Tool/software: TI C/C++ Compiler
As shown in the screenshot1, the USB 2.0 is good while no DMD is detected. (Discovery D4100 Explorer)
I also tried GetDevNum(0) in C++, and it returned 1, which means USB did connected, but I use GetDMDTYPE(0) command in code, the return number is 15! That means no DMD is detected. Shown in screenshot2.
From the DLP® DiscoveryTM 4100 Development Platform, the controller board, I tried some simple operations. It works, so there is no connection and technical problem between DMD and DLP® DiscoveryTM 4100 Development Platform. 
