//*****************************************************************************
//
// Generic configuration is handled in this function.
//
// This function is called by the start up code to perform any configuration
// necessary before calling the update routine. It is responsible for setting
// the system clock to the expected rate and setting flash programming
// parameters prior to calling ConfigureUSBInterface() to set up the USB
// hardware.
//
// \return None.
//
//*****************************************************************************
void
UpdaterMain(void)
{
//
// Make sure NVIC points at the correct vector table.
//
HWREG(NVIC_VTABLE) = 0;
//
// Set the system clock to run at 50MHz from the PLL.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
//
// Configure the USB interface and power the bus.
//
ConfigureUSBInterface();
//
// Call the updater function. This will attempt to load a new image
// into flash from a USB memory stick.
//
UpdaterUSB();
}
//*****************************************************************************
//
// Generic configuration is handled in this function.
//
// This function is called by the start up code to perform any configuration
// necessary before calling the update routine. It is responsible for setting
// the system clock to the expected rate and setting flash programming
// parameters prior to calling ConfigureUSBInterface() to set up the USB
// hardware.
//
// \return None.
//
//*****************************************************************************
void
UpdaterMain(void)
{
//
// Make sure NVIC points at the correct vector table.
//
HWREG(NVIC_VTABLE) = 0;
//
// 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);
//
// Enable lazy stacking for interrupt handlers. This allows floating-point
// instructions to be used within interrupt handlers, but at the expense of
// extra stack usage.
//
ROM_FPULazyStackingEnable();
//
// Configure the USB interface and power the bus.
//
ConfigureUSBInterface();
//
// Call the updater function. This will attempt to load a new image
// into flash from a USB memory stick.
//
UpdaterUSB();
}
