AMiRo-OS

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

* \file         Demo\ARMCM4_STM32_Olimex_STM32E407_GCC\Boot\main.c

* \brief        Bootloader application source file.

* \ingroup      Boot_ARMCM4_STM32_Olimex_STM32E407_GCC

* \internal

*----------------------------------------------------------------------------------------

*                          C O P Y R I G H T

*----------------------------------------------------------------------------------------

*   Copyright (c) 2013  by Feaser    http://www.feaser.com    All rights reserved

*

*----------------------------------------------------------------------------------------

*                            L I C E N S E

*----------------------------------------------------------------------------------------

* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or

* modify it under the terms of the GNU General Public License as published by the Free

* Software Foundation, either version 3 of the License, or (at your option) any later

* version.

*

* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;

* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR

* PURPOSE. See the GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License along with OpenBLT.

* If not, see <http://www.gnu.org/licenses/>.

*

* A special exception to the GPL is included to allow you to distribute a combined work

* that includes OpenBLT without being obliged to provide the source code for any

* proprietary components. The exception text is included at the bottom of the license

* file <license.html>.

*

* \endinternal

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

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

* Include files

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

#include "boot.h"                                /* bootloader generic header          */

#include "com.h"

#include "ARMCM4_STM32/types.h"

#include "AMiRo/amiroblt.h"

#include "helper.h"

#include "iodef.h"

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

* Defines

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

#define HIBERNATE_TIME_MS       5000

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

* Function prototypes and static variables

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

static void Init(void);

static void initGpio(void);

static void initExti(void);

void configGpioForShutdown(void);

void systemPowerDown(void);

ErrorStatus handleColdReset(void);

ErrorStatus handleSoftwareReset(void);

ErrorStatus handleUartDnWakeup(void);

ErrorStatus handlePathDcWakeup(void);

ErrorStatus handleTouchWakeup(void);

ErrorStatus handleIwdgWakeup(void);

static void indicateHibernate(void);

static void AdcSingleMeasurement(void);

ADC_TypeDef* setupADC(ADC_TypeDef* adc, const uint16_t low_th, const uint16_t high_th);

uint16_t configIwdg(const uint16_t ms);

ErrorStatus shutdownDisambiguationProcedure(const uint8_t type);

void shutdownToTransportation(void);

void shutdownToDeepsleep(void);

void shutdownToHibernate(void);

void shutdownAndRestart(void);

volatile blBackupRegister_t backup_reg;

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

* Callback configuration

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

void blCallbackShutdownTransportation(void);

void blCallbackShutdownDeepsleep(void);

void blCallbackShutdownHibernate(void);

void blCallbackShutdownRestart(void);

void blCallbackHandleShutdownRequest(void);

const blCallbackTable_t cbtable __attribute__ ((section ("_callback_table"))) = {

  .magicNumber = BL_MAGIC_NUMBER,

  .vBootloader = {BL_VERSION_ID_AMiRoBLT_Release, BL_VERSION_MAJOR, BL_VERSION_MINOR, 0},

  .vSSSP = {BL_VERSION_ID_SSSP, BL_SSSP_VERSION_MAJOR, BL_SSSP_VERSION_MINOR, 0},

  .vCompiler = {BL_VERSION_ID_GCC, __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__},  // currently only GCC is supported

  .cbShutdownHibernate = blCallbackShutdownHibernate,

  .cbShutdownDeepsleep = blCallbackShutdownDeepsleep,

  .cbShutdownTransportation = blCallbackShutdownTransportation,

  .cbShutdownRestart = blCallbackShutdownRestart,

  .cbHandleShutdownRequest = blCallbackHandleShutdownRequest,

  .cb5 = (void*)0,

  .cb6 = (void*)0,

  .cb7 = (void*)0,

  .cb8 = (void*)0,

  .cb9 = (void*)0,

  .cb10 = (void*)0,

  .cb11 = (void*)0

};

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

** \brief     This is the entry point for the bootloader application and is called

**            by the reset interrupt vector after the C-startup routines executed.

** \return    none.

**

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

void main(void)

{

  /* initialize the microcontroller */

  Init();

  /* activate some required clocks */

  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB | RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD, ENABLE);

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);

  /* initialize GPIOs and EXTI lines */

  initGpio();

  setLed(BLT_TRUE);

  initExti();

  /* initialize the timer */

  TimerInit(); // do not use saTimerInit() in order to initialize the static variable.

  /* read the backup register */

  backup_reg.raw = RTC_ReadBackupRegister(BL_RTC_BACKUP_REG);

  /* detect the primary reason for this wakeup/restart */

  backup_reg.wakeup_pri_reason =

      ((RCC_GetFlagStatus(RCC_FLAG_LPWRRST) == SET) ? BL_WAKEUP_PRI_RSN_LPWRRST : 0) |

      ((RCC_GetFlagStatus(RCC_FLAG_WWDGRST) == SET) ? BL_WAKEUP_PRI_RSN_WWDGRST : 0) |

      ((RCC_GetFlagStatus(RCC_FLAG_IWDGRST) == SET) ? BL_WAKEUP_PRI_RSN_IWDGRST : 0) |

      ((RCC_GetFlagStatus(RCC_FLAG_SFTRST) == SET) ? BL_WAKEUP_PRI_RSN_SFTRST : 0)   |

      ((RCC_GetFlagStatus(RCC_FLAG_PORRST) == SET) ? BL_WAKEUP_PRI_RSN_PORRST : 0)   |

      ((RCC_GetFlagStatus(RCC_FLAG_PINRST) == SET) ? BL_WAKEUP_PRI_RSN_PINRST : 0)   |

      ((RCC_GetFlagStatus(RCC_FLAG_BORRST) == SET) ? BL_WAKEUP_PRI_RSN_BORRST : 0)   |

      ((PWR_GetFlagStatus(PWR_FLAG_WU) == SET) ? BL_WAKEUP_PRI_RSN_WKUP : 0);

  /* when woken from standby mode, detect the secondary reason for this wakeup/reset */

  if ( (backup_reg.wakeup_pri_reason & BL_WAKEUP_PRI_RSN_WKUP) && (PWR_GetFlagStatus(PWR_FLAG_SB) == SET) ) {

    if (GPIO_ReadInputDataBit(SYS_UART_DN_GPIO, SYS_UART_DN_PIN) == Bit_RESET) {

      backup_reg.wakeup_sec_reason = BL_WAKEUP_SEC_RSN_UART;

    } else if (GPIO_ReadInputDataBit(PATH_DC_GPIO, PATH_DC_PIN) == Bit_SET) {

      backup_reg.wakeup_sec_reason = BL_WAKEUP_SEC_RSN_PWRPLUG;

    } else {

      backup_reg.wakeup_sec_reason = BL_WAKEUP_SEC_RSN_TOUCH;

    }

  } else {

    backup_reg.wakeup_sec_reason = BL_WAKEUP_SEC_RSN_UNKNOWN;

  }

  /* store the information about this wakeup/restart in the backup register */

  PWR_BackupAccessCmd(ENABLE);

  RTC_WriteBackupRegister(BL_RTC_BACKUP_REG, backup_reg.raw);

  /* clear the flags */

  RCC_ClearFlag();

  PWR_ClearFlag(PWR_FLAG_WU);

  setLed(BLT_FALSE);

  /*

   * Measure the current voltage of VSYS and enable the chargers if it was found to be > 9V.

   */

  AdcSingleMeasurement();

  if ( (((float)(ADC_GetConversionValue(ADC1)) / (float)0x0FFF) * 3.3f * 5.33f) > 9.0f ) {

    /* VSYS was found to be > 9V */

    setLed(BLT_TRUE);

    GPIO_ResetBits(CHARGE_EN1_N_GPIO, CHARGE_EN1_N_PIN);

    GPIO_ResetBits(CHARGE_EN2_N_GPIO, CHARGE_EN2_N_PIN);

  }

  /* handle different wakeup/reset reasons */

  ErrorStatus status = ERROR;

  if (backup_reg.wakeup_pri_reason & BL_WAKEUP_PRI_RSN_SFTRST) {

    /* system was reset by software */

    status = handleSoftwareReset();

  } else if (backup_reg.wakeup_pri_reason & BL_WAKEUP_PRI_RSN_WKUP) {

    /* system was woken via WKUP pin */

    /* differeciate between thre wakeup types */

    switch (backup_reg.wakeup_sec_reason) {

      case BL_WAKEUP_SEC_RSN_UART:

        status = handleUartDnWakeup();

        break;

      case BL_WAKEUP_SEC_RSN_PWRPLUG:

        status = handlePathDcWakeup();

        break;

      case BL_WAKEUP_SEC_RSN_TOUCH:

        status = handleTouchWakeup();

        break;

      default:

        status = ERROR;

        break;

    }

  } else if (backup_reg.wakeup_pri_reason & BL_WAKEUP_PRI_RSN_IWDGRST) {

    /* system was woken by IWDG */

    status = handleIwdgWakeup();

  } else if (backup_reg.wakeup_pri_reason == BL_WAKEUP_PRI_RSN_PINRST) {

    /* system was reset via NRST pin */

    status = handleColdReset();

  } else {

    /* system was woken/reset for an unexpected reason.

     * In this case the LED blinks "SOS" (... --- ...) and the system resets.

     */

    blinkSOS(1);

    status = ERROR;

    backup_reg.shutdown_pri_reason = BL_SHUTDOWN_PRI_RSN_RESTART;

    backup_reg.shutdown_sec_reason = BL_SHUTDOWN_SEC_RSN_UNKNOWN;

    RTC_WriteBackupRegister(BL_RTC_BACKUP_REG, backup_reg.raw);

    NVIC_SystemReset();

  }

  /* if something went wrong, signal this failure */

  if (status != SUCCESS) {

    blinkSOSinf();

  }

  return;