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adafruit / Adafruit_CircuitPython_NeoPixel_SPI

SPI driven CircuitPython driver for neopixels.
MIT License
24 stars 11 forks source link

SPI Buffer Size #18

Closed antoinericha closed 4 years ago

antoinericha commented 4 years ago

Hello,

I am trying to control 300 LED from an nvidia xavier nx. I used the neopixel_spi since neopixel is not supported by nvidia.

I am now able to control 168 LED since the buffer size is 4096 only. I increased the bufsiz to 65535 but still I have the same issue.

Is there a solution from the neopixel_spi library to solve this problem, or it is a pure hardware issue.

Thank you.

caternuson commented 4 years ago

@makermelissa Do you know if this is something specific to the Jetson Xavier? I don't have any experience with that hardware platform.

antoinericha commented 4 years ago

From the Xavier part, I was able to increase the bufsize to 65535. but is still not showing any difference with LED number. I asked nvidia for help to check if it is a problem related to the hardware.

But here I am checking if I can control the buffer size from the script. Till now I only can send the RGB color which is 24 bit for each LED

makermelissa commented 4 years ago

@caternuson I have not worked with the Xavier NX before. I have only used the Jetson Nano and when I used it, it didn't even have SPI available without some major work.

antoinericha commented 4 years ago

The Xavier NX is almost the same as nano with the SPI configuartion. it needs a basic configuration to turn it on in the board using 2 or 3 command lines. But concerning the buffer size, I solved it and I am capable of running more than 168 LED = 4096 bufsiz. It can be solved by changing the bufsize in the board and inside the neopixel SPI library.

evaherrada commented 4 years ago

Closing. I'm pretty sure this is resolved. @antoinericha let me know if it isn't and I can reopen the issue.

osinpl commented 3 years ago

neopixel SPI library

Hi I have the same problem on jetson nano need to control 288 leds and it seems to be not possible, I checked with andruino and there is no problem. Can you let me know where exactly you made changes in your case?