235 lines
9.8 KiB
C
235 lines
9.8 KiB
C
/************************************************************************************//**
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* \file Demo/ARMCM4_STM32F3_Discovery_F303VC_GCC/Prog/main.c
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* \brief Demo program application source file.
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* \ingroup Prog_ARMCM4_STM32F3_Discovery_F303VC_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) 2018 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 have received a copy of the GNU General Public License along with OpenBLT. It
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* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
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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 "header.h" /* generic header */
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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 SystemClock_Config(void);
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static void VectorBase_Config(void);
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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 exit 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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/* start the infinite program loop */
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while (1)
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{
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/* Toggle LED with a fixed frequency. */
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LedToggle();
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}
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/* Set program exit code. note that the program should never get here. */
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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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/* configure the vector table base address. */
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VectorBase_Config();
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* Configure the system clock. */
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SystemClock_Config();
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/* Initialize the timer driver. */
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TimerInit();
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/* Initialize the led driver. */
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LedInit();
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} /*** end of Init ***/
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/************************************************************************************//**
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** \brief Vector base address configuration. It should no longer be at the start of
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** flash memory but moved forward because the first part of flash is
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** reserved for the bootloader. Note that this is already done by the
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** bootloader before starting this program. Unfortunately, function
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** SystemInit() overwrites this change again.
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** \return none.
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**
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****************************************************************************************/
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static void VectorBase_Config(void)
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{
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/* The constant array with vectors of the vector table is declared externally in the
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* c-startup code.
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*/
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extern const unsigned long g_pfnVectors[];
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/* Remap the vector table to where the vector table is located for this program. */
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SCB->VTOR = (unsigned long)&g_pfnVectors[0];
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} /*** end of VectorBase_Config ***/
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/************************************************************************************//**
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** \brief System Clock Configuration. This code was created by CubeMX and configures
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** the system clock.
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** \return none.
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**
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****************************************************************************************/
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static void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct;
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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/* Initializes the CPU, AHB and APB busses clocks. */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
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RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
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RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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/* Clock configuration incorrect or hardware failure. Hang the system to prevent
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* damage.
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*/
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while(1);
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}
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/* Initializes the CPU, AHB and APB busses clocks. */
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
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{
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/* Clock configuration incorrect or hardware failure. Hang the system to prevent
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* damage.
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*/
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while(1);
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}
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} /*** end of SystemClock_Config ***/
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/************************************************************************************//**
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** \brief Initializes the Global MSP. This function is called from HAL_Init()
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** function to perform system level initialization (GPIOs, clock, DMA,
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** interrupt).
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** \return none.
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**
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****************************************************************************************/
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void HAL_MspInit(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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/* SYSCFG clock enable. */
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__HAL_RCC_SYSCFG_CLK_ENABLE();
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/* GPIO ports clock enable. */
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__HAL_RCC_GPIOF_CLK_ENABLE();
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__HAL_RCC_GPIOE_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/* Set priority grouping. */
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HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
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/* MemoryManagement_IRQn interrupt configuration. */
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HAL_NVIC_SetPriority(MemoryManagement_IRQn, 0, 0);
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/* BusFault_IRQn interrupt configuration. */
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HAL_NVIC_SetPriority(BusFault_IRQn, 0, 0);
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/* UsageFault_IRQn interrupt configuration. */
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HAL_NVIC_SetPriority(UsageFault_IRQn, 0, 0);
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/* SVCall_IRQn interrupt configuration. */
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HAL_NVIC_SetPriority(SVCall_IRQn, 0, 0);
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/* DebugMonitor_IRQn interrupt configuration. */
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HAL_NVIC_SetPriority(DebugMonitor_IRQn, 0, 0);
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/* PendSV_IRQn interrupt configuration. */
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HAL_NVIC_SetPriority(PendSV_IRQn, 0, 0);
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/* SysTick_IRQn interrupt configuration. */
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HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
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/* The STM32F3-Discovery board has a pull-up on the USB_DP line, which is always
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* enabled by default. If the USB USER cable is connected (for example after a
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* firmware update with the bootloader), this pull-up causes the USB host to try
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* and enumerate the USB device. This enumeration will fail if this application itself
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* does not make use of the USB peripheral. This failed enumeration is not a problem
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* for this application, but will cause the bootloader to not enumerate properly after
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* starting it via a system reset.
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* To prevent enumeration by the USB host, the USB device needs to stay in a
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* disconnected state, which is done by configuring the USB_DP line as a digital
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* output and setting it to logic low.
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_12;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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HAL_GPIO_WritePin(GPIOA, GPIO_PIN_12, GPIO_PIN_RESET);
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/* Configure the LED GPIO pin. */
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GPIO_InitStruct.Pin = GPIO_PIN_8;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
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} /*** end of HAL_MspInit ***/
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/************************************************************************************//**
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** \brief Deinitializes the Global MSP. This function is called from HAL_DeInit()
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** function to perform system level Deinitialization (GPIOs, clock, DMA,
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** interrupt).
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** \return none.
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**
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****************************************************************************************/
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void HAL_MspDeInit(void)
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{
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/* Deconfigure GPIO pin for the LED. */
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HAL_GPIO_WritePin(GPIOE, GPIO_PIN_8, GPIO_PIN_RESET);
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HAL_GPIO_DeInit(GPIOE, GPIO_PIN_8);
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/* GPIO ports clock disable. */
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__HAL_RCC_GPIOA_CLK_DISABLE();
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__HAL_RCC_GPIOE_CLK_DISABLE();
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__HAL_RCC_GPIOF_CLK_DISABLE();
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/* SYSCFG clock disable. */
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__HAL_RCC_SYSCFG_CLK_DISABLE();
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} /*** end of HAL_MspDeInit ***/
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/*********************************** end of main.c *************************************/
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