Release 4.2.0

Overview

Important updates for PSRAM-enabled devices. BLE and FreeRTOS bug fixes. Speed boost for RP2350.

New/Updated Boards

• Add WIZnet W55RP20-EVB-Pico board (#2555)
• Add Jumperless and Jumperless V5 to supported boards (#2514)
• Add seeed xiao rp2350 board (#2533)

RP2350/Pico 2

• Add ARM assembly optimized memcpy for RP2350 (#2552)
• Fix getStackPointer() to work in RISC-V and ARM mode (#2526)
• Update PSRAM cache flush algorithm (#2563)
• Workaround PSRAM cache invalid'n by reading flash (#2551)
• Preserve PSRAM QMI interface around flash ops (#2539)
• Add PSRAM Size selection and Frequency Selection for Datanoise PicoADK V2. (#2529)
• Document setting the PSRAM size for PlatformIO (#2527)
• Add PSRAM size menu to Adafruit Feather RP2350 HSTX (#2521)

Bluetooth

• Fix 2.0 SDK BLE devices (#2560)

FreeRTOS

• FreeRTOS: Add ISR check to critical section (#2559)
• Update FreeRTOS examples for PicoW (#2557)

General Core and Libraries

• GPIO interrupt dispatcher, minimize blocking (#2558)
• Remove DEBUGV for lfs_file_close (#2554)
• Latest ESPHost, much better performance using DMA (#2545)
• Update Adafruit TinyUSB to 3.3.4 (#2543)
• Increase default PWMAudio buffer sizes (#2530)
• Add getResetReason() by palmerr23 (#2516)
• Remove 2 instructions from tone PIO program (#2515)