@AloyseTech I've been tearing my hair out trying to program the Adafruit Feather M0 bootloader with the Segger JLink............I get the attached error. I have tried slowing the JLink speed down to 1000 kHz and even 500 kHz, but same error occurs.Rick
WARNING : CPU is running at very low speed (1328kHz).
"SAM-ICE is a JTAG emulator designed for SAMA5, SAM3, SAM4, SAM7 and SAM9 ARM® core-based MCUs and MPUs, including Thumb mode."
Any Atmel AT91 core supported, including ARM® Thumb® mode
Which CPUs are supported? SAM-ICE supports all ARM based Atmel microcontrollers.
SAM-ICE supports all ARM based Atmel microcontrollers.
Good Luck. Note that SAMD uses "SWD" rather than "real jtag." The SAM-ICE does claim to support SWD. And it says that various cortex M3 and M4 have had support added, so that's promising. I don't see any note about Cortex M0+, though, which is ... disturbing. (in theory, JTAG or SWD is relatively independent of actual core.)I can say that Atmel Studio won't let you configure a debug tool for a project unless that tool is actually connected to your computer :-((it looks like some folks over on AVR-Freaks have gotten it to work...)