Plasma/THC plugin crashes RP23U5XBB (RP2350B) on boot

[dweaver32]

I'm hoping someone could help shed some light on this one. When selecting the Plasma/THC plugin, the firmware crashes immediately on boot. I've worked through multiple combinations, which all work, including Ethernet, MCP3221, etc. when Plasma/THC is not selected.

This is a fresh build, utilizing the RP23U5XBB, RP2350B @150MHz board and driver, with the Web Builder build 20260518. I'm wondering if there's a mapping difference between the RP2040 and RP2350 in thcad2.c, specifically the PWM based frequency counter on GPIO 11 and DMA gate timer on GPIO 0... or at least that's what my computer friend tells me.

When the Plasma/THC is enabled, below are the build symbols from dev outputs.

RP_MCU=2350, PLASMA_ENABLE=1, SPINDLE0_ENABLE=11, WIZCHIP=5500, ETHERNET_ENABLE=1

[terjeio]

I forgot to commit the RP23U5XBB board map earlier with pin definition for the THCAD2. The pin to use is pin 27 which is the RX pin of the UART1 header. The INPUT SELECT link has to be set in the east position to route it to the MCU. FYI it is not possible to use the aux input header since those inputs are filtered with a cutoff at around 15KHz.

[dweaver32]

terjeio, thank you for the reply and mapping. This is greatly appreciated!