iMXRT1010 SWD interface disabled

[ladislav_piroha]

We built a new hardware based on iMXRT1011 and spent several hours with SWD interface bring up. MCU refused re-programming requests over SWD interface. Then we found 10K pull_down resistor on JTAG_MOD (GPIO_AD_11) in RT1010 reference board schematics that enables SWD interface. Funny thing is that I could not find anything mentioned IMXRT1010RM datasheet.
Fuse DAP_SJC_SWD_SEL  is set to 0 so I would expect that SWD is enabled by default, but it's somehow overridden by GPIO_AD_11 and JTAG is selected when GPIO_AD_11 is floating.

[victorjimenez]

Hello, 

Thanks for your feedback, I will pass it to the documentation team. 

Also, when creating your own board besides using as reference the reference manual and the datasheet, I highly recommend you to use also the Hardware Development Guide for the RT1010. 

https://www.nxp.com/docs/en/user-guide/MIMXRT1010HDUG.pdf

Have a great day,

Victor

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