usb_key.c

Go to the documentation of this file.
00001 
00002 
00003 
00004 
00005 
00006 
00007 
00008 
00009 
00010 
00011 
00012 
00013 
00014 //_____  I N C L U D E S ___________________________________________________
00015 
00016 #include "config.h"
00017 #include "usb_key.h"
00018 
00019 #ifdef USE_ADC       
00020 #include "lib_mcu\adc\adc_drv.h"
00021 
00022 //_____ M A C R O S ________________________________________________________
00023 
00024 
00025 //_____ P R I V A T E    D E C L A R A T I O N _____________________________
00026 
00027 
00028 //_____ D E F I N I T I O N ________________________________________________
00029 
00036 code U16 temperature_code[]={  0x3B4,0x3B0,0x3AB,0x3A6,0x3A0,0x39A,0x394,0x38E,0x388,0x381,0x37A,0x373,
00037    0x36B,0x363,0x35B,0x353,0x34A,0x341,0x338,0x32F,0x325,0x31B,0x311,0x307,
00038    0x2FC,0x2F1,0x2E6,0x2DB,0x2D0,0x2C4,0x2B8,0x2AC,0x2A0,0x294,0x288,0x27C,
00039    0x26F,0x263,0x256,0x24A,0x23D,0x231,0x225,0x218,0x20C,0x200,0x1F3,0x1E7,
00040    0x1DB,0x1CF,0x1C4,0x1B8,0x1AC,0x1A1,0x196,0x18B,0x180,0x176,0x16B,0x161,
00041    0x157,0x14D,0x144,0x13A,0x131,0x128,0x11F,0x117,0x10F,0x106,0xFE,0xF7,
00042    0xEF,0xE8,0xE1,0xDA,0xD3,0xCD,0xC7,0xC0,0xBA,0xB5,0xAF,0xAA,0xA4,0x9F,
00043    0x9A,0x96,0x91,0x8C,0x88,0x84,0x80,0x7C,0x78,0x74,0x71,0x6D,0x6A,0x67,
00044    0x64,0x61,0x5E,0x5B,0x58,0x55,0x53,0x50,0x4E,0x4C,0x49,0x47,0x45,0x43,
00045    0x41,0x3F,0x3D,0x3C,0x3A,0x38};
00046 
00047 
00048 //_____ D E C L A R A T I O N ______________________________________________
00049 
00050 U16 Get_adc_temp_val(void)
00051 {
00052    Start_conv_channel(ADC_TEMP_CH);
00053    while (!Is_adc_conv_finished());
00054    return (U16)(ADCL+((U16)(ADCH<<8)));
00055 }
00056 
00057 S16 Read_temperature(void)
00058 {
00059 #ifndef AVRGCC
00060    U16 adc_code;
00061    S8 index=0;
00062    adc_code=Get_adc_temp_val();
00063    if(adc_code>temperature_code[0])
00064    {
00065       return (S16)(-20);
00066    }
00067    else
00068    {
00069       while(temperature_code[index++]>adc_code);
00070       return (S16)(index-1-20);
00071    }
00072 #else
00073    U16 adc_code;
00074    S8 index=0;
00075    adc_code=Get_adc_temp_val();
00076    if(adc_code>pgm_read_word_near(&temperature_code))
00077    {
00078       return (S16)(-20);
00079    }
00080    else
00081    {
00082       while(pgm_read_word_near(&temperature_code[index++])>adc_code);
00083       return (S16)(index-1-20);
00084    }   
00085 
00086 #endif
00087 }
00088 
00089 
00090 #endif // USE_ADC

Generated on Fri Mar 17 16:02:03 2006 for Atmel by  doxygen 1.4.6-NO