Search found 9 matches

by ChuckMcM
Mon May 25, 2020 6:45 am
Forum: General Discussion and Questions
Topic: SDRAM module
Replies: 12
Views: 2573

Re: SDRAM module

@jcw that is the 'F7' version, the one I have been playing with is the F4 version (the ST32MF469). The '469 has the DSI and MPI hardware so it can drive a larger display with just the two pins.
--Chuck
by ChuckMcM
Sun May 24, 2020 6:19 am
Forum: ESP8266 boards
Topic: D1 Clones
Replies: 13
Views: 1759

Re: D1 Clones

Be aware that if you load that code into boot.py it can make it challenging to get control back of your board. You have to hit it where it is booting but before it has put itself to sleep. So there's that.

--Chuck
by ChuckMcM
Sun May 24, 2020 5:52 am
Forum: General Discussion and Questions
Topic: SDRAM module
Replies: 12
Views: 2573

Re: SDRAM module

Yes on SDRAM, probably not on this particular module. I've written support for SDRAM on both the STM32F429 disco board and the STM32F469i disco board (in C) Repos are available on my github (https:://github.com/ChuckM/stm32f469i and in the contributed code for the libopencm3 examples on the STM32F42...
by ChuckMcM
Sun May 24, 2020 5:41 am
Forum: ESP8266 boards
Topic: D1 Clones
Replies: 13
Views: 1759

Re: D1 Clones

When you get your own issues sorted out, I would be very interested to know if you can confirm whether or not your D1 boards successfully wake from deep sleep with the RTC alarm. Hi kwiley, On the "back" of my D1 boards there are two pads with a silkscreen label pointing at them that says "sleep". ...
by ChuckMcM
Sun May 24, 2020 3:36 am
Forum: ESP8266 boards
Topic: D1 Clones
Replies: 13
Views: 1759

Re: D1 Clones

You need to specify the flash mode when flashing your firmware — different boards will have the flash connected differently. There are four possible combinations, so you can just try them all and see which one works. This seems to have ultimately unlocked my issue, thanks! The flash chips on these ...
by ChuckMcM
Sat May 23, 2020 10:39 pm
Forum: ESP8266 boards
Topic: D1 Clones
Replies: 13
Views: 1759

Re: D1 Clones

Hi, My first thought was flash size (i.e. they're not really 4MiB). Have you tried flashing the 512kiB or 1MiB versions instead? Yes, that was the first thing I tried. It appears that they are smaller than 512kiB. I've built all of the generic versions. The Arduino code "works" for small sketches, ...
by ChuckMcM
Wed May 20, 2020 6:00 am
Forum: ESP8266 boards
Topic: D1 Clones
Replies: 13
Views: 1759

Re: D1 Clones

Thanks, I'm still looking at things.
by ChuckMcM
Wed May 20, 2020 4:59 am
Forum: ESP8266 boards
Topic: D1 Clones
Replies: 13
Views: 1759

Re: D1 Clones

Okay, easy question. The ESP8266 can run at 80MHz or 160Mhz, what is the default and where does that get set?
by ChuckMcM
Wed May 20, 2020 2:39 am
Forum: ESP8266 boards
Topic: D1 Clones
Replies: 13
Views: 1759

D1 Clones

Hi All, A friend of mine showed me uPython on the D1 Mini and I was very impressed. I bought a pack of 10 on AliExpress and have used them in many things. I got a Wio Link from Seeed Studio and put the generic build on it and it has issues, the repl comes up but it randomly resets. To debug that I g...