:Dhello, my dear friends:
recently, i was doing a project using dwm1000 module. I add the numbers of the anchor/tag to make it more fitable for my project. soon i find “dwt_isr()” which in the souce code dose’t come sometimes . result in the module stuck in the main while loop, dose anybody konw how to fix it ? Thank you so much !! my email 1134230930@qq.com. 
dear member,
what source code are you using? I would suggest you study the simple examples provided by Decawave, and start from there.
Z