USB Superspeed Peripherals

[Anonymous]

I'm trying to set the intf parameters for S-Port0 as follows:

intfParams.resetGpio = 0xFF;

intfParams.rstActHigh = CyFalse;

intfParams.cardDetType = CY_U3P_SIB_DETECT_DAT_3;

intfParams.writeProtEnable = 1;

intfParams.lowVoltage = CyFalse;

intfParams.voltageSwGpio = 0xFF;

intfParams.lvGpioState = CyFalse;

intfParams.useDdr = CyTrue;

intfParams.maxFreq = CY_U3P_SIB_FREQ_52MHZ;

intfParams.cardInitDelay   = 0;

stat = CyU3PSibSetIntfParams (CY_U3P_SIB_PORT_0, &intfParams);

This is returning CY_U3P_ERROR_BAD_ARGUMENT and I don't understand why. Is there something I'm overlooking?

[Keerthy · Accepted solution]

Hi Caleb,

As per your code snippet, you are enabling the write protection on the storage port 0. GPIO used for write protection detection on Storage port 0 is GPIO 43. You need to configure this GPIO as simple GPIO in your firmware. Else the API CyU3PSibSetIntfParams will fail.

Please have a look.