Forum Rule: Always post complete source code & details to reproduce any issue!
Tab Content
  • easone's Avatar
    02-16-2020, 03:57 AM
    Here's some example code... this shifts out data in parallel to pins 10-13 every 25 ns. It requires KurtE's FlexIO_t4 library ( (Note that there's a typo in that library that needs to...
    14 replies | 363 view(s)
  • easone's Avatar
    02-10-2020, 04:50 PM
    It might not help you specifically since it isn't compatible with OctoWS2811, but Ward demonstrated a way to drive WS2811 strips using the FlexIO and some external shift registers:...
    3 replies | 104 view(s)
  • easone's Avatar
    02-10-2020, 04:32 PM
    Yes, this might be a good use for FlexIO. Unlike the GPIO ports which can only output 32 bit writes, FlexIO allows you to output parallel data to 4 pins (or 8, 16, or 32) and have it clocked out at a precise frequency....
    14 replies | 363 view(s)
  • easone's Avatar
    01-16-2020, 08:48 PM
    The SmartMatrix library uses double buffering so the memory usage is twice as large as you would expect. In my case, with a 128x64 screen size and 16 bit color depth * 3 color channels (6 bytes per pixel), the buffer...
    7 replies | 286 view(s)
  • easone's Avatar
    01-16-2020, 08:29 PM
    I'm working on a project that drives 4 panels (each 64x32 pixels) using a T3.6 and SmartMatrix. Overclocked to 240Mhz, there's just enough speed to refresh the screens at 100-120 Hz (with 16 bit per pixel color) while...
    7 replies | 286 view(s)
No More Results
About easone

Basic Information


Total Posts
Total Posts
Posts Per Day
Last Post
Next steps on NTSC output from Teensy 4.0 02-16-2020 03:57 AM
General Information
Last Activity
02-16-2020 04:32 AM
Join Date