Re-flashing Devo 7e bootloader?

Is this the same connections for the DEVO 10? Need to reflash my bootloader.

I was looking for this thread for you last night glad you found it!

Yes it's the same process but the connections (while the same) will be in different locations and you may need to adjust the addressing.

Great! One more question. I've got the ST LINK V2 with 10 pins (RST, SWIM, GND, 3.3V, 5V, SWCLK, SWDIO, GND, 3.3V, 5V). do I need to buy a twenty pin ST Linker to get the additional connections?

No what you have is it. I've only done a u7e not a 10 so maybe the names are just a little off? I use the same 10-pin STLINK v2

Great, thanks! I'll let you know how it turns out! BTW, your day job looks amazing!

I disassembled and reassembled the tx and the bootloader worked so I didn't have to reflash the bootloader. Thanks for your help. Everything is good again!

PhracturedBlue wrote: It turns out I had to do this today, so I can be pretty specific.
1st you need an stlink-v2 and a copy of the devo7e bootloader

You'll be using the 20pin header on the stlink.
on the 7e board, there is a 5-pin unpopulated header below the MCU, one pin is labeled RESET. We;ll call this pin '1'
connect pin1 (reset) on the Tx to pin 15 (NRST) on the stlink
connect pin2 (tms) on the Tx to pin 7 (TMS) on the stlink
connect pin3 (tck) on the Tx to pin 9 (TCK) on the stlink
connect pin4 (GND) on the Tx to pin 20 (GND) on the stlink
connect pin5 (Vdd) on the Tx to pin 1 (Vcc) on the stlink

just above the 5-pin header is a 2-pin unpopulated header. this is BOOT0. you need to place a jumper between the 2 pins.
On the upper left of the 7e circuit board is another 2-pin unpopulated header. This is power bypass. You'll need to short these together too, but not yet.

You need to install the software for the stlink-v2 to your PC (Windows only)

Now, plug in the st-link to the PC. It should be detected and drivers installed
Startthe ST-Link software.

make sure there are batteries in the Devo7e, and apply the jumper across the power bypass.

Now press the connect button in the stlink software on the PC. It should connect. If you get an error message, you have a connection wrong somewhere.

You will need to do a bulk-erase of the chip 1st. then you can load the bootloader and do a program&verify.
your bootloader is now loaded.

You need to disconnect the jumper on BOOT0 and power bypass before you do anything else.

I have ST-link V2 usb which has 10 pins only,
I can not find the pin connection using this to flash bootloader.
don;t want to kill the TX again...
anyone has the pin connections ?

for the 10pin st-link the connections are
be sure not to use the 5V line as it will damage the mcu.

[edit]
silpstream has a great tutorial on his site for flashing the bootloader >> silpstream.com/103/ultimate7e-flashing-the-bootloader/
[/edit]

I can not find the 2 pins to be "jump" on devo10 and the power pins ?
Do i have to jump those on devo10?

I don't know if this thread is dead or not but I just did this process on the 12e and it writes successfully but still nothing happens when I turn it on nothing happens still. Is there something I'm missing in this process? The one thing I did notice is there's not 12e bootloader just the f12e and 12, I've tried both to no avail

I don't think we have a copy of the 12e bootloader, why you need to flash it escapes me also?

ouch :/ perhaps a nice warning about tx compatability on the bootloader jump page to the google drive is in order?

Possibly, I'll let you know more information tonight when I flash the 12e dfu. But as far as compatibility I can 100% confirm that the Devo 10 bootloader does work on the 12e.

Well I can't load the 12e DFU through the install/upgrade tab or the DFU tab, it just greys out all the options and the walkera utility bricks it so I'm pretty much stuck with a Devo 10 in a Devo12e body. Atleast until the 12e bootloader is available which may be never but I'll keep looking!

Hi Is there any demonstrate or picture how to do this?
I'm quite not understand.