pll_drv.h

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00014 /* Copyright (c) 2007, Atmel Corporation All rights reserved.
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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 

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