MicroPython 1.29

A new port: PSOC Edge

The psoc-edge port runs on Infineon PSOC Edge microcontrollers, starting with the KIT_PSE84_AI board. It has a UART REPL, a filesystem on the QSPI flash, and machine.Pin, UART and RTC, with interrupts on pins and UARTs. It joins the ports at tier 2.

New silicon and boards

• ESP32-H2 on the esp32 port, which now builds with ESP-IDF 5.5.2.
• Thirteen new board profiles across the esp32, psoc-edge, rp2 and stm32 ports.
• rp2 moves to pico-sdk 2.3.0 and adds rp2.DMATimer.

machine

• machine.CAN, introduced on STM32 in 1.28, now also runs on the alif and mimxrt ports.
• machine.mem_backup() returns a writable memoryview of memory that usually survives a hard reset.
• STM32 gains machine.SDCard and the window watchdog; alif gains machine.WDT and a timeout for machine.lightsleep().

Language

bytes.find() accepts an integer, int.to_bytes() takes signed=True, and bytes.decode() and str() accept the "strict", "ignore" and "replace" error modes. Only "utf-8", "utf8" and "ascii" are accepted as encodings; any other name raises LookupError.

Changes to check before upgrading

• The powerpc port has been folded into the qemu port.
• On esp32 and stm32, SDCard.readblocks() and writeblocks() return 0 for success and a negative number for failure.
• Every nrf board reports sys.platform as "nrf".