temp_sensor.c

ti-Chipcon CC2430 zigbee Soc应用开发源码实例。包括rf,powermodes,clockmodes底层驱动源码。有了这些实例,包括误码率测试等。对你更好的理解和应用这颗芯片

/******************************************************************************
*                                                                             *
*        **********                                                           *
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*      ***        ***                                                         *
*     ***    ++    ***                                                        *
*     ***   +  +   ***                      CHIPCON                           *
*     ***   +                                                                 *
*     ***   +  +   ***                                                        *
*     ***    ++    ***                                                        *
*      ***        ***                                                         *
*       ************                                                          *
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*                                                                             *
*******************************************************************************

Filename:     temp_sensor.c
Target:       cc2430
Author:       kja
Revised:      30/5-2007
Revision:     1.2

Description:

This application show the chip temperature on the LCD display. Please refer
to Design Note DN102 (SWRA101) for details.

NOTE: The offset can be expected to have a variation at +/- 10 for
      individual chip samples.

******************************************************************************/

/******************************************************************************
 * INCLUDES
 */
#include "app_ex.h"
#include "lcd.h"

/******************************************************************************
 * CONSTANTS
 */
#define GRADIENT_C  0.01496
#define OFFSET_C    -300
#define ADC14_TO_CELSIUS(ADC_VALUE)    \
  ( (float)ADC_VALUE *(float)GRADIENT_C + OFFSET_C)

#define GRADIENT_F  (9.0/5.0 * GRADIENT_C)
#define OFFSET_F    (9.0/5.0 * OFFSET_C) + 32
#define ADC14_TO_FARENHEIT(ADC_VALUE)  \
( (float)ADC_VALUE *(float)GRADIENT_F + OFFSET_F)


#define DEGREE_SYMBOL_ADDRESS 0x01

/******************************************************************************
 * TYPEDEFS
 */

/******************************************************************************
 * GLOBAL VARIABLES
 */

/******************************************************************************
 * LOCAL VARIABLES
 */

/******************************************************************************
 * LOCAL FUNCTIONS
 */
void initTempSensor(void);
int8 getTemperature(void);
void temp_sensor_main(void);


/******************************************************************************
* @fn  initTempSensor
*
* @brief
*      Initializes components for use with the temperature sensor
*      application example.
*
* Parameters:
*
* @param  void
*
* @return void
*
******************************************************************************/
void initTempSensor(void){
   DISABLE_ALL_INTERRUPTS();

   SET_MAIN_CLOCK_SOURCE(CRYSTAL);


   initLcd();
}

/******************************************************************************
*
* @fn  getTemperature
*
* @brief
*      Return the temperature measured with the internal temperature sensor.
*
* Parameters:
*
* @param  void
*
* @return temperature
*
******************************************************************************/
int8 getTemperature(void){
  uint16  value;

  // Ref: 1,25 V, Resolution: 14bit, Temperature Sensor
  if( CHVER < REV_C )
  {
    // This is due to errate number #19, CC2430 revision B
    ADCCON2 = ( ADC_REF_1_25_V | ADC_14_BIT | ADC_TEMP_SENS );
    ADCCON1 = 0x73;
    while( !ADC_SAMPLE_READY() );
  }
  else
  {
    ADCIF = 0;
    ADCCON3 = ( ADC_REF_1_25_V | ADC_14_BIT | ADC_TEMP_SENS );
    while( !ADCIF );
  }

  ADC_GET_VALUE( value );

  return ADC14_TO_CELSIUS(value);
  // return ADC14_TO_FARENHEIT(value);
}

/******************************************************************************
*
* @fn  temp_sensor_main
*
* @brief
*
*
* Parameters:
*
* @param  void
*
* @return void
*
******************************************************************************/
#ifdef COMPLETE_APPLICATION
void temp_sensor_main(void){
#else
void main(void){
#endif
   byte  degreeSymbol[] = {0x07, 0x05, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00};
   byte  lcdBuffer[16];
   uint8 temperature;

   initTempSensor();
   initNewSymbol((char *)degreeSymbol, CHAR1_ADDRESS);

   lcdUpdateLine(LINE1, (char *)"Temperature:");

   while( !stopApplication() )
   {
     temperature = getTemperature();

     sprintf((char *)lcdBuffer, "%d%cC (not cal.)", temperature, DEGREE_SYMBOL_ADDRESS);
     lcdUpdateLine(LINE2, (char *)lcdBuffer);

     // wait one second
     halWait(250);
     halWait(250);
     halWait(250);
     halWait(250);
   }
}


/******************************************************************************
* @fn  temp_sensor_init
*
* @brief
*      Initializes the temperature application example.
*
* Parameters:
*
* @param  APPLICATION *a
*         Main application
*
* @return void
*
******************************************************************************/
#ifdef COMPLETE_APPLICATION
void temp_sensor_init(APPLICATION *a){
   a->menuText = (char *)"Temp Sensor";
   a->description = (char *)"";
   a->main_func = temp_sensor_main;
}
#endif