Overview

Medium-sized update which adds the capability of adding and removing USB devices on-the-fly. Sketches with only Keyboard or Mouse and no Serial are now possible. Also allows forcing the USB product ID from within a sketch, removing the need to set defines or create one-off variants.

NOTE: With this change, devices don't register on the USB port until you ::begin them. Make sure you call Keyboard.begin(), etc. as appropriate in your setup if you're not doing so already.

Lots of very pedantic warnings cleared up, minor SerialPIO/SoftwareSerial bugfix, and unidirectional SPI support rolled in.

USB

• Move statics into SerialUSB object (#3150)
• Support dynamic USB reconfiguration (#3139)

Memory Savings

• Only allocate MFIFO queue in multicore, 32B saved (#3149)
• Bitmask for IRQ stack, save ~112B RAM (#3148)

SerialPIO/SoftwareSerial/SPI/PWMAudio

• Fix SerialPIO::available during wraparound (#3143)
• Allow SPI to disable RX or TX pins (#3141)
• Fix PWMAudio speed when over/underclocking (#3135)

Libraries

• Update Adafruit TinyUSB to 3.7.2 (#3147)

New Boards

• Add Soldered NULA RP2350 board (#3138)

Extra-pedantic Warnings

• Remove unneeded includes SerialPIO (#3130)
• Run CI with add'l warning -Wdouble-promotion (#3128)
• Remove unneeded includes from SerialUART (#3129)
• Double promotion warning fix. (#3127)
• Fix double promotion warnings. (#3126)