deskthority

Hello there!

I updated my github with an stm32L100 port in a dedicated "STM32L100_Variant" branch:
https://github.com/Ced67/TCKB_Software/tree/STM32L100_Variant

The STM32CubeMX I used seems to have a little bug that generate code for stm32l100RB even if R8 is selected... but if the code is still ...

You are right, I mixed ESD and EMI... but sorry, I can't quantify how much worse is the sensibility to static discharges

I can't quantify that but I believe it means it is more noisy than their stm32F cousins at equal operating conditions.
My electromagnetism knowledge is quite null

Hi,
Yes I did define the leyout schematics.
I did install your version of coocox but that version does not support the stm32l100 series ,But I have seen a new beta version of coocoxv2.0 that supports the stm32l100.

will be testing this ide beta and see if it will change something.
Thank you for ...

Do you have an already defined layout/schematic?
That would help for the cubemx definitions.

In a first time, I would like you to try to compile it as is with the same coocox version i used (I wrote it in the github description), just to make sûre we start on the same basis.

Hi,
I'm on my phone right now and dont have access to my desktop.
To answer quickly, the major porting must be done through the stm32cubemx project.
I don't have the datasheet for the stm32l100 but I believe it is pin compatible with the stm32l053 I used.
Be careful though as some stm32 limes rely ...

Sorry for the noob question, but where does the USB port go? Do you need to get an additional breakout board with the USB connector?
The usb signals are noted GND/+5V/D+/D-. I believe you can either directly solder a usb cable or one side of extension cord, like that one: https://www.amazon.com ...

Yes I know this one! It even had a thread here on DT and was one of my first inspirations.

But as I wanted my application to run with an embedded operating system (FreeRTOS), that vvb stm32 code was not suitable.

Thanks for the highlight

Hi, I did mine on YOUPCB.
Their instant quote tells spot on the cost of your board.

My order was dual layer, 280*94.6mm, 1.6mm pcb, 1oz copper, direct gold finish and dhl direct package and I paid less than 50€ for five boards, shipping included.

A lot of this is beyond my grasp, but I command you for trying something new. I think Flabbergast has been toying with STM32s for a while too but they're surprisingly rare in keyboards despite their price point and potential.

And that family photo is great!

Thanks :D
I would be glad to share ...

Hello everyone!
It's been a while since the last update about my project.

I think I tested it quite thoroughly and I'm now able to provide the sources files (Soft and PCB). I updated the first post as well.

Kicad: https://github.com/Ced67/TCKB_Kicad
C: https://github.com/Ced67/TCKB_Software

For ...

Good morning everyone!
The hardware is fine and I'm live testing it today at work :)
http://i.imgur.com/zunciVE.jpg


Leds could have been a bit brighter but I choose resistors to avoid frying a led column in case multiplexing stops and get stuck for too long (can happen during step by step ...

pomk wrote: Colde does not list kl27 as being supported though!

Damn, I did not looked that far...

I too would have preferred to code on my linux box but I was too lazy at that moment to put together a complete toolchain with eclipse and gcc... I let me seduced by the easy way

matt3o wrote: I mean as a dev environment. I was looking at NXP dev tools and was wondering if there was anything more streamlined

For personnal ARM development, I use CoIde, an Eclipse/gcc based environment that works out of the box.
The debugger I use is a J-Link probe.

Debug time :geek:
The switch matrix is functional!
http://i.imgur.com/0BE8UIz.jpg


All the SMDs are soldered but I made a misake...
Initially, I opted for a dual STM32 L1 51 setup but realized later that as crystal-less it can be, the only subsystem that rely on external clock is the usb ...

Thanks for the help
I used flux (maybe not enough) and leaded solder. The soldering station I use at work only has a conic tip... I'll check if I can find a bevel one.
For all the other smd component, I use hot air which is easier as you said.

Thanks for the insight, this is very cool! You are right that TMK is the de facto standard for a lot of boards because it's powerful and customisable, but it's very interesting to see alternate options available. I would love to have a play around with one of these if you decide to sell your excess ...

Atmel in the keyboard community is like chicken and egg:
Were firmwares like TMK written because Atmel were preponderant (as were teensies) or were Atmel widely adopted because TMK is a good and easy piece of software? :D

As i said in the presentation, I choose to use an stm32 platform as a guinea ...

Hello everyone,
As an introduction, I'll talk a bit about me and say I'm an embedded software engineer since about ten years. The firm I work for make a huge use of multiple STM32 arm micro controllers and I play with them every day :ugeek:

1) The genesis

For my personal entertainment I wanted ...