RP2350

TinyUSB on Arduino Step 1: Identify yourself!

As I continue exploring MIDI on Arduino wth 32bit processors like the RP2350, it's clear that there are a lot of people interested in and working on sound and music applications with microcontrollers, including Phil Schatzman (Arduino MIDI, Arduino Audio Tools, and Synthesis Toolkit). While many of his projects don't use TinyUSB under-the-hood, his latest […]

MIDI 1.0 Example using RP2350 + Arduino

So, I've got a Seeed Studio Xiao RP2350. It's a minimalist RP2350 microcontroller board. Can it use its USB-C port to output MIDI 1.0 notes over USB? Yes. Here's how... I... The code that I used is: It compiles and loads on to the RP2350. I verified it using MTSL: Simple and easy. James Andrew […]

Exploring RISC-V Options: the RP2350 (Part 5 -- Disk Not Ejected Properly)

This is going to be a short post. Over the past couple of days I've been exploring the RP2350 and the Arduino IDE as a possible tool for teaching computer architecture. In the morning I've been turning on my macOS machine and have been faced with this: What's causing the issue? I'm not sure. But […]

Exploring RISC-V Options: the RP2350 (Part 4 -- Serial Monitor Tooling)

It's easy to get caught in weird assembler errors. This is made more difficult if you don't have a background debugger and need to use a boot loader / serial monitor to debug your system. Sometimes that's all you have. So here is a suggestion for a C++ and Assembler file pair to check to […]

Exploring RISC-V Options: the RP2350 (Part 3 -- No Drive to Deploy)

It was bound to happen. The Seeed Studio RP2350 is not connecting to the Arduino IDE. I'll go out on a limb here and chalk this up to the boot loader having an issue after I tried to get it to spit out serial data or maybe it was because I was trying to get […]

Exploring RISC-V Options: the RP2350 (Part 2 -- Inline ASM)

Now, let's blink an LED using the Arduino IDE and the Xiao RP2350. I'm going to use a really handy YouTube video by Xeno Kovah: Arch1005: RISC-V Assembly 13 Writing Assembly 02 GCC Inline Assembly. This opens up the possibility of using "extended" assembler to allow for the passing of values between your C and […]

Exploring RISC-V Options: the RP2350 (Part 1)

In engineering education there is an ever-present problem with technology-anchored pedagogy: when do you switch from current technology to the next one? Right now, the cool kid on the block in the RISC-V architecture. Will it be the next ARM or will it be the next PowerPC or MIPS? It's hard to tell. However, a […]