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Topic: burn arduino zero's bootloader to SAMD21 with STlink_v2 (Read 3106 times) previous topic - next topic

MartinL

Thanks for the update. Glad to hear you got it going.

The Segger JLink Mini Edu looks like a neat little programmer. (Not for profit use only though).

timtailors

Can you also use that  JLink Mini Edu within the Arduino IDO to flash a bootloader? Will it show up in the Arduino Software or is it only with AtmelStudio compatible?

ThellraAK

@seonghoon

Figure Figure 39-10 on page  862 of the datasheetdatasheet for samd21

indicates that SWCLK needs a 1K pullup resistor, I couldn't see it in your schematic.

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Note that a pull-up resistor on the SWCLK pin is critical for reliable operations.

Calico88

back to the topic, anyone succeed using STLink to burn the bootloader ??

westfw

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anyone succeed using STLink to burn the bootloader ??
I did a bit of web searching, and found mostly complaints that it doesn't work.
Apparently the STLink firmware doesn't support 16-bit writes over SWD, and a SAMD chip doesn't work when certain 16bit quantities are written 8 bits at a time.  Or something like that.

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