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I want someone to help me from where i can study the firmware part. Also the sample code with explanation a simple code to just display the charecters to lcd would be enough. Also i am going to wright the linux drivers for the same functionalities which i would be exporting.
To the OP:
Since you said that, you are capable to write the Linux drivers, I assume you are familiar with GNU Tool-chain. And you said the MCU is LPC2148. Then I think LPCUSB project is good for you.
Check this: LPC214x USB stack
sourceforge.net/.../
lpcusb is a USB core stack for the built-in USB device of LPC214x microcontrollers. It handles the hardware interface and USB enumeration/configuration. Included are usage examples like USB joystick HID, USB virtual COM port and USB mass storage on SD-ca
( Don't know how to contact the authors of LPCUSB. )
Sample Code Bundle for LPC213x/LPC214x Peripherals using Keil's µVision (Dec 18, 2008)
ics.nxp.com/.../code.bundle.lpc213x.lpc214x.uvision.zip