Yup, they are compatible... if using are using the SDK, you need 2.1.0 or later, but just because as there was an incorrect check in SDK before that for the chip revision == 2 not >= 2They are compatible.I read in the announcement of the A4 stepping of the RP2350 that there is an accompanying update to the Pico SDK. Does this mean that there are binary incompatibilities between software written for the A2 stepping of the RP2350 and the A4 (and A3) steppings of the RP2350? I ask because I maintain software for the RP2350 that does not make use of the Pico SDK, specifically zeptoforth, as it is written in assembly and Forth. This is a significant concern for me because if there are binary incompatibilities then I may have to maintain multiple builds of zeptoforth, for the A2 and A3/A4 steppings, on top of the builds that I currently maintain for the RP2350, the RP2040, and a variety of STM32 MCU's.
Statistics: Posted by kilograham — Wed Jul 30, 2025 2:12 pm