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openblt/Target/Demo/ARMCM0_STM32F0_Discovery_ST.../Boot/main.c

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/************************************************************************************//**
* \file Demo/ARMCM0_STM32F0_Discovery_STM32F051_GCC/Boot/main.c
* \brief Bootloader application source file.
* \ingroup Boot_ARMCM0_STM32F0_Discovery_STM32F051_GCC
* \internal
*----------------------------------------------------------------------------------------
* C O P Y R I G H T
*----------------------------------------------------------------------------------------
* Copyright (c) 2016 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 have received a copy of the GNU General Public License along with OpenBLT. It
* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
*
* \endinternal
****************************************************************************************/
/****************************************************************************************
* Include files
****************************************************************************************/
#include "boot.h" /* bootloader generic header */
#include "stm32f0xx.h" /* STM32 CPU and HAL header */
#include "stm32f0xx_ll_rcc.h" /* STM32 LL RCC header */
#include "stm32f0xx_ll_bus.h" /* STM32 LL BUS header */
#include "stm32f0xx_ll_system.h" /* STM32 LL SYSTEM header */
#include "stm32f0xx_ll_utils.h" /* STM32 LL UTILS header */
#include "stm32f0xx_ll_usart.h" /* STM32 LL USART header */
#include "stm32f0xx_ll_gpio.h" /* STM32 LL GPIO header */
/****************************************************************************************
* Function prototypes
****************************************************************************************/
static void Init(void);
static void SystemClock_Config(void);
/************************************************************************************//**
** \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 Program return code.
**
****************************************************************************************/
int main(void)
{
/* Initialize the microcontroller. */
Init();
/* Initialize the bootloader. */
BootInit();
/* Start the infinite program loop. */
while (1)
{
/* Run the bootloader task. */
BootTask();
}
/* program should never get here */
return 0;
} /*** end of main ***/
/************************************************************************************//**
** \brief Initializes the microcontroller.
** \return none.
**
****************************************************************************************/
static void Init(void)
{
/* HAL library initialization */
HAL_Init();
/* configure system clock */
SystemClock_Config();
} /*** end of Init ***/
/************************************************************************************//**
** \brief System Clock Configuration. This code was created by CubeMX and configures
** the system clock to match the configuration in the bootloader's
** configuration (blt_conf.h), specifically the macros:
** BOOT_CPU_SYSTEM_SPEED_KHZ and BOOT_CPU_XTAL_SPEED_KHZ.
** Note that the Lower Layer drivers were selected in CubeMX for the RCC
** subsystem.
** \return none.
**
****************************************************************************************/
static void SystemClock_Config(void)
{
/* Set flash latency. */
LL_FLASH_SetLatency(LL_FLASH_LATENCY_1);
/* Verify flash latency setting. */
if(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_1)
{
/* Error setting flash latency. */
ASSERT_RT(BLT_FALSE);
}
/* Enable the HSE clock and bypass as the MCO signal from the ST-link is used. */
LL_RCC_HSE_EnableBypass();
LL_RCC_HSE_Enable();
/* Wait till HSE is ready */
while(LL_RCC_HSE_IsReady() != 1)
{
;
}
/* Configure and enable the PLL. */
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSE_DIV_1, LL_RCC_PLL_MUL_6);
LL_RCC_PLL_Enable();
/* Wait till PLL is ready */
while(LL_RCC_PLL_IsReady() != 1)
{
;
}
LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
/* Wait till System clock is ready */
while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
{
;
}
/* Update the system clock speed setting. */
LL_SetSystemCoreClock(BOOT_CPU_SYSTEM_SPEED_KHZ * 1000u);
} /*** end of SystemClock_Config ***/
/************************************************************************************//**
** \brief Initializes the Global MSP. This function is called from HAL_Init()
** function to perform system level initialization (GPIOs, clock, DMA,
** interrupt).
** \return none.
**
****************************************************************************************/
void HAL_MspInit(void)
{
LL_GPIO_InitTypeDef GPIO_InitStruct;
/* SYSCFG clock enable. */
LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SYSCFG);
/* GPIO ports clock enable. */
LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA);
LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOC);
#if (BOOT_COM_RS232_ENABLE > 0)
/* UART clock enable. */
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2);
#endif
/* Configure GPIO pin for the LED. */
GPIO_InitStruct.Pin = LL_GPIO_PIN_8;
GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
LL_GPIO_Init(GPIOC, &GPIO_InitStruct);
LL_GPIO_ResetOutputPin(GPIOC, LL_GPIO_PIN_8);
/* Configure GPIO pin for (optional) backdoor entry input. */
GPIO_InitStruct.Pin = LL_GPIO_PIN_0;
GPIO_InitStruct.Mode = LL_GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
#if (BOOT_COM_RS232_ENABLE > 0)
/* UART TX and RX GPIO pin configuration. */
GPIO_InitStruct.Pin = LL_GPIO_PIN_2 | LL_GPIO_PIN_3;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
GPIO_InitStruct.Alternate = LL_GPIO_AF_1;
LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
#endif
} /*** end of HAL_MspInit ***/
/************************************************************************************//**
** \brief DeInitializes the Global MSP. This function is called from HAL_DeInit()
** function to perform system level de-initialization (GPIOs, clock, DMA,
** interrupt).
** \return none.
**
****************************************************************************************/
void HAL_MspDeInit(void)
{
/* Reset the RCC clock configuration to the default reset state. */
LL_RCC_DeInit();
/* Reset GPIO pin for the LED to turn it off. */
LL_GPIO_ResetOutputPin(GPIOC, LL_GPIO_PIN_8);
/* Deinit used GPIOs. */
LL_GPIO_DeInit(GPIOC);
LL_GPIO_DeInit(GPIOA);
#if (BOOT_COM_RS232_ENABLE > 0)
/* UART clock disable. */
LL_APB1_GRP1_DisableClock(LL_APB1_GRP1_PERIPH_USART2);
#endif
/* GPIO ports clock disable. */
LL_AHB1_GRP1_DisableClock(LL_AHB1_GRP1_PERIPH_GPIOC);
LL_AHB1_GRP1_DisableClock(LL_AHB1_GRP1_PERIPH_GPIOA);
/* SYSCFG clock disable. */
LL_APB1_GRP2_DisableClock(LL_APB1_GRP2_PERIPH_SYSCFG);
} /*** end of HAL_MspDeInit ***/
/*********************************** end of main.c *************************************/
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