void UARTStdioInit(void) {
/* Performing the Pin Multiplexing for UART0 instance. */
/* RXD */
HWREG(SOC_CONTROL_REGS + CONTROL_CONF_UART_RXD(0)) =
(CONTROL_CONF_UART0_RXD_CONF_UART0_RXD_PUTYPESEL |
CONTROL_CONF_UART0_RXD_CONF_UART0_RXD_RXACTIVE);
/* TXD */
HWREG(SOC_CONTROL_REGS + CONTROL_CONF_UART_TXD(0)) =
CONTROL_CONF_UART0_TXD_CONF_UART0_TXD_PUTYPESEL;
moduleEnable(MODULE_ID_UART0);
UARTModuleReset(UART_CONSOLE_BASE);
/* Performing FIFO configurations. */
UartFIFOConfigure(1, 1);
/* Performing Baud Rate settings. */
UartBaudRateSet(115200);
/* Switching to Configuration Mode B. */
UARTRegConfigModeEnable(UART_CONSOLE_BASE, UART_REG_CONFIG_MODE_B);
/* Programming the Line Characteristics. */
UARTLineCharacConfig(UART_CONSOLE_BASE,
(UART_FRAME_WORD_LENGTH_8 | UART_FRAME_NUM_STB_1),
UART_PARITY_NONE);
/* Disabling write access to Divisor Latches. */
UARTDivisorLatchDisable(UART_CONSOLE_BASE);
/* Disabling Break Control. */
UARTBreakCtl(UART_CONSOLE_BASE, UART_BREAK_COND_DISABLE);
/* Switching to UART16x operating mode. */
UARTOperatingModeSelect(UART_CONSOLE_BASE, UART16x_OPER_MODE);
}
/******************************************************************************
* *
* \brief This function sets or clears a break condition on the redirected *
* UART RX line. A break is started when the function is called with *
* bSend set to true and persists until the function is called again *
* with \e bSend set to \b false.\n *
* *
* \return none.\n *
* *
******************************************************************************/
static void SendBreak(tBoolean bSend)
{
/* Are we being asked to start or stop the break condition? */
if(!bSend)
{
/* Remove the break condition on the line. */
UARTBreakCtl(USB_UART_BASE, false);
g_bSendingBreak = false;
}
else
{
/* Start sending a break condition on the line. */
UARTBreakCtl(USB_UART_BASE, true);
g_bSendingBreak = true;
}
}
/******************************************************************************
* *
* \brief Serial initilalization routine. *
* *
* \param none. *
* *
* \return none. *
* *
******************************************************************************/
void SerialInit(void)
{
unsigned int intFlags = 0;
USBBufferInit((tUSBBuffer *)&g_sTxBuffer);
USBBufferInit((tUSBBuffer *)&g_sRxBuffer);
/* 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);
}
/*
** This function initializes the UART instance for use.
*/
static void UARTInitialize(void)
{
/* Performing a module reset. */
UARTModuleReset(UART_INSTANCE_BASE_ADD);
#ifdef UART_ENABLE_FIFO
/* Performing FIFO configurations. */
UartFIFOConfigure();
#else
/* Enabling DMA Mode 1. */
UARTDMAEnable(UART_INSTANCE_BASE_ADD, UART_DMA_MODE_1_ENABLE);
#endif
#if (defined UART_ENABLE_FIFO) && (defined DIRECT_TX_DMA_THRESH_MODE)
/* Selecting the method of setting the Transmit DMA Threshold value. */
UARTTxDMAThresholdControl(UART_INSTANCE_BASE_ADD, UART_TX_DMA_THRESHOLD_REG);
/* Configuring the Transmit DMA Threshold value. */
UARTTxDMAThresholdValConfig(UART_INSTANCE_BASE_ADD, TX_DMA_THRESHOLD);
#endif
/* Performing Baud Rate settings. */
UartBaudRateSet();
/* Switching to Configuration Mode B. */
UARTRegConfigModeEnable(UART_INSTANCE_BASE_ADD, UART_REG_CONFIG_MODE_B);
/* Programming the Line Characteristics. */
UARTLineCharacConfig(UART_INSTANCE_BASE_ADD,
(UART_FRAME_WORD_LENGTH_8 | UART_FRAME_NUM_STB_1),
UART_PARITY_NONE);
/* Disabling write access to Divisor Latches. */
UARTDivisorLatchDisable(UART_INSTANCE_BASE_ADD);
/* Disabling Break Control. */
UARTBreakCtl(UART_INSTANCE_BASE_ADD, UART_BREAK_COND_DISABLE);
/* Switching to UART16x operating mode. */
UARTOperatingModeSelect(UART_INSTANCE_BASE_ADD, UART16x_OPER_MODE);
}
/* Configure polling IO on default UART */
void
bwio_uart_setup(void)
{
/* Set pin mux */
UARTPinMuxSetup(0);
/* Reset the UART */
UARTModuleReset(BWIO_UART);
/* Set the BAUD rate */
unsigned int divisorValue = 0;
/* Computing the Divisor Value. */
divisorValue = UARTDivisorValCompute(UART_MODULE_INPUT_CLK,
BAUD_RATE_115200,
UART16x_OPER_MODE,
UART_MIR_OVERSAMPLING_RATE_42);
/* Programming the Divisor Latches. */
UARTDivisorLatchWrite(BWIO_UART, divisorValue);
/* Switching to Configuration Mode B. */
UARTRegConfigModeEnable(BWIO_UART, UART_REG_CONFIG_MODE_B);
/* Programming the Line Characteristics. */
UARTLineCharacConfig(BWIO_UART,
(UART_FRAME_WORD_LENGTH_8 | UART_FRAME_NUM_STB_1),
UART_PARITY_NONE);
/* Disabling write access to Divisor Latches. */
UARTDivisorLatchDisable(BWIO_UART);
/* Disabling Break Control. */
UARTBreakCtl(BWIO_UART, UART_BREAK_COND_DISABLE);
/* Switching to UART16x operating mode. */
UARTOperatingModeSelect(BWIO_UART, UART16x_OPER_MODE);
}
//*****************************************************************************
//
// 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);
}
}
}
/******************************************************************************
** FUNCTION DEFINITIONS
******************************************************************************/
int main()
{
unsigned int numByteChunks = 0;
unsigned int remainBytes = 0;
unsigned int bIndex = 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 FIFO configurations. */
UartFIFOConfigure();
/* 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);
/* Select the console type based on compile time check */
ConsoleUtilsSetType(CONSOLE_UART);
/* Performing Interrupt configurations. */
UartInterruptEnable();
numByteChunks = (sizeof(txArray) - 1) / NUM_TX_BYTES_PER_TRANS;
remainBytes = (sizeof(txArray) - 1) % NUM_TX_BYTES_PER_TRANS;
while(1)
{
/* This branch is entered if the transmission is not yet complete. */
if(TRUE == txEmptyFlag)
{
if(bIndex < numByteChunks)
{
/* Transmitting bytes in chunks of NUM_TX_BYTES_PER_TRANS. */
currNumTxBytes += UARTFIFOWrite(SOC_UART_0_REGS,&txArray[currNumTxBytes],NUM_TX_BYTES_PER_TRANS);
bIndex++;
}
else
{
/* Transmitting remaining data from the data block. */
currNumTxBytes += UARTFIFOWrite(SOC_UART_0_REGS,&txArray[currNumTxBytes],remainBytes);
}
txEmptyFlag = FALSE;
/*
** Re-enables the Transmit Interrupt. This interrupt
** was disabled in the Transmit section of the UART ISR.
*/
UARTIntEnable(SOC_UART_0_REGS, UART_INT_THR);
}
}
}
/*
** The main function
*/
int main()
{
unsigned int divisorValue = 0;
/* Configuring the system clocks for UART0 instance. */
UART0ModuleClkConfig();
/* Initializing the ARM Interrupt Controller. */
IntAINTCInit();
/* Performing the Pin Multiplexing for UART0 instance. */
UARTPinMuxSetup(0);
/* Performing a module reset. */
UARTModuleReset(UART_INST_BASE);
UARTFIFOConfig(UART_INST_BASE,
UART_FIFO_CONFIG(UART_TRIG_LVL_GRANULARITY_1,
UART_TRIG_LVL_GRANULARITY_1,
1, 1, 1, 1, UART_DMA_EN_PATH_SCR,
UART_DMA_MODE_0_ENABLE));
/* Computing the Divisor Value. */
divisorValue = UARTDivisorValCompute(UART_MODULE_INPUT_CLK,
BAUD_RATE_115200,
UART16x_OPER_MODE,
UART_MIR_OVERSAMPLING_RATE_42);
/* Programming the Divisor Latches. */
UARTDivisorLatchWrite(UART_INST_BASE, divisorValue);
/* Switching to Configuration Mode B. */
UARTRegConfigModeEnable(UART_INST_BASE, UART_REG_CONFIG_MODE_B);
/* Programming the Line Characteristics. */
UARTLineCharacConfig(UART_INST_BASE,
(UART_FRAME_WORD_LENGTH_8 | UART_FRAME_NUM_STB_1),
UART_PARITY_NONE);
/* Disabe write access to Divisor Latches. */
UARTDivisorLatchDisable(UART_INST_BASE);
/* Disable Break Control. */
UARTBreakCtl(UART_INST_BASE, UART_BREAK_COND_DISABLE);
/* Switch to UART16x operating mode. */
UARTOperatingModeSelect(UART_INST_BASE, UART16x_OPER_MODE);
UARTIntEnable(UART_INST_BASE, (UART_INT_LINE_STAT | UART_INT_THR |
UART_INT_RHR_CTI));
/* Register the Interrupt Service Routines */
IntRegister(RTC_INT_NUM, RTCIsr);
IntRegister(UART_INT_NUM, UARTIsr);
IntRegister(TIMER_INT_NUM, DMTimerIsr);
/*
** Setting the priority for the system interrupt in AINTC.
** Timer interrupt is given highest priority - 1
** RTC interrupt is given medium priority - 2
** UART interrupt is given lowest priority - 4
*/
IntPrioritySet(TIMER_INT_NUM, IRQ_PRIORITY_TIMER, AINTC_HOSTINT_ROUTE_IRQ);
IntPrioritySet(RTC_INT_NUM, IRQ_PRIORITY_RTC, AINTC_HOSTINT_ROUTE_IRQ);
IntPrioritySet(UART_INT_NUM, IRQ_PRIORITY_UART, AINTC_HOSTINT_ROUTE_IRQ);
/* Enabling the system interrupt in AINTC for UART */
IntSystemEnable(UART_INT_NUM);
IntMasterIRQEnable();
while(1);
}