08-10-2024, 01:43 AM
(08-08-2024, 11:35 AM)adrii Wrote: Hi bagelwoof
I don't know about newer Pi's but I think the maximum supported speed for I2C is 400 kb/s, which is not quite enough for a smooth display. However, the value can be set to 800 kb/s, and this works for me. SPI speeds can achieve higher transfer rates.
Thanks for the info. I had no idea that we could modify the I2C bus speed.
There's some discussion that the Pi5 might be supported up to 1Mhz?
How to configure I2C on Pi5 to run with 1MHz - Fast Mode Plus
Apparently, the default is still 100khz. ...ouch...
It looks like we can still use mpd_oled with I2C on a Pi5. Is that correct?
It seems like this problem should also be present on the Pi4 if we use a Moode 9 image, but that's not what I'm picking up from reading this thread. Can we drive an SPI display with Moode 9 on a Pi4?
