pll_drv.h

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00013 
00014 /* Copyright (c) 2009 Atmel Corporation. All rights reserved.
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00043 
00044 
00045 #ifndef PLL_DRV_H
00046 #define PLL_DRV_H
00047 
00048 //_____ I N C L U D E S ____________________________________________________
00049 
00053 //_____ M A C R O S ________________________________________________________
00054 
00058 #define PLLx06          ( (0<<PLLP2) | (0<<PLLP1) | (0<<PLLP0) )
00059 #define PLLx03          ( (0<<PLLP2) | (0<<PLLP1) | (1<<PLLP0) )
00060 
00061 
00066 #define Start_pll(clockfactor)                                                  \
00067            (PLLCSR = ( clockfactor  | (1<<PLLE)  ))
00068 
00070 #define Is_pll_ready()       (PLLCSR & (1<<PLOCK) )
00071 
00073 #define Wait_pll_ready()     while (!(PLLCSR & (1<<PLOCK)))
00074 
00076 #define Stop_pll()           (PLLCSR  &= (~(1<<PLLE)),PLLCSR=0 ) 
00077 
00078       // Start the PLL in autofactor mode
00079       // regarding FOSC define
00080 
00081 #ifdef CUSTOM_PLL_START_AUTO
00082    #define    Pll_start_auto()   CUSTOM_PLL_START_AUTO
00083 #else
00084 #if   (FOSC==8000)
00087    #define Pll_start_auto()   Start_pll(PLLx06)
00088 #elif (FOSC==16000)
00089    #define Pll_start_auto()   Start_pll(PLLx03)
00090 #else
00091    #error   "FOSC should be defined in config.h"
00092 #endif
00093 #endif
00095 
00097 #endif  // PLL_DRV_H
00098 
00099 

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