/**
  ******************************************************************
  * @file    main.c
  * @author  fire
  * @version V1.0
  * @date    2018-xx-xx
  * @brief   FMC-SDRAM
  ******************************************************************
  * @attention
  *
  * 实验平台:野火 STM32H750开发板 
  * 论坛    :http://www.firebbs.cn
  * 淘宝    :http://firestm32.taobao.com
  *
  ******************************************************************
  */  
#include <stdlib.h>
#include "stm32h7xx.h"
#include "main.h"
#include "./led/bsp_led.h" 
#include "./usart/bsp_usart.h"
#include "./sdram/bsp_sdram.h" 
#include "./delay/core_delay.h" 

void SystemClock_Config(void);

void Delay(__IO uint32_t nCount); 

//定义变量到SDRAM
uint32_t testValue  =7 ;
//定义变量到SDRAM
uint32_t testValue2  =0;

//定义数组到SDRAM
uint8_t testGrup[100]  ={0};
//定义数组到SDRAM
uint8_t testGrup2[100] ={1,2,3};

/**
  * @brief  主函数
  * @param  无
  * @retval 无
  */
int main(void)
{
  uint32_t inerTestValue =10;
  uint32_t * pointer;
  
  /* 系统时钟初始化成400 MHz */
  SystemClock_Config();
  
  /* LED 端口初始化 */
  LED_GPIO_Config();   
    
  /* 初始化串口 */
  UARTx_Config();
  
  printf("\r\nSCT文件应用——自动分配变量到SDRAM实验\r\n");

  printf("\r\n使用“ uint32_t inerTestValue =10; ”语句定义的局部变量：\r\n");
  printf("结果：它的地址为：0x%x,变量值为：%d\r\n",(uint32_t)&inerTestValue,inerTestValue);

  printf("\r\n使用“uint32_t testValue  =7 ;”语句定义的全局变量：\r\n");
  printf("结果：它的地址为：0x%x,变量值为：%d\r\n",(uint32_t)&testValue,testValue);

  printf("\r\n使用“uint32_t testValue2  =0 ; ”语句定义的全局变量：\r\n");
  printf("结果：它的地址为：0x%x,变量值为：%d\r\n",(uint32_t)&testValue2,testValue2); 

  printf("\r\n使用“uint8_t testGrup[100]  ={0};”语句定义的全局数组：\r\n");
  printf("结果：它的地址为：0x%x,变量值为：%d,%d,%d\r\n",(uint32_t)&testGrup,testGrup[0],testGrup[1],testGrup[2]);

  printf("\r\n使用“uint8_t testGrup2[100] ={1,2,3};”语句定义的全局数组：\r\n");
  printf("结果：它的地址为：0x%x,变量值为：%d，%d,%d\r\n",(uint32_t)&testGrup2,testGrup2[0],testGrup2[1],testGrup2[2]);

  pointer = (uint32_t*)malloc(sizeof(uint32_t)*3);
  if(pointer != NULL)
  {
    *(pointer)=1;
    *(++pointer)=2;
    *(++pointer)=3; 

    printf("\r\n使用“ uint32_t *pointer = (uint32_t*)malloc(sizeof(uint32_t)*3); ”动态分配的变量\r\n");
    printf("\r\n定义后的操作为：\r\n*(pointer++)=1;\r\n*(pointer++)=2;\r\n*pointer=3;");
    printf("\r\n结果：操作后它的地址为：0x%x,查看变量值操作：\r\n",(uint32_t)pointer); 
    printf("*(pointer--)=%d, \r\n",*(pointer--));
    printf("*(pointer--)=%d, \r\n",*(pointer--));
    printf("*(pointer)=%d, \r\n",*(pointer));
  }
  else
  {
    printf("\r\n使用malloc动态分配变量出错！！！\r\n");  
  }
  /*绿灯亮*/
  LED_BLUE; 
  while(1);
}  


/**
  * @brief  System Clock 配置
  *         system Clock 配置如下: 
	*            System Clock source  = PLL (HSE)
	*            SYSCLK(Hz)           = 400000000 (CPU Clock)
	*            HCLK(Hz)             = 200000000 (AXI and AHBs Clock)
	*            AHB Prescaler        = 2
	*            D1 APB3 Prescaler    = 2 (APB3 Clock  100MHz)
	*            D2 APB1 Prescaler    = 2 (APB1 Clock  100MHz)
	*            D2 APB2 Prescaler    = 2 (APB2 Clock  100MHz)
	*            D3 APB4 Prescaler    = 2 (APB4 Clock  100MHz)
	*            HSE Frequency(Hz)    = 25000000
	*            PLL_M                = 5
	*            PLL_N                = 160
	*            PLL_P                = 2
	*            PLL_Q                = 4
	*            PLL_R                = 2
	*            VDD(V)               = 3.3
	*            Flash Latency(WS)    = 4
  * @param  None
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_OscInitTypeDef RCC_OscInitStruct;
  HAL_StatusTypeDef ret = HAL_OK;
  
  /*使能供电配置更新 */
  MODIFY_REG(PWR->CR3, PWR_CR3_SCUEN, 0);

  /* 当器件的时钟频率低于最大系统频率时，电压调节可以优化功耗，
		 关于系统频率的电压调节值的更新可以参考产品数据手册。  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
 
  /* 启用HSE振荡器并使用HSE作为源激活PLL */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
  RCC_OscInitStruct.CSIState = RCC_CSI_OFF;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLM = 5;
  RCC_OscInitStruct.PLL.PLLN = 160;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLQ = 2;
 
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
  ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
  if(ret != HAL_OK)
  {
    while(1) { ; }
  }
  
	/* 选择PLL作为系统时钟源并配置总线时钟分频器 */
  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK  | \
																 RCC_CLOCKTYPE_HCLK    | \
																 RCC_CLOCKTYPE_D1PCLK1 | \
																 RCC_CLOCKTYPE_PCLK1   | \
                                 RCC_CLOCKTYPE_PCLK2   | \
																 RCC_CLOCKTYPE_D3PCLK1);
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;  
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2; 
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2; 
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2; 
  ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4);
  if(ret != HAL_OK)
  {
    while(1) { ; }
  }
}
/****************************END OF FILE***************************/