hi i am using lpc 2134 for my project.i have installed the real view Uvision3 kit. i have successfully run the hello world program. i now want to start my own project.i have included the lpc21**.h file in my program and also the appropriate startup.s file. i want to write a delay routine of 1200ms.which function should i call.also if i want to write serial port,timer functions or rtc functions which files should i include or which functions do i call. is there any function prototype defined for these. kindly reply thanks harshada