Rasberry pi pico

[Vadim18]

My congratulations, dbanner!
Now you need only some small plastic enclosure to protect that Pico. MicroPython is just simple like Basic, but perspective and growing language. There are many instructions on youtube.

[useus]

I found this article that can be very interesting to those who are experts, even in the comments there are several innovations.

https://www.instructables.com/Arbitr...pberry-Pi-Pic/

[eddiebyrom97]

Raspberry Pi Pico is a low-cost, high-performance microcontroller board with flexible digital interfaces, built on silicon designed at Raspberry Pi. Key features include: RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom. Dual-core ARM Cortex M0+ processor, flexible clock running up to 133 MHz.

[tpet93]

What I would like to see is someone code the PI pulse sequence using interrupts and the internal timer. It's fairly obvious that you can generate these pulses using a straightforward linear sequence, but this is very restrictive if you want the detector to perform other duties.

Since the Raspberry Pi Pico is such a new device, there is very little information available. The Official Raspberry Pi Pico Guide (MicroPython on Raspberry Pi Pico) seems to be aimed at children, as it's very cartoon-like and spends a lot of time on extremely basic stuff, such as how not to burn yourself with a soldering iron. In a similar way to the Hackspace magazines, it lacks any useful content. Often you start reading a section that shows some promise, and then it abruptly ends at the most interesting point.

I haven't delved into the RPI Pico in any real detail yet, but I suspect that sub-microsecond timing is going to be a big issue when using MicroPython. C/C++ is supposed to be supported, but (again) there is very little information available. I've heard that the Arduino development team are planning to support the RP2040 in their own hardware with programming via the Arduino IDE, so it may be worth waiting around for that to happen.

Ive been looking at the rp2040 for a bit.

i believe the above code is "assembly" that runs on one of the 8 pio state machines, essentially a very small core that can be programmed to control pins in quite complex ways without running on the main cores. This seems to replace the more traditional timers.
Its a bit of a shift from the standard uC ways but appears to have a lot of potential.

[Olly]

Ive been looking at the rp2040 for a bit.

i believe the above code is "assembly" that runs on one of the 8 pio state machines, essentially a very small core that can be programmed to control pins in quite complex ways without running on the main cores. This seems to replace the more traditional timers.
Its a bit of a shift from the standard uC ways but appears to have a lot of potential.

The PIO's are programmed using assembler and are capable of very exact timing with 8nSec resolution when running at 125MHz processor speed.
They can operate completelty independantly of the main code which runs on 2 processor cores. I would steer clear of using Python for the main code as it is a lot slower than 'C' which has a very well defined SDK and set of libraries. (You can even use C++ if that's your bag, but it's not as well documented)