//*****************************************************************************
//
//! This function sets one of the \b USBLIB_FEATURE_ requests.
//!
//! \param ui32Index is the index of the USB controller to access.
//! \param ui32Feature is one of the \b USBLIB_FEATURE_ defines.
//! \param pvFeature is a pointer to the data for the \b USBLIB_FEATURE
//! request.
//!
//! This function sends the requested feature request to the USB library.
//! Not all features are supported by all devices so see the documentation
//! for the \b USBLIB_FEATURE_ to determine if the feature is supported.
//!
//! \return Returns \b true if the feature was set and \b false if the feature
//! is not supported or could not be changed to the requested value.
//
//*****************************************************************************
bool
USBOTGFeatureSet(uint32_t ui32Index, uint32_t ui32Feature, void *pvFeature)
{
bool bRetCode;
bRetCode = true;
//
// Pass this on to the host and device and indicate false if
// either fails.
//
if(USBDCDFeatureSet(ui32Index, ui32Feature, pvFeature) == false)
{
bRetCode = false;
}
if(USBHCDFeatureSet(ui32Index, ui32Feature, pvFeature) == false)
{
bRetCode = false;
}
return(bRetCode);
}
//*****************************************************************************
//
// The main application loop.
//
//*****************************************************************************
int
main(void)
{
uint32_t ui32SysClock, ui32PLLRate;
#ifdef USE_ULPI
uint32_t ui32Setting;
#endif
//
// Set the application to run at 120 MHz with a PLL frequency of 480 MHz.
//
ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN | SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_480), 120000000);
//
// Set the part pin out appropriately for this device.
//
PinoutSet();
#ifdef USE_ULPI
//
// Switch the USB ULPI Pins over.
//
USBULPIPinoutSet();
//
// Enable USB ULPI with high speed support.
//
ui32Setting = USBLIB_FEATURE_ULPI_HS;
USBOTGFeatureSet(0, USBLIB_FEATURE_USBULPI, &ui32Setting);
//
// Setting the PLL frequency to zero tells the USB library to use the
// external USB clock.
//
ui32PLLRate = 0;
#else
//
// Save the PLL rate used by this application.
//
ui32PLLRate = 480000000;
#endif
//
// Initialize the connection status.
//
g_sStatus.bConnected = false;
//
// Initially there are no modifiers set.
//
g_sStatus.ui32Modifiers = 0;
//
// Enable Clocking to the USB controller.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_USB0);
//
// Enable Interrupts
//
ROM_IntMasterEnable();
//
// Initialize the USB stack mode and pass in a mode callback.
//
USBStackModeSet(0, eUSBModeHost, 0);
//
// Register the host class drivers.
//
USBHCDRegisterDrivers(0, g_ppHostClassDrivers, g_ui32NumHostClassDrivers);
//
// Open an instance of the keyboard driver. The keyboard does not need
// to be present at this time, this just save a place for it and allows
// the applications to be notified when a keyboard is present.
//
g_psKeyboard = USBHKeyboardOpen(KeyboardCallback, 0, 0);
//
// Initialize the power configuration. This sets the power enable signal
// to be active high and does not enable the power fault.
//
USBHCDPowerConfigInit(0, USBHCD_VBUS_AUTO_HIGH | USBHCD_VBUS_FILTER);
//
// Tell the USB library the CPU clock and the PLL frequency. This is a
// new requirement for TM4C129 devices.
//
USBHCDFeatureSet(0, USBLIB_FEATURE_CPUCLK, &ui32SysClock);
USBHCDFeatureSet(0, USBLIB_FEATURE_USBPLL, &ui32PLLRate);
//
// Initialize the USB controller for Host mode.
//
USBHCDInit(0, g_pui8HCDPool, sizeof(g_pui8HCDPool));
//
// Initialize the GUI elements.
//
UIInit(ui32SysClock);
//
// The main loop for the application.
//
while(1)
{
//
// Call the USB library to let non-interrupt code run.
//
USBHCDMain();
//
// Call the keyboard and mass storage main routines.
//
KeyboardMain();
}
}
//*****************************************************************************
//
// main routine.
//
//*****************************************************************************
int
main(void)
{
tLPMFeature sLPMFeature;
//
// Run from the PLL at 120 MHz.
//
g_ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN | SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_480), 120000000);
//
// Configure the device pins.
//
PinoutSet();
//
// Configure the UART.
//
UARTStdioConfig(0, 115200, g_ui32SysClock);
//
// Initialize the display driver.
//
Kentec320x240x16_SSD2119Init(g_ui32SysClock);
//
// Initialize the graphics context.
//
GrContextInit(&g_sContext, &g_sKentec320x240x16_SSD2119);
//
// Draw the application frame.
//
FrameDraw(&g_sContext, "usb-otg-mouse");
//
// Configure USB for OTG operation.
//
USBOTGInit(g_ui32SysClock, ModeCallback);
sLPMFeature.ui32HIRD = 500;
sLPMFeature.ui32Features = USBLIB_FEATURE_LPM_EN |
USBLIB_FEATURE_LPM_RMT_WAKE;
USBHCDFeatureSet(0, USBLIB_FEATURE_LPM, &sLPMFeature);
//
// Initialize the host stack.
//
HostInit();
//
// Initialize the device stack.
//
DeviceInit();
//
// Initialize the USB controller for dual mode operation with a 2ms polling
// rate.
//
USBOTGModeInit(0, 2000, g_pui8HCDPool, HCD_MEMORY_SIZE);
//
// Set the new state so that the screen updates on the first
// pass.
//
g_ui32NewState = 1;
//
// Loop forever.
//
while(1)
{
//
// Tell the OTG library code how much time has passed in milliseconds
// since the last call.
//
USBOTGMain(GetTickms());
//
// Handle deferred state change.
//
if(g_ui32NewState)
{
g_ui32NewState =0;
//
// Update the status area of the screen.
//
ClearMainWindow();
//
// Update the status bar with the new mode.
//
switch(g_iCurrentMode)
{
case eUSBModeHost:
{
UpdateStatus("Host Mode", 0, true);
break;
}
case eUSBModeDevice:
{
UpdateStatus("Device Mode", 0, true);
break;
}
case eUSBModeNone:
{
UpdateStatus("Idle Mode\n", 0, true);
break;
}
default:
{
break;
}
}
}
if(g_iCurrentMode == eUSBModeDevice)
{
DeviceMain();
}
else if(g_iCurrentMode == eUSBModeHost)
{
HostMain();
}
}
}
