//*****************************************************************************
//
// Main 'C' Language entry point.
//
//*****************************************************************************
int
main(void)
{
float fAmbient, fObject;
int_fast32_t i32IntegerPart;
int_fast32_t i32FractionPart;
//
// Setup the system clock to run at 40 Mhz from PLL with crystal reference
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_5 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ |
SYSCTL_OSC_MAIN);
//
// Enable the peripherals used by this example.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
//
// Initialize the UART.
//
ConfigureUART();
//
// Print the welcome message to the terminal.
//
UARTprintf("\033[2J\033[1;1HTMP006 Example\n");
//
// Setup the color of the RGB LED.
//
g_pui32Colors[RED] = 0;
g_pui32Colors[BLUE] = 0xFFFF;
g_pui32Colors[GREEN] = 0;
//
// Initialize the RGB Driver and start RGB blink operation.
//
RGBInit(0);
RGBColorSet(g_pui32Colors);
RGBIntensitySet(0.5f);
RGBEnable();
//
// The I2C3 peripheral must be enabled before use.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C3);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
//
// Configure the pin muxing for I2C3 functions on port D0 and D1.
// This step is not necessary if your part does not support pin muxing.
//
ROM_GPIOPinConfigure(GPIO_PD0_I2C3SCL);
ROM_GPIOPinConfigure(GPIO_PD1_I2C3SDA);
//
// Select the I2C function for these pins. This function will also
// configure the GPIO pins pins for I2C operation, setting them to
// open-drain operation with weak pull-ups. Consult the data sheet
// to see which functions are allocated per pin.
//
GPIOPinTypeI2CSCL(GPIO_PORTD_BASE, GPIO_PIN_0);
ROM_GPIOPinTypeI2C(GPIO_PORTD_BASE, GPIO_PIN_1);
//
// Configure and Enable the GPIO interrupt. Used for DRDY from the TMP006
//
ROM_GPIOPinTypeGPIOInput(GPIO_PORTE_BASE, GPIO_PIN_0);
GPIOIntEnable(GPIO_PORTE_BASE, GPIO_PIN_0);
ROM_GPIOIntTypeSet(GPIO_PORTE_BASE, GPIO_PIN_0, GPIO_FALLING_EDGE);
ROM_IntEnable(INT_GPIOE);
//
// Keep only some parts of the systems running while in sleep mode.
// GPIOE is for the TMP006 data ready interrupt.
// UART0 is the virtual serial port
// TIMER0, TIMER1 and WTIMER5 are used by the RGB driver
// I2C3 is the I2C interface to the TMP006
//
ROM_SysCtlPeripheralClockGating(true);
ROM_SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_GPIOE);
ROM_SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_UART0);
ROM_SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_TIMER0);
ROM_SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_TIMER1);
ROM_SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_I2C3);
ROM_SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_WTIMER5);
//
// Enable interrupts to the processor.
//
ROM_IntMasterEnable();
//
// Initialize I2C3 peripheral.
//
I2CMInit(&g_sI2CInst, I2C3_BASE, INT_I2C3, 0xff, 0xff,
SysCtlClockGet());
//
// Initialize the TMP006
//
TMP006Init(&g_sTMP006Inst, &g_sI2CInst, TMP006_I2C_ADDRESS,
TMP006AppCallback, &g_sTMP006Inst);
//
// Put the processor to sleep while we wait for the I2C driver to
// indicate that the transaction is complete.
//
while((g_vui8DataFlag == 0) && (g_vui8ErrorFlag == 0))
{
ROM_SysCtlSleep();
}
//
// If an error occurred call the error handler immediately.
//
if(g_vui8ErrorFlag)
{
TMP006AppErrorHandler(__FILE__, __LINE__);
}
//
// clear the data flag for next use.
//
g_vui8DataFlag = 0;
//
// Delay for 10 milliseconds for TMP006 reset to complete.
// Not explicitly required. Datasheet does not say how long a reset takes.
//
ROM_SysCtlDelay(ROM_SysCtlClockGet() / (100 * 3));
//
// Enable the DRDY pin indication that a conversion is in progress.
//
TMP006ReadModifyWrite(&g_sTMP006Inst, TMP006_O_CONFIG,
~TMP006_CONFIG_EN_DRDY_PIN_M,
TMP006_CONFIG_EN_DRDY_PIN, TMP006AppCallback,
&g_sTMP006Inst);
//
// Wait for the DRDY enable I2C transaction to complete.
//
while((g_vui8DataFlag == 0) && (g_vui8ErrorFlag == 0))
{
ROM_SysCtlSleep();
}
//
// If an error occurred call the error handler immediately.
//
if(g_vui8ErrorFlag)
{
TMP006AppErrorHandler(__FILE__, __LINE__);
}
//
// clear the data flag for next use.
//
g_vui8DataFlag = 0;
//
// Last thing before the loop start blinking to show we got this far and
// the tmp006 is setup and ready for auto measure
//
RGBBlinkRateSet(1.0f);
//
// Loop Forever
//
while(1)
{
//
// Put the processor to sleep while we wait for the TMP006 to
// signal that data is ready. Also continue to sleep while I2C
// transactions get the raw data from the TMP006
//
while((g_vui8DataFlag == 0) && (g_vui8ErrorFlag == 0))
{
ROM_SysCtlSleep();
}
//
// If an error occurred call the error handler immediately.
//
if(g_vui8ErrorFlag)
{
TMP006AppErrorHandler(__FILE__, __LINE__);
}
//
// Reset the flag
//
g_vui8DataFlag = 0;
//
// Get a local copy of the latest data in float format.
//
TMP006DataTemperatureGetFloat(&g_sTMP006Inst, &fAmbient, &fObject);
//
// Convert the floating point ambient temperature to an integer part
// and fraction part for easy printing.
//
i32IntegerPart = (int32_t)fAmbient;
i32FractionPart = (int32_t)(fAmbient * 1000.0f);
i32FractionPart = i32FractionPart - (i32IntegerPart * 1000);
if(i32FractionPart < 0)
{
i32FractionPart *= -1;
}
UARTprintf("Ambient %3d.%03d\t", i32IntegerPart, i32FractionPart);
//
// Convert the floating point ambient temperature to an integer part
// and fraction part for easy printing.
//
i32IntegerPart = (int32_t)fObject;
i32FractionPart = (int32_t)(fObject * 1000.0f);
i32FractionPart = i32FractionPart - (i32IntegerPart * 1000);
if(i32FractionPart < 0)
{
i32FractionPart *= -1;
}
UARTprintf("Object %3d.%03d\n", i32IntegerPart, i32FractionPart);
}
}
void printTemperatureData(void){
float fAmbient, fObject;
int_fast32_t i32IntegerPart;
int_fast32_t i32FractionPart;
uint32_t ui32LEDState;
// Toggle LED 3 on each time through the loop.
//
//LEDRead(&ui32LEDState);
LEDWrite(CLP_D3, (ui32LEDState ^ CLP_D3));
//
// Put the processor to sleep while we wait for the TMP006 to
// signal that data is ready. Also continue to sleep while I2C
// transactions get the raw data from the TMP006
//
while((g_vui8DataFlag == 0) && (g_vui8ErrorFlag == 0))
{
ROM_SysCtlSleep();
}
//
// If an error occurred call the error handler immediately.
//
if(g_vui8ErrorFlag)
{
TMP006AppErrorHandler(__FILE__, __LINE__);
}
//
// Reset the flag
//
g_vui8DataFlag = 0;
//
// Get a local copy of the latest data in float format.
//
TMP006DataTemperatureGetFloat(&g_sTMP006Inst, &fAmbient, &fObject);
//
// Convert the floating point ambient temperature to an integer part
// and fraction part for easy printing.
//
i32IntegerPart = (int32_t)fAmbient;
i32FractionPart = (int32_t)(fAmbient * 1000.0f);
i32FractionPart = i32FractionPart - (i32IntegerPart * 1000);
if(i32FractionPart < 0)
{
i32FractionPart *= -1;
}
UARTprintf("Ambient %3d.%03d\t", i32IntegerPart, i32FractionPart);
//
// Convert the floating point ambient temperature to an integer part
// and fraction part for easy printing.
//
i32IntegerPart = (int32_t)fObject;
i32FractionPart = (int32_t)(fObject * 1000.0f);
i32FractionPart = i32FractionPart - (i32IntegerPart * 1000);
if(i32FractionPart < 0)
{
i32FractionPart *= -1;
}
UARTprintf("Object %3d.%03d\n", i32IntegerPart, i32FractionPart);
}
