwaldorf2
Member

Update:
So I went back to this page talking about how to reload your bootloader:
http://leaflabs.com/docs/bootloader.html

One of the members describes the process for using an arduino to act as your serial connection. Here's the process I've followed.

1.) Removed the jumpers from the USB power so the board can be powered from 3.3V.
2.) Connected the Arduino Uno's TX and RX pins (1 & 0) to the maple's TX and RX pins (7 & 8).
3.) Connected the Uno's ground to the maple's ground.
4.) Held down BUT as I plugged in the 3.3V from the Uno to the Maple's Vin pin.
5.) Ran the python script python stm32loader.py -p COM9 -evw maple_boot.bin

When I do this I receive the error "Can't init Ensure that BOOT0 is enabled and reset device"

I've tried holding down BUT and pressing reset then releasing BUT all while everything was connected but I keep getting that same error.

Posted 11 months ago #
rogerclark
Member

The most likely reason that you can't upload the bootloader is that Boot1 on the maple board is floating.

Connect that pin to GND and try again

Also. Download the STM "Flash Loader Demonstrator" if you are running windows, as its got a better UI and does the same job, i.e it will let you upload a binary

I'd also recommend that you go onto the Arduino forum

http://forum.arduino.cc/index.php?topic=265904.new#new

As we now have a active community for Maple on there. Which for some reason people don't know exists.

Posted 11 months ago #
tormod
Member

Generally when fighting with serial connections, double-check that RX and TX are crossed correctly. Heck, I even try swapping them after double-checking, because there are many devices which label them wrongly.

Posted 11 months ago #

RSS feed for this topic

Reply

You must log in to post.