MicroPython • MicroPython 1.26 released

https://github.com/micropython/micropython/releases/tag/v1.26.0

Full list of added features and changes at that link but the highlights seem to me to be -

• This release of MicroPython sees the introduction of machine.I2CTarget, which allows Python code to implement an I2C target device.
  
  In the simplest case it can create an I2C register/memory device that connects to a bytearray (or similar buffer) and allows an I2C controller to read from and write into that bytearray. For more complex scenarios the I2CTarget class exposes a set of interrupts which can be acted upon by Python code, allowing an arbitrary I2C device to be created.

• The rp2 port now enables compressed error messages by default, which reduces firmware size by about 3000 bytes.

• The pico-sdk alarm pool is now used (again, instead of custom soft-time code) for power-saving delays, and lightsleep has been improved.

• The lwIP socket layer now has a queue of incoming UDP and raw packets (previously it only had room for one outstanding packet), allowing for more robust and efficient UDP protocols.

• Open drain mode has been fixed on RP2350 with more than 32 GPIOs, and support for hard IRQ timer callbacks has been added.

• Floating point support has been improved in a few ways

• Mpremote has had a few improvements.

Note that MicroPython includes its own copy of Pico SDK as a library which is still version 2.1.1 - That will probably be updated to use 2.2.0 in due course.


Downloads of latest 1.26 firmware UF2 are available from -

• Pico : https://micropython.org/download/RPI_PICO
• Pico W : https://micropython.org/download/RPI_PICO_W
• Pico 2 : https://micropython.org/download/RPI_PICO2
• Pico 2W : https://micropython.org/download/RPI_PICO2_W

• Other RP2 : https://micropython.org/download/?port=rp2

Statistics: Posted by hippy — Sun Aug 10, 2025 6:23 pm

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