Search found 3 matches

by andrewelder
Wed Feb 22, 2023 11:10 pm
Forum: General Discussion
Topic: ESP32 SPI SCLK GPIO drive strength
Replies: 3
Views: 3516

Re: ESP32 SPI SCLK GPIO drive strength

How did you observe the improved SPI performance?
by andrewelder
Mon Feb 13, 2023 10:35 pm
Forum: General Discussion
Topic: ESP32 SPI SCLK GPIO drive strength
Replies: 3
Views: 3516

ESP32 SPI SCLK GPIO drive strength

I have a custom design using an ESP32 that will have the SPI SCLK fanning out to 3 SPI devices. I'm trying to set the drive strength of the GPIO used for the SPI SCLK to the maximum possible. I have code that looks like: #define CMGPIO_BR_SPI_SCLK GPIO_NUM_2 and buscfg.miso_io_num = CMGPIO_BR_SPI_MI...
by andrewelder
Fri Apr 01, 2022 9:48 pm
Forum: ESP-IDF
Topic: ESP32S3 - how to read GPIO input from a wake stub
Replies: 4
Views: 3123

ESP32S3 - how to read GPIO input from a wake stub

I'm testing on a ESP32S3-DevKitM-1. I can make GPIO outputs work from within my wake stub, but not GPIO inputs. Complete code is included below. What an I missing? I have verified that the main application does read the same input GPIOs correctly. /* * This sample illustrates writing and reading GPI...