ARM SWD Programmer

Kye

I was able to successful deploy a propeller chip as a parallel SWD programmer for ARM cores. The project is here: https://github.com/OpenMV/openmv-swd

With the propeller chip, I was able to use my file system driver to open 5 files at once, launch 5 separate SWD programming threads, and flash firmware onto five STM32F427 processors at the same time. The propeller is able to do a erase+program+verify operation of 512KB in about 30 seconds for 5 boards at a time. This is much faster than what the ST debuggers can do. With the propeller SWD programmer, an operator can program 1500 boards in about a day (working non-stop of course).

Thanks Parallax!

Peter Jakacki

Kye wrote: »

I was able to successful deploy a propeller chip as a parallel SWD programmer for ARM cores. The project is here: https://github.com/OpenMV/openmv-swd

With the propeller chip, I was able to use my file system driver to open 5 files at once, launch 5 separate SWD programming threads, and flash firmware onto five STM32F427 processors at the same time. The propeller is able to do a erase+program+verify operation of 512KB in about 30 seconds for 5 boards at a time. This is much faster than what the ST debuggers can do. With the propeller SWD programmer, an operator can program 1500 boards in about a day (working non-stop of course).

Thanks Parallax!

Well done Kye, sounds like you're chuffed. Go the Prop!!! (and Parallax)

tonyp12

Can it do debugging or is just a firmware uploader?
I bought this $8.50 that I think will be completely compatible with IAR (should get it anyday now to test)
http://www.ebay.com/itm/1pcs-J-Link-OB-ARM-Debugger-Programmer-Downloader-replace-v8-SWD-M74-/351235114957?ssPageName=STRK:MERWX:ACTPNL:LNLK:ITM

Kye

Technically, yeah, but, debugging an ARM core requires you to make your code able to plug into some debugging API. I just needed a firmware loader. My code handles the low level connection processes however. It can be extended to do processor register reads and writes.

Heater.

Kye, that is cool. Totally the opposite of what I have been doing, programming Props from ARMs.

Cluso99

Congratulations Kye. Found a use for the prop in there at last

User Name

I've been working up the courage to tackle the programming of Cypress PSoC4 chips via SWD. Cypress even makes an app note to help such a cause. http://www.cypress.com/?docID=48768

The Propeller was the chip I wanted to use but I much prefer to program the Propeller in PASM vs. C - and the app note is entirely oriented toward C. Gratefully, it looks like you've already taken care of the entire situation!

evanh

Pictures, or it didn't happen! :P

Kye

All I have is the test rig at home:





I tested by loading some blink LED firmware onto four boards at once. The firmware was 130KB.

evanh

Oh, how cool. I was expecting a custom board but you've happily used a project board. Kind of obvious now, given it's just a few data plugs required. It wouldn't be hard to clean that up heaps still without a custom board design.

Kye

The custom board is at the manufacturer. I had to verify before green lighting.