Petter Bellander / Mbed 2 deprecated Saab-BT

Simulated the CD changer of a Saab to implement a bluetooth connection to the car stereo. Control of playback device (phone) with steering wheel buttons. Needs a RN52 bluetooth transciever and a CAN transiever. So far only audio playback and control via steering wheel buttons implemented. Hands free calling planned.

Dependencies:   mbed

PowerControl/PowerControl.h@11:74844f6ca8cf, 2016-01-28 (annotated)

Committer:
petter
Date:
Thu Jan 28 21:22:08 2016 +0000
Revision:
11:74844f6ca8cf
Added power saving, added RN52 timeout.; Added errors in display and track metadata

Who changed what in which revision?

UserRevisionLine numberNew contents of line
petter 11:74844f6ca8cf 1 /* mbed PowerControl Library
petter 11:74844f6ca8cf 2 * Copyright (c) 2010 Michael Wei
petter 11:74844f6ca8cf 3 */
petter 11:74844f6ca8cf 4
petter 11:74844f6ca8cf 5 #ifndef MBED_POWERCONTROL_H
petter 11:74844f6ca8cf 6 #define MBED_POWERCONTROL_H
petter 11:74844f6ca8cf 7
petter 11:74844f6ca8cf 8 //shouldn't have to include, but fixes weird problems with defines
petter 11:74844f6ca8cf 9 #include "mbed.h"
petter 11:74844f6ca8cf 10
petter 11:74844f6ca8cf 11 //System Control Register
petter 11:74844f6ca8cf 12 // bit 0: Reserved
petter 11:74844f6ca8cf 13 // bit 1: Sleep on Exit
petter 11:74844f6ca8cf 14 #define LPC1768_SCR_SLEEPONEXIT 0x2
petter 11:74844f6ca8cf 15 // bit 2: Deep Sleep
petter 11:74844f6ca8cf 16 #define LPC1768_SCR_SLEEPDEEP 0x4
petter 11:74844f6ca8cf 17 // bit 3: Resereved
petter 11:74844f6ca8cf 18 // bit 4: Send on Pending
petter 11:74844f6ca8cf 19 #define LPC1768_SCR_SEVONPEND 0x10
petter 11:74844f6ca8cf 20 // bit 5-31: Reserved
petter 11:74844f6ca8cf 21
petter 11:74844f6ca8cf 22 //Power Control Register
petter 11:74844f6ca8cf 23 // bit 0: Power mode control bit 0 (power-down mode)
petter 11:74844f6ca8cf 24 #define LPC1768_PCON_PM0 0x1
petter 11:74844f6ca8cf 25 // bit 1: Power mode control bit 1 (deep power-down mode)
petter 11:74844f6ca8cf 26 #define LPC1768_PCON_PM1 0x2
petter 11:74844f6ca8cf 27 // bit 2: Brown-out reduced power mode
petter 11:74844f6ca8cf 28 #define LPC1768_PCON_BODRPM 0x4
petter 11:74844f6ca8cf 29 // bit 3: Brown-out global disable
petter 11:74844f6ca8cf 30 #define LPC1768_PCON_BOGD 0x8
petter 11:74844f6ca8cf 31 // bit 4: Brown-out reset disable
petter 11:74844f6ca8cf 32 #define LPC1768_PCON_BORD 0x10
petter 11:74844f6ca8cf 33 // bit 5-7 : Reserved
petter 11:74844f6ca8cf 34 // bit 8: Sleep Mode Entry Flag
petter 11:74844f6ca8cf 35 #define LPC1768_PCON_SMFLAG 0x100
petter 11:74844f6ca8cf 36 // bit 9: Deep Sleep Entry Flag
petter 11:74844f6ca8cf 37 #define LPC1768_PCON_DSFLAG 0x200
petter 11:74844f6ca8cf 38 // bit 10: Power Down Entry Flag
petter 11:74844f6ca8cf 39 #define LPC1768_PCON_PDFLAG 0x400
petter 11:74844f6ca8cf 40 // bit 11: Deep Power Down Entry Flag
petter 11:74844f6ca8cf 41 #define LPC1768_PCON_DPDFLAG 0x800
petter 11:74844f6ca8cf 42 // bit 12-31: Reserved
petter 11:74844f6ca8cf 43
petter 11:74844f6ca8cf 44 //"Sleep Mode" (WFI).
petter 11:74844f6ca8cf 45 inline void Sleep(void)
petter 11:74844f6ca8cf 46 {
petter 11:74844f6ca8cf 47 __WFI();
petter 11:74844f6ca8cf 48 }
petter 11:74844f6ca8cf 49
petter 11:74844f6ca8cf 50 //"Deep Sleep" Mode
petter 11:74844f6ca8cf 51 inline void DeepSleep(void)
petter 11:74844f6ca8cf 52 {
petter 11:74844f6ca8cf 53 SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
petter 11:74844f6ca8cf 54 __WFI();
petter 11:74844f6ca8cf 55 }
petter 11:74844f6ca8cf 56
petter 11:74844f6ca8cf 57 //"Power-Down" Mode
petter 11:74844f6ca8cf 58 inline void PowerDown(void)
petter 11:74844f6ca8cf 59 {
petter 11:74844f6ca8cf 60 SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
petter 11:74844f6ca8cf 61 LPC_SC->PCON &= ~LPC1768_PCON_PM1;
petter 11:74844f6ca8cf 62 LPC_SC->PCON |= LPC1768_PCON_PM0;
petter 11:74844f6ca8cf 63 __WFI();
petter 11:74844f6ca8cf 64 //reset back to normal
petter 11:74844f6ca8cf 65 LPC_SC->PCON &= ~(LPC1768_PCON_PM1 | LPC1768_PCON_PM0);
petter 11:74844f6ca8cf 66 }
petter 11:74844f6ca8cf 67
petter 11:74844f6ca8cf 68 //"Deep Power-Down" Mode
petter 11:74844f6ca8cf 69 inline void DeepPowerDown(void)
petter 11:74844f6ca8cf 70 {
petter 11:74844f6ca8cf 71 SCB->SCR |= LPC1768_SCR_SLEEPDEEP;
petter 11:74844f6ca8cf 72 LPC_SC->PCON |= LPC1768_PCON_PM1 | LPC1768_PCON_PM0;
petter 11:74844f6ca8cf 73 __WFI();
petter 11:74844f6ca8cf 74 //reset back to normal
petter 11:74844f6ca8cf 75 LPC_SC->PCON &= ~(LPC1768_PCON_PM1 | LPC1768_PCON_PM0);
petter 11:74844f6ca8cf 76 }
petter 11:74844f6ca8cf 77
petter 11:74844f6ca8cf 78 //shut down BOD during power-down/deep sleep
petter 11:74844f6ca8cf 79 inline void BrownOut_ReducedPowerMode_Enable(void)
petter 11:74844f6ca8cf 80 {
petter 11:74844f6ca8cf 81 LPC_SC->PCON |= LPC1768_PCON_BODRPM;
petter 11:74844f6ca8cf 82 }
petter 11:74844f6ca8cf 83
petter 11:74844f6ca8cf 84 //turn on BOD during power-down/deep sleep
petter 11:74844f6ca8cf 85 inline void BrownOut_ReducedPowerMode_Disable(void)
petter 11:74844f6ca8cf 86 {
petter 11:74844f6ca8cf 87 LPC_SC->PCON &= ~LPC1768_PCON_BODRPM;
petter 11:74844f6ca8cf 88 }
petter 11:74844f6ca8cf 89
petter 11:74844f6ca8cf 90 //turn off brown out circutry
petter 11:74844f6ca8cf 91 inline void BrownOut_Global_Disable(void)
petter 11:74844f6ca8cf 92 {
petter 11:74844f6ca8cf 93 LPC_SC->PCON |= LPC1768_PCON_BOGD;
petter 11:74844f6ca8cf 94 }
petter 11:74844f6ca8cf 95
petter 11:74844f6ca8cf 96 //turn on brown out circutry
petter 11:74844f6ca8cf 97 inline void BrownOut_Global_Enable(void)
petter 11:74844f6ca8cf 98 {
petter 11:74844f6ca8cf 99 LPC_SC->PCON &= !LPC1768_PCON_BOGD;
petter 11:74844f6ca8cf 100 }
petter 11:74844f6ca8cf 101
petter 11:74844f6ca8cf 102 //turn off brown out reset circutry
petter 11:74844f6ca8cf 103 inline void BrownOut_Reset_Disable(void)
petter 11:74844f6ca8cf 104 {
petter 11:74844f6ca8cf 105 LPC_SC->PCON |= LPC1768_PCON_BORD;
petter 11:74844f6ca8cf 106 }
petter 11:74844f6ca8cf 107
petter 11:74844f6ca8cf 108 //turn on brown outreset circutry
petter 11:74844f6ca8cf 109 inline void BrownOut_Reset_Enable(void)
petter 11:74844f6ca8cf 110 {
petter 11:74844f6ca8cf 111 LPC_SC->PCON &= ~LPC1768_PCON_BORD;
petter 11:74844f6ca8cf 112 }
petter 11:74844f6ca8cf 113 //Peripheral Control Register
petter 11:74844f6ca8cf 114 // bit 0: Reserved
petter 11:74844f6ca8cf 115 // bit 1: PCTIM0: Timer/Counter 0 power/clock enable
petter 11:74844f6ca8cf 116 #define LPC1768_PCONP_PCTIM0 0x2
petter 11:74844f6ca8cf 117 // bit 2: PCTIM1: Timer/Counter 1 power/clock enable
petter 11:74844f6ca8cf 118 #define LPC1768_PCONP_PCTIM1 0x4
petter 11:74844f6ca8cf 119 // bit 3: PCUART0: UART 0 power/clock enable
petter 11:74844f6ca8cf 120 #define LPC1768_PCONP_PCUART0 0x8
petter 11:74844f6ca8cf 121 // bit 4: PCUART1: UART 1 power/clock enable
petter 11:74844f6ca8cf 122 #define LPC1768_PCONP_PCUART1 0x10
petter 11:74844f6ca8cf 123 // bit 5: Reserved
petter 11:74844f6ca8cf 124 // bit 6: PCPWM1: PWM 1 power/clock enable
petter 11:74844f6ca8cf 125 #define LPC1768_PCONP_PCPWM1 0x40
petter 11:74844f6ca8cf 126 // bit 7: PCI2C0: I2C interface 0 power/clock enable
petter 11:74844f6ca8cf 127 #define LPC1768_PCONP_PCI2C0 0x80
petter 11:74844f6ca8cf 128 // bit 8: PCSPI: SPI interface power/clock enable
petter 11:74844f6ca8cf 129 #define LPC1768_PCONP_PCSPI 0x100
petter 11:74844f6ca8cf 130 // bit 9: PCRTC: RTC power/clock enable
petter 11:74844f6ca8cf 131 #define LPC1768_PCONP_PCRTC 0x200
petter 11:74844f6ca8cf 132 // bit 10: PCSSP1: SSP interface 1 power/clock enable
petter 11:74844f6ca8cf 133 #define LPC1768_PCONP_PCSSP1 0x400
petter 11:74844f6ca8cf 134 // bit 11: Reserved
petter 11:74844f6ca8cf 135 // bit 12: PCADC: A/D converter power/clock enable
petter 11:74844f6ca8cf 136 #define LPC1768_PCONP_PCADC 0x1000
petter 11:74844f6ca8cf 137 // bit 13: PCCAN1: CAN controller 1 power/clock enable
petter 11:74844f6ca8cf 138 #define LPC1768_PCONP_PCCAN1 0x2000
petter 11:74844f6ca8cf 139 // bit 14: PCCAN2: CAN controller 2 power/clock enable
petter 11:74844f6ca8cf 140 #define LPC1768_PCONP_PCCAN2 0x4000
petter 11:74844f6ca8cf 141 // bit 15: PCGPIO: GPIOs power/clock enable
petter 11:74844f6ca8cf 142 #define LPC1768_PCONP_PCGPIO 0x8000
petter 11:74844f6ca8cf 143 // bit 16: PCRIT: Repetitive interrupt timer power/clock enable
petter 11:74844f6ca8cf 144 #define LPC1768_PCONP_PCRIT 0x10000
petter 11:74844f6ca8cf 145 // bit 17: PCMCPWM: Motor control PWM power/clock enable
petter 11:74844f6ca8cf 146 #define LPC1768_PCONP_PCMCPWM 0x20000
petter 11:74844f6ca8cf 147 // bit 18: PCQEI: Quadrature encoder interface power/clock enable
petter 11:74844f6ca8cf 148 #define LPC1768_PCONP_PCQEI 0x40000
petter 11:74844f6ca8cf 149 // bit 19: PCI2C1: I2C interface 1 power/clock enable
petter 11:74844f6ca8cf 150 #define LPC1768_PCONP_PCI2C1 0x80000
petter 11:74844f6ca8cf 151 // bit 20: Reserved
petter 11:74844f6ca8cf 152 // bit 21: PCSSP0: SSP interface 0 power/clock enable
petter 11:74844f6ca8cf 153 #define LPC1768_PCONP_PCSSP0 0x200000
petter 11:74844f6ca8cf 154 // bit 22: PCTIM2: Timer 2 power/clock enable
petter 11:74844f6ca8cf 155 #define LPC1768_PCONP_PCTIM2 0x400000
petter 11:74844f6ca8cf 156 // bit 23: PCTIM3: Timer 3 power/clock enable
petter 11:74844f6ca8cf 157 #define LPC1768_PCONP_PCQTIM3 0x800000
petter 11:74844f6ca8cf 158 // bit 24: PCUART2: UART 2 power/clock enable
petter 11:74844f6ca8cf 159 #define LPC1768_PCONP_PCUART2 0x1000000
petter 11:74844f6ca8cf 160 // bit 25: PCUART3: UART 3 power/clock enable
petter 11:74844f6ca8cf 161 #define LPC1768_PCONP_PCUART3 0x2000000
petter 11:74844f6ca8cf 162 // bit 26: PCI2C2: I2C interface 2 power/clock enable
petter 11:74844f6ca8cf 163 #define LPC1768_PCONP_PCI2C2 0x4000000
petter 11:74844f6ca8cf 164 // bit 27: PCI2S: I2S interface power/clock enable
petter 11:74844f6ca8cf 165 #define LPC1768_PCONP_PCI2S 0x8000000
petter 11:74844f6ca8cf 166 // bit 28: Reserved
petter 11:74844f6ca8cf 167 // bit 29: PCGPDMA: GP DMA function power/clock enable
petter 11:74844f6ca8cf 168 #define LPC1768_PCONP_PCGPDMA 0x20000000
petter 11:74844f6ca8cf 169 // bit 30: PCENET: Ethernet block power/clock enable
petter 11:74844f6ca8cf 170 #define LPC1768_PCONP_PCENET 0x40000000
petter 11:74844f6ca8cf 171 // bit 31: PCUSB: USB interface power/clock enable
petter 11:74844f6ca8cf 172 #define LPC1768_PCONP_PCUSB 0x80000000
petter 11:74844f6ca8cf 173
petter 11:74844f6ca8cf 174 //Powers Up specified Peripheral(s)
petter 11:74844f6ca8cf 175 inline unsigned int Peripheral_PowerUp(unsigned int bitMask)
petter 11:74844f6ca8cf 176 {
petter 11:74844f6ca8cf 177 return LPC_SC->PCONP |= bitMask;
petter 11:74844f6ca8cf 178 }
petter 11:74844f6ca8cf 179
petter 11:74844f6ca8cf 180 //Powers Down specified Peripheral(s)
petter 11:74844f6ca8cf 181 inline unsigned int Peripheral_PowerDown(unsigned int bitMask)
petter 11:74844f6ca8cf 182 {
petter 11:74844f6ca8cf 183 return LPC_SC->PCONP &= ~bitMask;
petter 11:74844f6ca8cf 184 }
petter 11:74844f6ca8cf 185
petter 11:74844f6ca8cf 186 //returns if the peripheral is on or off
petter 11:74844f6ca8cf 187 inline bool Peripheral_GetStatus(unsigned int peripheral)
petter 11:74844f6ca8cf 188 {
petter 11:74844f6ca8cf 189 return (LPC_SC->PCONP & peripheral) ? true : false;
petter 11:74844f6ca8cf 190 }
petter 11:74844f6ca8cf 191
petter 11:74844f6ca8cf 192
petter 11:74844f6ca8cf 193 // Function to power down magic USB interface chip with new firmware
petter 11:74844f6ca8cf 194 #define USR_POWERDOWN (0x104)
petter 11:74844f6ca8cf 195 inline int semihost_powerdown()
petter 11:74844f6ca8cf 196 {
petter 11:74844f6ca8cf 197 uint32_t arg;
petter 11:74844f6ca8cf 198 return __semihost(USR_POWERDOWN, &arg);
petter 11:74844f6ca8cf 199 }
petter 11:74844f6ca8cf 200
petter 11:74844f6ca8cf 201 #endif