PowerControl.h

00001 /* mbed PowerControl Library
00002   * Copyright (c) 2010 Michael Wei
00003   */ 
00004   
00005 #ifndef MBED_POWERCONTROL_H 
00006 #define MBED_POWERCONTROL_H 
00007 
00008 //shouldn't have to include, but fixes weird problems with defines
00009 //#include "LPC1768/LPC17xx.h"
00010 #include "mbed.h"
00011 
00012 //System Control Register
00013 // bit 0: Reserved
00014 // bit 1: Sleep on Exit
00015 #define LPC1768_SCR_SLEEPONEXIT     0x2
00016 // bit 2: Deep Sleep
00017 #define LPC1768_SCR_SLEEPDEEP       0x4
00018 // bit 3: Resereved
00019 // bit 4: Send on Pending
00020 #define LPC1768_SCR_SEVONPEND        0x10
00021 // bit 5-31: Reserved
00022 
00023 //Power Control Register
00024 // bit 0: Power mode control bit 0 (power-down mode)
00025 #define LPC1768_PCON_PM0            0x1
00026 // bit 1: Power mode control bit 1 (deep power-down mode)
00027 #define LPC1768_PCON_PM1            0x2
00028 // bit 2: Brown-out reduced power mode
00029 #define LPC1768_PCON_BODRPM         0x4
00030 // bit 3: Brown-out global disable
00031 #define LPC1768_PCON_BOGD           0x8
00032 // bit 4: Brown-out reset disable
00033 #define LPC1768_PCON_BORD           0x10
00034 // bit 5-7 : Reserved
00035 // bit 8: Sleep Mode Entry Flag
00036 #define LPC1768_PCON_SMFLAG         0x100
00037 // bit 9: Deep Sleep Entry Flag
00038 #define LPC1768_PCON_DSFLAG         0x200
00039 // bit 10: Power Down Entry Flag
00040 #define LPC1768_PCON_PDFLAG         0x400
00041 // bit 11: Deep Power Down Entry Flag
00042 #define LPC1768_PCON_DPDFLAG        0x800
00043 // bit 12-31: Reserved
00044 
00045 //"Sleep Mode" (WFI).
00046 inline void Sleep(void)
00047 {
00048     __WFI();
00049 }
00050 
00051 //"Deep Sleep" Mode
00052 inline void DeepSleep(void)
00053 {
00054    SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
00055    __WFI();
00056 }
00057 
00058 //"Power-Down" Mode
00059 inline void PowerDown(void)
00060 {
00061    SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
00062    LPC_SC->PCON &= ~LPC1768_PCON_PM1;
00063    LPC_SC->PCON |= LPC1768_PCON_PM0;
00064    __WFI();
00065    //reset back to normal
00066   LPC_SC->PCON &= ~(LPC1768_PCON_PM1 | LPC1768_PCON_PM0);
00067 }
00068 
00069 //"Deep Power-Down" Mode
00070 inline void DeepPowerDown(void)
00071 {
00072    SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
00073    LPC_SC->PCON |= LPC1768_PCON_PM1 | LPC1768_PCON_PM0;
00074    __WFI();
00075    //reset back to normal
00076   LPC_SC->PCON &= ~(LPC1768_PCON_PM1 | LPC1768_PCON_PM0);
00077 }
00078 
00079 //shut down BOD during power-down/deep sleep
00080 inline void BrownOut_ReducedPowerMode_Enable(void)
00081 {
00082     LPC_SC->PCON |= LPC1768_PCON_BODRPM;
00083 }
00084 
00085 //turn on BOD during power-down/deep sleep
00086 inline void BrownOut_ReducedPowerMode_Disable(void)
00087 {
00088     LPC_SC->PCON &= ~LPC1768_PCON_BODRPM;
00089 }
00090 
00091 //turn off brown out circutry
00092 inline void BrownOut_Global_Disable(void)
00093 {
00094     LPC_SC->PCON |= LPC1768_PCON_BOGD;
00095 }
00096 
00097 //turn on brown out circutry
00098 inline void BrownOut_Global_Enable(void)
00099 {
00100     LPC_SC->PCON &= !LPC1768_PCON_BOGD;
00101 }
00102 
00103 //turn off brown out reset circutry
00104 inline void BrownOut_Reset_Disable(void)
00105 {
00106     LPC_SC->PCON |= LPC1768_PCON_BORD;
00107 }
00108 
00109 //turn on brown outreset  circutry
00110 inline void BrownOut_Reset_Enable(void)
00111 {
00112     LPC_SC->PCON &= ~LPC1768_PCON_BORD;
00113 }
00114 //Peripheral Control Register
00115 // bit 0: Reserved
00116 // bit 1: PCTIM0: Timer/Counter 0 power/clock enable
00117 #define LPC1768_PCONP_PCTIM0        0x2
00118 // bit 2: PCTIM1: Timer/Counter 1 power/clock enable
00119 #define LPC1768_PCONP_PCTIM1        0x4
00120 // bit 3: PCUART0: UART 0 power/clock enable
00121 #define LPC1768_PCONP_PCUART0       0x8
00122 // bit 4: PCUART1: UART 1 power/clock enable
00123 #define LPC1768_PCONP_PCUART1       0x10
00124 // bit 5: Reserved
00125 // bit 6: PCPWM1: PWM 1 power/clock enable
00126 #define LPC1768_PCONP_PCPWM1        0x40
00127 // bit 7: PCI2C0: I2C interface 0 power/clock enable
00128 #define LPC1768_PCONP_PCI2C0        0x80
00129 // bit 8: PCSPI: SPI interface power/clock enable
00130 #define LPC1768_PCONP_PCSPI         0x100
00131 // bit 9: PCRTC: RTC power/clock enable
00132 #define LPC1768_PCONP_PCRTC         0x200
00133 // bit 10: PCSSP1: SSP interface 1 power/clock enable
00134 #define LPC1768_PCONP_PCSSP1        0x400
00135 // bit 11: Reserved
00136 // bit 12: PCADC: A/D converter power/clock enable
00137 #define LPC1768_PCONP_PCADC         0x1000
00138 // bit 13: PCCAN1: CAN controller 1 power/clock enable
00139 #define LPC1768_PCONP_PCCAN1        0x2000
00140 // bit 14: PCCAN2: CAN controller 2 power/clock enable
00141 #define LPC1768_PCONP_PCCAN2        0x4000
00142 // bit 15: PCGPIO: GPIOs power/clock enable
00143 #define LPC1768_PCONP_PCGPIO        0x8000
00144 // bit 16: PCRIT: Repetitive interrupt timer power/clock enable
00145 #define LPC1768_PCONP_PCRIT         0x10000
00146 // bit 17: PCMCPWM: Motor control PWM power/clock enable
00147 #define LPC1768_PCONP_PCMCPWM       0x20000
00148 // bit 18: PCQEI: Quadrature encoder interface power/clock enable
00149 #define LPC1768_PCONP_PCQEI         0x40000
00150 // bit 19: PCI2C1: I2C interface 1 power/clock enable
00151 #define LPC1768_PCONP_PCI2C1        0x80000
00152 // bit 20: Reserved
00153 // bit 21: PCSSP0: SSP interface 0 power/clock enable
00154 #define LPC1768_PCONP_PCSSP0        0x200000
00155 // bit 22: PCTIM2: Timer 2 power/clock enable
00156 #define LPC1768_PCONP_PCTIM2        0x400000
00157 // bit 23: PCTIM3: Timer 3 power/clock enable
00158 #define LPC1768_PCONP_PCQTIM3       0x800000
00159 // bit 24: PCUART2: UART 2 power/clock enable
00160 #define LPC1768_PCONP_PCUART2       0x1000000
00161 // bit 25: PCUART3: UART 3 power/clock enable
00162 #define LPC1768_PCONP_PCUART3       0x2000000
00163 // bit 26: PCI2C2: I2C interface 2 power/clock enable
00164 #define LPC1768_PCONP_PCI2C2        0x4000000
00165 // bit 27: PCI2S: I2S interface power/clock enable
00166 #define LPC1768_PCONP_PCI2S         0x8000000
00167 // bit 28: Reserved
00168 // bit 29: PCGPDMA: GP DMA function power/clock enable
00169 #define LPC1768_PCONP_PCGPDMA       0x20000000
00170 // bit 30: PCENET: Ethernet block power/clock enable
00171 #define LPC1768_PCONP_PCENET        0x40000000
00172 // bit 31: PCUSB: USB interface power/clock enable
00173 #define LPC1768_PCONP_PCUSB         0x80000000
00174 
00175 //Powers Up specified Peripheral(s)
00176 inline unsigned int Peripheral_PowerUp(unsigned int bitMask)
00177 {
00178     return LPC_SC->PCONP |= bitMask;
00179 }   
00180 
00181 //Powers Down specified Peripheral(s) 
00182 inline unsigned int Peripheral_PowerDown(unsigned int bitMask)
00183 {
00184     return LPC_SC->PCONP &= ~bitMask;
00185 }
00186 
00187 //returns if the peripheral is on or off
00188 inline bool Peripheral_GetStatus(unsigned int peripheral)
00189 {
00190     return (LPC_SC->PCONP & peripheral) ? true : false;
00191 }
00192 
00193 #endif