int
main(void)
{
tContext sContext;
tRectangle sRect;
//
// The FPU should be enabled because some compilers will use floating-
// point registers, even for non-floating-point code. If the FPU is not
// enabled this will cause a fault. This also ensures that floating-
// point operations could be added to this application and would work
// correctly and use the hardware floating-point unit. Finally, lazy
// stacking is enabled for interrupt handlers. This allows floating-
// point instructions to be used within interrupt handlers, but at the
// expense of extra stack usage.
//
FPUEnable();
FPULazyStackingEnable();
//
// Set the clock to 40Mhz derived from the PLL and the external oscillator
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_5 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ |
SYSCTL_OSC_MAIN);
//
// Initialize the display driver.
//
Adafruit320x240x16_ILI9325Init();
//
// Initialize the graphics context.
//
GrContextInit(&sContext, &g_sAdafruit320x240x16_ILI9325);
//
// Configure and enable uDMA
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
SysCtlDelay(10);
uDMAControlBaseSet(&sDMAControlTable[0]);
uDMAEnable();
//
// Initialize the touch screen driver and have it route its messages to the
// widget tree.
//
TouchScreenInit();
//
// Paint touch calibration targets and collect calibration data
//
GrContextForegroundSet(&sContext, ClrWhite);
GrContextBackgroundSet(&sContext, ClrBlack);
GrContextFontSet(&sContext, &g_sFontCm20);
GrStringDraw(&sContext, "Touch center of circles to calibrate", -1, 0, 0, 1);
GrCircleDraw(&sContext, 32, 24, 10);
GrFlush(&sContext);
TouchScreenCalibrationPoint(32, 24, 0);
GrCircleDraw(&sContext, 280, 200, 10);
GrFlush(&sContext);
TouchScreenCalibrationPoint(280, 200, 1);
GrCircleDraw(&sContext, 200, 40, 10);
GrFlush(&sContext);
TouchScreenCalibrationPoint(200, 40, 2);
//
// Calculate and set calibration matrix
//
long* plCalibrationMatrix = TouchScreenCalibrate();
//
// Write out calibration data if successful
//
if(plCalibrationMatrix)
{
char pcStringBuf[20];
usprintf(pcStringBuf, "A %d", plCalibrationMatrix[0]);
GrStringDraw(&sContext, pcStringBuf, -1, 0, 20, 1);
usprintf(pcStringBuf, "B %d", plCalibrationMatrix[1]);
GrStringDraw(&sContext, pcStringBuf, -1, 0, 40, 1);
usprintf(pcStringBuf, "C %d", plCalibrationMatrix[2]);
GrStringDraw(&sContext, pcStringBuf, -1, 0, 60, 1);
usprintf(pcStringBuf, "D %d", plCalibrationMatrix[3]);
GrStringDraw(&sContext, pcStringBuf, -1, 0, 80, 1);
usprintf(pcStringBuf, "E %d", plCalibrationMatrix[4]);
GrStringDraw(&sContext, pcStringBuf, -1, 0, 100, 1);
usprintf(pcStringBuf, "F %d", plCalibrationMatrix[5]);
GrStringDraw(&sContext, pcStringBuf, -1, 0, 120, 1);
usprintf(pcStringBuf, "Div %d", plCalibrationMatrix[6]);
GrStringDraw(&sContext, pcStringBuf, -1, 0, 140, 1);
TouchScreenCalibrationPoint(0,0,0); // wait for dummy touch
}
//
// Enable touch screen event handler for grlib widgets
//
TouchScreenCallbackSet(WidgetPointerMessage);
//
// Fill the top 24 rows of the screen with blue to create the banner.
//
sRect.sXMin = 0;
sRect.sYMin = 0;
sRect.sXMax = GrContextDpyWidthGet(&sContext) - 1;
sRect.sYMax = 23;
GrContextForegroundSet(&sContext, ClrDarkBlue);
GrRectFill(&sContext, &sRect);
//
// Put a white box around the banner.
//
GrContextForegroundSet(&sContext, ClrWhite);
GrRectDraw(&sContext, &sRect);
//
// Put the application name in the middle of the banner.
//
GrContextFontSet(&sContext, &g_sFontCm20);
GrStringDrawCentered(&sContext, "grlib demo", -1,
GrContextDpyWidthGet(&sContext) / 2, 8, 0);
//
// Add the title block and the previous and next buttons to the widget
// tree.
//
WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sPrevious);
WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sTitle);
WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sNext);
//
// Add the first panel to the widget tree.
//
g_ulPanel = 0;
WidgetAdd(WIDGET_ROOT, (tWidget *)g_psPanels);
CanvasTextSet(&g_sTitle, g_pcPanelNames[0]);
//
// Issue the initial paint request to the widgets.
//
WidgetPaint(WIDGET_ROOT);
//
// Loop forever handling widget messages.
//
while(1)
{
//
// Process any messages in the widget message queue.
//
WidgetMessageQueueProcess();
}
}
//*****************************************************************************
//
// A simple demonstration of the features of the TivaWare Graphics Library.
//
//*****************************************************************************
int
main(void)
{
tContext sContext;
tRectangle sRect;
//
// The FPU should be enabled because some compilers will use floating-
// point registers, even for non-floating-point code. If the FPU is not
// enabled this will cause a fault. This also ensures that floating-
// point operations could be added to this application and would work
// correctly and use the hardware floating-point unit. Finally, lazy
// stacking is enabled for interrupt handlers. This allows floating-
// point instructions to be used within interrupt handlers, but at the
// expense of extra stack usage.
//
FPUEnable();
FPULazyStackingEnable();
//
// 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);
//
// Initialize the display driver.
//
Kentec320x240x16_SSD2119Init(g_ui32SysClock);
//
// Initialize the graphics context.
//
GrContextInit(&sContext, &g_sKentec320x240x16_SSD2119);
//
// Fill the top 24 rows of the screen with blue to create the banner.
//
sRect.i16XMin = 0;
sRect.i16YMin = 0;
sRect.i16XMax = GrContextDpyWidthGet(&sContext) - 1;
sRect.i16YMax = 23;
GrContextForegroundSet(&sContext, ClrDarkBlue);
GrRectFill(&sContext, &sRect);
//
// Put a white box around the banner.
//
GrContextForegroundSet(&sContext, ClrWhite);
GrRectDraw(&sContext, &sRect);
//
// Put the application name in the middle of the banner.
//
GrContextFontSet(&sContext, &g_sFontCm20);
GrStringDrawCentered(&sContext, "grlib demo", -1,
GrContextDpyWidthGet(&sContext) / 2, 8, 0);
//
// Configure and enable uDMA
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
SysCtlDelay(10);
uDMAControlBaseSet(&psDMAControlTable[0]);
uDMAEnable();
//
// Initialize the touch screen driver and have it route its messages to the
// widget tree.
//
TouchScreenInit(g_ui32SysClock);
TouchScreenCallbackSet(WidgetPointerMessage);
//
// Add the title block and the previous and next buttons to the widget
// tree.
//
WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sPrevious);
WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sTitle);
WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sNext);
//
// Add the first panel to the widget tree.
//
g_ui32Panel = 0;
WidgetAdd(WIDGET_ROOT, (tWidget *)g_psPanels);
CanvasTextSet(&g_sTitle, g_pcPanei32Names[0]);
//
// Issue the initial paint request to the widgets.
//
WidgetPaint(WIDGET_ROOT);
//
// Loop forever handling widget messages.
//
while(1) {
//
// Process any messages in the widget message queue.
//
WidgetMessageQueueProcess();
}
}
//*****************************************************************************
//
// This is the main loop that runs the application.
//
//*****************************************************************************
int
main(void)
{
tRectangle sRect;
//
// Set the clocking to run directly from the crystal.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_8MHZ);
//
// Enable the USB mux GPIO.
//
ROM_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.
//
ROM_GPIOPinTypeGPIOOutput(USB_MUX_GPIO_BASE, USB_MUX_GPIO_PIN);
ROM_GPIOPinWrite(USB_MUX_GPIO_BASE, USB_MUX_GPIO_PIN, USB_MUX_SEL_DEVICE);
//
// Configure SysTick for a 100Hz interrupt. The FatFs driver wants a 10 ms
// tick.
//
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / 100);
ROM_SysTickEnable();
ROM_SysTickIntEnable();
//
// Configure and enable uDMA
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
SysCtlDelay(10);
uDMAControlBaseSet(&sDMAControlTable[0]);
uDMAEnable();
//
// 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 = DISPLAY_BANNER_HEIGHT;
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, "usb_dev_msc", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 7, 0);
//
// Initialize the idle timeout and reset all flags.
//
g_ulIdleTimeout = 0;
g_ulFlags = 0;
//
// Initialize the state to idle.
//
g_eMSCState = MSC_DEV_IDLE;
//
// Draw the status bar and set it to idle.
//
UpdateStatus("Idle", 1);
//
// Pass our device information to the USB library and place the device
// on the bus.
//
USBDMSCInit(0, (tUSBDMSCDevice *)&g_sMSCDevice);
//
// Drop into the main loop.
//
while(1)
{
switch(g_eMSCState)
{
case MSC_DEV_READ:
{
//
// Update the screen if necessary.
//
if(g_ulFlags & FLAG_UPDATE_STATUS)
{
UpdateStatus("Reading", 0);
g_ulFlags &= ~FLAG_UPDATE_STATUS;
}
//
// If there is no activity then return to the idle state.
//
if(g_ulIdleTimeout == 0)
{
UpdateStatus("Idle ", 0);
g_eMSCState = MSC_DEV_IDLE;
}
break;
}
case MSC_DEV_WRITE:
{
//
// Update the screen if necessary.
//
if(g_ulFlags & FLAG_UPDATE_STATUS)
{
UpdateStatus("Writing", 0);
g_ulFlags &= ~FLAG_UPDATE_STATUS;
}
//
// If there is no activity then return to the idle state.
//
if(g_ulIdleTimeout == 0)
{
UpdateStatus("Idle ", 0);
g_eMSCState = MSC_DEV_IDLE;
}
break;
}
case MSC_DEV_IDLE:
default:
{
break;
}
}
}
}
//*****************************************************************************
//
// 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;
}
}
}
}
//*****************************************************************************
//
//! Initialize the sound driver.
//!
//! This function initializes the audio hardware components of the EVALBOT,
//! in preparation for playing sounds using the sound driver.
//!
//! \return None.
//
//*****************************************************************************
void
SoundInit(void)
{
//
// Set the current active buffer to zero.
//
g_ulPlaying = 0;
//
// Enable and reset the peripheral.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2S0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
//
// Set up the pin mux.
//
GPIOPinConfigure(GPIO_PB6_I2S0TXSCK);
GPIOPinConfigure(GPIO_PE4_I2S0TXWS);
GPIOPinConfigure(GPIO_PE5_I2S0TXSD);
GPIOPinConfigure(GPIO_PF1_I2S0TXMCLK);
//
// Select alternate functions for all of the I2S pins.
//
SysCtlPeripheralEnable(I2S0_SCLKTX_PERIPH);
GPIOPinTypeI2S(I2S0_SCLKTX_PORT, I2S0_SCLKTX_PIN);
SysCtlPeripheralEnable(I2S0_MCLKTX_PERIPH);
GPIOPinTypeI2S(I2S0_MCLKTX_PORT, I2S0_MCLKTX_PIN);
SysCtlPeripheralEnable(I2S0_LRCTX_PERIPH);
GPIOPinTypeI2S(I2S0_LRCTX_PORT, I2S0_LRCTX_PIN);
SysCtlPeripheralEnable(I2S0_SDATX_PERIPH);
GPIOPinTypeI2S(I2S0_SDATX_PORT, I2S0_SDATX_PIN);
//
// Set up the DMA.
//
uDMAControlBaseSet(&DMAControlTable[0]);
uDMAEnable();
//
// Initialize the DAC.
//
DACInit();
//
// Set the FIFO trigger limit
//
I2STxFIFOLimitSet(I2S0_BASE, 4);
//
// Clear out all pending interrupts.
//
I2SIntClear(I2S0_BASE, I2S_INT_TXERR | I2S_INT_TXREQ );
//
// Disable all uDMA attributes.
//
uDMAChannelAttributeDisable(UDMA_CHANNEL_I2S0TX, UDMA_ATTR_ALL);
//
// Enable the I2S Tx controller.
//
I2STxEnable(I2S0_BASE);
}
void camera_init()
{
Serial_puts(UART_DEBUG_MODULE, "inside \"camera_init\"\r\n", 100);
// Calculate the PWM clock frequency
camera_PWMClockFreq = SysCtlClockGet() / CAMERA_CLOCK_DIV;
DEBUG_LINE("camera_init");
// Enable the PWM peripheral
SysCtlPeripheralEnable(SYSCTL_PERIPH_PWM0);
// Enable the GPIO port
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
// Configure PD0 as the PWM output for the drive motor
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_7);
GPIOPinConfigure(GPIO_PB7_M0PWM1);
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_4);
GPIOPinConfigure(GPIO_PB4_M0PWM2);
// Set the camera clock pulse period
PWMGenConfigure(PWM0_BASE, PWM_GEN_0, PWM_GEN_MODE_DOWN);
PWMGenPeriodSet(PWM0_BASE, PWM_GEN_0, CAMERA_SAMPLE_PERIOD - 1);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_1, (CAMERA_SAMPLE_PERIOD / 2) - 1);
// Set the camera enable pulse period
PWMGenConfigure(PWM0_BASE, PWM_GEN_1, PWM_GEN_MODE_DOWN);
PWMGenPeriodSet(PWM0_BASE, PWM_GEN_1, (CAMERA_SAMPLE_PERIOD * CAMERA_SAMPLES) - 1);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_2, ((CAMERA_SAMPLE_PERIOD / 2) * 2) - 1);
DEBUG_LINE("camera_init");
// Enable the PWM output
PWMOutputState(PWM0_BASE, PWM_OUT_1_BIT | PWM_OUT_2_BIT, true);
PWMGenEnable(PWM0_BASE, PWM_GEN_0);
PWMGenEnable(PWM0_BASE, PWM_GEN_1);
PWMSyncTimeBase(PWM0_BASE, PWM_GEN_0_BIT | PWM_GEN_1_BIT);
// Enable PWM trigger on zero count on Generator 0
PWMGenIntTrigEnable(PWM0_BASE, PWM_GEN_0, PWM_TR_CNT_ZERO); // PWM_TR_CNT_ZERO/PWM_TR_CNT_LOAD
// Trigger an interrupt on GEN1 load (to setup the uDMA transfer on a consistent time boundary)
PWMGenIntTrigEnable(PWM0_BASE, PWM_GEN_1, PWM_INT_CNT_LOAD);
DEBUG_LINE("camera_init");
/********************************************
* ADC CONFIGURATION *
********************************************
*/
// Enable ADC0 module
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
DEBUG_LINE("camera_init");
ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PIOSC | ADC_CLOCK_RATE_FULL, 1);
DEBUG_LINE("camera_init");
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
// Camera Far
GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_3);
// Camera Near
GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_2);
DEBUG_LINE("camera_init");
// Configure and enable the ADC sequence; single sample
ADCSequenceConfigure(ADC0_BASE, 3, ADC_TRIGGER_PWM0, 0);
ADCSequenceStepConfigure(ADC0_BASE, 3, 0, ADC_CTL_CH0 | ADC_CTL_IE | ADC_CTL_END);
ADCSequenceEnable(ADC0_BASE, 3);
DEBUG_LINE("camera_init");
ADCSequenceDMAEnable(ADC0_BASE, 3);
DEBUG_LINE("camera_init");
// Start writing into the first buffer
camera_DBSelected = 0;
current_Camera = FAR;
// Expose the other buffer
camera_buffer = camera_DoubleBuffer[1];
/********************************************
* uDMA CONFIGURATION *
********************************************
*/
// Enable the uDMA for normal and sleep operation
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_UDMA);
uDMAEnable();
DEBUG_LINE("camera_init");
// Set the position of the uDMA control table
uDMAControlBaseSet(uDMAControlTable);
// Put the uDMA table entry for ADC3 into a known state
uDMAChannelAttributeDisable(UDMA_CHANNEL_ADC3,
UDMA_ATTR_USEBURST |
UDMA_ATTR_ALTSELECT |
UDMA_ATTR_HIGH_PRIORITY |
UDMA_ATTR_REQMASK);
// Configure the primary and alternate uDMA channel structures
uDMAChannelControlSet(UDMA_CHANNEL_ADC3 | UDMA_PRI_SELECT, UDMA_SIZE_16 | UDMA_SRC_INC_NONE | UDMA_DST_INC_16 | UDMA_ARB_1);
uDMAChannelControlSet(UDMA_CHANNEL_ADC3 | UDMA_ALT_SELECT, UDMA_SIZE_16 | UDMA_SRC_INC_NONE | UDMA_DST_INC_16 | UDMA_ARB_1);
// Configure the primary and alternate transfers for ping-pong operation
uDMAChannelTransferSet(UDMA_CHANNEL_ADC3 | UDMA_PRI_SELECT, UDMA_MODE_PINGPONG, (void*) (ADC0_BASE + ADC_O_SSFIFO3), camera_DoubleBuffer[0], CAMERA_SAMPLES);
uDMAChannelTransferSet(UDMA_CHANNEL_ADC3 | UDMA_ALT_SELECT, UDMA_MODE_PINGPONG, (void*) (ADC0_BASE + ADC_O_SSFIFO3), camera_DoubleBuffer[1], CAMERA_SAMPLES);
DEBUG_LINE("camera_init");
// Enable the ADC3 uDMA channel
uDMAChannelEnable(UDMA_CHANNEL_ADC3);
// Enable interrupts
// IntEnable(INT_ADC0SS3);
// ADCIntEnableEx(ADC0_BASE, ADC_INT_DMA_SS3);
IntEnable(INT_PWM0_1);
PWMIntEnable(PWM0_BASE, PWM_INT_GEN_1);
DEBUG_LINE("camera_init");
}
void InitADC3Transfer(void) {
unsigned int uIdx = 0;
// Set data as not ready to be processed
adcNode[0].g_ucDataReady = 0;
// Init buffers by setting them all to 0
// Should go from 0 to 2048
for (uIdx = 0; uIdx < NUM_SAMPLES ; uIdx++) {
g_ulADCValues[uIdx] = 0;
}
SysCtlPeripheralEnable(SYSCTL_PERIPH_UDMA);
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
SysCtlPeripheralReset(SYSCTL_PERIPH_ADC0);
IntEnable(INT_UDMAERR);
uDMAEnable();
uDMAControlBaseSet(ucControlTable);
//
// Configure the ADC to use PLL at 480 MHz divided by 24 to get an ADC
// clock of 20 MHz.
//
//ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PLL | ADC_CLOCK_RATE_FULL, 24);
ADCSequenceConfigure(ADC0_BASE, SEQUENCER, ADC_TRIGGER_TIMER, 0);
#ifdef test_w_internal_temp
ADCSequenceStepConfigure(ADC0_BASE, SEQUENCER, 0, ADC_CTL_TS |
ADC_CTL_IE | ADC_CTL_END); // internal temperator
#endif
ADCSequenceStepConfigure(ADC0_BASE, SEQUENCER, 0, ADC_CTL_CH0 |
ADC_CTL_IE | ADC_CTL_END); //PE3
ADCSequenceEnable(ADC0_BASE, SEQUENCER);
ADCIntEnable(ADC0_BASE, SEQUENCER);
uDMAChannelAttributeDisable(UDMA_CHANNEL_ADC3,
UDMA_ATTR_ALTSELECT | UDMA_ATTR_USEBURST |
UDMA_ATTR_HIGH_PRIORITY |
UDMA_ATTR_REQMASK);
uDMAChannelControlSet(UDMA_CHANNEL_ADC3 | UDMA_PRI_SELECT,
UDMA_SIZE_16 | UDMA_SRC_INC_NONE |
UDMA_DST_INC_16 | UDMA_ARB_1);
if (g_ucDMAMethod == DMA_METHOD_SLOW) {
g_ucDMApingpong = 0;
uDMAChannelTransferSet(UDMA_CHANNEL_ADC3 | UDMA_PRI_SELECT,
UDMA_MODE_BASIC,
(void *) (ADC0_BASE + ADC_O_SSFIFO3 + (0x20 * UDMA_ARB_1)),
g_usDMAping, DMA_SIZE);
} else {
if (NUM_SAMPLES > UDMA_XFER_MAX) {
uDMAChannelTransferSet(UDMA_CHANNEL_ADC3 | UDMA_PRI_SELECT,
UDMA_MODE_BASIC,
(void *) (ADC0_BASE + ADC_O_SSFIFO3 + (0x20 * UDMA_ARB_1)),
g_ulADCValues, UDMA_XFER_MAX);
} else {
uDMAChannelTransferSet(UDMA_CHANNEL_ADC3 | UDMA_PRI_SELECT,
UDMA_MODE_BASIC,
(void *) (ADC0_BASE + ADC_O_SSFIFO3 + (0x20 * UDMA_ARB_1)),
g_ulADCValues, NUM_SAMPLES);
}
}
uDMAChannelEnable(UDMA_CHANNEL_ADC3);
}
//*****************************************************************************
//
// Main function, setup DMA and perform flash write. Verify the transaction.
//
//*****************************************************************************
int
main(void)
{
uint16_t i;
int32_t i32Res;
//
// Set the clocking to run directly from the external crystal/oscillator.
// (no ext 32k osc, no internal osc)
//
SysCtrlClockSet(false, false, SYS_CTRL_SYSDIV_32MHZ);
//
// Set IO clock to the same as system clock
//
SysCtrlIOClockSet(SYS_CTRL_SYSDIV_32MHZ);
//
// Set up the serial console to use for displaying messages. This is
// just for this example program and is not needed for Systick operation.
//
InitConsole();
//
// Display the setup on the console.
//
UARTprintf("Example - Write to Flash using DMA.\n");
//
// Erase Flash page that will hold our transferred data
//
i32Res = FlashMainPageErase(PAGE_TO_ERASE_START_ADDR);
ASSERT(i32Res==0);
//
// Fill Source buffer (to be copied to flash) with some data
//
for(i=0; i<256; i++)
{
ucSourceBuffer[i] = '0' + (i % 10);
}
//
// Enable the uDMA controller.
//
uDMAEnable();
//
// Disable the uDMA channel to be used, before modifications are done.
//
uDMAChannelDisable(UDMA_CH2_FLASH);
//
// Set the base for the channel control table.
//
uDMAControlBaseSet(&ucDMAControlTable[0]);
//
// Assign the DMA channel
//
uDMAChannelAssign(UDMA_CH2_FLASH);
//
// Set attributes for the channel.
//
uDMAChannelAttributeDisable(UDMA_CH2_FLASH, UDMA_ATTR_HIGH_PRIORITY);
//
// Now set up the characteristics of the transfer.
// 32-bit data size, with source increments in words (32 bits),
// no destination increment.
// A bus arbitration size of 1 must be used.
//
uDMAChannelControlSet(UDMA_CH2_FLASH, UDMA_SIZE_32 | UDMA_SRC_INC_32 |
UDMA_DST_INC_NONE | UDMA_ARB_1);
//
// Set transfer parameters.
// Source address is the location of the data to write
// and destination address is the FLASH_CTRL_FWDATA register.
//
uDMAChannelTransferSet(UDMA_CH2_FLASH, UDMA_MODE_BASIC, ucSourceBuffer,
(void *) FLASH_CTRL_FWDATA, sizeof(ucSourceBuffer));
//
// Asure that the flash controller is not busy.
//
while(HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY)
{
}
//
// Initialize Flash control register without changing the cache mode.
//
HWREG(FLASH_CTRL_FCTL) &= FLASH_CTRL_FCTL_CM_M;
//
// Setup Flash Address register to address of first data word (32-bit)
//
HWREG(FLASH_CTRL_FADDR) = PAGE_TO_ERASE_START_ADDR;
//
// Finally, the DMA channel must be enabled.
//
uDMAChannelEnable(UDMA_CH2_FLASH);
//
// Set FCTL.WRITE, to trigger flash write
//
HWREG(FLASH_CTRL_FCTL) |= FLASH_CTRL_FCTL_WRITE;
//
// Wait until all words has been programmed.
//
while( HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_FULL )
{
}
//
// Check if flash write was successfull
//
if (HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_ABORT)
{
UARTprintf("Write not successful!\n");
}
else
{
UARTprintf("Write success!\n");
}
//
// Set control register back to reset value without changing the cache mode.
//
HWREG(FLASH_CTRL_FCTL) &= FLASH_CTRL_FCTL_CM_M;
//
// Compare source buffer and destination flash page
//
if(memcmp(ucSourceBuffer, (void*) PAGE_TO_ERASE_START_ADDR, 256)==0)
{
UARTprintf("Buffer compares to flash page!\n");
}
else
{
UARTprintf("Buffer does not compare to flash page!\n");
}
//
// We are done, loop forever
//
while(1)
{
}
}
//*****************************************************************************
//
// Configure the SysTick and SysTick interrupt with a period of 1 second.
//
//*****************************************************************************
int
main(void)
{
uint16_t i;
//
// Set the clocking to run directly from the external crystal/oscillator.
// (no ext 32k osc, no internal osc)
//
SysCtrlClockSet(false, false, SYS_CTRL_SYSDIV_32MHZ);
//
// Set IO clock to the same as system clock
//
SysCtrlIOClockSet(SYS_CTRL_SYSDIV_32MHZ);
//
// Set up the serial console to use for displaying messages. This is
// just for this example program and is not needed for Systick operation.
//
InitConsole();
//
// Display the setup on the console.
//
UARTprintf("DMA SW example mem to mem!\n");
//
// Fill Source buffer with some data
//
for(i=0; i<256; i++)
{
ucSourceBuffer[i] = '0' + (i % 10);
}
//
// Enable the uDMA controller.
//
uDMAEnable();
//
// Set the base for the channel control table.
//
uDMAControlBaseSet(&ucDMAControlTable[0]);
//
// No attributes must be set for a software-based transfer.
// The attributes are cleared by default, but are explicitly cleared
// here, in case they were set elsewhere.
//
uDMAChannelAttributeDisable(UDMA_CH30_SW, UDMA_ATTR_ALL);
//
// Now set up the characteristics of the transfer for
// 8-bit data size, with source and destination increments
// in bytes, and a byte-wise buffer copy. A bus arbitration
// size of 8 is used.
//
uDMAChannelControlSet(UDMA_CH30_SW | UDMA_PRI_SELECT,
UDMA_SIZE_8 | UDMA_SRC_INC_8 |
UDMA_DST_INC_8 | UDMA_ARB_8);
//
// The transfer buffers and transfer size are now configured.
// The transfer uses AUTO mode, which means that the
// transfer automatically runs to completion after the first
// request.
//
uDMAChannelTransferSet(UDMA_CH30_SW | UDMA_PRI_SELECT,
UDMA_MODE_AUTO, ucSourceBuffer, ucDestBuffer,
sizeof(ucDestBuffer));
//
// Enable Interrupt for DMA
//
IntEnable(INT_UDMA);
//
// Finally, the channel must be enabled. Because this is a
// software-initiated transfer, a request must also be made.
// The request starts the transfer.
//
uDMAChannelEnable(UDMA_CH30_SW);
uDMAChannelRequest(UDMA_CH30_SW);
//
// Put cpu to sleep and wait for interrupt (when DMA transfer is done)
//
SysCtrlSleep();
//
// Loop forever while the SysTick runs.
//
while(1)
{
}
}
