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# pll_drv.h

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    00001 /*This file has been prepared for Doxygen automatic documentation generation.*/
    00013
    00014 /* Copyright (c) 2007, 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  * THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
    00030  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    00031  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
    00032  * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
    00033  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    00034  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    00035  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    00036  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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    00038  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00039  */
    00040
    00041 #ifndef PLL_DRV_H
    00042 #define PLL_DRV_H
    00043
    00044 //_____ I N C L U D E S ____________________________________________________
    00045
    00049 //_____ M A C R O S ________________________________________________________
    00050
    00054 #define PLLx24          ( (0<<PLLP2) | (0<<PLLP1) | (0<<PLLP0) )
    00055 #define PLLx12          ( (0<<PLLP2) | (0<<PLLP1) | (1<<PLLP0) )
    00056 #define PLLx08          ( (0<<PLLP2) | (1<<PLLP1) | (0<<PLLP0) )
    00057 #define PLLx06          ( (0<<PLLP2) | (1<<PLLP1) | (1<<PLLP0) )
    00058 #define PLLx04          ( (1<<PLLP2) | (0<<PLLP1) | (0<<PLLP0) )
    00059
    00060 #ifdef __ICCAVR__
    00061    #if (defined(__AT90USB1287__) || defined(__AT90USB1286__))
    00062       #define PLLx03          ( (1<<PLLP2) | (0<<PLLP1) | (1<<PLLP0) )
    00063    #elif (defined(__AT90USB647__) || defined(__AT90USB646__))
    00064       #define PLLx03          ( (1<<PLLP2) | (1<<PLLP1) | (0<<PLLP0) )
    00065    #else
    00066       #error TARGET should be defined
    00067    #endif
    00068 #elif defined __GNUC__
    00069    #if (defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB1286__))
    00070       #define PLLx03          ( (1<<PLLP2) | (0<<PLLP1) | (1<<PLLP0) )
    00071    #elif (defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB646__))
    00072       #define PLLx03          ( (1<<PLLP2) | (1<<PLLP1) | (0<<PLLP0) )
    00073    #endif
    00074 #else // Other compiler
    00075    #error Compiler unknow
    00076 #endif
    00077
    00078 #define PLLx04_8        ( (1<<PLLP2) | (1<<PLLP1) | (0<<PLLP0) )
    00079 #define PLLx02          ( (1<<PLLP2) | (1<<PLLP1) | (1<<PLLP0) )
    00080
    00081
    00086 #define Start_pll(clockfactor)                                                  \
    00087            (PLLCSR = ( clockfactor  | (1<<PLLE)  ))
    00088
    00090 #define Is_pll_ready()       (PLLCSR & (1<<PLOCK) )
    00091
    00093 #define Wait_pll_ready()     while (!(PLLCSR & (1<<PLOCK)))
    00094
    00096 #define Stop_pll()           (PLLCSR  &= (~(1<<PLLE)),PLLCSR=0 )
    00097
    00098
    00099 #ifdef CUSTOM_PLL_START_AUTO
    00100    #define    Pll_start_auto()   CUSTOM_PLL_START_AUTO
    00101 #else
    00102       // Start the PLL in autofactor mode
    00103       // regarding FOSC define
    00104 #if   (FOSC==2000)
    00107    #define Pll_start_auto()   Start_pll(PLLx24)
    00108 #elif (FOSC==4000)
    00109    #define Pll_start_auto()   Start_pll(PLLx12)
    00110 #elif (FOSC==6000)
    00111    #define Pll_start_auto()   Start_pll(PLLx08)
    00112 #elif (FOSC==8000)
    00115    #define Pll_start_auto()   Start_pll(PLLx06)
    00116 #elif (FOSC==12000)
    00117    #define Pll_start_auto()   Start_pll(PLLx04)
    00118 #elif (FOSC==16000)
    00119    #define Pll_start_auto()   Start_pll(PLLx03)
    00120 #elif (FOSC==20000)
    00121    #define Pll_start_auto()   Start_pll(PLLx04_8)
    00122 #elif (FOSC==24000)
    00123    #define Pll_start_auto()   Start_pll(PLLx02)
    00124 #else
    00125    #error   "FOSC should be defined in config.h"
    00126 #endif
    00127 #endif
    00128
    00130
    00132 #endif  // PLL_DRV_H
    00133
    00134