MCP23S17 too slow

[robertspil]

Before and after each change of the pin_cs ( Chip Select pin ) there is a sleep_ms(1)
The SPI specifications for the MCP23S17 have some time delays for the CS signal, no more than 100 ns.
I use this code with a Raspberry Pico, WITHOUT any sleep, with a big performance increase .
Maybe a sleep of one microsecond may be safe for a very fast processor.

[NicolasJVelez]

Hi @robertspil, I am working with an ESP32 in micropython and it has a very slow screen update. How can I do to increase the speed? I have commented the function def delay_us( self ):

[mchobby]

Hi,
didn't take the time to update the library.... will do it right now.

[mchobby]

Replaced the milli-second delay by micro-second delay. Will already be better waiting for advanced testing

[NicolasJVelez]

Replaced the milli-second delay by micro-second delay. Will already be better waiting for advanced testing

I can't see any changes in the ST7687 library. I already commented on the delays, and the screen refresh is still slow, any advice?

[mchobby]

How sorry, you did record it into the MCP23S17 issue
Please open a new issue... I will have a look