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EEVblog 1524 - The 10 CENT RISC V Processor CH32V003

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3roomlab:

--- Quote from: thm_w on February 16, 2023, 10:17:19 pm ---
--- Quote from: 3roomlab on February 16, 2023, 12:24:57 pm ---I just want to share something I tried regarding translating chinese pdf into english

--- End quote ---

Did you try the google pdf translator?

edit: Interesting that every PDF link is just a RAR of the entire datasheet collection..

--- End quote ---

I was reading the pagetranslate.oxt extension web page and it says it uses google translate
and here I forgot all about source itself which is google document upload function *facepalm me!*

SiliconWizard:

--- Quote from: EEVblog on February 03, 2023, 12:31:00 pm ---FYI, WCH just contacted me and said they saw the video which has been very popular and have offered me parts. What should I get?  :-//

--- End quote ---

All of them? ;D

BlakeSeven:
Try their little 8 pin CH32V003 J4M6?

willmore:
I just got my parts in from Ali.  I got 50 J4M6 (because why not?), 50 F4P6, and the WCH-LinkE+F4P6 dev board (and 5 more chips).

I've got the dev environment (ch32v003fun) running and I've programmed the dev board with the blink and ws2812b examples and they work.  So, that was fun.  I haven't tried programming the 8 pin chips yet as I'd like to know more about how their I/O works.  There's a lot of I/O stuffed onto 6 pins.  In particulat, I want to know about the limitations WRT programming over SWIO (pin 8, PD1) which is shared with a lot of other functions.  I have no idea if you can use that pin as an I/O *and* for programming or how that works.

If you can't share that pin, then something as simple as the default blink code (which uses PD4--pin 8 of the J4M6) would effectively make the part OTP as it's not going to be SWIO anymore.  I'd like to get some clarification on that before I commit too much.

My intention is to design a dev board for the two variants I got, but I'll want to get a little more experience with them before I make boards.  I also want to find a cheap USB-C socket to use--I've used up all the micro-USB-B sockets I had and I'd like to move up to C.  Suggestions welcome.

I'm not new here, I had an account a long time ago and somehow it got lost, so I recreated it today.  Hello, all!

rhodges:

--- Quote from: willmore on April 06, 2023, 09:08:11 pm ---I haven't tried programming the 8 pin chips yet as I'd like to know more about how their I/O works.  There's a lot of I/O stuffed onto 6 pins.  In particulat, I want to know about the limitations WRT programming over SWIO (pin 8, PD1) which is shared with a lot of other functions.  I have no idea if you can use that pin as an I/O *and* for programming or how that works.

--- End quote ---
Here is my story:
https://www.eevblog.com/forum/microcontrollers/ch32v003-j4-(sop8)-pins/msg4726238/#msg4726238

--- Quote ---If you can't share that pin, then something as simple as the default blink code (which uses PD4--pin 8 of the J4M6) would effectively make the part OTP as it's not going to be SWIO anymore. 

--- End quote ---
Yes, indeed. A large timeout after reset and before configuring the pin might be okay for development.

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