//#define USE_LDEBUG_PRINTF 1\r
#include "debug.h"\r
\r
+#if defined(CFG_MPC5668) || defined(CFG_MPC5516)\r
+#define CFG_MCU_SUPPORT_SLEEP_MODE\r
+#endif\r
+\r
+\r
#define SYSCLOCK_SELECT_PLL 0x2\r
\r
#if defined(CFG_MPC5567)\r
\r
//-------------------------------------------------------------------\r
\r
-void Mcu_SetMode(const Mcu_ModeType McuMode)\r
+/**\r
+ *\r
+ * Application Notes!\r
+ * - AN3584, "MPC5510 Family Low Power Features"\r
+ * Since it's not complete also check MPC5668\r
+ * - AN4150 , "Using Sleep Mode on the MPC5668x" and it's code\r
+ *\r
+ *\r
+ * @param LPM\r
+ */\r
+static void enterLowPower (Mcu_ModeType mcuMode )\r
+{\r
+#if defined(CFG_MCU_SUPPORT_SLEEP_MODE)\r
+\r
+#if defined(CFG_MPC5668)\r
+ uint32 timeout;\r
+ /* Set the sleep bit; following a WAIT instruction, the device will go to sleep */\r
+ CRP.PSCR.B.SLEEP = 1;\r
+\r
+ /* 0x1 32k, 0x2 64k, 0x3 128k -- RAMs maintain power */\r
+ CRP.PSCR.B.RAMSEL = 0x3; // Keep all 128K\r
+\r
+ CRP.Z6VEC.R = (uint32)&McuE_LowPowerRecoverFlash;\r
+#if defined(CFG_VLE)\r
+ CRP.Z6VEC.VLE = 1;\r
+#endif\r
+\r
+ /* If we "Mcu_Wakeup()" is located in RAM, set FASTREC */\r
+ CRP.RECPTR.B.FASTREC = 0;\r
+\r
+ /* Halt everything */\r
+ SIU.HLT0.R = 0x037FFF3D;\r
+ SIU.HLT1.R = 0x18000F3C;\r
+ while((SIU.HLTACK0.R != 0x037FFF3D) && (SIU.HLTACK1.R != 0x18000F3C) && (timeout<3000)){}\r
+\r
+ /* put Z0 in reset if not used for wakeup */\r
+ CRP.Z0VEC.B.Z0RST = 1;\r
+\r
+ // TODO: Enable_all_internal_pull_devices (PULL_DOWN);\r
+\r
+ /* Save context and execute wait instruction.\r
+ *\r
+ * Things that matter here are\r
+ * - Z1VEC, determines where TLB0 will point. TLB0 is written with a\r
+ * value at startup that 4K aligned to this address.\r
+ * - LowPower_Sleep() will save a interrupt context so we will return\r
+ * intact.\r
+ * - For devices with little RAM we don't want to impose the alignment\r
+ * requirements there. Almost as we have to occupy a 4K block for this..\r
+ * although the code does not take that much space.\r
+ * */\r
+ McuE_EnterLowPower(mcuMode);\r
+\r
+ /* Clear sleep flags to allow pads to operate */\r
+ CRP.PSCR.B.SLEEPF = 0x1;\r
+\r
+#elif defined(CFG_MPC5516)\r
+ uint32 timeout;\r
+ /* Set the sleep bit; following a WAIT instruction, the device will go to sleep */\r
+ CRP.PSCR.B.SLEEP = 1;\r
+ /* enable the 1.2V internal regulator when in sleep mode only */\r
+ CRP.PSCR.B.STOP12EN = 1;\r
+ /* 0x1 8k, 0x2 16k, 0x3 32k, 0x6 64k -- RAMs maintain power */\r
+ CRP.PSCR.B.RAMSEL = 0x7; // Keep all 80K\r
+\r
+ CRP.Z1VEC.R = (uint32)&McuE_LowPowerRecoverFlash;\r
+#if defined(CFG_VLE)\r
+ CRP.VLE = 1;\r
+#endif\r
+\r
+ /* If we "Mcu_Wakeup()" is located in RAM, set FASTREC */\r
+ CRP.RECPRTR.B.FASTREC = 0;\r
+\r
+ /* Halt everything */\r
+ SIU.HLT.R = 0x3FFFFFFF;\r
+ while((SIU.HLTACK.R != 0x3FFFFFFF) && (timeout<3000)) {}\r
+\r
+ /* put Z0 in reset if not used for wakeup */\r
+ CRP.Z0VEC.B.Z0RST = 1;\r
+\r
+ // TODO: Enable_all_internal_pull_devices (PULL_DOWN);\r
+\r
+ /* Save context and execute wait instruction.\r
+ *\r
+ * Things that matter here are\r
+ * - Z1VEC, determines where TLB0 will point. TLB0 is written with a\r
+ * value at startup that 4K aligned to this address.\r
+ * - LowPower_Sleep() will save a interrupt context so we will return\r
+ * intact.\r
+ * - For devices with little RAM we don't want to impose the alignment\r
+ * requirements there. Almost as we have to occupy a 4K block for this..\r
+ * although the code does not take that much space.\r
+ * */\r
+ McuE_EnterLowPower(mcuMode);\r
+\r
+ /* Clear sleep flags to allow pads to operate */\r
+ CRP.PSCR.B.SLEEPF = 0x1;\r
+#else\r
+ /* NOT SUPPORTED */\r
+ (void) McuMode;\r
+#endif\r
+#endif\r
+}\r
+\r
+\r
+\r
+void Mcu_SetMode( Mcu_ModeType mcuMode)\r
{\r
+\r
VALIDATE( ( 1 == Mcu_Global.initRun ), MCU_SETMODE_SERVICE_ID, MCU_E_UNINIT );\r
// VALIDATE( ( McuMode <= Mcu_Global.config->McuNumberOfMcuModes ), MCU_SETMODE_SERVICE_ID, MCU_E_PARAM_MODE );\r
- (void) McuMode;\r
+#if defined(CFG_MCU_SUPPORT_SLEEP_MODE)\r
+\r
+#if defined(CFG_MPC5516) || defined(CFG_MPC5668)\r
+ if( MCU_MODE_RUN == mcuMode ) {\r
+\r
+ } else if( MCU_MODE_SLEEP == mcuMode ) {\r
+ /*\r
+ * Follows the AN3548 from Freescale\r
+ *\r
+ */\r
+#if defined(USE_DMA)\r
+ Dma_StopAll();\r
+#endif\r
+\r
+\r
+ /* Set system clock to 16Mhz IRC */\r
+ SIU.SYSCLK.B.SYSCLKSEL = 0;\r
+\r
+ /* Put flash in low-power mode */\r
+ // TODO\r
+\r
+ /* Put QQADC in low-power mode */\r
+ // TODO\r
+\r
+ /* Set us in SLEEP mode */\r
+ CRP.PSCR.B.SLEEP = 1;\r
\r
+\r
+ enterLowPower(mcuMode);\r
+ }\r
+#else\r
/* NOT SUPPORTED */\r
+ (void) McuMode;\r
+#endif\r
+#endif\r
}\r
\r
//-------------------------------------------------------------------\r
projects / arc.git / blobdiff