s_temperature.c File Reference

#include <string.h>
#include <stdio.h>
#include "compiler.h"
#include "s_temperature.h"
#include "board.h"
#include "gpio.h"
#include "adc.h"

Functions
bool	b_temperature_get_value (char *buf)
	Get the current temperature value. More...

Variables
static volatile avr32_adc_t *	adc = (volatile avr32_adc_t *) &AVR32_ADC
const unsigned short	temperature_code []
	The following table give the correspondence between the ADC code and the temperature Each elements of the table corresponds to an ADC code value. More...

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.

References adc, adc_disable(), adc_enable(), adc_get_value(), adc_start(), ADC_TEMPERATURE_CHANNEL, and temperature_code.

Referenced by device_full_custom_task().

volatile avr32_adc_t* adc = (volatile avr32_adc_t *) &AVR32_ADC

static

ADC cell.

const unsigned short temperature_code[]

Initial value:

={
   0x3B4,0x3B0,0x3AB,0x3A6,0x3A0,0x39A,0x394,0x38E,0x388,0x381,0x37A,0x373,
   0x36B,0x363,0x35B,0x353,0x34A,0x341,0x338,0x32F,0x325,0x31B,0x311,0x307,
   0x2FC,0x2F1,0x2E6,0x2DB,0x2D0,0x2C4,0x2B8,0x2AC,0x2A0,0x294,0x288,0x27C,
   0x26F,0x263,0x256,0x24A,0x23D,0x231,0x225,0x218,0x20C,0x200,0x1F3,0x1E7,
   0x1DB,0x1CF,0x1C4,0x1B8,0x1AC,0x1A1,0x196,0x18B,0x180,0x176,0x16B,0x161,
   0x157,0x14D,0x144,0x13A,0x131,0x128,0x11F,0x117,0x10F,0x106,0xFE,0xF7,
   0xEF,0xE8,0xE1,0xDA,0xD3,0xCD,0xC7,0xC0,0xBA,0xB5,0xAF,0xAA,0xA4,0x9F,
   0x9A,0x96,0x91,0x8C,0x88,0x84,0x80,0x7C,0x78,0x74,0x71,0x6D,0x6A,0x67,
   0x64,0x61,0x5E,0x5B,0x58,0x55,0x53,0x50,0x4E,0x4C,0x49,0x47,0x45,0x43,
   0x41,0x3F,0x3D,0x3C,0x3A,0x38}

The following table give the correspondence between the ADC code and the temperature Each elements of the table corresponds to an ADC code value.

The index in the table give the corresponding temperature (inC) with the following formula : Tempeature=index-20. table[O] corresponds to -20C temperature code The following table gives the ADC code for VCC=3.3V and Aref=AVcc

Referenced by b_temperature_get_value().