Recently I returned to this, and found a better way to do it: https://spin.atomicobject.com/2018/11/03/neopixels-esp32/ With bitbanging in bitbang_send_pixels I never got completely rid of flickering. But the approach with rmt channels works nicely. The new code is now: #include <Arduino.h> #include...

Instead of rmt_set_pin (and rmt_clear_pin, which I don't know if it exists), you may be using

Sorry that I bothered you with this. I think the problem was the "adapter_khz 1000" at the end of the config options, where a 0 is missing. Also, the statement is not necessary, esp32.cfg contains an "adapter_khz 20000" statement.

Hi, I use Sloeber, and try to debug with an OpenOCD Jtag adapter. In Eclipse, the GDB OpenOCD Debugging Config options are -c "debug_level 3" -s d:/eclipse-sloeber/openocd-esp32/share/openocd/scripts -f interface/ftdi/openocd-usb.cfg -f board/esp-wroom-32.cfg -c "adapter_khz 1000" When I start to de...

Video of LED array now at https://www.youtube.com/watch?v=slCO8wXVvGg

Shortly after I wrote the last post I realized it was wrong in several respects. First, under some circumstances the leds did still flicker. Second, there was a programming bugs: Instead of comparing the current cycle count against a number: cyclesT0 = _getCycleCount() + CYCLES_T0; do { cyclesNext =...

Preview: Re: Problem with parallel GPIO pins This is now fixed, luckily. First I did what Vader told me to do: add level converters from 3.3 to 5 volt to each of the 10 GPIO pins. This improved things a lot, still I saw Leds shining in unexpected places, obviously a timing problem. After a while I c...

Hi, I cut a 5m 300 LED strip into 10 strips of 30 LEDs each, and attached each strip to one of the GPIO pins 5,16,17,18,19,23,25,26,2,4. Then I added a setpin(pin) function to the NeoPixel library, and programmed the strips in an outer loop, setting the pin, and an inner loop, for the 30 LED. This w...