/*
* ======== USBKBD_putChar ========
*/
int USBKBD_putChar(int ch, unsigned int timeout)
{
/* Indicate failure */
int retValue = 0;
unsigned int key;
switch (state) {
case USBKBD_STATE_UNCONFIGURED:
USBKBD_waitForConnect(timeout);
break;
case USBKBD_STATE_SUSPENDED:
/* Acquire lock */
key = GateMutex_enter(gateKeyboard);
state = USBKBD_STATE_SENDING;
USBDHIDKeyboardRemoteWakeupRequest((void *)&keyboardDevice);
if (waitUntilSent(timeout)) {
retValue = sendChar(ch, timeout);
}
/* Release lock */
GateMutex_leave(gateKeyboard, key);
break;
case USBKBD_STATE_SENDING:
case USBKBD_STATE_IDLE:
/* Acquire lock */
key = GateMutex_enter(gateKeyboard);
retValue = sendChar(ch, timeout);
/* Release lock */
GateMutex_leave(gateKeyboard, key);
break;
default:
break;
}
return (retValue);
}
//*****************************************************************************
//
// This is the main loop that runs the application.
//
//*****************************************************************************
int
main(void)
{
unsigned long ulButton, ulPrevious, ulLastTickCount;
tBoolean bLastSuspend;
//
// Set the clocking to run from the PLL at 50MHz.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
//
// Enable USB pins
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
GPIOPinTypeUSBAnalog(GPIO_PORTD_BASE, GPIO_PIN_4 | GPIO_PIN_5);
//
// Enable the UART.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
UARTStdioInit(0);
UARTprintf("\033[2JKeyboard device application\n");
//
// Enable the GPIO that is used for the on-board push button.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
ROM_GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_4);
ROM_GPIOPadConfigSet(GPIO_PORTF_BASE, GPIO_PIN_4, GPIO_STRENGTH_2MA,
GPIO_PIN_TYPE_STD_WPU);
//
// Enable the GPIO that is used for the on-board LED.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1);
ROM_GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1, 0);
//
// Not configured initially.
//
g_bConnected = false;
g_bSuspended = false;
bLastSuspend = false;
//
// Set the USB stack mode to Device mode with VBUS monitoring.
//
USBStackModeSet(0, USB_MODE_DEVICE, 0);
//
// Pass our device information to the USB HID device class driver,
// initialize the USB
// controller and connect the device to the bus.
//
USBDHIDKeyboardInit(0, &g_sKeyboardDevice);
//
// Set the system tick to fire 100 times per second.
//
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//
// The main loop starts here. We begin by waiting for a host connection
// then drop into the main keyboard handling section. If the host
// disconnects, we return to the top and wait for a new connection.
//
ulPrevious = 1;
setup();
while(1)
{
//
// Tell the user what we are doing and provide some basic instructions.
//
UARTprintf("Waiting for host...\n");
//
// Wait for USB configuration to complete.
//
while(!g_bConnected)
{
}
//
// Update the status.
//
UARTprintf("Host connected...\n");
//
// Enter the idle state.
//
g_eKeyboardState = STATE_IDLE;
//
// Assume that the bus is not currently suspended if we have just been
// configured.
//
bLastSuspend = false;
//
// Keep transferring characters from the UART to the USB host for as
// long as we are connected to the host.
//
while(g_bConnected)
{
//
// Remember the current time.
//
ulLastTickCount = g_ulSysTickCount;
//
// Has the suspend state changed since last time we checked?
//
if(bLastSuspend != g_bSuspended)
{
//
// Yes - the state changed so update the display.
//
bLastSuspend = g_bSuspended;
UARTprintf(bLastSuspend ? "Bus suspended...\n" :
"Host connected...\n");
}
//
// See if the button was just pressed.
//
ulButton = num;
if(ulButton != ulPrevious)
{
//
// If the bus is suspended then resume it. Otherwise, type
// some "random" characters.
//
if(g_bSuspended)
{
//
// We are suspended so request a remote wakeup.
//
USBDHIDKeyboardRemoteWakeupRequest(
(void *)&g_sKeyboardDevice);
}
else
{
char s[2] = {0x30+num,0};
SendString(s);
}
}
ulPrevious = ulButton;
//
// Wait for at least 1 system tick to have gone by before we poll
// the buttons again.
//
while(g_ulSysTickCount == ulLastTickCount)
{
//
// Hang around doing nothing.
//
}
}
//
// Dropping out of the previous loop indicates that the host has
// disconnected so go back and wait for reconnection.
//
if(g_bConnected == false)
{
UARTprintf("Host disconnected...\n");
}
}
}
//*****************************************************************************
//
// This is the main loop that runs the application.
//
//*****************************************************************************
int
main(void)
{
uint_fast32_t ui32LastTickCount;
bool bLastSuspend;
uint32_t ui32SysClock;
//
// Run from the PLL at 120 MHz.
//
ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN | SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_480), 120000000);
//
// Configure the device pins for this board.
//
PinoutSet(false, true);
//
// Initialize the buttons driver
//
ButtonsInit();
//
// Enable UART0
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
//
// Initialize the UART for console I/O.
//
UARTStdioConfig(0, 115200, ui32SysClock);
//
// Not configured initially.
//
g_bConnected = false;
g_bSuspended = false;
bLastSuspend = false;
//
// Initialize the USB stack for device mode.
//
USBStackModeSet(0, eUSBModeDevice, 0);
//
// Pass our device information to the USB HID device class driver,
// initialize the USB controller and connect the device to the bus.
//
USBDHIDKeyboardInit(0, &g_sKeyboardDevice);
//
// Set the system tick to fire 100 times per second.
//
ROM_SysTickPeriodSet(ui32SysClock / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//
// Initial Message
//
UARTprintf("\033[2J\033[H\n");
UARTprintf("******************************\n");
UARTprintf("* usb-dev-keyboard *\n");
UARTprintf("******************************\n");
//
// The main loop starts here. We begin by waiting for a host connection
// then drop into the main keyboard handling section. If the host
// disconnects, we return to the top and wait for a new connection.
//
while(1) {
uint8_t ui8Buttons;
uint8_t ui8ButtonsChanged;
//
// Tell the user what we are doing and provide some basic instructions.
//
UARTprintf("\nWaiting For Host...\n");
//
// Wait here until USB device is connected to a host.
//
while(!g_bConnected) {
}
//
// Update the status.
//
UARTprintf("\nHost Connected...\n");
//
// Enter the idle state.
//
g_eKeyboardState = STATE_IDLE;
//
// Assume that the bus is not currently suspended if we have just been
// configured.
//
bLastSuspend = false;
//
// Keep transferring characters from the UART to the USB host for as
// long as we are connected to the host.
//
while(g_bConnected) {
//
// Remember the current time.
//
ui32LastTickCount = g_ui32SysTickCount;
//
// Has the suspend state changed since last time we checked?
//
if(bLastSuspend != g_bSuspended) {
//
// Yes - the state changed. Print state to terminal.
//
bLastSuspend = g_bSuspended;
if(bLastSuspend) {
UARTprintf("\nBus Suspended ... \n");
} else {
UARTprintf("\nHost Connected ... \n");
}
}
//
// See if the button was just pressed.
//
ui8Buttons = ButtonsPoll(&ui8ButtonsChanged, 0);
if(BUTTON_PRESSED(LEFT_BUTTON | RIGHT_BUTTON, ui8Buttons,
ui8ButtonsChanged)) {
//
// If the bus is suspended then resume it. Otherwise, type
// some "random" characters.
//
if(g_bSuspended) {
USBDHIDKeyboardRemoteWakeupRequest(
(void *)&g_sKeyboardDevice);
} else {
SendString("Make the Switch to TI Microcontrollers!");
}
}
//
// Wait for at least 1 system tick to have gone by before we poll
// the buttons again.
//
while(g_ui32SysTickCount == ui32LastTickCount) {
}
}
}
}
//*****************************************************************************
//
// This is the main loop that runs the application.
//
//*****************************************************************************
int
main(void)
{
uint_fast32_t ui32LastTickCount;
bool bLastSuspend;
tRectangle sRect;
tContext sContext;
int_fast32_t i32CenterX;
//
// 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();
//
// Set the clocking to run from the PLL at 50MHz.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
//
// Configure the required pins for USB operation.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
ROM_GPIOPinConfigure(GPIO_PG4_USB0EPEN);
ROM_GPIOPinTypeUSBDigital(GPIO_PORTG_BASE, GPIO_PIN_4);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOL);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTL_BASE, GPIO_PIN_6 | GPIO_PIN_7);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTB_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Erratum workaround for silicon revision A1. VBUS must have pull-down.
//
if(CLASS_IS_BLIZZARD && REVISION_IS_A1)
{
HWREG(GPIO_PORTB_BASE + GPIO_O_PDR) |= GPIO_PIN_1;
}
//
// Enable the GPIO that is used for the on-board LED.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTG_BASE, GPIO_PIN_2);
ROM_GPIOPinWrite(GPIO_PORTG_BASE, GPIO_PIN_2, 0);
//
// Initialize the buttons driver
//
ButtonsInit();
//
// Initialize the display driver.
//
CFAL96x64x16Init();
//
// Initialize the graphics context and find the middle X coordinate.
//
GrContextInit(&sContext, &g_sCFAL96x64x16);
i32CenterX = GrContextDpyWidthGet(&sContext) / 2;
//
// Fill the top part of the screen with blue to create the banner.
//
sRect.i16XMin = 0;
sRect.i16YMin = 0;
sRect.i16XMax = GrContextDpyWidthGet(&sContext) - 1;
sRect.i16YMax = 9;
GrContextForegroundSet(&sContext, ClrDarkBlue);
GrRectFill(&sContext, &sRect);
//
// Change foreground for white text.
//
GrContextForegroundSet(&sContext, ClrWhite);
//
// Put the application name in the middle of the banner.
//
GrContextFontSet(&sContext, g_psFontFixed6x8);
GrStringDrawCentered(&sContext, "usb-dev-keyboard", -1, i32CenterX, 4, 0);
//
// Not configured initially.
//
g_bConnected = false;
g_bSuspended = false;
bLastSuspend = false;
//
// Initialize the USB stack for device mode.
//
USBStackModeSet(0, eUSBModeDevice, 0);
//
// Pass our device information to the USB HID device class driver,
// initialize the USB
// controller and connect the device to the bus.
//
USBDHIDKeyboardInit(0, &g_sKeyboardDevice);
//
// Set the system tick to fire 100 times per second.
//
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//
// The main loop starts here. We begin by waiting for a host connection
// then drop into the main keyboard handling section. If the host
// disconnects, we return to the top and wait for a new connection.
//
while(1)
{
uint8_t ui8Buttons;
uint8_t ui8ButtonsChanged;
//
// Tell the user what we are doing and provide some basic instructions.
//
GrStringDrawCentered(&sContext, " Waiting ",
-1, i32CenterX, 22, 1);
GrStringDrawCentered(&sContext, " for host ... ", -1,
i32CenterX, 32, 1);
//
// Wait here until USB device is connected to a host.
//
while(!g_bConnected)
{
}
//
// Update the status.
//
GrStringDrawCentered(&sContext, " Host ",
-1, i32CenterX, 22, 1);
GrStringDrawCentered(&sContext, " connected ... ",
-1, i32CenterX, 32, 1);
//
// Enter the idle state.
//
g_eKeyboardState = STATE_IDLE;
//
// Assume that the bus is not currently suspended if we have just been
// configured.
//
bLastSuspend = false;
//
// Keep transferring characters from the UART to the USB host for as
// long as we are connected to the host.
//
while(g_bConnected)
{
//
// Remember the current time.
//
ui32LastTickCount = g_ui32SysTickCount;
//
// Has the suspend state changed since last time we checked?
//
if(bLastSuspend != g_bSuspended)
{
//
// Yes - the state changed so update the display.
//
bLastSuspend = g_bSuspended;
if(bLastSuspend)
{
GrStringDrawCentered(&sContext, " Bus ", -1,
i32CenterX, 22, 1);
GrStringDrawCentered(&sContext, " suspended ... ", -1,
i32CenterX, 32, 1);
}
else
{
GrStringDrawCentered(&sContext, " Host ", -1,
i32CenterX, 22, 1);
GrStringDrawCentered(&sContext, " connected ... ",
-1, i32CenterX, 32, 1);
}
}
//
// See if the button was just pressed.
//
ui8Buttons = ButtonsPoll(&ui8ButtonsChanged, 0);
if(BUTTON_PRESSED(SELECT_BUTTON, ui8Buttons, ui8ButtonsChanged))
{
//
// If the bus is suspended then resume it. Otherwise, type
// some "random" characters.
//
if(g_bSuspended)
{
USBDHIDKeyboardRemoteWakeupRequest(
(void *)&g_sKeyboardDevice);
}
else
{
SendString("Make the Switch to TI Microcontrollers!");
}
}
//
// Wait for at least 1 system tick to have gone by before we poll
// the buttons again.
//
while(g_ui32SysTickCount == ui32LastTickCount)
{
}
}
}
}
//*****************************************************************************
//
// This is the main loop that runs the application.
//
//*****************************************************************************
int
main(void)
{
uint_fast32_t ui32LastTickCount;
bool bLastSuspend;
//
// 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();
//
// Set the clocking to run from the PLL at 50MHz.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
//
// Enable the GPIO port that is used for the on-board LED.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
//
// Enable the GPIO pin for the Blue LED (PF2).
//
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);
//
// Enable the UART.
//
ConfigureUART();
UARTprintf("Keyboard device application\n");
// Configure USB0DM & USB0DP (PD4 & PD5)
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
SysCtlGPIOAHBEnable(SYSCTL_PERIPH_GPIOD);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTD_AHB_BASE, GPIO_PIN_4 | GPIO_PIN_5);
//Configure USB0ID & USB0VBUS (PB0 & PB1)
// ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
// ROM_GPIOPinTypeUSBAnalog(GPIO_PORTB_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Erratum workaround for silicon revision A1. VBUS must have pull-down.
//
if(CLASS_IS_TM4C123 && REVISION_IS_A1)
{
HWREG(GPIO_PORTB_BASE + GPIO_O_PDR) |= GPIO_PIN_1;
}
//
// Initialize the buttons driver
//
ButtonsInit();
//
// Not configured initially.
//
g_bConnected = false;
g_bSuspended = false;
bLastSuspend = false;
//
// Initialize the USB stack for device mode.
//
//USBStackModeSet(0, eUSBModeDevice, 0);
USBStackModeSet(0, eUSBModeForceDevice, 0);
//
// Pass our device information to the USB HID device class driver,
// initialize the USB
// controller and connect the device to the bus.
//
USBDHIDKeyboardInit(0, &g_sKeyboardDevice);
//
// Set the system tick to fire 100 times per second.
//
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//
// The main loop starts here. We begin by waiting for a host connection
// then drop into the main keyboard handling section. If the host
// disconnects, we return to the top and wait for a new connection.
//
while(1)
{
uint8_t ui8Buttons;
uint8_t ui8ButtonsChanged;
//
// Tell the user what we are doing and provide some basic instructions.
//
UARTprintf("Waiting for host...\n");
//
// Wait here until USB device is connected to a host.
//
while(!g_bConnected)
{
}
//
// Update the status.
//
UARTprintf("Host connected...\n");
//
// Enter the idle state.
//
g_eKeyboardState = STATE_IDLE;
//
// Assume that the bus is not currently suspended if we have just been
// configured.
//
bLastSuspend = false;
//
// Keep transferring characters from the UART to the USB host for as
// long as we are connected to the host.
//
while(g_bConnected)
{
//
// Remember the current time.
//
ui32LastTickCount = g_ui32SysTickCount;
//
// Has the suspend state changed since last time we checked?
//
if(bLastSuspend != g_bSuspended)
{
//
// Yes - the state changed so update the display.
//
bLastSuspend = g_bSuspended;
UARTprintf(bLastSuspend ? "Bus suspended...\n" :"Host connected...\n");
}
//
// See if the button was just pressed.
//
ui8Buttons = ButtonsPoll(&ui8ButtonsChanged, 0);
if(BUTTON_PRESSED(LEFT_BUTTON, ui8Buttons, ui8ButtonsChanged))
{
//
// If the bus is suspended then resume it. Otherwise, type
// some "random" characters.
//
if(g_bSuspended)
{
USBDHIDKeyboardRemoteWakeupRequest(
(void *)&g_sKeyboardDevice);
}
else
{
SendString("Make the Switch to TI Microcontrollers!");
}
}
//
// Wait for at least 1 system tick to have gone by before we poll
// the buttons again.
//
while(g_ui32SysTickCount == ui32LastTickCount)
{
}
}
//
// Dropping out of the previous loop indicates that the host has
// disconnected so go back and wait for reconnection.
//
if(g_bConnected == false)
{
UARTprintf("Host disconnected...\n");
}
}
}