Problems about labview toolkit for Ti's DSP

[specETO]

Hello. Now I am using Labview tool kit to transfer data between labview and 6713DSK board.Now I have problems in RTDX. Becasue it looks like RTDX slow down my program. I use Timer 0 to trigger a ISR every 0.05 ms (20kHz), so it's a Hardware Interrupt(HWI). This ISR will call a STATCOM control function periodically (20kHz). Also will call RTDX in a very low frequency 33.3 Hz. The RTDX is supposed not to interrupt this ISR because it's a software interrupt and it's priority is lower than the HWI, right? But it do affect my ISR.Because the control function's frequency is slow down to 17.7kHz!! I disable all the RTDX functions and test the program again. Then I got the correct result: the frequency of the control function is exactly 20kHz. I check the timer 0 output and it's very accurate: 20kHz. So it should be RTDX influence my program. But it's very strange because the HWI should have highest priority, How can RTDX infect it? In the attachment I include my cdb file and the main function. Can you help me to find out why RTDX affect my program? And what kind of interrupt the RTDX is. Thank you.   

[Ame_G]

Hello, I am not that familiar with 6713 processor. I would definitely check TI with those questions as the questions are more related to the hardware than the LABView toolkit you are using.

[SPEC]

Yes. It's because DSP's BIOS memory setup/. After I move the BIOS code inside IRAM instead of SDRAM. The System runs great.

[danial]

specETO,

Hello. Now I used Labview toolkit to transfer data between labview and 6711DSK board. Can you tell me how to set up the
frequency of RTDX in DSP and Labview? i tried the TI DSP Test toolkit examples. i just received the data transmitted from DSP
C6711 DSK in about 1 Hz. How to set the frequency of RTDX in Labview and DSP?Thank you very much and I am looking forward to
hearing from you.

regards,

Danial 
2005/10/20