Michael Wei / Mbed 2 deprecated ClockControl

see http://mbed.org/users/no2chem/notebook/mbed-clock-control--benchmarks/

Dependencies:   mbed

ClockControl/ClockControl.cpp@0:b5d3bd64d2dc, 2010-01-24 (annotated)

Committer:
no2chem
Date:
Sun Jan 24 15:46:26 2010 +0000
Revision:
0:b5d3bd64d2dc

        

        
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no2chem

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#include "ClockControl.h"





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void setPLL0Frequency(unsigned char clkSrc, unsigned short M, unsigned char N)





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{





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      LPC_SC->CLKSRCSEL = clkSrc;





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      LPC_SC->PLL0CFG   = (((unsigned int)N-1) << 16) | M-1;





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      LPC_SC->PLL0CON   = 0x01;             





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      LPC_SC->PLL0FEED  = 0xAA;





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      LPC_SC->PLL0FEED  = 0x55;





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      while (!(LPC_SC->PLL0STAT & (1<<26)));





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      LPC_SC->PLL0CON   = 0x03;





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      LPC_SC->PLL0FEED  = 0xAA;





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      LPC_SC->PLL0FEED  = 0x55;





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}





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void setPLL1Frequency(unsigned char clkSrc, unsigned short M, unsigned char N)





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{





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      LPC_SC->CLKSRCSEL = clkSrc;





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      LPC_SC->PLL1CFG   = (((unsigned int)N-1) << 16) | M-1;





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      LPC_SC->PLL1CON   = 0x01;             





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      LPC_SC->PLL1FEED  = 0xAA;





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      LPC_SC->PLL1FEED  = 0x55;





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      while (!(LPC_SC->PLL1STAT & (1<<26)));





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      LPC_SC->PLL1CON   = 0x03;





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      LPC_SC->PLL1FEED  = 0xAA;





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      LPC_SC->PLL1FEED  = 0x55;





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}





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unsigned int setSystemFrequency(unsigned char clkDivider, unsigned char clkSrc, unsigned short M, unsigned char N)





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{





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    setPLL0Frequency(clkSrc, M, N);





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    LPC_SC->CCLKCFG = clkDivider - 1;





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    SystemCoreClockUpdate();





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    return SystemCoreClock;





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}