STM32F103C8T6(HAL库函数 - 内部Flash操作)

简介

STM32F103C8T6 内部Flash 为 64KB，本次将对他多余空间进行读写。

介绍

数据手册下载

STM32F103x8/STM32F103xB 数据手册

包含Flash Memory Page分布

STM32F设备命名

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设备容量类型

中容量类型
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内部空间介绍

64 KBytes大小

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Flash Memory 从 0x0800 0000 ~ 0x0801 FFFF

页分布1K每页, STM32F103C8T6 只有64KByte, 那就是64页

代码

使用
controllerstech Flash Program Code
复制 FLASH_PAGE_F1.h 和 FLASH_PAGE_F1.c到项目中

FLASH_PAGE_F1.h 加入宏定义

#define FLASH_START_ADDRESS (0x08000000 + FLASH_PAGE_SIZE * 20) //0~20页这20K用于存储你的程序
#define FLASH_MAX_PAGE_NUM (64-1-20) // 0 ~ (63-20) 是最大的页码

FLASH_PAGE_F1.c 修改

static uint32_t GetPage(uint32_t Address)
{for (int indx=0; indx<(FLASH_MAX_PAGE_NUM+1); indx++){if((Address < (FLASH_START_ADDRESS + (FLASH_PAGE_SIZE *(indx+1))) ) && (Address >= (FLASH_START_ADDRESS + FLASH_PAGE_SIZE*indx))){return (FLASH_START_ADDRESS + FLASH_PAGE_SIZE*indx);}}return 0;
}

测试代码

main.c

char *data = "hello FLASH from ControllerTech\This is a test to see how many words can we work with";uint32_t data2[] = {0x1,0x2,0x3,0x4,0x5,0x6,0x7,0x8,0x9};uint32_t Rx_Data[30];char string[100];int number = 123;float val = 123.456;float RxVal;int main()
{
...
printf("Hello World!\r\n");Flash_Write_Data(GetPageFromPageNum(0) , (uint32_t *)data2, 9);Flash_Read_Data(GetPageFromPageNum(0) , Rx_Data, 10);printf ("RxData: { ");for ( int i = 0; i < 9; ++i ){printf ("0x%X ", Rx_Data[i]);}printf ("};\r\n");int numofwords = (strlen(data)/4)+((strlen(data)%4)!=0);Flash_Write_Data(GetPageFromPageNum(1) , (uint32_t *)data, numofwords);Flash_Read_Data(GetPageFromPageNum(1) , Rx_Data, numofwords);Convert_To_Str(Rx_Data, string);printf ("String: %s\r\n", string);Flash_Write_NUM(GetPageFromPageNum(2), number);RxVal = Flash_Read_NUM(GetPageFromPageNum(2));printf ("Read Num_1: %f\r\n", RxVal);Flash_Write_NUM(GetPageFromPageNum(3), val);RxVal = Flash_Read_NUM(GetPageFromPageNum(3));printf ("Read Num_2: %f\r\n", RxVal);
...
}