Hello.
Hardware: ESP32-C6 (dev board or any custom boards)
Software: spi slave exsample
Docs says: When an SPI Host is set to 80 MHz or lower frequencies, routing SPI pins via GPIO matrix will behave the same compared to routing them via IO_MUX.
But in reality, when MOSI or MISO or SCLK connected to any other (not IO_MUX) pins, then speed 20Mhz or higher is not working (too many errors).
ESP32-C3 and S3 was tested also - everything works fine, problem detected with C6 only.
It will be fine, if it can be fixed.
ESP32-C6 spi slave
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Espressif Systems is a fabless semiconductor company providing cutting-edge low power WiFi SoCs and wireless solutions for wireless communications and Internet of Things applications. ESP8266EX and ESP32 are some of our products.