Hi, I need help about Pmod I/O. I have a Zedboard and I use GPIO to control some pmod pins to output voltage signal. I use SDK and c language to achieve it, but it seems like that the each time I use "XGpio_DiscreteWrite" it cost me more than 0.1 microsecond, i.e., it changes voltage with frequency much less than 10MHz. This is really slow comparing to its clock frequency. I have noticed that in the embed topic there are arguments about PS, PL side but I have totally no idea about how to improve the performance.
On the other hand, I also need to use another pmod pin to "trigger" my board, i.e., when I send a high voltage to the pmod pin, the program started to work. It's really similar to the interrupt example in the tutorial, but I still cannot achieve it.
Question
ZYLL
Hi, I need help about Pmod I/O. I have a Zedboard and I use GPIO to control some pmod pins to output voltage signal. I use SDK and c language to achieve it, but it seems like that the each time I use "XGpio_DiscreteWrite" it cost me more than 0.1 microsecond, i.e., it changes voltage with frequency much less than 10MHz. This is really slow comparing to its clock frequency. I have noticed that in the embed topic there are arguments about PS, PL side but I have totally no idea about how to improve the performance.
On the other hand, I also need to use another pmod pin to "trigger" my board, i.e., when I send a high voltage to the pmod pin, the program started to work. It's really similar to the interrupt example in the tutorial, but I still cannot achieve it.
Thanks for your help!
Link to comment
Share on other sites
14 answers to this question
Recommended Posts
Archived
This topic is now archived and is closed to further replies.