platforminit.c

基于MMA7260QR2的跌落检查程序

/************************************************************************************
*
* (c) Copyright 2007, Freescale, Inc.  All rights reserved.
*
*
* No part of this document must be reproduced in any form - including copied,
* transcribed, printed or by any electronic means - without specific written
* permission from Freescale.
*
************************************************************************************/

#include "../../../Interface/PortConfig.h"
#include "../../../Interface/PlatformInit.h"
#include "../../../Interface/EmbeddedTypes.h"
#include "../../../LibInterface/GPIO_Interface.h"
#include "../../../Interface/RF_Config.h"


/* CRM register containing the control of NVM regulator */
#define VregCntl            (*((volatile unsigned long*)(0x80003048)))
#define VREG_1P8V_EN        0x00000080UL
#define BUCK_BYPASS_EN      0x00000004UL
#define BUCK_EN             0x00000001UL



static void PlatformInitGpio(void);

/**************************************************************************************/
void PlatformPortInit(void)
{
  PlatformInitGpio();
}

/**************************************************************************************/
/*
  Activates the NVM regulator via CRM
*/
void StartNvmReg(void)
{
  volatile uint32_t counter;

  VregCntl &= (~BUCK_EN);
  VregCntl |= BUCK_BYPASS_EN;

  counter = 18200;
  while(counter--);

  VregCntl |= VREG_1P8V_EN;
  counter = 5200;
  while(counter--);
}

/**************************************************************************************/
/*
  Stops the NVM regulator via CRM
*/
void StopNvmReg(void)
{
  volatile uint32_t counter;

  VregCntl &= ~VREG_1P8V_EN;
  counter = 5200;
  while(counter--);
}

/**************************************************************************************/

static void PlatformInitGpio(void)
{
  GPIO_REGS_P->DataLo = gDataLoValue_c;                  //MBAR_GPIO + 0x08
  GPIO_REGS_P->DataHi = gDataHiValue_c;                  //MBAR_GPIO + 0x0C

  GPIO_REGS_P->DirLo =  gDirLoValue_c;                   //MBAR_GPIO + 0x00
  GPIO_REGS_P->DirHi =  gDirHiValue_c;                   //MBAR_GPIO + 0x04

  GPIO_REGS_P->PuEnLo = gPuEnLoValue_c;                  //MBAR_GPIO + 0x10
  GPIO_REGS_P->PuEnHi = gPuEnHiValue_c;                  //MBAR_GPIO + 0x14
  GPIO_REGS_P->FuncSel0 = gFuncSel0Value_c;              //MBAR_GPIO + 0x18
  GPIO_REGS_P->FuncSel1 = gFuncSel1Value_c;              //MBAR_GPIO + 0x1C
  GPIO_REGS_P->FuncSel2 = gFuncSel2Value_c;              //MBAR_GPIO + 0x20
  GPIO_REGS_P->FuncSel3 = gFuncSel3Value_c;              //MBAR_GPIO + 0x24
  GPIO_REGS_P->InputDataSelLo = gInputDataSelLoValue_c;  //MBAR_GPIO + 0x28
  GPIO_REGS_P->InputDataSelHi = gInputDataSelHiValue_c;  //MBAR_GPIO + 0x2C
  GPIO_REGS_P->PuSelLo = gPuSelLoValue_c;                //MBAR_GPIO + 0x30
  GPIO_REGS_P->PuSelHi = gPuSelHiValue_c;                //MBAR_GPIO + 0x34
  GPIO_REGS_P->HystEnLo = gHystEnLoValue_c;              //MBAR_GPIO + 0x38
  GPIO_REGS_P->HystEnHi = gHystEnHiValue_c;              //MBAR_GPIO + 0x3C
  GPIO_REGS_P->PuKeepLo = gPuKeepLoValue_c;              //MBAR_GPIO + 0x40
  GPIO_REGS_P->PuKeepHi = gPuKeepHiValue_c;              //MBAR_GPIO + 0x44 
  if(gDualPortRFOperation_c == TRUE)
  {
    Gpio_SetPinFunction(gGpioPin42_c, gGpioAlternate1Mode_c);
    Gpio_SetPinFunction(gGpioPin43_c, gGpioAlternate1Mode_c);
  }
}