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 //System Control Register
00009 // bit 0: Reserved
00010 // bit 1: Sleep on Exit
00011 #define LPC1768_SCR_SLEEPONEXIT     0x2
00012 // bit 2: Deep Sleep
00013 #define LPC1768_SCR_SLEEPDEEP       0x4
00014 // bit 3: Resereved
00015 // bit 4: Send on Pending
00016 #define LPC1768_SCR_SEVONPEND        0x10
00017 // bit 5-31: Reserved
00018 
00019 //Power Control Register
00020 // bit 0: Power mode control bit 0 (power-down mode)
00021 #define LPC1768_PCON_PM0            0x1
00022 // bit 1: Power mode control bit 1 (deep power-down mode)
00023 #define LPC1768_PCON_PM1            0x2
00024 // bit 2: Brown-out reduced power mode
00025 #define LPC1768_PCON_BODRPM         0x4
00026 // bit 3: Brown-out global disable
00027 #define LPC1768_PCON_BOGD           0x8
00028 // bit 4: Brown-out reset disable
00029 #define LPC1768_PCON_BORD           0x10
00030 // bit 5-7 : Reserved
00031 // bit 8: Sleep Mode Entry Flag
00032 #define LPC1768_PCON_SMFLAG         0x100
00033 // bit 9: Deep Sleep Entry Flag
00034 #define LPC1768_PCON_DSFLAG         0x200
00035 // bit 10: Power Down Entry Flag
00036 #define LPC1768_PCON_PDFLAG         0x400
00037 // bit 11: Deep Power Down Entry Flag
00038 #define LPC1768_PCON_DPDFLAG        0x800
00039 // bit 12-31: Reserved
00040 
00041 //"Sleep Mode" (WFI).
00042 inline void Sleep(void)
00043 {
00044     __WFI();
00045 }
00046 
00047 //"Deep Sleep" Mode
00048 inline void DeepSleep(void)
00049 {
00050    SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
00051    __WFI();
00052 }
00053 
00054 //"Power-Down" Mode
00055 inline void PowerDown(void)
00056 {
00057    SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
00058    LPC_SC->PCON &= ~LPC1768_PCON_PM1;
00059    LPC_SC->PCON |= LPC1768_PCON_PM0;
00060    __WFI();
00061    //reset back to normal
00062   LPC_SC->PCON &= ~(LPC1768_PCON_PM1 | LPC1768_PCON_PM0);
00063 }
00064 
00065 //"Deep Power-Down" Mode
00066 inline void DeepPowerDown(void)
00067 {
00068    SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
00069    LPC_SC->PCON |= LPC1768_PCON_PM1 | LPC1768_PCON_PM0;
00070    __WFI();
00071    //reset back to normal
00072   LPC_SC->PCON &= ~(LPC1768_PCON_PM1 | LPC1768_PCON_PM0);
00073 }
00074 
00075 //shut down BOD during power-down/deep sleep
00076 inline void BrownOut_ReducedPowerMode_Enable(void)
00077 {
00078     LPC_SC->PCON |= LPC1768_PCON_BODRPM;
00079 }
00080 
00081 //turn on BOD during power-down/deep sleep
00082 inline void BrownOut_ReducedPowerMode_Disable(void)
00083 {
00084     LPC_SC->PCON &= ~LPC1768_PCON_BODRPM;
00085 }
00086 
00087 //turn off brown out circutry
00088 inline void BrownOut_Global_Disable(void)
00089 {
00090     LPC_SC->PCON |= LPC1768_PCON_BOGD;
00091 }
00092 
00093 //turn on brown out circutry
00094 inline void BrownOut_Global_Enable(void)
00095 {
00096     LPC_SC->PCON &= !LPC1768_PCON_BOGD;
00097 }
00098 
00099 //turn off brown out reset circutry
00100 inline void BrownOut_Reset_Disable(void)
00101 {
00102     LPC_SC->PCON |= LPC1768_PCON_BORD;
00103 }
00104 
00105 //turn on brown outreset  circutry
00106 inline void BrownOut_Reset_Enable(void)
00107 {
00108     LPC_SC->PCON &= ~LPC1768_PCON_BORD;
00109 }
00110 //Peripheral Control Register
00111 // bit 0: Reserved
00112 // bit 1: PCTIM0: Timer/Counter 0 power/clock enable
00113 #define LPC1768_PCONP_PCTIM0        0x2
00114 // bit 2: PCTIM1: Timer/Counter 1 power/clock enable
00115 #define LPC1768_PCONP_PCTIM1        0x4
00116 // bit 3: PCUART0: UART 0 power/clock enable
00117 #define LPC1768_PCONP_PCUART0       0x8
00118 // bit 4: PCUART1: UART 1 power/clock enable
00119 #define LPC1768_PCONP_PCUART1       0x10
00120 // bit 5: Reserved
00121 // bit 6: PCPWM1: PWM 1 power/clock enable
00122 #define LPC1768_PCONP_PCPWM1        0x40
00123 // bit 7: PCI2C0: I2C interface 0 power/clock enable
00124 #define LPC1768_PCONP_PCI2C0        0x80
00125 // bit 8: PCSPI: SPI interface power/clock enable
00126 #define LPC1768_PCONP_PCSPI         0x100
00127 // bit 9: PCRTC: RTC power/clock enable
00128 #define LPC1768_PCONP_PCRTC         0x200
00129 // bit 10: PCSSP1: SSP interface 1 power/clock enable
00130 #define LPC1768_PCONP_PCSSP1        0x400
00131 // bit 11: Reserved
00132 // bit 12: PCADC: A/D converter power/clock enable
00133 #define LPC1768_PCONP_PCADC         0x1000
00134 // bit 13: PCCAN1: CAN controller 1 power/clock enable
00135 #define LPC1768_PCONP_PCCAN1        0x2000
00136 // bit 14: PCCAN2: CAN controller 2 power/clock enable
00137 #define LPC1768_PCONP_PCCAN2        0x4000
00138 // bit 15: PCGPIO: GPIOs power/clock enable
00139 #define LPC1768_PCONP_PCGPIO        0x8000
00140 // bit 16: PCRIT: Repetitive interrupt timer power/clock enable
00141 #define LPC1768_PCONP_PCRIT         0x10000
00142 // bit 17: PCMCPWM: Motor control PWM power/clock enable
00143 #define LPC1768_PCONP_PCMCPWM       0x20000
00144 // bit 18: PCQEI: Quadrature encoder interface power/clock enable
00145 #define LPC1768_PCONP_PCQEI         0x40000
00146 // bit 19: PCI2C1: I2C interface 1 power/clock enable
00147 #define LPC1768_PCONP_PCI2C1        0x80000
00148 // bit 20: Reserved
00149 // bit 21: PCSSP0: SSP interface 0 power/clock enable
00150 #define LPC1768_PCONP_PCSSP0        0x200000
00151 // bit 22: PCTIM2: Timer 2 power/clock enable
00152 #define LPC1768_PCONP_PCTIM2        0x400000
00153 // bit 23: PCTIM3: Timer 3 power/clock enable
00154 #define LPC1768_PCONP_PCQTIM3       0x800000
00155 // bit 24: PCUART2: UART 2 power/clock enable
00156 #define LPC1768_PCONP_PCUART2       0x1000000
00157 // bit 25: PCUART3: UART 3 power/clock enable
00158 #define LPC1768_PCONP_PCUART3       0x2000000
00159 // bit 26: PCI2C2: I2C interface 2 power/clock enable
00160 #define LPC1768_PCONP_PCI2C2        0x4000000
00161 // bit 27: PCI2S: I2S interface power/clock enable
00162 #define LPC1768_PCONP_PCI2S         0x8000000
00163 // bit 28: Reserved
00164 // bit 29: PCGPDMA: GP DMA function power/clock enable
00165 #define LPC1768_PCONP_PCGPDMA       0x20000000
00166 // bit 30: PCENET: Ethernet block power/clock enable
00167 #define LPC1768_PCONP_PCENET        0x40000000
00168 // bit 31: PCUSB: USB interface power/clock enable
00169 #define LPC1768_PCONP_PCUSB         0x80000000
00170 
00171 //Powers Up specified Peripheral(s)
00172 inline unsigned int Peripheral_PowerUp(unsigned int bitMask)
00173 {
00174     return LPC_SC->PCONP |= bitMask;
00175 }   
00176 
00177 //Powers Down specified Peripheral(s) 
00178 inline unsigned int Peripheral_PowerDown(unsigned int bitMask)
00179 {
00180     return LPC_SC->PCONP &= ~bitMask;
00181 }
00182 
00183 //returns if the peripheral is on or off
00184 inline bool Peripheral_GetStatus(unsigned int peripheral)
00185 {
00186     return (LPC_SC->PCONP & peripheral) ? true : false;
00187 }
00188 
00189 #endif