- Main Page
- Related Pages
- Modules
- Data Structures
- Files

- File List
- Globals

# adc_drv.c

Go to the documentation of this file.

    00001 /*This file is prepared for Doxygen automatic documentation generation.*/
    00013
    00014 /* Copyright (c) 2009 Atmel Corporation. All rights reserved.
    00015  *
    00016  * Redistribution and use in source and binary forms, with or without
    00017  * modification, are permitted provided that the following conditions are met:
    00018  *
    00019  * 1. Redistributions of source code must retain the above copyright notice,
    00020  * this list of conditions and the following disclaimer.
    00021  *
    00022  * 2. Redistributions in binary form must reproduce the above copyright notice,
    00023  * this list of conditions and the following disclaimer in the documentation
    00024  * and/or other materials provided with the distribution.
    00025  *
    00026  * 3. The name of Atmel may not be used to endorse or promote products derived
    00027  * from this software without specific prior written permission.
    00028  *
    00029  * 4. This software may only be redistributed and used in connection with an Atmel
    00030  * AVR product.
    00031  *
    00032  * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
    00033  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    00034  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
    00035  * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
    00036  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    00037  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    00038  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    00039  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    00040  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
    00041  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00042  */
    00043
    00044 //_____  I N C L U D E S ___________________________________________________
    00045
    00046 #include "config.h"
    00047
    00048 #ifdef USE_ADC //!< this define is set on config.h file
    00049 #include "adc_drv.h"
    00050
    00051 //_____ M A C R O S ________________________________________________________
    00052
    00053
    00054 //_____ P R I V A T E    D E C L A R A T I O N _____________________________
    00055
    00056
    00057 //_____ D E F I N I T I O N ________________________________________________
    00058
    00059
    00060 //_____ D E C L A R A T I O N ______________________________________________
    00065 void init_adc(void)
    00066 {
    00067     Enable_adc();
    00068 #   if (ADC_RIGHT_ADJUST_RESULT == 1)
    00069        Right_adjust_adc_result();
    00070 #   elif (ADC_RIGHT_ADJUST_RESULT == 0)
    00071        Left_adjust_adc_result();
    00072 #   else
    00073 #      error (ADC_RIGHT_ADJUST_RESULT should be 0 or 1... See config.h file)
    00074 #   endif
    00075
    00076 #   if (ADC_HIGH_SPEED_MODE == 1)
    00077        Enable_adc_high_speed_mode();
    00078 #   elif (ADC_HIGH_SPEED_MODE == 0)
    00079        Disable_adc_high_speed_mode();
    00080 #   else
    00081 #      error (ADC_HIGH_SPEED_MODE should be 0 or 1... See config.h file)
    00082 #   endif
    00083
    00084 #   if (ADC_INTERNAL_VREF == 2)
    00085        Enable_vcc_vref();
    00086 #   elif (ADC_INTERNAL_VREF == 1)
    00087        Enable_internal_vref();
    00088 #   elif (ADC_INTERNAL_VREF == 0)
    00089        Enable_vcc_vref();
    00090 #   else
    00091 #      error (ADC_INTERNAL_VREF should be 0, 1 or 2... See config.h file)
    00092 #   endif
    00093
    00094 #   if (ADC_IT == 1)
    00095        Enable_all_it();
    00096        Enable_adc_it();
    00097 #   elif (ADC_IT == 0)
    00098        Disable_adc_it();
    00099 #   else
    00100 #      error (ADC_IT should be 0 or 1... See config.h file)
    00101 #   endif
    00102
    00103 #   if (ADC_PRESCALER == 128)
    00104        Set_adc_prescaler(7);
    00105 #   elif (ADC_PRESCALER == 64)
    00106        Set_adc_prescaler(6);
    00107 #   elif (ADC_PRESCALER == 32)
    00108        Set_adc_prescaler(5);
    00109 #   elif (ADC_PRESCALER == 16)
    00110        Set_adc_prescaler(4);
    00111 #   elif (ADC_PRESCALER ==  8)
    00112        Set_adc_prescaler( 3);
    00113 #   elif (ADC_PRESCALER ==  4)
    00114        Set_adc_prescaler( 2);
    00115 #   elif (ADC_PRESCALER ==  2)
    00116        Set_adc_prescaler( 1);
    00117 #   else
    00118 #      error (ADC_PRESCALER should be 2, 4, 8, 16, 32, 64 or 128... See config.h file)
    00119 #   endif
    00120 }
    00121
    00122 #endif // USE_ADC