Writing a task in VxWorks

Question

I am trying to understand how can I write tasks for VxWorks. I have VxWorks on a board that is mounted on a development board.

I can access the board through Putty and a serial terminal connected to the UART of the system. How can I write other tasks (maybe to communicate with other UARTs or other Serial Interfaces) ?

And how do I know where to find the documentation describing how I can access those serial interfaces? (for example write/read methods, which file to include etc)*

Thank you

Answer 1

VxWorks is cross development environment, so you need a licensed development system on Windows or Linux desktop to create applications.

Then you load the compiled code on the target reference board as process/RTP or LKM/DKM. How you get it there varies by board: FTP, TFTP, removable USB or SD card....

At the C shell on booted system you can start a task in the kernel context with any public symbol. But if your working with deployed system, it shouldn't have the C shell, that's a serious security risk :)

Try..

->  sp printf, "\nHello VxWorks World!\n"