The Cortex M0/M0+ and M1 are actually from the v6 architecture and can be considered a subset for the v7 profile. The v7 architectures lists 3 different profiles: If you look around you'll actually see quite a few naming conventions. They can license the core, maximize power efficiency, add some silicone for the camera sensor interface, and build the entire system onto a chip. A company might decide they want to build a camera that uses the ARM core. The cores are then put into CPUs, microcontrollers, SOCs (System on Chip), etc. Arm Holdings does the design work for the cores and holds the patents/copyright/other legal things and then licenses the design out. They are used in everything from the Redboard Turbo to the Raspberry Pi to most cellphones, but that's a large range of performance. Let's start with what an ARM processor is. You still need to add a bootloader to use them with Arduino, and since ARM programmers are also a little more complicated than AVR programmers you'll want to invest in a stand alone programmer instead of trying to use the Uno you have laying around.

One advantage of the newer chips is that they generally do not need a USB-to-serial adapter instead they have USB built in (at least the ones we are using do). But now the market is maturing and we are looking at a lot more ARM chips. We've programmed ATMega328s (and 168s, and 8s before that), written tutorials, and hacked all sorts of fun projects.

SparkFun has been a fan of Arduino for a long time. Installing an Arduino Bootloader tutorial. If you are using an AVR microcontroller with an Arduino bootloader using ICSP pins, you'll need to head on over to the J-Link EDU Mini or J-Link EDU Base) to connect to the port.

You will need a dedicated programmer (i.e.

Heads up! This tutorial was written for ARM microcontrollers with SWD or JTAG pins.

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