Dear All,

i have written driver for USB function(device) in code warrior for MPC8280,i am facing problem in configuration stage,when i connect it to the host PC through USB cable .device descriptor is happening host is setting the address but device configuration is not happening properly...it hangs in USB busy handler.

below is the output of the snippet in hyperterminal for usb debugging

Debug statements

GetDescriptor request length = 0x40 Device Descriptor... In TX bd status = 3ec0 In TX USB event register = 109 Recieved PID token = 0xbc40 bd status = 3ec0 USB:SetAddress 10 bd status = 3800 In TX bd status = 3ac0 In TX USB event register = 108 GetDescriptor request length = 0x12 Device Descriptor... In TX bd status = 3ec0 In TX USB event register = 109 Recieved PID token = 0xbc40 bd status = 3ec0 In USB_BUSY HANDLER : 0x108 In TX bd status = 3ec0 In TX USB event register = 10c Recieved PID token = 0xbc40 bd status = 3ec0 In USB_BUSY HANDLER : 0x0 In TX bd status = 3ec0 In TX USB event register = 10d Recieved PID token = 0xbc40 bd status = 3ec0 In USB_BUSY HANDLER : 0x108 In TX bd status = 3ec0 In TX USB event register = 108 Recieved PID token = 0xbc40 bd status = 3ec0

it hangs in usb busy handler , i think am missing somthing in PID data toggling synchronization between MPC8280 and host.

please help me out to sort this issue....

am testing in FreeScale Code Warrior IDE

waiting for the reply ASAP

Regards, Gurumurthy