CCS/TM4C1294NCPDT: TM4C1294NCPDT

Hi Jayasankar,

The problem is printf in the "hello" task. The ASCII characters are written to a CIO buffer. When the buffer is full or a '\n' character is written, a breakpoint is hit. CCS reads the contents, resumes the target and writes the characters to the CCS console. This kills real-time. Remove the printf and it works as expected.

This is why we recommend System_printf (with SysMin set as the support proxy in the .cfg file). The characters stay in an internal buffer that can be viewed via Tools->ROV. Or if you want it on the CCS console, call System_flush (remember this will impact realtime though).

Another thing I noticed was you are manually setting up the timer. I removed the Hwi.create in the .cfg and added this instead
var timer0Params = new Timer.Params();
timer0Params.instance.name = "timer2";
timer0Params.period = 250;
Program.global.timer2 = Timer.create(2, "&timer", timer0Params);

Then in the source file, I had this for the timer function. I removed all the driverlib calls to set up the timer also (e.g. I commented out the call to hardware_init).

Void timer(UArg arg0)
{
Semaphore_post(semaphore0);
}

Todd