pll_drv.h

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00013 
00014 /* Copyright (c) 2007, Atmel Corporation All rights reserved.
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00040 
00041 
00042 #ifndef PLL_DRV_H
00043 #define PLL_DRV_H
00044 
00045 //_____ I N C L U D E S ____________________________________________________
00046 
00050 //_____ M A C R O S ________________________________________________________
00051 
00055 #define PLLx06          ( (0<<PLLP2) | (0<<PLLP1) | (0<<PLLP0) )
00056 #define PLLx03          ( (0<<PLLP2) | (0<<PLLP1) | (1<<PLLP0) )
00057 
00058 
00063 #define Start_pll(clockfactor)                                                  \
00064            (PLLCSR = ( clockfactor  | (1<<PLLE)  ))
00065 
00067 #define Is_pll_ready()       (PLLCSR & (1<<PLOCK) )
00068 
00070 #define Wait_pll_ready()     while (!(PLLCSR & (1<<PLOCK)))
00071 
00073 #define Stop_pll()           (PLLCSR  &= (~(1<<PLLE)),PLLCSR=0 ) 
00074 
00075       // Start the PLL in autofactor mode
00076       // regarding FOSC define
00077 #if   (FOSC==8000)
00080    #define Pll_start_auto()   Start_pll(PLLx06)
00081 #elif (FOSC==16000)
00082    #define Pll_start_auto()   Start_pll(PLLx03)
00083 #else
00084    #error   "FOSC should be defined in config.h"
00085 #endif
00086 
00088 
00090 #endif  // PLL_DRV_H
00091 
00092 

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