>but last time I checked the options were poorly-supported, expensive, and sparse.
I recommend checking again, as growth has been exponential.
>Are there credible RISC-V based replacements for the Raspberry Pi, the STM32 blue/black pill, and the Cortex chips in phones?
I'd recommend a look at the market of publicly available cores[0], some lists of chips[1] and boards[2][3], and about MCUs specifically[4].
The one specific recommendation I'll make is to get VisionFive 2[5], the first mass-production RISC-V SBC from StarFive, with strong standards compliance and effort to upstream driver support[6].
I recommend checking again, as growth has been exponential.
>Are there credible RISC-V based replacements for the Raspberry Pi, the STM32 blue/black pill, and the Cortex chips in phones?
I'd recommend a look at the market of publicly available cores[0], some lists of chips[1] and boards[2][3], and about MCUs specifically[4].
The one specific recommendation I'll make is to get VisionFive 2[5], the first mass-production RISC-V SBC from StarFive, with strong standards compliance and effort to upstream driver support[6].
0. https://riscv.org/exchange/?_sft_exchange_category=core,core...
1. https://muxup.com/2023q1/commercially-available-risc-v-silic...
2. http://krimsky.net/articles/riscvsbc.html
3. https://hackerboards.com/?cpu_architecture=RV64
4. https://codeberg.org/20-100/Awesome_RISC-V/raw/branch/master...
5. https://www.kickstarter.com/projects/starfive/visionfive-2
6. https://rvspace.org/en/project/JH7110_Upstream_Plan