While trying to use the MikroBUS socket for the DA14531 on the "Development Kit-Pro" board I did not get the same result as with the "Development Kit-USB". After some searching, I have found that the P21 on J17 is left unconnected, confirmed by the published schematics. I think this is a hardware bug because I don't see any reason to do so.
I solvedt this problem by soldering a wire between P21 on J17 and P21 on J2. See the photo in the DevKitPro-P21.pdf file.
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Hi Jean-Christian,
感谢反馈。让我查一下the HW Team and let you know.
Thanks, PM_Dialog
Hi Jean-Christian,
My apologies for my late response. You are right - this is known limitation and we will add it in the user manual as well. Again many thanks for your valuable feedback. It is more than welcome!
Thanks, PM_Dialog