//*****************************************************************************
//
// This is the main loop that runs the application.
//
//*****************************************************************************
int
main(void)
{
FRESULT FileResult;
tRectangle sRect;
//
// Initially wait for device connection.
//
g_eState = STATE_NO_DEVICE;
//
// Set the clocking to run directly from the crystal.
//
SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_8MHZ);
//
// Enable Clocking to the USB controller.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_USB0);
//
// Enable the peripherals used by this example.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
//
// Set the USB pins to be controlled by the USB controller.
//
GPIOPinTypeUSBDigital(GPIO_PORTH_BASE, GPIO_PIN_3 | GPIO_PIN_4);
//
// The LM3S3748 board uses a USB mux that must be switched to use the
// host connecter and not the device connecter.
//
GPIOPinTypeGPIOOutput(USB_MUX_GPIO_BASE, USB_MUX_GPIO_PIN);
GPIOPinWrite(USB_MUX_GPIO_BASE, USB_MUX_GPIO_PIN, USB_MUX_SEL_HOST);
//
// Turn on USB Phy clock.
//
SysCtlUSBPLLEnable();
//
// Set the system tick to fire 100 times per second.
//
SysTickPeriodSet(SysCtlClockGet()/100);
SysTickIntEnable();
SysTickEnable();
//
// Enable the uDMA controller and set up the control table base.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
uDMAEnable();
uDMAControlBaseSet(g_sDMAControlTable);
//
// Initialize the display driver.
//
Formike128x128x16Init();
//
// Turn on the backlight.
//
Formike128x128x16BacklightOn();
//
// Initialize the graphics context.
//
GrContextInit(&g_sContext, &g_sFormike128x128x16);
//
// Fill the top 15 rows of the screen with blue to create the banner.
//
sRect.sXMin = 0;
sRect.sYMin = 0;
sRect.sXMax = GrContextDpyWidthGet(&g_sContext) - 1;
sRect.sYMax = SPLASH_HEIGHT - 1;
GrContextForegroundSet(&g_sContext, ClrDarkBlue);
GrRectFill(&g_sContext, &sRect);
//
// Put a white box around the banner.
//
GrContextForegroundSet(&g_sContext, ClrWhite);
GrRectDraw(&g_sContext, &sRect);
//
// Put the application name in the middle of the banner.
//
GrContextFontSet(&g_sContext, &g_sFontFixed6x8);
GrStringDrawCentered(&g_sContext, "usb_host_msc", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 7, 0);
//
// Set the color to white and select the 20 point font.
//
GrContextForegroundSet(&g_sContext, FILE_COLOR);
GrStringDraw(&g_sContext, "No Device",
100, 0, TOP_HEIGHT, 1);
//
// Register the host class drivers.
//
USBHCDRegisterDrivers(0, g_ppHostClassDrivers, g_ulNumHostClassDrivers);
//
// Open an instance of the mass storage class driver.
//
g_ulMSCInstance = USBHMSCDriveOpen(0, MSCCallback);
//
// Initialize the power configuration. This sets the power enable signal
// to be active high and does not enable the power fault.
//
USBHCDPowerConfigInit(0, USB_HOST_PWREN_HIGH);
//
// Initialize the host controller.
//
USBHCDInit(0, g_pHCDPool, HCD_MEMORY_SIZE);
//
// Initialize the pushbuttons.
//
ButtonsInit();
//
// Set the auto repeat rates for the up and down buttons.
//
ButtonsSetAutoRepeat(UP_BUTTON, 50, 15);
ButtonsSetAutoRepeat(DOWN_BUTTON, 50, 15);
//
// Current directory is "/"
//
g_DirData.szPWD[0] = '/';
g_DirData.szPWD[1] = 0;
//
// Initialize the file system.
//
FileInit();
while(1)
{
USBHCDMain();
switch(g_eState)
{
case STATE_DEVICE_ENUM:
{
//
// Reset the root directory.
//
g_DirData.szPWD[0] = '/';
g_DirData.szPWD[1] = 0;
//
// Open the root directory.
//
FileResult = f_opendir(&g_DirData.DirState, g_DirData.szPWD);
//
// Wait for the root directory to open successfully. The MSC
// device can enumerate before being read to be accessed, so
// there may be some delay before it is ready.
//
if(FileResult == FR_OK)
{
//
// Reset the directory state.
//
g_DirData.ulIndex = 0;
g_DirData.ulSelectIndex = 0;
g_DirData.ulValidValues = 0;
g_eState = STATE_DEVICE_READY;
//
// Ignore buttons pressed before being ready.
//
g_ulButtons = 0;
//
// Update the screen if the root dir opened successfully.
//
DirUpdate();
UpdateWindow();
}
else if(FileResult != FR_NOT_READY)
{
// some kind of error
}
//
// Set the Device Present flag.
//
g_ulFlags = FLAGS_DEVICE_PRESENT;
break;
}
//
// This is the running state where buttons are checked and the
// screen is updated.
//
case STATE_DEVICE_READY:
{
//
// Down button pressed and released.
//
if(g_ulButtons & BUTTON_DOWN_CLICK)
{
//
// Update the screen and directory state.
//
MoveDown();
//
// Clear the button pressed event.
//
g_ulButtons &= ~BUTTON_DOWN_CLICK;
}
//
// Up button pressed and released.
//
if(g_ulButtons & BUTTON_UP_CLICK)
{
//
// Update the screen and directory state.
//
MoveUp();
//
// Clear the button pressed event.
//
g_ulButtons &= ~BUTTON_UP_CLICK;
}
//
// Select button pressed and released.
//
if(g_ulButtons & BUTTON_SELECT_CLICK)
{
//
// If this was a directory go into it.
//
SelectDir();
//
// Clear the button pressed event.
//
g_ulButtons &= ~BUTTON_SELECT_CLICK;
}
break;
}
//
// If there is no device then just wait for one.
//
case STATE_NO_DEVICE:
{
if(g_ulFlags == FLAGS_DEVICE_PRESENT)
{
//
// Clear the screen and indicate that there is no longer
// a device present.
//
ClearTextBox();
GrStringDraw(&g_sContext, "No Device",
100, 0, TOP_HEIGHT, 1);
//
// Clear the Device Present flag.
//
g_ulFlags &= ~FLAGS_DEVICE_PRESENT;
}
break;
}
//
// An unknown device was connected.
//
case STATE_UNKNOWN_DEVICE:
{
//
// If this is a new device then change the status.
//
if((g_ulFlags & FLAGS_DEVICE_PRESENT) == 0)
{
//
// Clear the screen and indicate that an unknown device is
// present.
//
ClearTextBox();
GrStringDraw(&g_sContext, "Unknown Device",
100, 0, TOP_HEIGHT, 1);
}
//
// Set the Device Present flag.
//
g_ulFlags = FLAGS_DEVICE_PRESENT;
break;
}
//
// Something has caused a power fault.
//
case STATE_POWER_FAULT:
{
break;
}
default:
{
break;
}
}
}
}
//*****************************************************************************
//
// This is the main loop that runs the application.
//
//*****************************************************************************
int
main(void)
{
tRectangle sRect;
//
// Set the clocking to run directly from the crystal.
//
SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_8MHZ);
//
// Enable the USB mux GPIO.
//
SysCtlPeripheralEnable(USB_MUX_GPIO_PERIPH);
//
// The LM3S3748 board uses a USB mux that must be switched to use the
// host connector and not the device connecter.
//
GPIOPinTypeGPIOOutput(USB_MUX_GPIO_BASE, USB_MUX_GPIO_PIN);
GPIOPinWrite(USB_MUX_GPIO_BASE, USB_MUX_GPIO_PIN, USB_MUX_SEL_DEVICE);
#ifdef DEBUG
//
// Configure the relevant pins such that UART0 owns them.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Open UART0 for debug output.
//
UARTStdioInit(0);
#endif
//
// Initialize the pushbuttons.
//
ButtonsInit();
ButtonsSetAutoRepeat((LEFT_BUTTON | RIGHT_BUTTON | UP_BUTTON |
DOWN_BUTTON), 0, 2);
//
// Set the system tick to fire 100 times per second.
//
SysTickPeriodSet(SysCtlClockGet() / SYSTICKS_PER_SECOND);
SysTickIntEnable();
SysTickEnable();
//
// Initialize the display driver.
//
Formike128x128x16Init();
//
// Turn on the backlight.
//
Formike128x128x16BacklightOn();
//
// Initialize the graphics context.
//
GrContextInit(&g_sContext, &g_sFormike128x128x16);
//
// Fill the top 15 rows of the screen with blue to create the banner.
//
sRect.sXMin = 0;
sRect.sYMin = 0;
sRect.sXMax = GrContextDpyWidthGet(&g_sContext) - 1;
sRect.sYMax = 14;
GrContextForegroundSet(&g_sContext, ClrDarkBlue);
GrRectFill(&g_sContext, &sRect);
//
// Put a white box around the banner.
//
GrContextForegroundSet(&g_sContext, ClrWhite);
GrRectDraw(&g_sContext, &sRect);
//
// Put the application name in the middle of the banner.
//
GrContextFontSet(&g_sContext, g_pFontFixed6x8);
GrStringDrawCentered(&g_sContext, "boot_demo_usb", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 7, 0);
//
// Initialize each of the device instances that will form our composite
// USB device.
//
g_sCompDevice.psDevices[0].pvInstance =
USBDHIDMouseCompositeInit(0, (tUSBDHIDMouseDevice *)&g_sMouseDevice);
g_sCompDevice.psDevices[1].pvInstance =
USBDDFUCompositeInit(0, (tUSBDDFUDevice *)&g_sDFUDevice);
//
// Pass the USB library our device information, initialize the USB
// controller and connect the device to the bus.
//
USBDCompositeInit(0, &g_sCompDevice, DESCRIPTOR_BUFFER_SIZE,
g_pcDescriptorBuffer);
//
// Drop into the main loop.
//
while(!g_bUpdateSignalled)
{
//
// Fill all but the top 15 rows of the screen with black to erase the
// previous status.
//
sRect.sXMin = 0;
sRect.sYMin = 15;
sRect.sXMax = GrContextDpyWidthGet(&g_sContext) - 1;
sRect.sYMax = GrContextDpyHeightGet(&g_sContext) - 1;
GrContextForegroundSet(&g_sContext, ClrBlack);
GrRectFill(&g_sContext, &sRect);
//
// Tell the user what we are doing.
//
GrContextForegroundSet(&g_sContext, ClrWhite);
GrStringDrawCentered(&g_sContext, "Waiting for host...", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 24, true);
//
// Wait for USB configuration to complete.
//
while(!g_bConnected)
{
}
//
// Update the status.
//
GrStringDrawCentered(&g_sContext, " Host connected... ", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 24, true);
//
// Now keep processing the mouse as long as the host is connected.
//
while(g_bConnected && !g_bUpdateSignalled)
{
//
// If it is time to check the button state then do so.
//
if(g_ulCommands & BUTTON_TICK_EVENT)
{
g_ulCommands &= ~BUTTON_TICK_EVENT;
ButtonHandler();
}
}
//
// If we drop out of the previous loop, the host has disconnected so
// go back and wait for a new connection.
//
}
//
// If we drop out of the main loop, the host has signalled that it wants us
// to switch into DFU mode in preparation for a firmware upgrade. First,
// let the user know what's going on.
//
GrStringDrawCentered(&g_sContext, "Entering DFU mode...", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 24, true);
//
// Call the USB DFU device class to tidy things up and transfer control to
// the boot loader for us. Note that this function never returns.
//
USBDDFUUpdateBegin();
}
