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Program a SAMD21 with OpenOCD and a JLINK
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| # Program a SAMD21 part with a bootloader using a JLINK / J-LINK | |
| # 0a. Wire up your device with SWD & SWC pins to JLINK | |
| # 0b. Also wire up Gnd and Power to Gnd & VTref on JLINK | |
| # 0c. And separately supply power to device | |
| # 0d. Iif you don't have openocd installed, then "brew install openocd" | |
| # | |
| # 1. Put this file in a directory | |
| # 2. Get a samd21 bootloader file.bin and put it in this directory renamed as "bootloader.bin" | |
| # 3. Unplug and replug in the JLINK (to reset it) | |
| # 4. Then do "openocd -f ./openocd-sams21.cfg" and stand back | |
| source [find interface/jlink.cfg] | |
| transport select swd | |
| source [find target/at91samdXX.cfg] | |
| init | |
| reset | |
| halt | |
| program bootloader.bin verify reset | |
| shutdown |
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Thanks. The link now works. Too bad that its content has an important dead link that points to https://roamingthings.de/posts/use-j-link-to-change-the-boot-loader-protection-of-a-sam-d21/. Fortunately, the relevant info of the now dead site was extracted and listed in the Hackaday site.