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Hello friends,
I am trying to implement USB virtual comm on lpc2148 board
I am referring AN801 USB Virtual comport.zip code
which has following files
Demo.c - main entry of the sample software Demo.h - definitions and include file for the main entry Startup.s - boot-up file Type.h - various type definition Usb.h - USB descriptor data structures and class definitions Usbcfg.h - USB configuration header file Usbcore.c - USB standard class request, USB command processor Usbcore.h - definition and include file for usbcore.c Usbdesc.c - USB descriptor configuration Usbdesc.h - definition and include file for usbdesc.c Usbhw.c - USB hardware initialization and lower-level driver APIs Usbhw.h - prototyping for usbhw.c Usbreg.h - hardware USB block register definitions for LPC214x Vcomuser.c - Virtual COM port configuration and physical COM port APIs Vcomuser.h - endpoint event definition and include files for vcomuser.c Virtualcom.prj - Keil uVision III project file
I am stuck in demo.c if ( Data2Host0 || Data2Host1 ) to find out the problem i put few print statements in some functions when i connect my device to usb the pc is not giving any warning like usb detected... please help me....
I am using AN801 USB Virtual Com port code
I said, it isn't a firmware problem, but PC side. When the PC driver would be installed without error, the driver should put Set_Configuration request (Select_Configuration URB) at enumeration. As your LPC chip doesn't see Set_Configuration, there should be trouble on driver installation.
Check Device Manager on your PC.
Tsuneo
Dear Tsuneo chinzei, am working on IAR evalution board (LPC2148) for USB virtual com. The sample code from keil is not working in this board.
Let me know wether it'll work or not, if possible what are the changes to be done?
wait 4 ur reply
thanking you....