The problem in using "Digital output" block (for C28x3x processors)

Hi,

I have already generated a square wave signal using Matlab simulation. I intend to transfer the signal to a DSP (F28335 eZdsp)board. To do this job, in the simulation, I connected the generated square wave signal to a "Digital output" block (for C28x3x processors)and in the block I selected GPIO0 to active the GPIO0 pin of the board which has been considered for PWM1 by manufacturer. The compiling process and transferring process are done completely without any error, but no signal is appeared on the hardware.

Please note that with the "ePWM" block (for C2833x processors), as this block generates itself square wave signal, the signal can be transferred on DSP. But I can not use this block, since I want to shift the square wave signal and manipulate it.

Please let me know where the problem is in the "Digital output" block that can not transfer the signal on the hardware?

Thank a lot, Regards Foad