ESP32-C6 Allocation of unused SPI pins for LP_UART
Posted: Thu Mar 12, 2026 5:23 am
Hi
I am using a WIZnet WIZ810Sio module (W5100S) with an ESP32-C6-MINI-1U-H4/H8 module.
The ESP32-C6-MINI will be the SPI MASTER.
The W5100S only requires MOSI (FSPID - P1), MISO (FSPIQ - P1), SCLK (FSPICLK - P1) and CS (FSPICS2 - P1).
If I allocate the above pins can I then use FSPIHD - P1 (QADHD) and FSPIWP - P1 (QADWP) for the LP_UART?
A note on the use of FSPICS2 - P1 for the Ethernet CS above instead of FSPICS0 - P1:
I am using FSPICS2 as I want to make use of UOTXD and UORXD for a 2nd UART.
Is it ok to use FSPICS2 for the Ethernet device and UOTXD and UORXD for the 2nd UART?
Many thanks
BJ
I am using a WIZnet WIZ810Sio module (W5100S) with an ESP32-C6-MINI-1U-H4/H8 module.
The ESP32-C6-MINI will be the SPI MASTER.
The W5100S only requires MOSI (FSPID - P1), MISO (FSPIQ - P1), SCLK (FSPICLK - P1) and CS (FSPICS2 - P1).
If I allocate the above pins can I then use FSPIHD - P1 (QADHD) and FSPIWP - P1 (QADWP) for the LP_UART?
A note on the use of FSPICS2 - P1 for the Ethernet CS above instead of FSPICS0 - P1:
I am using FSPICS2 as I want to make use of UOTXD and UORXD for a 2nd UART.
Is it ok to use FSPICS2 for the Ethernet device and UOTXD and UORXD for the 2nd UART?
Many thanks
BJ