113 lines
4.7 KiB
C
113 lines
4.7 KiB
C
/************************************************************************************//**
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* \file Demo\ARMCM0_STM32_Discovery_STM32F051_GCC\Boot\main.c
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* \brief Bootloader application source file.
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* \ingroup Boot_ARMCM0_STM32_Discovery_STM32F051_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) 2016 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 "boot.h" /* bootloader generic header */
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#include "stm32f0xx.h" /* for STM32F0 registers and drivers */
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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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/************************************************************************************//**
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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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/* initialize the bootloader */
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BootInit();
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/* start the infinite program loop */
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while (1)
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{
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/* run the bootloader task */
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BootTask();
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}
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/* 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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GPIO_InitTypeDef GPIO_InitStructure;
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/* enable the GPIO LED clock */
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
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/* enable the USART2 clock */
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
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/* enable the USART2 Tx/Rx and pushbutton GPIO clock */
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
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/* configure the GPIO_LED pin */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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/* turn the LED off */
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GPIO_ResetBits(GPIOC, GPIO_Pin_8);
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/* configure the pushbutton pin as input */
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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/* configure alternate function for the USART2 Tx/Rx pins */
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_1);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_1);
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/* Configure USART2 pins: Rx (PA2) and Tx (PA3) */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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} /*** end of Init ***/
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/*********************************** end of main.c *************************************/
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