Forum Rule: Always post complete source code & details to reproduce any issue!
Tab Content
  • Jean-Marc's Avatar
    07-12-2019, 05:22 AM
    @manitou,@wmxz, Is there a way to specify the CS when using uSDFS in SPI mode (audio board or when using the SD of the ili9341 display) iso the Sdio build-in pins? A bit like SD lib does?
    3829 replies | 392093 view(s)
  • Jean-Marc's Avatar
    07-11-2019, 07:18 AM
    If someone wants to try the emulators on the T4, use teensyMCUME on https://github.com/Jean-MarcHarvengt Pinout file is included. For more details, use the doc in espMCUME. At the exception of teensyvectrex, the rest...
    3829 replies | 392093 view(s)
  • Jean-Marc's Avatar
    07-11-2019, 06:49 AM
    Thanks, I had noticed that you could also use uSDFS with the SD card but when I tried it was not working. May be it is because of my card. I use to format it Fat on the Mac. I will try again when I am back from holiday....
    3829 replies | 392093 view(s)
  • Jean-Marc's Avatar
    07-10-2019, 03:22 PM
    I have tried USDFS with USB MSC library, it goes very well. I created a small app on the ILi9341 to browse files from USB and SD card (using Sdio connected of the break out board). For the SD file browsing I had to use...
    3829 replies | 392093 view(s)
  • Jean-Marc's Avatar
    07-02-2019, 06:07 AM
    Talking back about the cache management, I also had the issue using the SD card library to load content into OCRAM. I just wrap up the file.read in a custom function that reads in everything in chunks of 256 bytes in a...
    3829 replies | 392093 view(s)
  • Jean-Marc's Avatar
    06-25-2019, 05:45 PM
    Thanks for your advice Paul, it did help. I now have a picture for the Atari520ST emulator port. I still miss 8K to allocate outside the OCRAM but I can now see how fast the T4 is compare to the ESP32 with the SPI RAM....
    3829 replies | 392093 view(s)
  • Jean-Marc's Avatar
    06-23-2019, 01:14 PM
    I just received my T4b2 from Robin on Tuesday. Amazing form factor! Will the ribbon be provided in the final product too? The card was just on time to understand properly the pinout. So, no I don't have any remark....
    3829 replies | 392093 view(s)
  • Jean-Marc's Avatar
    06-12-2019, 09:33 PM
    Hi Paul, I don't think it is a bad idea. I guess cached/uncached memory is independent of DTCM/OCRAM That would mean that data and DMA buffers can end up in static variables (at least 128K for e.g for the IL9341...
    3829 replies | 392093 view(s)
No More Results
About Jean-Marc

Basic Information

Statistics


Total Posts
Total Posts
35
Posts Per Day
0.08
Last Post
Teensy 4.0 First Beta Test 07-12-2019 05:22 AM
General Information
Last Activity
Today 03:58 PM
Join Date
05-26-2018