$7 wireless RISC-V Raspberry Pi Pico 2
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Raspberry Pi has launched a version of its wireless Pico board with its latest RP2350 combined RISC-V and ARM microcontroller.
The Raspberry Pi Pico 2 W is built around the new RP2350 microcontroller with the tried and tested wireless modem from the original Pico W, and is priced at $7, up form $5 for the non-wireless version.
The board uses the CYW43439 modem from at Infineon Technologies for 2.4GHz 802.11n wireless LAN and Bluetooth 5.2 connectivity, and is supported by C and MicroPython libraries. The RP2350, launched in August, 2024, also now supports the Rust language.
“When we launched our debut microcontroller, RP2040, way back in 2021, we couldn’t have imagined the incredible range of products that would be built around it, or the uses that the community would put them to,” said Eben Upton, CEO of Rawspberry Pi.
“RP2350 builds on this legacy, offering faster cores, more memory, floating point support, on-chip OTP, optimised power consumption, and a rich security model built around Arm’s TrustZone for Cortex-M.”
A wireless implementation means that security is even more important, and the RP2350 has a security architecture built around ARM TrustZone for the Cortex-M cores. This includes signed boot, 8KB of on-chip antifuse one-time-programmable (OTP) memory, SHA-256 encryption acceleration and a hardware true random number generator (TRNG)
RP2350 also includes a pair of open-hardware Hazard3 RISC-V cores which can be substituted at boot time for the Cortex-M33 cores. The boot ROM can auto-detect the architecture for which a second-stage binary has been built and reboot the chip into the appropriate mode. All features of the chip, apart from a handful of security features, and the double-precision floating-point accelerator, are available in RISC-V mode.
“Many of the projects and products that people build on top of our platforms — whether that’s our Linux-capable Raspberry Pi computers, our microcontroller boards, or our silicon products — answer to the general description “Internet of Things”. They combine local compute, storage, and interfacing to the real world with connectivity back to the cloud,” said Upton.
“We’re very pleased with how Pico 2 W has turned out. And, where the Pico 1 series ended with Pico W, we have a few more ideas in mind for the Pico 2 series,” he added.
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