USB Library debug using Keil V4.60

lpcware — Wed, 15 Jun 2016 19:44:54 GMT

Content originally posted in LPCWare by kwinchell on Tue Mar 26 06:01:06 MST 2013
I am using the Keil uvision SDK 4.60.0.0
I am trying to understand how the USB V0.98 is functioning.
I built the Library for the MCB11U10 board to run the Generic HID Example.
I wanted to step through the process of CALLBACK_HID_Device_CreateHIDReport() getting called.
In the debugging session, I found it gets called by HID_Device_USBTask().

While examining the variables using the Keil debugger, the variables clearly had the wrong values.
After closer examination, I noticed the debugger was using the wrong addresses for the variables.

This initial SP was 0x10000430, and 0x10000400 on entry to HID_Device_USBTask(). Here is what I found:

Variable Debug Adr SP Access Act Adr
=======================================
ReportId 100003FC   SP + 18   10000418
ReportINSize 003F8   SP + 14   10000414
ForceSend 100003F4   SP + 10   10000410
StatesChanged 3F0   SP + 0C   1000040C

It is like the debugger is using the wrong value for its SP.

Any Ideas?

Re: USB Library debug using Keil V4.60

lpcware — Wed, 15 Jun 2016 19:44:54 GMT

Content originally posted in LPCWare by kwinchell on Wed Mar 27 05:54:32 MST 2013
I was able to fix the problem be changing the optimization from -O0 to -O1. I just upgraded to Kiel uVision 4.70, but have not tried it yet.

It turns out this issue has nothing to do with the NXP library.

LPC MicrocontrollersのトピックUSB Library debug using Keil V4.60

USB Library debug using Keil V4.60

Re: USB Library debug using Keil V4.60