/*
* ======== USBCDCD_init ========
*/
void USBCDCD_init(void)
{
Hwi_Handle hwi;
Error_Block eb;
Error_init(&eb);
/* Install interrupt handler */
hwi = Hwi_create(INT_USB0, USBCDCD_LoggerIdle_hwiHandler, NULL, &eb);
if (hwi == NULL) {
System_abort("Can't create USB Hwi");
}
/* State specific variables */
state = USBCDCD_STATE_UNCONFIGURED;
/* Set the USB stack mode to Device mode with VBUS monitoring */
USBStackModeSet(0, eUSBModeForceDevice, 0);
/* Initialize the transmit buffer */
USBBufferInit(&txBuffer);
/*
* Pass our device information to the USB HID device class driver,
* initialize the USB controller and connect the device to the bus.
*/
if (!USBDCDCInit(0, &serialDevice)) {
System_abort("Error initializing the serial device");
}
}
//*****************************************************************************
//
// Initializes the USB serial device.
//
//*****************************************************************************
void
USBSerialInit(void)
{
//
// Initialize the transmit and receive buffers.
//
USBBufferInit((tUSBBuffer *)&g_sTxBuffer);
USBBufferInit((tUSBBuffer *)&g_sRxBuffer);
//
// Initialize the USB library CDC device function.
//
USBDCDCInit(0, (tUSBDCDCDevice *)&g_sCDCDevice);
}
//*****************************************************************************
//
// Initializes the USB interface.
//
//*****************************************************************************
void
USBIFInit(void)
{
//
// Initialize the transmit and receive buffers.
//
USBBufferInit(&g_sTxBuffer);
USBBufferInit(&g_sRxBuffer);
//
// Pass the device information to the USB library and place the device
// on the bus.
//
USBDCDCInit(0, &g_sCDCDevice);
}
// Initialise the USB peripheral
void USBInit(void)
{
g_ui32Flags = 0;
g_bUSBConfigured = false;
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTD_BASE, GPIO_PIN_5 | GPIO_PIN_4);
// Initialize the transmit and receive buffers.
USBBufferInit(&TxBuffer);
USBBufferInit(&RxBuffer);
// Set the USB stack mode to Device mode with VBUS monitoring.
USBStackModeSet(0, eUSBModeForceDevice, 0);
// Pass our device information to the USB library and place the device on the bus.
USBDCDCInit(0, &g_sCDCDevice);
}
void USB_Task(void)
{
//
// Configure the required pins for USB operation.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTD_BASE, GPIO_PIN_5 | GPIO_PIN_4);
//
// Not configured initially.
//
g_bUSBConfigured = false;
//
// Initialize the transmit and receive buffers.
//
USBBufferInit(&g_sTxBuffer);
USBBufferInit(&g_sRxBuffer);
//
// Set the USB stack mode to Device mode with VBUS monitoring.
//
USBStackModeSet(0, eUSBModeForceDevice, 0);
//
// Pass our device information to the USB library and place the device
// on the bus.
//
USBDCDCInit(0, &g_sCDCDevice);
Virtual_Comm_Init();
(void)usb_terminal_add_cmd((command_t*)&usb_ver_cmd);
(void)usb_terminal_add_cmd((command_t*)&usb_top_cmd);
(void)usb_terminal_add_cmd((command_t*)&usb_rst_cmd);
(void)usb_terminal_add_cmd((command_t*)&echo_cmd);
while(1)
{
/* Call the application task */
usb_terminal_process();
}
}
/*
* ======== USBCDCD_init ========
*/
uint8_t USBCDCD_init(void)
{
/* State specific variables */
state = USBCDCD_STATE_UNCONFIGURED;
/* Set the USB stack mode to Device mode with VBUS monitoring */
USBStackModeSet(0, USB_MODE_DEVICE, 0);
USBBufferInit(&txBuffer);
USBBufferInit(&rxBuffer);
/*
* Pass our device information to the USB HID device class driver,
* initialize the USB controller and connect the device to the bus.
*/
if (!USBDCDCInit(0, &serialDevice)) {
return -1;
}
return 0;
}
//*****************************************************************************
//
// This is the main application entry function.
//
//*****************************************************************************
int
main(void)
{
uint32_t ui32TxCount;
uint32_t ui32RxCount;
tRectangle sRect;
char pcBuffer[16];
uint32_t ui32Fullness;
//
// 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;
}
//
// Not configured initially.
//
g_bUSBConfigured = false;
//
// Initialize the display driver.
//
CFAL96x64x16Init();
//
// Initialize the graphics context.
//
GrContextInit(&g_sContext, &g_sCFAL96x64x16);
//
// Fill the top 15 rows of the screen with blue to create the banner.
//
sRect.i16XMin = 0;
sRect.i16YMin = 0;
sRect.i16XMax = GrContextDpyWidthGet(&g_sContext) - 1;
sRect.i16YMax = 9;
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_psFontFixed6x8);
GrStringDrawCentered(&g_sContext, "usb-dev-serial", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 4, 0);
//
// Show the various static text elements on the color STN display.
//
GrStringDraw(&g_sContext, "Tx #",-1, 0, 12, false);
GrStringDraw(&g_sContext, "Tx buf", -1, 0, 22, false);
GrStringDraw(&g_sContext, "Rx #", -1, 0, 32, false);
GrStringDraw(&g_sContext, "Rx buf", -1, 0, 42, false);
DrawBufferMeter(&g_sContext, 40, 22);
DrawBufferMeter(&g_sContext, 40, 42);
//
// Enable the UART that we will be redirecting.
//
ROM_SysCtlPeripheralEnable(USB_UART_PERIPH);
//
// Enable and configure the UART RX and TX pins
//
ROM_SysCtlPeripheralEnable(TX_GPIO_PERIPH);
ROM_SysCtlPeripheralEnable(RX_GPIO_PERIPH);
ROM_GPIOPinTypeUART(TX_GPIO_BASE, TX_GPIO_PIN);
ROM_GPIOPinTypeUART(RX_GPIO_BASE, RX_GPIO_PIN);
//
// TODO: Add code to configure handshake GPIOs if required.
//
//
// Set the default UART configuration.
//
ROM_UARTConfigSetExpClk(USB_UART_BASE, ROM_SysCtlClockGet(),
DEFAULT_BIT_RATE, DEFAULT_UART_CONFIG);
ROM_UARTFIFOLevelSet(USB_UART_BASE, UART_FIFO_TX4_8, UART_FIFO_RX4_8);
//
// Configure and enable UART interrupts.
//
ROM_UARTIntClear(USB_UART_BASE, ROM_UARTIntStatus(USB_UART_BASE, false));
ROM_UARTIntEnable(USB_UART_BASE, (UART_INT_OE | UART_INT_BE | UART_INT_PE |
UART_INT_FE | UART_INT_RT | UART_INT_TX | UART_INT_RX));
//
// Enable the system tick.
//
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//
// Tell the user what we are up to.
//
DisplayStatus(&g_sContext, " Configuring... ");
//
// Initialize the transmit and receive buffers.
//
USBBufferInit(&g_sTxBuffer);
USBBufferInit(&g_sRxBuffer);
//
// Set the USB stack mode to Device mode with VBUS monitoring.
//
USBStackModeSet(0, eUSBModeDevice, 0);
//
// Pass our device information to the USB library and place the device
// on the bus.
//
USBDCDCInit(0, &g_sCDCDevice);
//
// Wait for initial configuration to complete.
//
DisplayStatus(&g_sContext, "Waiting for host");
//
// Clear our local byte counters.
//
ui32RxCount = 0;
ui32TxCount = 0;
//
// Enable interrupts now that the application is ready to start.
//
ROM_IntEnable(USB_UART_INT);
//
// Main application loop.
//
while(1)
{
//
// Have we been asked to update the status display?
//
if(g_ui32Flags & COMMAND_STATUS_UPDATE)
{
//
// Clear the command flag
//
ROM_IntMasterDisable();
g_ui32Flags &= ~COMMAND_STATUS_UPDATE;
ROM_IntMasterEnable();
DisplayStatus(&g_sContext, g_pcStatus);
}
//
// Has there been any transmit traffic since we last checked?
//
if(ui32TxCount != g_ui32UARTTxCount)
{
//
// Take a snapshot of the latest transmit count.
//
ui32TxCount = g_ui32UARTTxCount;
//
// Update the display of bytes transmitted by the UART.
//
usnprintf(pcBuffer, 16, "%d ", ui32TxCount);
GrStringDraw(&g_sContext, pcBuffer, -1, 40, 12, true);
//
// Update the RX buffer fullness. Remember that the buffers are
// named relative to the USB whereas the status display is from
// the UART's perspective. The USB's receive buffer is the UART's
// transmit buffer.
//
ui32Fullness = ((USBBufferDataAvailable(&g_sRxBuffer) * 100) /
UART_BUFFER_SIZE);
UpdateBufferMeter(&g_sContext, ui32Fullness, 40, 22);
}
//
// Has there been any receive traffic since we last checked?
//
if(ui32RxCount != g_ui32UARTRxCount)
{
//
// Take a snapshot of the latest receive count.
//
ui32RxCount = g_ui32UARTRxCount;
//
// Update the display of bytes received by the UART.
//
usnprintf(pcBuffer, 16, "%d ", ui32RxCount);
GrStringDraw(&g_sContext, pcBuffer, -1, 40, 32, true);
//
// Update the TX buffer fullness. Remember that the buffers are
// named relative to the USB whereas the status display is from
// the UART's perspective. The USB's transmit buffer is the UART's
// receive buffer.
//
ui32Fullness = ((USBBufferDataAvailable(&g_sTxBuffer) * 100) /
UART_BUFFER_SIZE);
UpdateBufferMeter(&g_sContext, ui32Fullness, 40, 42);
}
}
}
//*****************************************************************************
//
// This is the main application entry function.
//
//*****************************************************************************
int
main(void)
{
uint32_t ui32TxCount, ui32RxCount, ui32Fullness, ui32SysClock, ui32PLLRate;
tRectangle sRect;
char pcBuffer[16];
#ifdef USE_ULPI
uint32_t ui32Setting;
#endif
//
// Set the system clock to run at 120MHz from the PLL.
//
ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN | SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_480), 120000000);
//
// Configure the device pins.
//
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
//
// Enable the system tick.
//
ROM_SysTickPeriodSet(ui32SysClock / TICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//
// Not configured initially.
//
g_ui32Flags = 0;
//
// Initialize the display driver.
//
Kentec320x240x16_SSD2119Init(ui32SysClock);
//
// Initialize the graphics context.
//
GrContextInit(&g_sContext, &g_sKentec320x240x16_SSD2119);
//
// Draw the application frame.
//
FrameDraw(&g_sContext, "usb-dev-serial");
//
// Fill the top 15 rows of the screen with blue to create the banner.
//
sRect.i16XMin = 0;
sRect.i16YMin = 0;
sRect.i16XMax = GrContextDpyWidthGet(&g_sContext) - 1;
sRect.i16YMax = 23;
GrContextForegroundSet(&g_sContext, ClrDarkBlue);
GrRectFill(&g_sContext, &sRect);
//
// Put a white box around the banner.
//
GrContextForegroundSet(&g_sContext, ClrWhite);
GrRectDraw(&g_sContext, &sRect);
//
// Show the various static text elements on the color STN display.
//
GrContextFontSet(&g_sContext, TEXT_FONT);
GrStringDraw(&g_sContext, "Tx bytes:", -1, 8, 80, false);
GrStringDraw(&g_sContext, "Tx buffer:", -1, 8, 105, false);
GrStringDraw(&g_sContext, "Rx bytes:", -1, 8, 160, false);
GrStringDraw(&g_sContext, "Rx buffer:", -1, 8, 185, false);
DrawBufferMeter(&g_sContext, 150, 105);
DrawBufferMeter(&g_sContext, 150, 185);
//
// Enable the UART that we will be redirecting.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
//
// Change the UART clock to the 16 MHz PIOSC.
//
UARTClockSourceSet(UART0_BASE, UART_CLOCK_PIOSC);
//
// Set the default UART configuration.
//
ROM_UARTConfigSetExpClk(UART0_BASE, UART_CLOCK,
DEFAULT_BIT_RATE, DEFAULT_UART_CONFIG);
ROM_UARTFIFOLevelSet(UART0_BASE, UART_FIFO_TX4_8, UART_FIFO_RX4_8);
//
// Configure and enable UART interrupts.
//
ROM_UARTIntClear(UART0_BASE, ROM_UARTIntStatus(UART0_BASE, false));
ROM_UARTIntEnable(UART0_BASE, (UART_INT_OE | UART_INT_BE | UART_INT_PE |
UART_INT_FE | UART_INT_RT | UART_INT_TX | UART_INT_RX));
//
// Tell the user what we are up to.
//
DisplayStatus(&g_sContext, " Configuring USB... ");
//
// Initialize the transmit and receive buffers.
//
USBBufferInit(&g_sTxBuffer);
USBBufferInit(&g_sRxBuffer);
//
// Set the USB stack mode to Device mode with VBUS monitoring.
//
USBStackModeSet(0, eUSBModeDevice, 0);
//
// Tell the USB library the CPU clock and the PLL frequency. This is a
// new requirement for TM4C129 devices.
//
USBDCDFeatureSet(0, USBLIB_FEATURE_CPUCLK, &ui32SysClock);
USBDCDFeatureSet(0, USBLIB_FEATURE_USBPLL, &ui32PLLRate);
//
// Pass our device information to the USB library and place the device
// on the bus.
//
USBDCDCInit(0, (tUSBDCDCDevice *)&g_sCDCDevice);
//
// Wait for initial configuration to complete.
//
DisplayStatus(&g_sContext, " Waiting for host... ");
//
// Clear our local byte counters.
//
ui32RxCount = 0;
ui32TxCount = 0;
g_ui32UARTTxCount = 0;
g_ui32UARTRxCount = 0;
#ifdef DEBUG
g_ui32UARTRxErrors = 0;
#endif
//
// Enable interrupts now that the application is ready to start.
//
ROM_IntEnable(INT_UART0);
//
// Main application loop.
//
while(1)
{
//
// Have we been asked to update the status display?
//
if(HWREGBITW(&g_ui32Flags, FLAG_STATUS_UPDATE))
{
//
// Clear the command flag
//
HWREGBITW(&g_ui32Flags, FLAG_STATUS_UPDATE) = 0;
DisplayStatus(&g_sContext, g_pcStatus);
}
//
// Has there been any transmit traffic since we last checked?
//
if(ui32TxCount != g_ui32UARTTxCount)
{
//
// Take a snapshot of the latest transmit count.
//
ui32TxCount = g_ui32UARTTxCount;
//
// Update the display of bytes transmitted by the UART.
//
usnprintf(pcBuffer, 16, "%d ", ui32TxCount);
GrStringDraw(&g_sContext, pcBuffer, -1, 150, 80, true);
//
// Update the RX buffer fullness. Remember that the buffers are
// named relative to the USB whereas the status display is from
// the UART's perspective. The USB's receive buffer is the UART's
// transmit buffer.
//
ui32Fullness = ((USBBufferDataAvailable(&g_sRxBuffer) * 100) /
UART_BUFFER_SIZE);
UpdateBufferMeter(&g_sContext, ui32Fullness, 150, 105);
}
//
// Has there been any receive traffic since we last checked?
//
if(ui32RxCount != g_ui32UARTRxCount)
{
//
// Take a snapshot of the latest receive count.
//
ui32RxCount = g_ui32UARTRxCount;
//
// Update the display of bytes received by the UART.
//
usnprintf(pcBuffer, 16, "%d ", ui32RxCount);
GrStringDraw(&g_sContext, pcBuffer, -1, 150, 160, true);
//
// Update the TX buffer fullness. Remember that the buffers are
// named relative to the USB whereas the status display is from
// the UART's perspective. The USB's transmit buffer is the UART's
// receive buffer.
//
ui32Fullness = ((USBBufferDataAvailable(&g_sTxBuffer) * 100) /
UART_BUFFER_SIZE);
UpdateBufferMeter(&g_sContext, ui32Fullness, 150, 185);
}
}
}
//*****************************************************************************
//
// This is the main application entry function.
//
//*****************************************************************************
int
main(void)
{
uint32_t ui32TxCount;
uint32_t ui32RxCount;
//uint32_t ui32Loop;
//
// 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
//
#if 1
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_GPIOD);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTD_BASE, GPIO_PIN_5 | GPIO_PIN_4);
//ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / 100);
/* This code taken from: http://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/t/311237.aspx
*/
#else
#include "hw_nvic.h"
FlashErase(0x00000000);
ROM_IntMasterDisable();
ROM_SysTickIntDisable();
ROM_SysTickDisable();
uint32_t ui32SysClock;
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
ui32SysClock = ROM_SysCtlClockGet();
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTD_BASE, GPIO_PIN_4 | GPIO_PIN_5);
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / 100);
HWREG(NVIC_DIS0) = 0xffffffff;
HWREG(NVIC_DIS1) = 0xffffffff;
HWREG(NVIC_DIS2) = 0xffffffff;
HWREG(NVIC_DIS3) = 0xffffffff;
HWREG(NVIC_DIS4) = 0xffffffff;
int ui32Addr;
for(ui32Addr = NVIC_PRI0; ui32Addr <= NVIC_PRI34; ui32Addr+=4)
{
HWREG(ui32Addr) = 0;
}
HWREG(NVIC_SYS_PRI1) = 0;
HWREG(NVIC_SYS_PRI2) = 0;
HWREG(NVIC_SYS_PRI3) = 0;
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_USB0);
ROM_SysCtlPeripheralReset(SYSCTL_PERIPH_USB0);
ROM_SysCtlUSBPLLEnable();
ROM_SysCtlDelay(ui32SysClock*2 / 3);
ROM_IntMasterEnable();
ROM_UpdateUSB(0);
while(1)
{
}
#endif
#define BOOTLOADER_TEST 0
#if BOOTLOADER_TEST
#include "hw_nvic.h"
//ROM_UpdateUART();
// May need to do the following here:
// 0. See if this will cause bootloader to start
//ROM_FlashErase(0);
//ROM_UpdateUSB(0);
#define SYSTICKS_PER_SECOND 100
uint32_t ui32SysClock = ROM_SysCtlClockGet();
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//USBDCDTerm(0);
// Disable all interrupts
ROM_IntMasterDisable();
ROM_SysTickIntDisable();
ROM_SysTickDisable();
HWREG(NVIC_DIS0) = 0xffffffff;
HWREG(NVIC_DIS1) = 0xffffffff;
HWREG(NVIC_DIS2) = 0xffffffff;
HWREG(NVIC_DIS3) = 0xffffffff;
HWREG(NVIC_DIS4) = 0xffffffff;
int ui32Addr;
for(ui32Addr = NVIC_PRI0; ui32Addr <= NVIC_PRI34; ui32Addr+=4)
{
HWREG(ui32Addr) = 0;
}
HWREG(NVIC_SYS_PRI1) = 0;
HWREG(NVIC_SYS_PRI2) = 0;
HWREG(NVIC_SYS_PRI3) = 0;
// 1. Enable USB PLL
//ROM_SysCtlUSBPLLEnable();
// 2. Enable USB controller
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_USB0);
ROM_SysCtlPeripheralReset(SYSCTL_PERIPH_USB0);
//USBClockEnable(USB0_BASE, 8, USB_CLOCK_INTERNAL);
//HWREG(USB0_BASE + USB_O_CC) = (8 - 1) | USB_CLOCK_INTERNAL;
ROM_SysCtlUSBPLLEnable();
// 3. Enable USB D+ D- pins
// 4. Activate USB DFU
ROM_SysCtlDelay(ui32SysClock * 2 / 3);
ROM_IntMasterEnable(); // Re-enable interrupts at NVIC level
ROM_UpdateUSB(0);
// 5. Should never get here since update is in progress
#endif // BOOTLOADER_TEST
//
// Enable the GPIO port that is used for the on-board LED.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB); // gjs Our board uses GPIOB for LEDs
// gjs original ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
//
// Enable the GPIO pins for the LED (PF2 & PF3).
//
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTB_BASE, GPIO_PIN_0|GPIO_PIN_1);
// gjs original ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_3|GPIO_PIN_2);
//
// Not configured initially.
//
g_bUSBConfigured = false;
//
// Enable the UART that we will be redirecting.
//
ROM_SysCtlPeripheralEnable(USB_UART_PERIPH);
//
// Enable and configure the UART RX and TX pins
//
ROM_SysCtlPeripheralEnable(TX_GPIO_PERIPH);
ROM_SysCtlPeripheralEnable(RX_GPIO_PERIPH);
ROM_GPIOPinTypeUART(TX_GPIO_BASE, TX_GPIO_PIN);
ROM_GPIOPinTypeUART(RX_GPIO_BASE, RX_GPIO_PIN);
//
// TODO: Add code to configure handshake GPIOs if required.
//
//
// Set the default UART configuration.
//
ROM_UARTConfigSetExpClk(USB_UART_BASE, ROM_SysCtlClockGet(),
DEFAULT_BIT_RATE, DEFAULT_UART_CONFIG);
ROM_UARTFIFOLevelSet(USB_UART_BASE, UART_FIFO_TX4_8, UART_FIFO_RX4_8);
//
// Configure and enable UART interrupts.
//
ROM_UARTIntClear(USB_UART_BASE, ROM_UARTIntStatus(USB_UART_BASE, false));
ROM_UARTIntEnable(USB_UART_BASE, (UART_INT_OE | UART_INT_BE | UART_INT_PE |
UART_INT_FE | UART_INT_RT | UART_INT_TX | UART_INT_RX));
//
// Enable the system tick.
//
#if 0
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
#endif
//
// Initialize the transmit and receive buffers.
//
USBBufferInit(&g_sTxBuffer);
USBBufferInit(&g_sRxBuffer);
//
// Set the USB stack mode to Device mode with VBUS monitoring.
//
USBStackModeSet(0, eUSBModeDevice, 0);
//
// Pass our device information to the USB library and place the device
// on the bus.
//
USBDCDCInit(0, &g_sCDCDevice);
//
// Clear our local byte counters.
//
ui32RxCount = 0;
ui32TxCount = 0;
//
// Enable interrupts now that the application is ready to start.
//
ROM_IntEnable(USB_UART_INT);
// Enable FreeRTOS
mainA(); // FreeRTOS. Will not return
#if 0
//
// Main application loop.
//
while(1)
{
//
// Have we been asked to update the status display?
//
if(g_ui32Flags & COMMAND_STATUS_UPDATE)
{
//
// Clear the command flag
//
ROM_IntMasterDisable();
g_ui32Flags &= ~COMMAND_STATUS_UPDATE;
ROM_IntMasterEnable();
}
//
// Has there been any transmit traffic since we last checked?
//
if(ui32TxCount != g_ui32UARTTxCount)
{
//
// Turn on the Green LED.
//
// gjs ROM_UARTCharPutNonBlocking(USB_UART_BASE, 'b');
#if 1
if (ui32TxCount & 1) {
GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_0, GPIO_PIN_0);
} else {
GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_0, 0);
}
#else
if (1 || g_ui32UARTTxCount & 0x01) {
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, GPIO_PIN_3);
} else {
//GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, 0);
}
//
// Delay for a bit.
//
for(uint32_t ui32Loop = 0; ui32Loop < 150000; ui32Loop++)
{
}
//
// Turn off the Green LED.
//
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, 0);
#endif
//
// Take a snapshot of the latest transmit count.
//
ui32TxCount = g_ui32UARTTxCount;
}
//
// Has there been any receive traffic since we last checked?
//
if(ui32RxCount != g_ui32UARTRxCount)
{
//
// Turn on the Blue LED.
//
#if 1
if (ui32RxCount & 1) {
GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_1, GPIO_PIN_1);
} else {
GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_1, 0);
}
#else
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, GPIO_PIN_2);
//
// Delay for a bit.
//
for(uint32_t ui32Loop = 0; ui32Loop < 150000; ui32Loop++)
{
}
//
// Turn off the Blue LED.
//
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, 0);
#endif
//
// Take a snapshot of the latest receive count.
//
ui32RxCount = g_ui32UARTRxCount;
}
}
#endif
}
//*****************************************************************************
//
// This is the main application entry function.
//
//*****************************************************************************
int
main(void)
{
//
// 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 UART.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
//
// Enable and configure the UART RX and TX pins
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Set the default UART configuration.
//
ROM_UARTConfigSetExpClk(UART0_BASE, ROM_SysCtlClockGet(), 115200,
UART_CONFIG_WLEN_8 | UART_CONFIG_PAR_NONE |
UART_CONFIG_STOP_ONE);
ROM_UARTFIFOLevelSet(UART0_BASE, UART_FIFO_TX4_8, UART_FIFO_RX4_8);
//
// Configure and enable UART interrupts.
//
ROM_UARTIntClear(UART0_BASE, ROM_UARTIntStatus(UART0_BASE, false));
ROM_UARTIntEnable(UART0_BASE, (UART_INT_OE | UART_INT_BE | UART_INT_PE |
UART_INT_FE | UART_INT_RT | UART_INT_RX));
//
// Enable and configure the user LED pin.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTD_BASE, GPIO_PIN_0);
//
// Turn off the user LED.
//
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_0, 0);
//
// Initialize the transmit and receive buffers.
//
USBBufferInit(&g_sTxBuffer);
USBBufferInit(&g_sRxBuffer);
//
// Set the USB stack mode to Device mode with VBUS monitoring.
//
USBStackModeSet(0, USB_MODE_DEVICE, 0);
//
// Pass the device information to the USB library and place the device
// on the bus.
//
USBDCDCInit(0, &g_sCDCDevice);
//
// Enable interrupts now that the application is ready to start.
//
ROM_IntEnable(INT_UART0);
//
// Main application loop.
//
while(1)
{
}
}
//*****************************************************************************
//
// This is the main application entry function.
//
//*****************************************************************************
int
main(void)
{
unsigned int ulTxCount;
unsigned int ulRxCount;
tRectangle sRect;
char pcBuffer[16];
unsigned int ulFullness;
unsigned int intFlags = 0;
unsigned char Intstatus;
unsigned int i;
unsigned char *src, *dest;
MMUConfigAndEnable();
//
// Not configured initially.
//
g_bUSBConfigured = false;
//
//configures arm interrupt controller to generate raster interrupt
//
USBInterruptEnable();
//
//LCD Back light setup
//
LCDBackLightEnable();
//
//UPD Pin setup
//
UPDNPinControl();
//
//Delay timer setup
//
DelayTimerSetup();
//
//Configures raster to display image
//
SetUpLCD();
RasterDMAFBConfig(SOC_LCDC_0_REGS,
(unsigned int)(g_pucBuffer+PALETTE_OFFSET),
(unsigned int)(g_pucBuffer+PALETTE_OFFSET) + sizeof(g_pucBuffer) - 2 -
PALETTE_OFFSET, FRAME_BUFFER_0);
RasterDMAFBConfig(SOC_LCDC_0_REGS,
(unsigned int)(g_pucBuffer+PALETTE_OFFSET),
(unsigned int)(g_pucBuffer+PALETTE_OFFSET) + sizeof(g_pucBuffer) - 2 -
PALETTE_OFFSET, FRAME_BUFFER_1);
src = (unsigned char *) palette_32b;
dest = (unsigned char *) (g_pucBuffer+PALETTE_OFFSET);
// Copy palette info into buffer
for( i = PALETTE_OFFSET; i < (PALETTE_SIZE+PALETTE_OFFSET); i++)
{
*dest++ = *src++;
}
GrOffScreen24BPPInit(&g_s35_480x272x24Display, g_pucBuffer, LCD_WIDTH, LCD_HEIGHT);
// Initialize a drawing context.
GrContextInit(&g_sContext, &g_s35_480x272x24Display);
/* enable End of frame interrupt */
RasterEndOfFrameIntEnable(SOC_LCDC_0_REGS);
/* enable raster */
RasterEnable(SOC_LCDC_0_REGS);
//
// Fill the top 24 rows of the screen with blue to create the banner.
//
sRect.sXMin = 0;
sRect.sYMin = 0;
sRect.sXMax = GrContextDpyWidthGet(&g_sContext) - 1;
sRect.sYMax = 23;
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_sFontCm20);
GrStringDrawCentered(&g_sContext, "usb-dev-serial", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 10, 0);
//
// Show the various static text elements on the color STN display.
//
GrContextFontSet(&g_sContext, TEXT_FONT);
GrStringDraw(&g_sContext, "Tx bytes:", -1, 8, 80, false);
GrStringDraw(&g_sContext, "Tx buffer:", -1, 8, 105, false);
GrStringDraw(&g_sContext, "Rx bytes:", -1, 8, 160, false);
GrStringDraw(&g_sContext, "Rx buffer:", -1, 8, 185, false);
DrawBufferMeter(&g_sContext, 150, 105);
DrawBufferMeter(&g_sContext, 150, 185);
//
// Tell the user what we are up to.
//
DisplayStatus(&g_sContext, " Configuring USB... ");
//
//Initialize the Rx and TX Buffers
//
USBBufferInit((tUSBBuffer *)&g_sTxBuffer);
USBBufferInit((tUSBBuffer *)&g_sRxBuffer);
//
// Pass our device information to the USB library and place the device
// on the bus.
//
USBDCDCInit(0, (tUSBDCDCDevice *)&g_sCDCDevice);
//
// Wait for initial configuration to complete.
//
DisplayStatus(&g_sContext, " Waiting for host... ");
//
// Clear our local byte counters.
//
ulRxCount = 0;
ulTxCount = 0;
/* Configuring the system clocks for UART0 instance. */
UART0ModuleClkConfig();
/* Performing the Pin Multiplexing for UART0 instance. */
UARTPinMuxSetup(0);
/* Performing a module reset. */
UARTModuleReset(SOC_UART_0_REGS);
/* Performing Baud Rate settings. */
UartBaudRateSet();
/* Switching to Configuration Mode B. */
UARTRegConfigModeEnable(SOC_UART_0_REGS, UART_REG_CONFIG_MODE_B);
/* Programming the Line Characteristics. */
UARTLineCharacConfig(SOC_UART_0_REGS,
(UART_FRAME_WORD_LENGTH_8 | UART_FRAME_NUM_STB_1),
UART_PARITY_NONE);
/* Disabling write access to Divisor Latches. */
UARTDivisorLatchDisable(SOC_UART_0_REGS);
/* Disabling Break Control. */
UARTBreakCtl(SOC_UART_0_REGS, UART_BREAK_COND_DISABLE);
/* Switching to UART16x operating mode. */
UARTOperatingModeSelect(SOC_UART_0_REGS, UART16x_OPER_MODE);
/* Performing FIFO configurations. */
UartFIFOConfigure();
/* Preparing the 'intFlags' variable to be passed as an argument.*/
intFlags |= (UART_INT_LINE_STAT | UART_INT_RHR_CTI);
/* Enable the Interrupts in UART.*/
UARTIntEnable(SOC_UART_0_REGS, intFlags);
//
// Main application loop.
//
while(1)
{
//
// Have we been asked to update the status display?
//
if(g_ulFlags & COMMAND_STATUS_UPDATE)
{
//
// Clear the command flag
//
Intstatus = IntDisable();
g_ulFlags &= ~COMMAND_STATUS_UPDATE;
IntEnable(Intstatus);
DisplayStatus(&g_sContext, g_pcStatus);
}
//
// Has there been any transmit traffic since we last checked?
//
if(ulTxCount != g_ulUARTTxCount)
{
//
// Take a snapshot of the latest transmit count.
//
ulTxCount = g_ulUARTTxCount;
//
// Update the display of bytes transmitted by the UART.
//
usnprintf(pcBuffer, 16, "%d ", ulTxCount);
GrStringDraw(&g_sContext, pcBuffer, -1, 150, 80, true);
//
// Update the RX buffer fullness. Remember that the buffers are
// named relative to the USB whereas the status display is from
// the UART's perspective. The USB's receive buffer is the UART's
// transmit buffer.
//
ulFullness = ((USBBufferDataAvailable(&g_sRxBuffer) * 100) /
UART_BUFFER_SIZE);
UpdateBufferMeter(&g_sContext, ulFullness, 150, 105);
}
//
// Has there been any receive traffic since we last checked?
//
if(ulRxCount != g_ulUARTRxCount)
{
//
// Take a snapshot of the latest receive count.
//
ulRxCount = g_ulUARTRxCount;
//
// Update the display of bytes received by the UART.
//
usnprintf(pcBuffer, 16, "%d ", ulRxCount);
GrStringDraw(&g_sContext, pcBuffer, -1, 150, 160, true);
//
// Update the TX buffer fullness. Remember that the buffers are
// named relative to the USB whereas the status display is from
// the UART's perspective. The USB's transmit buffer is the UART's
// receive buffer.
//
ulFullness = ((USBBufferDataAvailable(&g_sTxBuffer) * 100) /
UART_BUFFER_SIZE);
UpdateBufferMeter(&g_sContext, ulFullness, 150, 185);
}
}
}
//*****************************************************************************
//
// This is the main application entry function.
//
//*****************************************************************************
int
main(void)
{
unsigned long ulTxCount;
unsigned long ulRxCount;
unsigned long ulLoop;
//
// 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_GPIOD);
ROM_GPIOPinTypeUSBAnalog(GPIO_PORTD_BASE, GPIO_PIN_5 | GPIO_PIN_4);
//
// Enable the GPIO port that is used for the on-board LED.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
//
// Enable the GPIO pins for the LED (PF2 & PF3).
//
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_3|GPIO_PIN_2);
//
// Not configured initially.
//
g_bUSBConfigured = false;
//
// Enable the UART that we will be redirecting.
//
ROM_SysCtlPeripheralEnable(USB_UART_PERIPH);
//
// Enable and configure the UART RX and TX pins
//
ROM_SysCtlPeripheralEnable(TX_GPIO_PERIPH);
ROM_SysCtlPeripheralEnable(RX_GPIO_PERIPH);
ROM_GPIOPinTypeUART(TX_GPIO_BASE, TX_GPIO_PIN);
ROM_GPIOPinTypeUART(RX_GPIO_BASE, RX_GPIO_PIN);
//
// TODO: Add code to configure handshake GPIOs if required.
//
//
// Set the default UART configuration.
//
ROM_UARTConfigSetExpClk(USB_UART_BASE, ROM_SysCtlClockGet(),
DEFAULT_BIT_RATE, DEFAULT_UART_CONFIG);
ROM_UARTFIFOLevelSet(USB_UART_BASE, UART_FIFO_TX4_8, UART_FIFO_RX4_8);
//
// Configure and enable UART interrupts.
//
ROM_UARTIntClear(USB_UART_BASE, ROM_UARTIntStatus(USB_UART_BASE, false));
ROM_UARTIntEnable(USB_UART_BASE, (UART_INT_OE | UART_INT_BE | UART_INT_PE |
UART_INT_FE | UART_INT_RT | UART_INT_TX | UART_INT_RX));
//
// Enable the system tick.
//
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / SYSTICKS_PER_SECOND);
ROM_SysTickIntEnable();
ROM_SysTickEnable();
//
// Initialize the transmit and receive buffers.
//
USBBufferInit((tUSBBuffer *)&g_sTxBuffer);
USBBufferInit((tUSBBuffer *)&g_sRxBuffer);
//
// Set the USB stack mode to Device mode with VBUS monitoring.
//
USBStackModeSet(0, USB_MODE_DEVICE, 0);
//
// Pass our device information to the USB library and place the device
// on the bus.
//
USBDCDCInit(0, (tUSBDCDCDevice *)&g_sCDCDevice);
//
// Clear our local byte counters.
//
ulRxCount = 0;
ulTxCount = 0;
//
// Enable interrupts now that the application is ready to start.
//
ROM_IntEnable(USB_UART_INT);
//
// Main application loop.
//
while(1)
{
//
// Have we been asked to update the status display?
//
if(g_ulFlags & COMMAND_STATUS_UPDATE)
{
//
// Clear the command flag
//
ROM_IntMasterDisable();
g_ulFlags &= ~COMMAND_STATUS_UPDATE;
ROM_IntMasterEnable();
}
//
// Has there been any transmit traffic since we last checked?
//
if(ulTxCount != g_ulUARTTxCount)
{
//
// Turn on the Green LED.
//
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, GPIO_PIN_3);
//
// Delay for a bit.
//
for(ulLoop = 0; ulLoop < 150000; ulLoop++)
{
}
//
// Turn off the Green LED.
//
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_3, 0);
//
// Take a snapshot of the latest transmit count.
//
ulTxCount = g_ulUARTTxCount;
}
//
// Has there been any receive traffic since we last checked?
//
if(ulRxCount != g_ulUARTRxCount)
{
//
// Turn on the Blue LED.
//
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, GPIO_PIN_2);
//
// Delay for a bit.
//
for(ulLoop = 0; ulLoop < 150000; ulLoop++)
{
}
//
// Turn off the Blue LED.
//
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, 0);
//
// Take a snapshot of the latest receive count.
//
ulRxCount = g_ulUARTRxCount;
}
}
}
