rt-thread/bsp/stm32f7-disco/drivers/board.c

/*
 * File      : board.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-05-17     ZYH          first implementation
 */

#include <rtthread.h>
#include "board.h"
#include "drv_mpu.h"
#include "drv_sdram.h"
#include <rthw.h>

/**
 * @addtogroup STM32
 */

static void SystemClock_Config(void)
{

  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;

    /**Configure the main internal regulator output voltage 
    */
  __HAL_RCC_PWR_CLK_ENABLE();

  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

    /**Initializes the CPU, AHB and APB busses clocks 
    */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE|RCC_OSCILLATORTYPE_LSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.LSEState = RCC_LSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 25;
  RCC_OscInitStruct.PLL.PLLN = 432;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 9;
  HAL_RCC_OscConfig(&RCC_OscInitStruct);
    /**Activate the Over-Drive mode 
    */
  HAL_PWREx_EnableOverDrive();

    /**Initializes the CPU, AHB and APB busses clocks 
    */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7);

  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_USART1
                              |RCC_PERIPHCLK_USART6|RCC_PERIPHCLK_UART4
                              |RCC_PERIPHCLK_UART5|RCC_PERIPHCLK_UART7
                              |RCC_PERIPHCLK_SDMMC2|RCC_PERIPHCLK_CLK48;
  PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
  PeriphClkInitStruct.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
  PeriphClkInitStruct.Uart4ClockSelection = RCC_UART4CLKSOURCE_PCLK1;
  PeriphClkInitStruct.Uart5ClockSelection = RCC_UART5CLKSOURCE_PCLK1;
  PeriphClkInitStruct.Usart6ClockSelection = RCC_USART6CLKSOURCE_PCLK2;
  PeriphClkInitStruct.Uart7ClockSelection = RCC_UART7CLKSOURCE_PCLK1;
  PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48SOURCE_PLL;
  PeriphClkInitStruct.Sdmmc2ClockSelection = RCC_SDMMC2CLKSOURCE_CLK48;
  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
}

void SysTick_Handler(void)
{
    /* enter interrupt */
    rt_interrupt_enter();

    rt_tick_increase();

    /* leave interrupt */
    rt_interrupt_leave();
}

HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
{
    /**Configure the Systick interrupt time
    */
    HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq() / RT_TICK_PER_SECOND);

    /**Configure the Systick
    */
    HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

    /* SysTick_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(SysTick_IRQn, 15, 0);
    return HAL_OK;
}

uint32_t HAL_GetTick(void)
{
    return rt_tick_get() * 1000 / RT_TICK_PER_SECOND;
}

void HAL_Delay(__IO uint32_t Delay)
{
    rt_thread_delay(Delay * 1000 / RT_TICK_PER_SECOND);
}

void HAL_SuspendTick(void)
{
    /* we should not suspend tick */
}

void HAL_ResumeTick(void)
{
    /* we should not resume tick */
}
#if defined(BSP_USING_SDRAM) && defined(RT_USING_MEMHEAP_AS_HEAP)
static struct rt_memheap system_heap;
#endif
void HAL_MspInit(void)
{
    HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);

    /* System interrupt init*/
    /* MemoryManagement_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(MemoryManagement_IRQn, 0, 0);
    /* BusFault_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(BusFault_IRQn, 0, 0);
    /* UsageFault_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(UsageFault_IRQn, 0, 0);
    /* SVCall_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(SVCall_IRQn, 0, 0);
    /* DebugMonitor_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(DebugMonitor_IRQn, 0, 0);
    /* PendSV_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(PendSV_IRQn, 15, 0);
    /* SysTick_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(SysTick_IRQn, 15, 0);
}

/**
 * This function will initial STM32 board.
 */
void rt_hw_board_init()
{
    /* Configure the MPU attributes as Write Through */
    bsp_mpu_hw_init();

    /* Enable I-Cache-------------------------------------------------------------*/
    rt_hw_cpu_icache_enable();

    /* Enable D-Cache-------------------------------------------------------------*/
    rt_hw_cpu_dcache_enable();

    /* STM32F7xx HAL library initialization:
    - Configure the Flash ART accelerator on ITCM interface
    - Configure the Systick to generate an interrupt each 1 msec
    - Set NVIC Group Priority to 4
    - Global MSP (MCU Support Package) initialization
    */
    /* Configure the system clock @ 216 Mhz */
    SystemClock_Config();

    HAL_Init();

#ifdef RT_USING_HEAP

#if defined(BSP_USING_SDRAM) && defined(RT_USING_MEMHEAP_AS_HEAP)
    bsp_sdram_hw_init();
    rt_system_heap_init((void *)SDRAM_BEGIN, (void *)SDRAM_END);
    rt_memheap_init(&system_heap, "sram", (void *)HEAP_BEGIN, HEAP_SIZE);
#else
    rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
#endif

#endif

#ifdef RT_USING_COMPONENTS_INIT
    rt_components_board_init();
#endif

#ifdef RT_USING_CONSOLE
    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
}