Fixing Blackmagic Probe Cortex-M0+ detection for an Atmel SAMD21 chip

I’ve been using the 1BitSquared Blackmagic Probe for a couple weeks now (see my earlier post about setting up the device here) and overall it’s been a pretty useful tool. Unfortunately, earlier this week it suddenly quit breaking at main after trying to upload code. I fired up GDB to connect and a monitor swdp_scan … Read more