Re: [U-Boot-Users] Want to add command in uboot

Avinash Vijayvergia wrote:

Hi

I am working on AT91SAM9260. I want to add one command "COM1 xxx" to the uboot command set. After typing this command on uboot prompt the string xxx should be transmitted out of COM1 and any reception on COM1 should be displayed on the debug terminal. Can some one suggest me how to do this?

AT91SAM9260 has no "COM1", this is a PC term.

Have you looked at the source code?

Have you read the documentation that comes with U-Boot? There is a whole directory full of useful information in ./doc

e.g. doc/README.commands

This file tells you about how to add your command. Also look at how all the other commands are done.

Then look in the ./common directory. There is a file called serial.c. Maybe this file contains function calls for the serial port?

Then take a look at the ./board/... files and see how other people send/receive data via the serial port.

Aras

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