The new ASX00073 UNO SPE shield from Arduino is now being shipped by authorized distributor Mouser Electronics.

When compiling for an ESP32-S3 (and apparently also an -S2) with the Arduino framework, the SPI component always selects SPI 2 (FSPI) in the generated C++ code, even if interface: spi3 is specified.

Especially if all pins are used (particularly on boards that don't expose all I/O), I hoped to be able to disable either receive or transmit of the SPI peripheral, as can be done with the Pico SDK.