246 lines
9.8 KiB
C
246 lines
9.8 KiB
C
/************************************************************************************//**
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* \file Demo/ARMCM0_STM32G0_Nucleo_G071RB_IAR/Prog/main.c
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* \brief Demo program application source file.
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* \ingroup Prog_ARMCM0_STM32G0_Nucleo_G071RB_IAR
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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) 2019 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 none.
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**
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****************************************************************************************/
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void 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 interface */
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BootComInit();
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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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/* check for bootloader activation request */
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BootComCheckActivationRequest();
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}
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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 __vector_table[];
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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)&__vector_table[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 = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
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/* Configure the main internal regulator output voltage. */
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HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
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/* Initializes the CPU, AHB and APB busses clocks. */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
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RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV4;
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RCC_OscInitStruct.PLL.PLLN = 64;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
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RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV4;
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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;
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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_DIV1;
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/* Set the flash latency. */
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
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{
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/* Flash latency configuration incorrect or hardware failure. Hang the system to
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* prevent damage.
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*/
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while(1);
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}
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/* Configure the UART2 clock */
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PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2;
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PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
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if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
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{
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/* USART2 clock configuration incorrect or hardware failure. Hang the system to
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* prevent 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_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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#if (BOOT_COM_RS232_ENABLE > 0)
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/* Peripheral clock enable. */
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__HAL_RCC_USART2_CLK_ENABLE();
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#endif /* BOOT_COM_RS232_ENABLE > 0 */
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/* SVC_IRQn interrupt configuration */
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HAL_NVIC_SetPriority(SVC_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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/* Configure the LED GPIO pin. */
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GPIO_InitStruct.Pin = GPIO_PIN_5;
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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(GPIOA, &GPIO_InitStruct);
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#if (BOOT_COM_RS232_ENABLE > 0)
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/* UART TX and RX GPIO pin configuration. */
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GPIO_InitStruct.Pin = GPIO_PIN_2 | GPIO_PIN_3;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_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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GPIO_InitStruct.Alternate = GPIO_AF1_USART2;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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#endif /* BOOT_COM_RS232_ENABLE > 0 */
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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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#if (BOOT_COM_RS232_ENABLE > 0)
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/* Reset UART GPIO pin configuration. */
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2 | GPIO_PIN_3);
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#endif /* BOOT_COM_RS232_ENABLE > 0 */
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/* Deconfigure GPIO pin for the LED. */
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HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET);
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5);
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#if (BOOT_COM_RS232_ENABLE > 0)
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/* Peripheral clock disable. */
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__HAL_RCC_USART2_CLK_DISABLE();
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#endif /* BOOT_COM_RS232_ENABLE > 0 */
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/* GPIO ports clock disable. */
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__HAL_RCC_GPIOB_CLK_DISABLE();
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__HAL_RCC_GPIOA_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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