s_temperature.h File Reference


Detailed Description

AVR32 UC3 Control Panel temperature sensor interface.

Author:
Atmel Corporation: http://www.atmel.com
Support and FAQ: http://support.atmel.no/

Definition in file s_temperature.h.

#include "compiler.h"
#include "FreeRTOS.h"

Go to the source code of this file.

Functions

Bool b_temperature_get_value (char *buf)
 Get the current temperature value.


Function Documentation

Bool b_temperature_get_value ( char *  buf  ) 

Get the current temperature value.

Parameters:
buf char buffer in which the temperature value is stored.
Returns:
TRUE upon success, FALSE if error.

Definition at line 89 of file s_temperature.c.

References adc, and temperature_code.

Referenced by device_full_custom_task().

00090 {
00091    int i_current_val, value, index = 0;
00092 
00093 
00094    /* enable channel for sensor */
00095    adc_enable( adc, ADC_TEMPERATURE_CHANNEL );
00096    // start conversion
00097    adc_start( adc );
00098    // get value for sensor
00099    value = adc_get_value( adc, ADC_TEMPERATURE_CHANNEL );
00100    /* Disable channel for sensor */
00101    adc_disable( adc, ADC_TEMPERATURE_CHANNEL );
00102    
00103    if(value > temperature_code[0])
00104    {
00105         i_current_val = -20;
00106    }
00107    else
00108    {
00109       while(temperature_code[index++] > value);
00110       i_current_val = (index - 1 - 20);
00111    }
00112 
00113    // Build the log string.
00114    sprintf( buf, "%2dC\r\n", i_current_val);
00115    return TRUE;
00116 }


Generated on Fri Feb 19 02:22:52 2010 for AVR32 - Control Panel demonstration. by  doxygen 1.5.5