May I suggest that you use "SpeedTest.exe" that is packaged in one of the "speed_test" sub-folders?
Hi boont , Thanks for your suggest ,
I found a strange phenomenon about My problem !
Whenever I redownload puart_control App to 2073X , in this time ,
The First Serial Port not display any about ROM Library message,
and Central can continue long time(1 hour 2 hour ...N hour) to receive notification from peripheral.
After re-power 2073x board , The First Serial Port can display ROM message , but it can't receive notification long time from peripheral.
I do not understand is why when the first serial port is no way to print information ,
The Central Can receive notification long time from Peripheral.
I add this code in puart_control :
bleapp_trace_enable = 0;
the first serial port will close , and peripheral notification can run long time to central after re-power 2073X board.
but I still don't know why close first port , Can slove my problem?