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Use your mbed and it\'s noisy analog inputs as a hardware random number generator!

Dependencies:   mbed SHA256

PowerControl/PowerControl.h@0:dda0a8c4ac0c, 2011-06-20 (annotated)

Committer:
Remco
Date:
Mon Jun 20 13:23:03 2011 +0000
Revision:
0:dda0a8c4ac0c

        

        
Who changed what in which revision?

        

            
                
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/* mbed PowerControl Library





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  * Copyright (c) 2010 Michael Wei





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  */ 





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#ifndef MBED_POWERCONTROL_H 





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#define MBED_POWERCONTROL_H 





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//shouldn't have to include, but fixes weird problems with defines





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#include "LPC1768/LPC17xx.h"





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//System Control Register





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// bit 0: Reserved





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// bit 1: Sleep on Exit





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#define LPC1768_SCR_SLEEPONEXIT     0x2





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// bit 2: Deep Sleep





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#define LPC1768_SCR_SLEEPDEEP       0x4





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// bit 3: Resereved





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// bit 4: Send on Pending





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#define LPC1768_SCR_SEVONPEND        0x10





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// bit 5-31: Reserved





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//Power Control Register





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// bit 0: Power mode control bit 0 (power-down mode)





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#define LPC1768_PCON_PM0            0x1





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// bit 1: Power mode control bit 1 (deep power-down mode)





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#define LPC1768_PCON_PM1            0x2





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// bit 2: Brown-out reduced power mode





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#define LPC1768_PCON_BODRPM         0x4





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// bit 3: Brown-out global disable





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#define LPC1768_PCON_BOGD           0x8





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// bit 4: Brown-out reset disable





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#define LPC1768_PCON_BORD           0x10





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// bit 5-7 : Reserved





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// bit 8: Sleep Mode Entry Flag





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#define LPC1768_PCON_SMFLAG         0x100





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// bit 9: Deep Sleep Entry Flag





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#define LPC1768_PCON_DSFLAG         0x200





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// bit 10: Power Down Entry Flag





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#define LPC1768_PCON_PDFLAG         0x400





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// bit 11: Deep Power Down Entry Flag





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#define LPC1768_PCON_DPDFLAG        0x800





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// bit 12-31: Reserved





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//"Sleep Mode" (WFI).





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inline void Sleep(void)





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{





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    __WFI();





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}





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//"Deep Sleep" Mode





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inline void DeepSleep(void)





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{





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   SCB->SCR |= LPC1768_SCR_SLEEPDEEP;





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   __WFI();





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}





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//"Power-Down" Mode





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inline void PowerDown(void)





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{





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   SCB->SCR |= LPC1768_SCR_SLEEPDEEP;





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   LPC_SC->PCON &= ~LPC1768_PCON_PM1;





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   LPC_SC->PCON |= LPC1768_PCON_PM0;





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   __WFI();





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   //reset back to normal





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  LPC_SC->PCON &= ~(LPC1768_PCON_PM1 | LPC1768_PCON_PM0);





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}





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//"Deep Power-Down" Mode





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inline void DeepPowerDown(void)





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{





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   SCB->SCR |= LPC1768_SCR_SLEEPDEEP;





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   LPC_SC->PCON |= LPC1768_PCON_PM1 | LPC1768_PCON_PM0;





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   __WFI();





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   //reset back to normal





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  LPC_SC->PCON &= ~(LPC1768_PCON_PM1 | LPC1768_PCON_PM0);





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}





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//shut down BOD during power-down/deep sleep





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inline void BrownOut_ReducedPowerMode_Enable(void)





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{





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    LPC_SC->PCON |= LPC1768_PCON_BODRPM;





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}





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//turn on BOD during power-down/deep sleep





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inline void BrownOut_ReducedPowerMode_Disable(void)





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{





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    LPC_SC->PCON &= ~LPC1768_PCON_BODRPM;





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}





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//turn off brown out circutry





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inline void BrownOut_Global_Disable(void)





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{





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    LPC_SC->PCON |= LPC1768_PCON_BOGD;





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}





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//turn on brown out circutry





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inline void BrownOut_Global_Enable(void)





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{





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    LPC_SC->PCON &= !LPC1768_PCON_BOGD;





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}





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//turn off brown out reset circutry





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inline void BrownOut_Reset_Disable(void)





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{





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    LPC_SC->PCON |= LPC1768_PCON_BORD;





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}





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//turn on brown outreset  circutry





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inline void BrownOut_Reset_Enable(void)





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{





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    LPC_SC->PCON &= ~LPC1768_PCON_BORD;





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}





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//Peripheral Control Register





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// bit 0: Reserved





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// bit 1: PCTIM0: Timer/Counter 0 power/clock enable





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#define LPC1768_PCONP_PCTIM0        0x2





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// bit 2: PCTIM1: Timer/Counter 1 power/clock enable





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#define LPC1768_PCONP_PCTIM1        0x4





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// bit 3: PCUART0: UART 0 power/clock enable





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#define LPC1768_PCONP_PCUART0       0x8





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// bit 4: PCUART1: UART 1 power/clock enable





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#define LPC1768_PCONP_PCUART1       0x10





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// bit 5: Reserved





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// bit 6: PCPWM1: PWM 1 power/clock enable





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#define LPC1768_PCONP_PCPWM1        0x40





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// bit 7: PCI2C0: I2C interface 0 power/clock enable





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#define LPC1768_PCONP_PCI2C0        0x80





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// bit 8: PCSPI: SPI interface power/clock enable





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#define LPC1768_PCONP_PCSPI         0x100





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// bit 9: PCRTC: RTC power/clock enable





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#define LPC1768_PCONP_PCRTC         0x200





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// bit 10: PCSSP1: SSP interface 1 power/clock enable





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#define LPC1768_PCONP_PCSSP1        0x400





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// bit 11: Reserved





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// bit 12: PCADC: A/D converter power/clock enable





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#define LPC1768_PCONP_PCADC         0x1000





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// bit 13: PCCAN1: CAN controller 1 power/clock enable





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#define LPC1768_PCONP_PCCAN1        0x2000





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// bit 14: PCCAN2: CAN controller 2 power/clock enable





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#define LPC1768_PCONP_PCCAN2        0x4000





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// bit 15: PCGPIO: GPIOs power/clock enable





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#define LPC1768_PCONP_PCGPIO        0x8000





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// bit 16: PCRIT: Repetitive interrupt timer power/clock enable





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#define LPC1768_PCONP_PCRIT         0x10000





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// bit 17: PCMCPWM: Motor control PWM power/clock enable





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#define LPC1768_PCONP_PCMCPWM       0x20000





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// bit 18: PCQEI: Quadrature encoder interface power/clock enable





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#define LPC1768_PCONP_PCQEI         0x40000





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// bit 19: PCI2C1: I2C interface 1 power/clock enable





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#define LPC1768_PCONP_PCI2C1        0x80000





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// bit 20: Reserved





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// bit 21: PCSSP0: SSP interface 0 power/clock enable





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#define LPC1768_PCONP_PCSSP0        0x200000





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// bit 22: PCTIM2: Timer 2 power/clock enable





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#define LPC1768_PCONP_PCTIM2        0x400000





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// bit 23: PCTIM3: Timer 3 power/clock enable





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#define LPC1768_PCONP_PCQTIM3       0x800000





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// bit 24: PCUART2: UART 2 power/clock enable





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#define LPC1768_PCONP_PCUART2       0x1000000





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// bit 25: PCUART3: UART 3 power/clock enable





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#define LPC1768_PCONP_PCUART3       0x2000000





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// bit 26: PCI2C2: I2C interface 2 power/clock enable





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#define LPC1768_PCONP_PCI2C2        0x4000000





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// bit 27: PCI2S: I2S interface power/clock enable





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#define LPC1768_PCONP_PCI2S         0x8000000





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// bit 28: Reserved





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// bit 29: PCGPDMA: GP DMA function power/clock enable





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#define LPC1768_PCONP_PCGPDMA       0x20000000





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// bit 30: PCENET: Ethernet block power/clock enable





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#define LPC1768_PCONP_PCENET        0x40000000





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// bit 31: PCUSB: USB interface power/clock enable





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#define LPC1768_PCONP_PCUSB         0x80000000





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//Powers Up specified Peripheral(s)





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inline unsigned int Peripheral_PowerUp(unsigned int bitMask)





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{





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    return LPC_SC->PCONP |= bitMask;





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}   





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//Powers Down specified Peripheral(s) 





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inline unsigned int Peripheral_PowerDown(unsigned int bitMask)





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{





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    return LPC_SC->PCONP &= ~bitMask;





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}





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//returns if the peripheral is on or off





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inline bool Peripheral_GetStatus(unsigned int peripheral)





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{





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    return (LPC_SC->PCONP & peripheral) ? true : false;





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}





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#endif