diff options
Diffstat (limited to 'docs/Bootloaders.md')
| -rwxr-xr-x | docs/Bootloaders.md | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/docs/Bootloaders.md b/docs/Bootloaders.md index c6147567..a45c7ea6 100755 --- a/docs/Bootloaders.md +++ b/docs/Bootloaders.md @@ -164,12 +164,16 @@ bossac --port=/dev/ttyACM0 -b -U -e -w -v -R out/klipper.bin SAMD21 micro-controllers (Arduino Zero) ======================================= -This document does not cover the method to flash a bootloader to the -SAMD21. +The SAMD21 bootloader is flashed via the ARM Serial Wire Debug (SWD) +interface. This is commonly done with a dedicated SWD hardware dongle. +Alternatively, it appears one can use a Raspberry Pi with OpenOCD as a +programmer (see: +https://learn.adafruit.com/programming-microcontrollers-using-openocd-on-raspberry-pi/wiring-and-test +). -Unfortunately, it appears there are two common bootloaders available -for the SAMD21. One comes standard with the "Arduino Zero" and the -other comes standard with the "Arduino M0". +Unfortunately, there are two common bootloaders deployed on the +SAMD21. One comes standard with the "Arduino Zero" and the other comes +standard with the "Arduino M0". The Arduino Zero uses an 8KiB bootloader (the application must be compiled with a start address of 8KiB). This document does not cover |