Search found 7 matches

by wiml
Fri Apr 27, 2018 6:46 pm
Forum: Kinetis Support
Topic: Road to K64F port
Replies: 20
Views: 2745

Re: Road to K64F port

Hey walkerstop, nice to see another person working in this area! I haven't tried using the USB peripheral on my Teensy3.5s — I was mostly interested in the SDHC and UARTs. But I did eventually hack a Teensy to allow me to attach a JTAG debugger, which makes debugging low-level drivers a bit easier (...
by wiml
Thu Feb 08, 2018 8:57 am
Forum: Kinetis Support
Topic: MCP23017 init & data transfer
Replies: 1
Views: 459

Re: MCP23017 init & data transfer

Do you have a pullup on the i2c lines? On the Kinetis parts, if you need a pullup but don't have an external pullup, I think you need to explicitly enable pullups on an open-drain pin (I don't think the PAL driver can do this, you need to do it explicitly). The i2c peripheral might be hanging becaus...
by wiml
Sat Jan 06, 2018 12:52 pm
Forum: Kinetis Support
Topic: Road to K64F port
Replies: 20
Views: 2745

Re: Road to K64F port

FYI, I've been pushing some changes to my fork of the repo at https://github.com/wiml/ChibiOS-Contrib , and I'll be making pull requests to the main chibios-contrib repository as individual parts become more mature. Let me know if you try to build from those branches and fail, in case I've forgotten...
by wiml
Mon Jan 01, 2018 12:29 am
Forum: ChibiOS/HAL
Topic: SDC LLD development questions
Replies: 3
Views: 251

Re: SDC LLD development questions

Hmmm, OK. But if it is implemented, what is it supposed to do? Or, how do I know whether my LLD should implement it or not? Is it related to the DAT0 BUSY signal?
by wiml
Wed Dec 27, 2017 4:49 am
Forum: ChibiOS/HAL
Topic: SDC LLD development questions
Replies: 3
Views: 251

SDC LLD development questions

I'm writing a LLD for the Kinetis K64F's SDHC peripheral. I have a handful of questions about how the higher level driver expects the LLD to behave. I can make guesses about some of them but I'd rather have the info from a more authoritative source My main question right now is the sdc_lld_sync() fu...
by wiml
Fri Dec 08, 2017 11:16 pm
Forum: Kinetis Support
Topic: Road to K64F port
Replies: 20
Views: 2745

Re: Road to K64F port

I haven't published anything. I assume the best way to do so would be to make a fork of the contrib repository on github so that it can be merged in at some point. I am unlikely to have the time to maintain this port once I'm done with this project, but there seem to be many people who have some int...
by wiml
Fri Dec 08, 2017 7:41 am
Forum: Kinetis Support
Topic: Road to K64F port
Replies: 20
Views: 2745

Re: Road to K64F port

For what it's worth, I've also been working on a K64F port, for the Teensy3.5. I'm at the point where the basic ChibiOS/RT tests run, and I'm working on the one or two drivers I need.

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