stm32 Flash读写[库函数]

#include "stm32f10x.h"
#include "stdio.h"

#define  PRINTF_ON  1

void RCC_Configuration(void);
void GPIO_Configuration(void);
void USART_Configuration(void);

u32 count=0;

u16 data[5]={0x0001,0x0002,0x0003,0x0004,0x0005};

int main(void)
{
   RCC_Configuration();
 GPIO_Configuration();
 USART_Configuration();

 RCC_HSICmd(ENABLE);

 FLASH_Unlock();

 FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_PGERR|FLASH_FLAG_WRPRTERR);

 FLASH_ErasePage(0x8002000);

 while(count < 5)
 {
  FLASH_ProgramHalfWord((0x8002000 +count*2),data[count]);  //flash  为一个字节存储，16位数据必须地址加2

  count++;
 
 }

 FLASH_Lock();

 count = 0;

 printf("\r\n The Five Data Is : \r\n");

 while(count < 5)
 {
  
  printf("\r %d \r",*(u8 *)(0x8002000 + count*2));   //读取方法

  count++;
 

 }

 while(1);
 
}

void GPIO_Configuration(void)
{
 GPIO_InitTypeDef GPIO_InitStructure;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;   
   GPIO_Init(GPIOA , &GPIO_InitStructure); 
 
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;   
   GPIO_Init(GPIOA , &GPIO_InitStructure); 
}

void RCC_Configuration(void)
{
 /* 定义枚举类型变量 HSEStartUpStatus */
 ErrorStatus HSEStartUpStatus;

   /* 复位系统时钟设置*/
   RCC_DeInit();
   /* 开启HSE*/
   RCC_HSEConfig(RCC_HSE_ON);
   /* 等待HSE起振并稳定*/
   HSEStartUpStatus = RCC_WaitForHSEStartUp();
 /* 判断HSE起是否振成功，是则进入if()内部 */
   if(HSEStartUpStatus == SUCCESS)
   {
     /* 选择HCLK（AHB）时钟源为SYSCLK 1分频 */
     RCC_HCLKConfig(RCC_SYSCLK_Div1); 
     /* 选择PCLK2时钟源为 HCLK（AHB） 1分频 */
     RCC_PCLK2Config(RCC_HCLK_Div1); 
     /* 选择PCLK1时钟源为 HCLK（AHB） 2分频 */
     RCC_PCLK1Config(RCC_HCLK_Div2);
     /* 设置FLASH延时周期数为2 */
     FLASH_SetLatency(FLASH_Latency_2);
     /* 使能FLASH预取缓存 */
     FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
     /* 选择锁相环（PLL）时钟源为HSE 1分频，倍频数为9，则PLL输出频率为 8MHz * 9 = 72MHz */
     RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
     /* 使能PLL */ 
     RCC_PLLCmd(ENABLE);
     /* 等待PLL输出稳定 */
     while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
     /* 选择SYSCLK时钟源为PLL */
     RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
     /* 等待PLL成为SYSCLK时钟源 */
     while(RCC_GetSYSCLKSource() != 0x08);
   } 
   /* 打开APB2总线上的GPIOA时钟*/
   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1, ENABLE);

 //RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

 //RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE);
 //RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR|RCC_APB1Periph_BKP|RCC_APB1Periph_WWDG, ENABLE);
  
}

 
void USART_Configuration(void)
{
 USART_InitTypeDef USART_InitStructure;
 USART_ClockInitTypeDef USART_ClockInitStructure;

 USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
 USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
 USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;                                                                                                                                                      
 USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
 USART_ClockInit(USART1 , &USART_ClockInitStructure);

 USART_InitStructure.USART_BaudRate = 9600;
 USART_InitStructure.USART_WordLength = USART_WordLength_8b;
 USART_InitStructure.USART_StopBits = USART_StopBits_1;
 USART_InitStructure.USART_Parity = USART_Parity_No;
 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
 USART_InitStructure.USART_Mode = USART_Mode_Rx|USART_Mode_Tx;
 USART_Init(USART1,&USART_InitStructure);

  USART_Cmd(USART1,ENABLE);
}

#if  PRINTF_ON

int fputc(int ch,FILE *f)
{
 USART_SendData(USART1,(u8) ch);
 while(USART_GetFlagStatus(USART1,USART_FLAG_TC) == RESET);
 return ch;
}

#endif