amiro-blt / Target / Demo / ARMCM3_STM32F103_LightRing_GCC / Boot / main.c @ 69661903
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/************************************************************************************//** |
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* \file Demo\ARMCM3_STM32_Olimex_STM32P103_GCC\Boot\main.c
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* \brief Bootloader application source file.
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* \ingroup Boot_ARMCM3_STM32_Olimex_STM32P103_GCC
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* \internal
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*----------------------------------------------------------------------------------------
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* C O P Y R I G H T
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*----------------------------------------------------------------------------------------
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* Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
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*
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*----------------------------------------------------------------------------------------
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* L I C E N S E
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*----------------------------------------------------------------------------------------
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* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with OpenBLT.
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* If not, see <http://www.gnu.org/licenses/>.
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*
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* A special exception to the GPL is included to allow you to distribute a combined work
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* that includes OpenBLT without being obliged to provide the source code for any
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* proprietary components. The exception text is included at the bottom of the license
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* file <license.html>.
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*
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* \endinternal
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****************************************************************************************/
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/****************************************************************************************
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* Include files
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****************************************************************************************/
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#include "boot.h" /* bootloader generic header */ |
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#include "stm32f10x.h" /* microcontroller registers */ |
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#include "stm32f10x_conf.h" /* STM32 peripheral drivers */ |
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#include "timer.h" |
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#include "ARMCM3_STM32/types.h" |
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#include "AMiRo/interfaces.h" |
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#include "AMiRo/helper.h" |
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/****************************************************************************************
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* Defines
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****************************************************************************************/
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#define PSEUDO_LED_GPIO GPIOA
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#define PSEUDO_LED_PIN GPIO_Pin_1
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#define LASER_RX_GPIO GPIOA
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#define LASER_RX_PIN GPIO_Pin_2
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#define LASER_TX_GPIO GPIOA
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#define LASER_TX_PIN GPIO_Pin_3
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#define LIGHT_BLANK_GPIO GPIOA
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#define LIGHT_BLANK_PIN GPIO_Pin_4
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#define LIGHT_SCLK_GPIO GPIOA
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#define LIGHT_SCLK_PIN GPIO_Pin_5
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#define LIGHT_MOSI_GPIO GPIOA
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#define LIGHT_MOSI_PIN GPIO_Pin_7
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#define PROG_RX_GPIO GPIOA
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#define PROG_RX_PIN GPIO_Pin_9
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#define PROG_TX_GPIO GPIOA
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#define PROG_TX_PIN GPIO_Pin_10
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#define CAN_RX_GPIO GPIOA
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#define CAN_RX_PIN GPIO_Pin_11
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#define CAN_TX_GPIO GPIOA
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#define CAN_TX_PIN GPIO_Pin_12
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#define SWDIO_GPIO GPIOA
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#define SWDIO_PIN GPIO_Pin_13
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#define SWCLK_GPIO GPIOA
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#define SWCLK_PIN GPIO_Pin_14
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#define LASER_EN_GPIO GPIOB
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#define LASER_EN_PIN GPIO_Pin_2
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#define LASER_OC_N_GPIO GPIOB
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#define LASER_OC_N_PIN GPIO_Pin_5
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#define SYS_UART_DN_GPIO GPIOB
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#define SYS_UART_DN_PIN GPIO_Pin_6
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#define WL_GDO2_GPIO GPIOB
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#define WL_GDO2_PIN GPIO_Pin_8
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#define WL_GDO0_GPIO GPIOB
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#define WL_GDO0_PIN GPIO_Pin_9
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#define MEM_SCL_GPIO GPIOB
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#define MEM_SCL_PIN GPIO_Pin_10
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#define MEM_SDA_GPIO GPIOB
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#define MEM_SDA_PIN GPIO_Pin_11
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#define WL_SS_N_GPIO GPIOB
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#define WL_SS_N_PIN GPIO_Pin_12
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#define WL_SCLK_GPIO GPIOB
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#define WL_SCLK_PIN GPIO_Pin_13
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#define WL_MISO_GPIO GPIOB
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#define WL_MISO_PIN GPIO_Pin_14
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#define WL_MOSI_GPIO GPIOB
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#define WL_MOSI_PIN GPIO_Pin_15
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#define LIGHT_XLAT_GPIO GPIOC
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#define LIGHT_XLAT_PIN GPIO_Pin_4
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#define SYS_UART_RX_GPIO GPIOC
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#define SYS_UART_RX_PIN GPIO_Pin_10
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#define SYS_UART_TX_GPIO GPIOC
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#define SYS_UART_TX_PIN GPIO_Pin_11
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#define SYS_PD_N_GPIO GPIOC
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#define SYS_PD_N_PIN GPIO_Pin_14
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#define OSC_IN_GPIO GPIOD
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#define OSC_IN_PIN GPIO_Pin_0
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#define OSC_OUT_GPIO GPIOD
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#define OSC_OUT_PIN GPIO_Pin_1
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#define SYS_SYNC_N_GPIO GPIOD
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#define SYS_SYNC_N_PIN GPIO_Pin_2
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/****************************************************************************************
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* Function prototypes
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****************************************************************************************/
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static void Init(void); |
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static void initGpio(); |
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static void initExti(); |
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void configGpioForShutdown();
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ErrorStatus handleWarmReset(); |
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ErrorStatus shutdownDisambiguationProcedure(const uint8_t type);
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void shutdownToTransportation(const blt_bool exec_disambiguation); |
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void shutdownToDeepsleep(const blt_bool exec_disambiguation); |
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void shutdownToHibernate(const blt_bool exec_disambiguation); |
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void shutdownAndRestart(const blt_bool exec_disambiguation); |
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volatile BlBackupRegister backup_reg;
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/****************************************************************************************
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* Callback configuration
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****************************************************************************************/
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void blCallbackShutdownTransportation(void); |
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void blCallbackShutdownDeepsleep(void); |
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void blCallbackShutdownHibernate(void); |
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void blCallbackShutdownRestart(void); |
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void blCallbackHandleShutdownRequest(void); |
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const BlCallbackTable cbtable __attribute__ ((section ("_callback_table"))) = { |
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.magicNumber = BL_MAGIC_NUMBER, |
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.versionMajor = BL_VERSION_MAJOR, |
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.versionMinor = BL_VERSION_MINOR, |
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.versionHotfix = 0,
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.cbShutdownHibernate = blCallbackShutdownHibernate, |
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.cbShutdownDeepsleep = blCallbackShutdownDeepsleep, |
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.cbShutdownTransportation = blCallbackShutdownTransportation, |
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.cbShutdownRestart = blCallbackShutdownRestart, |
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.cbHandleShutdownRequest = blCallbackHandleShutdownRequest, |
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.cb5 = (void*)0, |
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.cb6 = (void*)0, |
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.cb7 = (void*)0, |
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.cb8 = (void*)0, |
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.cb9 = (void*)0, |
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.cb10 = (void*)0, |
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.cb11 = (void*)0 |
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}; |
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/************************************************************************************//** |
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** \brief This is the entry point for the bootloader application and is called
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** by the reset interrupt vector after the C-startup routines executed.
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** \return Program return code.
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**
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****************************************************************************************/
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int main(void) |
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{ |
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/* initialize the microcontroller */
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Init(); |
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/* activate some required cocks */
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); |
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE); |
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/* initialize GPIOs and EXTI lines */
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initGpio(); |
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setLed(BLT_TRUE); |
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initExti(); |
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/* initialize the timer */
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TimerInit(); |
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/* detect the primary reason for this wakeup/restart */
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backup_reg.wakeup_pri_reason = |
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((RCC_GetFlagStatus(RCC_FLAG_LPWRRST) == SET) ? BL_WAKEUP_PRI_RSN_LPWRRST : 0) |
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((RCC_GetFlagStatus(RCC_FLAG_WWDGRST) == SET) ? BL_WAKEUP_PRI_RSN_WWDGRST : 0) |
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((RCC_GetFlagStatus(RCC_FLAG_IWDGRST) == SET) ? BL_WAKEUP_PRI_RSN_IWDGRST : 0) |
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((RCC_GetFlagStatus(RCC_FLAG_SFTRST) == SET) ? BL_WAKEUP_PRI_RSN_SFTRST : 0) |
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((RCC_GetFlagStatus(RCC_FLAG_PORRST) == SET) ? BL_WAKEUP_PRI_RSN_PORRST : 0) |
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((RCC_GetFlagStatus(RCC_FLAG_PINRST) == SET) ? BL_WAKEUP_PRI_RSN_PINRST : 0) |
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((PWR_GetFlagStatus(PWR_FLAG_WU) == SET) ? BL_WAKEUP_PRI_RSN_WKUP : 0);
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/* for this module there is no secondary wakeup reason */
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backup_reg.wakeup_sec_reason = BL_WAKEUP_SEC_RSN_UNKNOWN; |
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/* clear the flags */
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RCC_ClearFlag(); |
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PWR_ClearFlag(PWR_FLAG_WU); |
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setLed(BLT_FALSE); |
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/* hanlde different wakeup/reset reasons */
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ErrorStatus status = ERROR; |
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if (backup_reg.wakeup_pri_reason & BL_WAKEUP_PRI_RSN_PINRST) {
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/* system was woken via NRST pin */
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status = handleWarmReset(); |
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} else {
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/* system was woken/reset for an unexpected reason */
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blinkSOS(1);
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status = handleWarmReset(); |
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} |
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/* if something went wrong, signal this failure */
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if (status != SUCCESS) {
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blinkSOSinf(); |
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} |
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return 0; |
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} /*** end of main ***/
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/************************************************************************************//** |
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** \brief Initializes the microcontroller.
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** \return none.
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**
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****************************************************************************************/
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static void Init(void) |
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{ |
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volatile blt_int32u StartUpCounter = 0, HSEStatus = 0; |
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blt_int32u pll_multiplier; |
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#if (BOOT_FILE_LOGGING_ENABLE > 0) && (BOOT_COM_UART_ENABLE == 0) && (BOOT_GATE_UART_ENABLE == 0) |
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GPIO_InitTypeDef GPIO_InitStruct; |
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USART_InitTypeDef USART_InitStruct; |
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#endif
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/* reset the RCC clock configuration to the default reset state (for debug purpose) */
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/* set HSION bit */
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RCC->CR |= (blt_int32u)0x00000001;
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/* reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
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RCC->CFGR &= (blt_int32u)0xF8FF0000;
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/* reset HSEON, CSSON and PLLON bits */
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RCC->CR &= (blt_int32u)0xFEF6FFFF;
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/* reset HSEBYP bit */
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RCC->CR &= (blt_int32u)0xFFFBFFFF;
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/* reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
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RCC->CFGR &= (blt_int32u)0xFF80FFFF;
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/* disable all interrupts and clear pending bits */
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RCC->CIR = 0x009F0000;
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/* enable HSE */
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RCC->CR |= ((blt_int32u)RCC_CR_HSEON); |
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/* wait till HSE is ready and if Time out is reached exit */
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do
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{ |
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HSEStatus = RCC->CR & RCC_CR_HSERDY; |
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StartUpCounter++; |
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} |
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while((HSEStatus == 0) && (StartUpCounter != 1500)); |
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/* check if time out was reached */
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if ((RCC->CR & RCC_CR_HSERDY) == RESET)
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{ |
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/* cannot continue when HSE is not ready */
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ASSERT_RT(BLT_FALSE); |
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} |
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/* enable flash prefetch buffer */
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FLASH->ACR |= FLASH_ACR_PRFTBE; |
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/* reset flash wait state configuration to default 0 wait states */
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FLASH->ACR &= (blt_int32u)((blt_int32u)~FLASH_ACR_LATENCY); |
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#if (BOOT_CPU_SYSTEM_SPEED_KHZ > 48000) |
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/* configure 2 flash wait states */
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FLASH->ACR |= (blt_int32u)FLASH_ACR_LATENCY_2; |
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#elif (BOOT_CPU_SYSTEM_SPEED_KHZ > 24000) |
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/* configure 1 flash wait states */
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FLASH->ACR |= (blt_int32u)FLASH_ACR_LATENCY_1; |
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#endif
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/* HCLK = SYSCLK */
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RCC->CFGR |= (blt_int32u)RCC_CFGR_HPRE_DIV1; |
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/* PCLK2 = HCLK/2 */
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RCC->CFGR |= (blt_int32u)RCC_CFGR_PPRE2_DIV2; |
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/* PCLK1 = HCLK/2 */
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RCC->CFGR |= (blt_int32u)RCC_CFGR_PPRE1_DIV2; |
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/* reset PLL configuration */
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RCC->CFGR &= (blt_int32u)((blt_int32u)~(RCC_CFGR_PLLSRC | RCC_CFGR_PLLXTPRE | \ |
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RCC_CFGR_PLLMULL)); |
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/* assert that the pll_multiplier is between 2 and 16 */
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ASSERT_CT((BOOT_CPU_SYSTEM_SPEED_KHZ/BOOT_CPU_XTAL_SPEED_KHZ) >= 2);
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ASSERT_CT((BOOT_CPU_SYSTEM_SPEED_KHZ/BOOT_CPU_XTAL_SPEED_KHZ) <= 16);
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/* calculate multiplier value */
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pll_multiplier = BOOT_CPU_SYSTEM_SPEED_KHZ/BOOT_CPU_XTAL_SPEED_KHZ; |
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/* convert to register value */
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pll_multiplier = (blt_int32u)((pll_multiplier - 2) << 18); |
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/* set the PLL multiplier and clock source */
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RCC->CFGR |= (blt_int32u)(RCC_CFGR_PLLSRC_HSE | pll_multiplier); |
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/* enable PLL */
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RCC->CR |= RCC_CR_PLLON; |
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/* wait till PLL is ready */
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while((RCC->CR & RCC_CR_PLLRDY) == 0) |
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{ |
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} |
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/* select PLL as system clock source */
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RCC->CFGR &= (blt_int32u)((blt_int32u)~(RCC_CFGR_SW)); |
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RCC->CFGR |= (blt_int32u)RCC_CFGR_SW_PLL; |
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/* wait till PLL is used as system clock source */
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while ((RCC->CFGR & (blt_int32u)RCC_CFGR_SWS) != (blt_int32u)0x08) |
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{ |
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} |
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#if (BOOT_COM_CAN_ENABLE > 0 || BOOT_GATE_CAN_ENABLE > 0) |
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/* enable clocks for CAN transmitter and receiver pins (GPIOB and AFIO) */
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RCC->APB2ENR |= (blt_int32u)(0x00000004 | 0x00000001); |
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/* configure CAN Rx (GPIOA11) as alternate function input */
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/* first reset the configuration */
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GPIOA->CRH &= ~(blt_int32u)((blt_int32u)0xf << 12); |
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/* CNF8[1:0] = %01 and MODE8[1:0] = %00 */
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GPIOA->CRH |= (blt_int32u)((blt_int32u)0x4 << 12); |
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/* configure CAN Tx (GPIOA12) as alternate function push-pull */
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/* first reset the configuration */
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GPIOA->CRH &= ~(blt_int32u)((blt_int32u)0xf << 16); |
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/* CNF9[1:0] = %11 and MODE9[1:0] = %11 */
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GPIOA->CRH |= (blt_int32u)((blt_int32u)0xb << 16); |
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/* remap CAN1 pins to PortA */
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AFIO->MAPR &= ~(blt_int32u)((blt_int32u)0x3 << 13); |
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AFIO->MAPR |= (blt_int32u)((blt_int32u)0x0 << 13); |
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/* enable clocks for CAN controller peripheral */
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RCC->APB1ENR |= (blt_int32u)0x02000000;
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#endif
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#if (BOOT_COM_UART_ENABLE > 0 || BOOT_GATE_UART_ENABLE > 0) |
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/* enable clocks for USART1 peripheral, transmitter and receiver pins (GPIOA and AFIO) */
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RCC->APB2ENR |= (blt_int32u)(0x00004000 | 0x00000004 | 0x00000001); |
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/* configure USART1 Tx (GPIOA9) as alternate function push-pull */
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/* first reset the configuration */
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GPIOA->CRH &= ~(blt_int32u)((blt_int32u)0xf << 4); |
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/* CNF2[1:0] = %10 and MODE2[1:0] = %11 */
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GPIOA->CRH |= (blt_int32u)((blt_int32u)0xb << 4); |
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/* configure USART1 Rx (GPIOA10) as alternate function input floating */
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/* first reset the configuration */
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GPIOA->CRH &= ~(blt_int32u)((blt_int32u)0xf << 8); |
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/* CNF2[1:0] = %01 and MODE2[1:0] = %00 */
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GPIOA->CRH |= (blt_int32u)((blt_int32u)0x4 << 8); |
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#if (BOOT_DEBUGGING_UART2_ENABLE > 0) |
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/* enable clocks for USART2 peripheral */
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RCC->APB1ENR |= (blt_int32u)(0x00020000);
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/* configure USART2 Tx (GPIOA2) as alternate function push-pull */
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/* first reset the configuration */
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GPIOA->CRL &= ~(blt_int32u)((blt_int32u)0xf << 8); |
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/* CNF2[1:0] = %10 and MODE2[1:0] = %11 */
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GPIOA->CRL |= (blt_int32u)((blt_int32u)0xb << 8); |
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/* configure USART2 Rx (GPIOA3) as alternate function input floating */
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/* first reset the configuration */
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GPIOA->CRL &= ~(blt_int32u)((blt_int32u)0xf << 12); |
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/* CNF2[1:0] = %01 and MODE2[1:0] = %00 */
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GPIOA->CRL |= (blt_int32u)((blt_int32u)0x4 << 12); |
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#endif
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#elif (BOOT_FILE_LOGGING_ENABLE > 0) |
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/* enable UART peripheral clock */
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); |
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/* enable GPIO peripheral clock for transmitter and receiver pins */
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE); |
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/* configure USART Tx as alternate function push-pull */
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GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP; |
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GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2; |
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GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; |
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GPIO_Init(GPIOA, &GPIO_InitStruct); |
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/* Configure USART Rx as alternate function input floating */
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GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN_FLOATING; |
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GPIO_InitStruct.GPIO_Pin = GPIO_Pin_3; |
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GPIO_Init(GPIOA, &GPIO_InitStruct); |
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/* configure UART communcation parameters */
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USART_InitStruct.USART_BaudRate = BOOT_COM_UART_BAUDRATE; |
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USART_InitStruct.USART_WordLength = USART_WordLength_8b; |
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USART_InitStruct.USART_StopBits = USART_StopBits_1; |
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USART_InitStruct.USART_Parity = USART_Parity_No; |
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USART_InitStruct.USART_HardwareFlowControl = USART_HardwareFlowControl_None; |
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USART_InitStruct.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; |
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USART_Init(USART2, &USART_InitStruct); |
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/* enable UART */
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USART_Cmd(USART2, ENABLE); |
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#endif
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} /*** end of Init ***/
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/*
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* Initializes all GPIO used by the bootloader
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*/
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static void initGpio() { |
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GPIO_InitTypeDef gpio_init; |
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/*
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* OUTPUTS
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*/
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/* initialize the pseudo LED and push it up (inactive) */
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GPIO_SetBits(PSEUDO_LED_GPIO, PSEUDO_LED_PIN); |
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gpio_init.GPIO_Pin = PSEUDO_LED_PIN; |
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gpio_init.GPIO_Mode = GPIO_Mode_Out_PP; |
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gpio_init.GPIO_Speed = GPIO_Speed_50MHz; |
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GPIO_Init(PSEUDO_LED_GPIO, &gpio_init); |
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/* initialize SYS_PD_N and let it go (inactive) */
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399 |
GPIO_SetBits(SYS_PD_N_GPIO, SYS_PD_N_PIN); |
400 |
gpio_init.GPIO_Pin = SYS_PD_N_PIN; |
401 |
gpio_init.GPIO_Mode = GPIO_Mode_Out_OD; |
402 |
gpio_init.GPIO_Speed = GPIO_Speed_50MHz; |
403 |
GPIO_Init(SYS_PD_N_GPIO, &gpio_init); |
404 |
|
405 |
/* initialize SYS_SYNC_N and pull it down (active) */
|
406 |
GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
407 |
gpio_init.GPIO_Pin = SYS_SYNC_N_PIN; |
408 |
gpio_init.GPIO_Mode = GPIO_Mode_Out_OD; |
409 |
gpio_init.GPIO_Speed = GPIO_Speed_50MHz; |
410 |
GPIO_Init(SYS_SYNC_N_GPIO, &gpio_init); |
411 |
|
412 |
/*
|
413 |
* INPUTS
|
414 |
*/
|
415 |
|
416 |
} /*** end of initGpio ***/
|
417 |
|
418 |
/*
|
419 |
* Initialize all EXTI lines
|
420 |
*/
|
421 |
static void initExti() { |
422 |
/* configure EXTI lines */
|
423 |
GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource2); // SYS_SYNC_N
|
424 |
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource5); // LASER_OC_N
|
425 |
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource6); // SYS_UART_DN
|
426 |
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource8); // WL_GDO2
|
427 |
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource9); // WL_GDO0
|
428 |
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource14); // SYS_PD_N
|
429 |
|
430 |
return;
|
431 |
} /*** end of initExti ***/
|
432 |
|
433 |
/*
|
434 |
* Signals, which type of low-power mode the system shall enter after the shutdown sequence.
|
435 |
*/
|
436 |
ErrorStatus shutdownDisambiguationProcedure(const uint8_t type) {
|
437 |
GPIO_SetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
438 |
ErrorStatus ret_val = ERROR; |
439 |
|
440 |
switch (type) {
|
441 |
case BL_SHUTDOWN_PRI_RSN_UNKNOWN:
|
442 |
case BL_SHUTDOWN_PRI_RSN_HIBERNATE:
|
443 |
case BL_SHUTDOWN_PRI_RSN_DEEPSLEEP:
|
444 |
case BL_SHUTDOWN_PRI_RSN_TRANSPORT:
|
445 |
{ |
446 |
// broadcast a number of pulses, depending on the argument
|
447 |
uint8_t pulse_counter = 0;
|
448 |
for (pulse_counter = 0; pulse_counter < type; ++pulse_counter) { |
449 |
msleep(1);
|
450 |
GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
451 |
msleep(1);
|
452 |
GPIO_SetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
453 |
} |
454 |
// wait for timeout
|
455 |
msleep(10);
|
456 |
ret_val = SUCCESS; |
457 |
break;
|
458 |
} |
459 |
case BL_SHUTDOWN_PRI_RSN_RESTART:
|
460 |
{ |
461 |
// since there is no ambiguity for restart requests, no pulses are generated
|
462 |
msleep(10);
|
463 |
ret_val = SUCCESS; |
464 |
break;
|
465 |
} |
466 |
default:
|
467 |
ret_val = ERROR; |
468 |
break;
|
469 |
} |
470 |
|
471 |
return ret_val;
|
472 |
} /*** end of shutdownDisambiguationProcedure ***/
|
473 |
|
474 |
/*
|
475 |
* Final shutdown of the system to enter transportation mode.
|
476 |
*/
|
477 |
void shutdownToTransportation(const blt_bool exec_disambiguation) { |
478 |
/* configure some criticpal GPIOs as input
|
479 |
* This is required, because otherwise some hardware might be powered through these signals */
|
480 |
configGpioForShutdown(); |
481 |
|
482 |
/* wait for all boards to be ready for shutdown */
|
483 |
GPIO_SetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
484 |
// this must no be skipped, since the pull-up voltage for SYS_SYNC_N (VIO3.3) must be configured at this point by definition.
|
485 |
setLed(BLT_TRUE); |
486 |
waitForSignal(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN, Bit_SET); |
487 |
setLed(BLT_FALSE); |
488 |
|
489 |
if (exec_disambiguation == BLT_TRUE) {
|
490 |
/* execute disambiguation procedure and signal all modules to enter transportation mode */
|
491 |
if (shutdownDisambiguationProcedure(BL_SHUTDOWN_PRI_RSN_TRANSPORT) != SUCCESS) {
|
492 |
blinkSOS(1);
|
493 |
msleep(10);
|
494 |
} |
495 |
} |
496 |
|
497 |
/* morse 'OK' via the LED to signal that shutdown was successful */
|
498 |
blinkOK(1);
|
499 |
|
500 |
/* enter standby mode */
|
501 |
PWR_EnterSTANDBYMode(); |
502 |
|
503 |
return;
|
504 |
} /*** end of shutdownToTransportation ***/
|
505 |
|
506 |
/*
|
507 |
* Final shutdown of the system to enter deepsleep mode.
|
508 |
*/
|
509 |
void shutdownToDeepsleep(const blt_bool exec_disambiguation) { |
510 |
/* configure some criticpal GPIOs as input
|
511 |
* This is required, because otherwise some hardware might be powered through these signals */
|
512 |
configGpioForShutdown(); |
513 |
|
514 |
/* wait for all boards to be ready for shutdown */
|
515 |
GPIO_SetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
516 |
// this must no be skipped, since the pull-up voltage for SYS_SYNC_N (VIO3.3) must be configured at this point by definition.
|
517 |
setLed(BLT_TRUE); |
518 |
waitForSignal(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN, Bit_SET); |
519 |
setLed(BLT_FALSE); |
520 |
|
521 |
if (exec_disambiguation == BLT_TRUE) {
|
522 |
/* execute disambiguation procedure and signal all modules to enter deepsleep mode */
|
523 |
if (shutdownDisambiguationProcedure(BL_SHUTDOWN_PRI_RSN_DEEPSLEEP) != SUCCESS) {
|
524 |
blinkSOS(1);
|
525 |
msleep(10);
|
526 |
} |
527 |
} |
528 |
|
529 |
/* morse 'OK' via the LED to signal that shutdown was successful */
|
530 |
blinkOK(1);
|
531 |
|
532 |
/* enter standby mode */
|
533 |
PWR_EnterSTANDBYMode(); |
534 |
|
535 |
return;
|
536 |
} /*** end of shutdownToDeepsleep ***/
|
537 |
|
538 |
/*
|
539 |
* Final shutdown of the system to enter hibernate mode.
|
540 |
*/
|
541 |
void shutdownToHibernate(const blt_bool exec_disambiguation) { |
542 |
/* configure some criticpal GPIOs as input
|
543 |
* This is required, because otherwise some hardware might be powered through these signals */
|
544 |
configGpioForShutdown(); |
545 |
|
546 |
/* wait for all boards to be ready for shutdown */
|
547 |
GPIO_SetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
548 |
// this must no be skipped, since the pull-up voltage for SYS_SYNC_N (VIO3.3) must be configured at this point by definition.
|
549 |
setLed(BLT_TRUE); |
550 |
waitForSignal(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN, Bit_SET); |
551 |
setLed(BLT_FALSE); |
552 |
|
553 |
if (exec_disambiguation == BLT_TRUE) {
|
554 |
/* execute disambiguation procedure and signal all modules to enter hibernate mode */
|
555 |
if (shutdownDisambiguationProcedure(BL_SHUTDOWN_PRI_RSN_HIBERNATE) != SUCCESS) {
|
556 |
blinkSOS(1);
|
557 |
msleep(10);
|
558 |
} |
559 |
} |
560 |
|
561 |
/* morse 'OK' via the LED to signal that shutdown was successful */
|
562 |
blinkOK(1);
|
563 |
|
564 |
/* enter standby mode */
|
565 |
PWR_EnterSTANDBYMode(); |
566 |
|
567 |
return;
|
568 |
} /*** end of shutdownToHibernate ***/
|
569 |
|
570 |
void shutdownAndRestart(const blt_bool exec_disambiguation) { |
571 |
/* configure some criticpal GPIOs as input
|
572 |
* This is required, because otherwise some hardware might be powered through these signals */
|
573 |
configGpioForShutdown(); |
574 |
|
575 |
/* wait for all boards to be ready for shutdown */
|
576 |
GPIO_SetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
577 |
// this must no be skipped, since the pull-up voltage for SYS_SYNC_N (VIO3.3) must be configured at this point by definition.
|
578 |
setLed(BLT_TRUE); |
579 |
waitForSignal(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN, Bit_SET); |
580 |
setLed(BLT_FALSE); |
581 |
|
582 |
if (exec_disambiguation == BLT_TRUE) {
|
583 |
/* execute disambiguation procedure and signal all modules to restart in default mode */
|
584 |
if (shutdownDisambiguationProcedure(BL_SHUTDOWN_PRI_RSN_RESTART) != SUCCESS) {
|
585 |
blinkSOS(1);
|
586 |
msleep(10);
|
587 |
} |
588 |
} |
589 |
|
590 |
/* morse 'OK' via the LED to signal that shutdown was successful */
|
591 |
blinkOK(1);
|
592 |
|
593 |
/* enter standby mode */
|
594 |
PWR_EnterSTANDBYMode(); |
595 |
|
596 |
/*
|
597 |
* Even though this module will not restart the system by its own, the PowerManagement will reset the system.
|
598 |
*/
|
599 |
|
600 |
return;
|
601 |
} |
602 |
|
603 |
/*
|
604 |
* Configures some GPIO pins as inputs for safety reasons.
|
605 |
* Under certain circumstances, these pins might power hardware that is supposed to be shut down.
|
606 |
*/
|
607 |
void configGpioForShutdown() {
|
608 |
/* setup the configuration */
|
609 |
GPIO_InitTypeDef gpio_init; |
610 |
gpio_init.GPIO_Mode = GPIO_Mode_IN_FLOATING; |
611 |
gpio_init.GPIO_Speed = GPIO_Speed_50MHz; |
612 |
|
613 |
/* configure SYS_UART_TX */
|
614 |
gpio_init.GPIO_Pin = SYS_UART_TX_PIN; |
615 |
GPIO_Init(SYS_UART_TX_GPIO, &gpio_init); |
616 |
|
617 |
/* configure CAN_TX */
|
618 |
gpio_init.GPIO_Pin = CAN_TX_PIN; |
619 |
GPIO_Init(CAN_TX_GPIO, &gpio_init); |
620 |
|
621 |
/* configure all LASER signals */
|
622 |
gpio_init.GPIO_Pin = LASER_EN_PIN; |
623 |
GPIO_Init(LASER_EN_GPIO, &gpio_init); |
624 |
gpio_init.GPIO_Pin = LASER_TX_PIN; |
625 |
GPIO_Init(LASER_TX_GPIO, &gpio_init); |
626 |
|
627 |
/* configure all LIGHT (SPI) signals */
|
628 |
gpio_init.GPIO_Pin = LIGHT_SCLK_PIN; |
629 |
GPIO_Init(LIGHT_SCLK_GPIO, &gpio_init); |
630 |
gpio_init.GPIO_Pin = LIGHT_MOSI_PIN; |
631 |
GPIO_Init(LIGHT_MOSI_GPIO, &gpio_init); |
632 |
gpio_init.GPIO_Pin = LIGHT_XLAT_PIN; |
633 |
GPIO_Init(LIGHT_XLAT_GPIO, &gpio_init); |
634 |
gpio_init.GPIO_Pin = LIGHT_BLANK_PIN; |
635 |
GPIO_Init(LIGHT_BLANK_GPIO, &gpio_init); |
636 |
|
637 |
/* configure all WL (SPI) signals */
|
638 |
gpio_init.GPIO_Pin = WL_SS_N_PIN; |
639 |
GPIO_Init(WL_SS_N_GPIO, &gpio_init); |
640 |
gpio_init.GPIO_Pin = WL_SCLK_PIN; |
641 |
GPIO_Init(WL_SCLK_GPIO, &gpio_init); |
642 |
gpio_init.GPIO_Pin = WL_MOSI_PIN; |
643 |
GPIO_Init(WL_MOSI_GPIO, &gpio_init); |
644 |
|
645 |
return;
|
646 |
} /*** end of configGpioForShutdown ***/
|
647 |
|
648 |
/*
|
649 |
* System was reset via the NRST pin or the reason could not be detected.
|
650 |
* In this case, the system enters the boot loop and starts the OS.
|
651 |
*/
|
652 |
ErrorStatus handleWarmReset() { |
653 |
/* initialize the bootloader */
|
654 |
BootInit(); |
655 |
|
656 |
/* start the infinite program loop */
|
657 |
uint32_t loopStartTime = 0;
|
658 |
saTimerUpdate(&loopStartTime); |
659 |
uint32_t currentTime = loopStartTime; |
660 |
while (1) |
661 |
{ |
662 |
/* make the pseudo LED "double-blink" */
|
663 |
saTimerUpdate(¤tTime); |
664 |
if (currentTime < loopStartTime + 50) { |
665 |
setLed(BLT_TRUE); |
666 |
} else if (currentTime < loopStartTime + 50+100) { |
667 |
setLed(BLT_FALSE); |
668 |
} else if (currentTime < loopStartTime + 50+100+50) { |
669 |
setLed(BLT_TRUE); |
670 |
} else if ( currentTime < loopStartTime + 50+100+50+300) { |
671 |
setLed(BLT_FALSE); |
672 |
} else {
|
673 |
loopStartTime = currentTime; |
674 |
} |
675 |
|
676 |
/* run the bootloader task */
|
677 |
BootTask(); |
678 |
|
679 |
/* check the SYS_PD_N signal */
|
680 |
if (GPIO_ReadInputDataBit(SYS_PD_N_GPIO, SYS_PD_N_PIN) == Bit_RESET) {
|
681 |
blCallbackHandleShutdownRequest(); |
682 |
return SUCCESS;
|
683 |
} |
684 |
} |
685 |
|
686 |
return ERROR;
|
687 |
} /*** end of handleWarmReset ***/
|
688 |
|
689 |
/*
|
690 |
* Callback function that handles the system shutdown and enters transportation mode.
|
691 |
* When called from a multithreaded environment, it must be ensured that no other thread will preempt this function.
|
692 |
* In transportation low-power mode the system can only be woken up by pulling down the NRST signal.
|
693 |
* Furthermore, the system can not be charged when in transportation mode.
|
694 |
*/
|
695 |
void blCallbackShutdownTransportation() {
|
696 |
/* make sure that the required clocks are activated */
|
697 |
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); |
698 |
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE); |
699 |
|
700 |
/* set/keep the SYS_SYNC and SYS_PD signals active */
|
701 |
GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
702 |
GPIO_ResetBits(SYS_PD_N_GPIO, SYS_PD_N_PIN); |
703 |
|
704 |
saTimerInit(); |
705 |
|
706 |
setLed(BLT_TRUE); |
707 |
|
708 |
shutdownToTransportation(BLT_TRUE); |
709 |
|
710 |
return;
|
711 |
} /*** end of blCallbackShutdownTransportation ***/
|
712 |
|
713 |
/*
|
714 |
* Callback function that handles the system shutdown and enters deepsleep mode.
|
715 |
* When called from a multithreaded environment, it must be ensured that no other thread will preempt this function.
|
716 |
* In deepsleep low-power mode the system can only be woken up via the NRST or the WKUP signal, or the RTC or IWDG, if configured.
|
717 |
*/
|
718 |
void blCallbackShutdownDeepsleep(void) { |
719 |
/* make sure that the required clocks are activated */
|
720 |
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); |
721 |
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE); |
722 |
|
723 |
/* set/keep the SYS_SYNC and SYS_PD signals active */
|
724 |
GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
725 |
GPIO_ResetBits(SYS_PD_N_GPIO, SYS_PD_N_PIN); |
726 |
|
727 |
saTimerInit(); |
728 |
|
729 |
setLed(BLT_TRUE); |
730 |
|
731 |
shutdownToDeepsleep(BLT_TRUE); |
732 |
|
733 |
return;
|
734 |
} /*** end of blCallbackShutdownDeepsleep ***/
|
735 |
|
736 |
/*
|
737 |
* Callback function that handles the system shutdown and enters hibernate mode.
|
738 |
* When called from a multithreaded environment, it must be ensured that no other thread will preempt this function.
|
739 |
*/
|
740 |
void blCallbackShutdownHibernate(void) { |
741 |
/* make sure that the required clocks are activated */
|
742 |
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); |
743 |
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE); |
744 |
|
745 |
/* set/keep the SYS_SYNC and SYS_PD signals active */
|
746 |
GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
747 |
GPIO_ResetBits(SYS_PD_N_GPIO, SYS_PD_N_PIN); |
748 |
|
749 |
saTimerInit(); |
750 |
|
751 |
setLed(BLT_TRUE); |
752 |
|
753 |
shutdownToHibernate(BLT_TRUE); |
754 |
|
755 |
return;
|
756 |
} /*** end of blCallbackShutdownHibernate ***/
|
757 |
|
758 |
/*
|
759 |
* Callback function that handles the system shutdown and initializes a restart.
|
760 |
* When called from a multithreaded environment, it must be ensured that no other thread will preempt this function.
|
761 |
*/
|
762 |
void blCallbackShutdownRestart(void) { |
763 |
/* make sure that the required clocks are activated */
|
764 |
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); |
765 |
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE); |
766 |
|
767 |
/* set/keep the SYS_SYNC and SYS_PD signals active */
|
768 |
GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
769 |
GPIO_ResetBits(SYS_PD_N_GPIO, SYS_PD_N_PIN); |
770 |
|
771 |
/* ensure that all modules had a chance to detect the pulse on SYS_PD_N */
|
772 |
saTimerInit(); |
773 |
msleep(1);
|
774 |
GPIO_SetBits(SYS_PD_N_GPIO, SYS_PD_N_PIN); |
775 |
msleep(1);
|
776 |
|
777 |
shutdownAndRestart(BLT_TRUE); |
778 |
|
779 |
return;
|
780 |
} /** end of blCallbackShutdownRestart ***/
|
781 |
|
782 |
/*
|
783 |
* Callback function that handles a system shutdown/restart request from another module.
|
784 |
* Depending on the result of the disambiguation procedure, the module will enter the according low-power mode or restart.
|
785 |
* When called from a multithreaded environment, it must be ensured that no other thread will preempt this function.
|
786 |
*/
|
787 |
void blCallbackHandleShutdownRequest(void) { |
788 |
/* make sure that the required clocks are activated */
|
789 |
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); |
790 |
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE); |
791 |
|
792 |
/* set/keep the SYS_SYNC and SYS_PD signals active */
|
793 |
GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
794 |
GPIO_ResetBits(SYS_PD_N_GPIO, SYS_PD_N_PIN); |
795 |
|
796 |
/* ensure that all modules had a chance to detect the pulse on SYS_PD_N */
|
797 |
saTimerInit(); |
798 |
msleep(1);
|
799 |
GPIO_SetBits(SYS_PD_N_GPIO, SYS_PD_N_PIN); |
800 |
msleep(1);
|
801 |
|
802 |
/* wait for all boards to be ready for shutdown */
|
803 |
GPIO_SetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
804 |
// this must not be skipped, since the pull-up voltage for SYS_SYNC_N (VIO3.3) must be configured at this point by definition.
|
805 |
setLed(BLT_TRUE); |
806 |
waitForSignal(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN, Bit_SET); |
807 |
setLed(BLT_FALSE); |
808 |
|
809 |
/* check ths SYS_PD_N signal, whether the system shall shutdown or restart */
|
810 |
blt_bool shutdown_nrestart = (GPIO_ReadInputDataBit(SYS_PD_N_GPIO, SYS_PD_N_PIN) == Bit_RESET) ? BLT_TRUE : BLT_FALSE; |
811 |
|
812 |
/* disambiguation procedure (passive) */
|
813 |
uint32_t pulse_counter = 0;
|
814 |
while (waitForSignalTimeout(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN, Bit_RESET, 10)) { |
815 |
waitForSignal(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN, Bit_SET); |
816 |
++pulse_counter; |
817 |
} |
818 |
|
819 |
/* evaluate and hanlde disambiguation result */
|
820 |
if (shutdown_nrestart == BLT_TRUE) {
|
821 |
/* shutdown request */
|
822 |
|
823 |
/* handle special cases */
|
824 |
if (pulse_counter == BL_SHUTDOWN_PRI_RSN_UNKNOWN) {
|
825 |
/* no pulse at all was received */
|
826 |
pulse_counter = BL_SHUTDOWN_PRI_RSN_DEFAULT; |
827 |
} else if (pulse_counter != BL_SHUTDOWN_PRI_RSN_HIBERNATE && |
828 |
pulse_counter != BL_SHUTDOWN_PRI_RSN_DEEPSLEEP && |
829 |
pulse_counter != BL_SHUTDOWN_PRI_RSN_TRANSPORT) { |
830 |
/* invalid number of pulses received */
|
831 |
blinkSOS(1);
|
832 |
pulse_counter = BL_SHUTDOWN_PRI_RSN_DEFAULT; |
833 |
} |
834 |
|
835 |
switch (pulse_counter) {
|
836 |
case BL_SHUTDOWN_PRI_RSN_HIBERNATE:
|
837 |
shutdownToHibernate(BLT_FALSE); |
838 |
break;
|
839 |
case BL_SHUTDOWN_PRI_RSN_DEEPSLEEP:
|
840 |
shutdownToDeepsleep(BLT_FALSE); |
841 |
break;
|
842 |
case BL_SHUTDOWN_PRI_RSN_TRANSPORT:
|
843 |
shutdownToTransportation(BLT_FALSE); |
844 |
break;
|
845 |
} |
846 |
} else {
|
847 |
/* restart request */
|
848 |
|
849 |
/* there is no ambiguity for restart, so it is ignored */
|
850 |
shutdownAndRestart(BLT_FALSE); |
851 |
} |
852 |
|
853 |
/* if this code is reached, the system did neither shut down, nor restart.
|
854 |
* This must never be the case!
|
855 |
*/
|
856 |
blinkSOSinf(); |
857 |
return;
|
858 |
} /*** end of blCallbackHandleShutdownRequest ***/
|
859 |
|
860 |
/*********************************** end of main.c *************************************/
|