I didn't see any mention of flash encryption, firmware authentication, or other code security features. Kinda makes me wonder if they'll be able to sell these microcontrollers to traditional commercial users, or if it's just going to be for the hobby electronics market?
EDIT: as you can imagine... I've been thinking quite a lot these last couple weeks about how Teensy 4 will eventually support these security features while working on the stand-alone bootloader chip release.
How about bootloader firmware which checks the digital signature of the flash upload?
..with "TeensyPie".."Run your Pico programs with 1GHZ"
..and here is audio:
https://github.com/raspberrypi/pico-extras
Wow, cool! They can do I2S through GPIO!
can or must?
I don't understand what this means? Didn't see anything like that in the datasheet.
The SWD does have a feature to allow more than 1 (perhaps up to 7) of these chips to be accessed on the same SWD signals.
Debugging using another Raspberry Pi Pico
It is possible to use one Raspberry Pi Pico to debug another Pico. This is possible via picoprobe, an application that allows a Pico to act as a USB → SWD and UART converter. This makes it easy to use a Pico on non-Raspberry Pi platforms such as Windows, Mac, and Linux computers where you don’t have GPIOs to connect directly to your Pico. Full instructions on how to use Picoprobe to do this are available in our 'getting started' documentation.
Though given the price, I wonder if we are going to have the same problem that we have with the Pi Zero? Namely, you can only order them in limited quantities, and the sellers had times when they had no stock to sell.
My local MicroCenter does have a bunch of Pi Zero W's for sale now, but their pricing is $9.99 for quantity one, $12.99 for quantities 2-10, and $14.99 for 11 or more. They still have a bunch of Pi Zero's without the W (i.e. no network) for $5 unit 1 price ($10/pi for multiples).
When it was announced, I wondered if the original Pi Zero (at $5) was actually actually costing the Pi Foundation more to build than it cost (or at least was break even). I believe it was created to further the Raspberry Pi foundation educational goals to reduce the cost of entry for hackers. This is a noble goal, but it can have issues if it is successful, and people outside of the niche want to use it. I believe this happened with the bitcoiners that wanted to buy bunches of them. However, at that price point, few of the commercial sellers (Newark/Element 14, etc.) could carry it, since there was no margin. The hobby companies (Adafruit, Sparkfun, Pi Supply, ModMyPi, etc.) would sell it in hopes that you buy accessories that have greater profit margins, but they often had limits like 1/customer. That is great for the hacker alone in his/her bedroom, but not as great for people wanting to use it in bigger projects.
It uses micro Python instead of Circuit Python. I wonder if micro Python will become as fleshed out as CP has become in the Adafruit world.
So it will be interesting to see if it succeeds.
SFE will sell you 100 at $4/each
It don't mention any FIFO for the I2S module @ STM32F401