/* Entry function for the AppThread. */
void
ApplnThread_Entry (
uint32_t input)
{
CyBool_t isPresent = CyFalse;
CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
/* Initialize the debug logger. */
CyFxApplnDebugInit ();
/* Initialize the example application. */
status = CyFxApplnInit();
if (status != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (2, "Application initialization failed. Aborting.\r\n");
CyFxAppErrorHandler (status);
}
for (;;)
{
CyU3PThreadSleep (100);
if (isPresent != glIsPeripheralPresent)
{
/* Stop previously started application. */
if (glIsApplnActive)
{
CyFxApplnStop ();
}
/* If a peripheral got connected, then enumerate
* and start the application. */
if (glIsPeripheralPresent)
{
status = CyU3PUsbHostPortEnable ();
if (status == CY_U3P_SUCCESS)
{
CyFxApplnStart ();
}
}
/* Update the state variable. */
isPresent = glIsPeripheralPresent;
}
/* Since the test needs to be done from a thread,
* this function is called at fixed interval. */
if (glHostOwner == CY_FX_HOST_OWNER_MSC_DRIVER)
{
CyFxMscDriverDoWork ();
}
}
}
/* This function will be called periodically from
* the application thread. If there is a change in
* the peripheral status, this function will start
* or stop the application accordingly. */
void
CyFxUsbHostDoWork ()
{
uint32_t upTime = 0, epStatus = 0;
static CyBool_t isPresent = CyFalse;
CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
static uint32_t rxCount = 0;
static uint32_t txCount = 0;
if (isPresent != glIsPeripheralPresent)
{
if (glDoHnp)
{
/* Complete the HNP. */
CyFxHostHnp ();
glDoHnp = CyFalse;
}
else
{
/* Stop previously started application. */
if (glIsApplnActive)
{
CyFxApplnStop ();
}
/* If a peripheral got connected, then enumerate
* and start the application. */
if (glIsPeripheralPresent)
{
status = CyU3PUsbHostPortEnable ();
if (status == CY_U3P_SUCCESS)
{
CyFxApplnStart ();
}
}
}
/* Update the state variable. */
isPresent = glIsPeripheralPresent;
}
if (glIsApplnActive)
{
if ((rxCount != glDMARxCount) || (txCount != glDMATxCount))
{
CyU3PDebugPrint (4, "Host mode: transferred %d buffers, received %d buffers.\r\n",
glDMATxCount, glDMARxCount);
rxCount = glDMARxCount;
txCount = glDMATxCount;
}
/* OTG status polling. */
upTime = glTimerCount * CY_FX_OTG_POLL_INTERVAL;
glTimerCount++;
if ((glIsHnpSupported) && ((upTime % CY_FX_OTG_STATUS_POLL_INTERVAL) == 0)
&& (!CyU3POtgIsHnpEnabled ()) && (!glIsHnp) && (!glDoHnp))
{
/* Get the OTG status. */
CyFxFormatSetupRqt (glSetupPkt, 0x80, CY_U3P_USB_SC_GET_STATUS,
0, CY_U3P_USB_OTG_STATUS_SELECTOR, 1);
status = CyU3PUsbHostSendSetupRqt (glSetupPkt, glEp0Buffer);
if (status == CY_U3P_SUCCESS)
{
status = CyU3PUsbHostEpWaitForCompletion (0, &epStatus,
CY_FX_HOST_EP0_WAIT_TIMEOUT);
}
/* Check if the session request flag is set. */
if ((status == CY_U3P_SUCCESS) && (glEp0Buffer[0] & 0x01))
{
/* Initiate the HNP process. */
CyFxFormatSetupRqt (glSetupPkt, 0x00, CY_U3P_USB_SC_SET_FEATURE,
CY_U3P_USB2_OTG_B_HNP_ENABLE, 0, 0);
status = CyU3PUsbHostSendSetupRqt (glSetupPkt, glEp0Buffer);
if (status == CY_U3P_SUCCESS)
{
status = CyU3PUsbHostEpWaitForCompletion (0, &epStatus,
CY_FX_HOST_EP0_WAIT_TIMEOUT);
}
if (status == CY_U3P_SUCCESS)
{
glIsHnp = CyTrue;
/* Stop all active transfers. */
CyU3PDmaChannelDestroy (&glHostInCh);
if (glHostInEp != 0)
{
CyU3PUsbHostEpRemove (glHostInEp);
glHostInEp = 0;
}
CyU3PDmaChannelDestroy (&glHostOutCh);
if (glHostOutEp != 0)
{
CyU3PUsbHostEpRemove (glHostOutEp);
glHostOutEp = 0;
}
/* Remove EP0. and disable the port. */
CyU3PUsbHostEpRemove (0);
glHostEpSize = 0;
/* Suspend the USB bus and wait for the device to disconnect. */
status = CyU3PUsbHostPortSuspend ();
}
}
if (status != CY_U3P_SUCCESS)
{
glIsHnp = CyFalse;
glIsHnpSupported = CyFalse;
CyU3PUsbHostEpAbort (0);
CyU3PDebugPrint (4, "HNP disabled due to GET_STATUS failure.\r\n");
}
}
}
}