2 Replies Latest reply on Nov 15, 2016 10:43 PM by userc_39491

    Disbaling SPI



      I have a Fx3 board connected to FPGA and on boot, we download FPGA image through SPI interface. In firmware, we disable SPI interface through CyU3PDeviceConfigureIOMatrix() once FPGA download is completed. I need to pull up GPIO54 (which is used by SPI)but disabling SPI and pulling up GPIO54  using CyU3PDeviceConfigureIOMatrix() API puts GPIO 54 in tristate for around 600 usec which FPGA doesnot like.


      Is there a way i can pull up this line GPIO 54 before disabling SPI. I tried calling CyU3PGpioSetSimpleConfig() but it returns failure as GPIO is used by SPI? 


      If not...


      Is there a way i reduce this time? 




      Thanks in advance