STM32HAL库 |
您所在的位置：网站首页 › stm32flash写保护 › STM32HAL库 |
STM32HAL库
|
目录 概述 一、使用方法 二、STM32CubeMx配置 三、Examples 四、运行结果 五、总结 概述本篇文章介绍如何使用STM32HAL库，针对芯片读写保护实现防篡改、破解功能（详解），本案例还包含内部FLASH读写数据，本质就是操作Flash。 硬件：STM32F103CBT6最小系统板 软件：Keil 5.29 + STM32CubeMX5.6.1
通过参阅《STM32中文参考手册》得知，不同型号的芯片对应FLASH大小不一样，如下所示：
在《STM32中文参考手册》pdf文档中找到，第2.3.3小节：嵌入式闪存，对应的页数30。 这里我使用的是STM32F103CBT6的FLASH是128k，通过手册得知是属于中容量，所以只需看下面FLASH地址分配图与每一页对应的大小（字节）即可。
想更详细的了解，请阅读《STM32中文参考手册》，自行上网查找资料下载。 二、STM32CubeMx配置
打开STM32CubeMx生成的keil工程，新建bsp文件夹，同时分别新建bsp_flash.c与bsp_flash.h文件，并把这两个文件，添加keil工程中来即可。
添加头文件路径
1、bsp_flash.h文件 #ifndef __BSP_FLASH_H #define __BSP_FLASH_H #ifdef __cplusplus extern "C" { #endif /* Includes ------------------------------------------------------------------*/ #include "stm32f1xx_hal.h" #define DATASTOREADDR 0x0800F800//数据存放地址 /* Error code */ typedef enum { FLASHIF_OK = 0, FLASHIF_ERASEKO, FLASHIF_WRITINGCTRL_ERROR, FLASHIF_WRITING_ERROR, FLASHIF_PROTECTION_ERRROR }Flash_Status_t; typedef enum { APPLICATION_NORMAL = 0, // APP能正常稳定运行 APPLICATION_UPDATED, // APP刚更新完成，等待测试启动 APPLICATION_ERROR, // APP错误，不能正常工作 }Application_Status_t; typedef __PACKED_STRUCT{ uint32_t Device_id; // 设备号 uint32_t Hardware_Version; // 硬件版本信息 uint32_t Application_Version; // APP软件版本 uint32_t Application_Status; // APP的状态. @Application_Status_t uint32_t SystemParamCRC; }SystemParamTypeDef; void Flash_Test(void); #ifdef __cplusplus } #endif #endif2、bsp_flash.c文件 #include "bsp_flash.h" #include "stdio.h" #include "string.h" HAL_StatusTypeDef FLASH_If_EnableReadProtection(void) { FLASH_OBProgramInitTypeDef OptionsBytesStruct = { 0 }; HAL_FLASHEx_OBGetConfig(&OptionsBytesStruct); HAL_StatusTypeDef result = HAL_OK; if (OptionsBytesStruct.RDPLevel == OB_RDP_LEVEL_0) { OptionsBytesStruct.OptionType = OPTIONBYTE_RDP; OptionsBytesStruct.RDPLevel = OB_RDP_LEVEL_1; HAL_FLASH_Unlock(); HAL_FLASH_OB_Unlock(); if (HAL_FLASHEx_OBProgram(&OptionsBytesStruct) != HAL_OK) { /* Launch the option byte loading */ HAL_FLASH_OB_Launch(); /* Lock the FLASH Option Control Registers access */ HAL_FLASH_OB_Lock(); HAL_FLASH_Lock(); return result; } /* Launch the option byte loading */ HAL_FLASH_OB_Launch(); /* Lock the FLASH Option Control Registers access */ HAL_FLASH_OB_Lock(); HAL_FLASH_Lock(); result = HAL_ERROR; } return result; } HAL_StatusTypeDef Flash_If_DisableReadProtection(void) { FLASH_OBProgramInitTypeDef OptionsBytesStruct = { 0 }; HAL_FLASHEx_OBGetConfig(&OptionsBytesStruct); HAL_StatusTypeDef result = HAL_OK; if (OptionsBytesStruct.RDPLevel == OB_RDP_LEVEL_1) { OptionsBytesStruct.OptionType = OPTIONBYTE_RDP; OptionsBytesStruct.RDPLevel = OB_RDP_LEVEL_0; HAL_FLASH_Unlock(); HAL_FLASH_OB_Unlock(); if (HAL_FLASHEx_OBProgram(&OptionsBytesStruct) != HAL_OK) { /* Launch the option byte loading */ HAL_FLASH_OB_Launch(); /* Lock the FLASH Option Control Registers access */ HAL_FLASH_OB_Lock(); HAL_FLASH_Lock(); return result; } /* Launch the option byte loading */ HAL_FLASH_OB_Launch(); /* Lock the FLASH Option Control Registers access */ HAL_FLASH_OB_Lock(); HAL_FLASH_Lock(); result = HAL_ERROR; } return result; } HAL_StatusTypeDef Set_FlashReadProtection(uint8_t mode) { HAL_StatusTypeDef result = HAL_ERROR; if (mode == 1) { FLASH_If_EnableReadProtection(); printf("EnableReadProtection!!!\r\n"); result = HAL_OK; } else { Flash_If_DisableReadProtection(); printf("DisableReadProtection!!!\r\n"); result = HAL_OK; } return result; } void FLASH_If_Init(void) { /* Unlock the Program memory */ HAL_FLASH_Unlock(); /* Clear all FLASH flags */ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPERR); // /* Unlock the Program memory */ HAL_FLASH_Lock(); } uint8_t FLASH_If_Write(uint32_t WriteAddr, uint32_t * pBuffer, uint32_t length) { static FLASH_EraseInitTypeDef pEraseInit; uint32_t pageerror = 0; //定义擦除出错时，返回的Flash地址 //uint32_t* pDATA = (uint32_t*)&pBuffer; // uint8_t page = sizeof(pBuffer) / sizeof(uint32_t); HAL_FLASH_Unlock(); pEraseInit.TypeErase = FLASH_TYPEERASE_PAGES; pEraseInit.PageAddress = WriteAddr; //定义数据地址 pEraseInit.NbPages = 1; //定义擦除页面数 - 页 = 1024byte // pEraseInit.Banks = FLASH_BANK_1; HAL_FLASHEx_Erase(&pEraseInit, &pageerror); //擦除Flash for (uint32_t i = 0; i < length; i++) { //HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, WriteAddr + i * 2, *(pDATA + i)); //半字节：FLASH_TYPEPROGRAM_HALFWORD #if 0 HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, WriteAddr + i * 4, *(pBuffer + i)); //字节：FLASH_TYPEPROGRAM_WORD #else if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, WriteAddr, *(uint32_t*)(pBuffer+i)) == HAL_OK) { /* Check the written value */ if (*(uint32_t*)WriteAddr != *(uint32_t*)(pBuffer+i)) { HAL_FLASH_Lock(); /* Flash content doesn't match SRAM content */ return(FLASHIF_WRITINGCTRL_ERROR); } /* Increment FLASH destination address */ WriteAddr += 4; } else { HAL_FLASH_Lock(); /* Error occurred while writing data in Flash memory */ return (FLASHIF_WRITING_ERROR); } #endif } HAL_FLASH_Lock(); return (FLASHIF_OK); } uint8_t FLASH_If_Read(uint32_t ReadAddr, uint32_t *pBuffer, uint32_t DataLength) { uint32_t i; for(i = 0; i < DataLength; i++) { pBuffer[i] = *(__IO uint32_t*)(ReadAddr);//读取4个字节. ReadAddr += 4;//偏移4个字节. } return (FLASHIF_OK); } void Flash_Test(void) { SystemParamTypeDef SystemParam_default = { .Device_id = 0x00000111, .Hardware_Version = 0x10000111, .Application_Version = 0x00000111, .Application_Status = APPLICATION_NORMAL }; SystemParamTypeDef SystemParam_update = { .Device_id = 0x00000222, .Hardware_Version = 0x10000222, .Application_Version = 0x10000222, .Application_Status = APPLICATION_UPDATED }; SystemParamTypeDef SystemParam_read; uint32_t page = sizeof(SystemParam_default) / sizeof(uint32_t); printf("Flash_Test!!!\r\n"); Set_FlashReadProtection(0); FLASH_If_Init(); //memset(SystemParam_default, 0, sizeof(SystemParam_default)); //清空结构体内容 memset(&SystemParam_read, 0, sizeof(SystemParam_read)); //清空结构体内容 FLASH_If_Write(DATASTOREADDR, (uint32_t*)&SystemParam_default, page); FLASH_If_Read(DATASTOREADDR, (uint32_t*)&SystemParam_read, page); printf("Device_id:0x%08lX, Hardware_Version:0x%08lX, Application_Version:0x%08lX, Application_Status:0x%08lX \r\n", SystemParam_read.Device_id, SystemParam_read.Hardware_Version, SystemParam_read.Application_Version, SystemParam_read.Application_Status); HAL_Delay(100); printf("UPDATA!!! \r\n"); //memset(&SystemParam_default, 0, sizeof(SystemParam_default)); //清空结构体内容 memset(&SystemParam_read, 0, sizeof(SystemParam_read)); //清空结构体内容 FLASH_If_Write(DATASTOREADDR, (uint32_t*)&SystemParam_update, page); FLASH_If_Read(DATASTOREADDR, (uint32_t*)&SystemParam_read, page); printf("Device_id:0x%08lX, Hardware_Version:0x%08lX, Application_Version:0x%08lX, Application_Status:0x%08lX \r\n", SystemParam_read.Device_id, SystemParam_read.Hardware_Version, SystemParam_read.Application_Version, SystemParam_read.Application_Status); }3、mian.c文件 /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * © Copyright (c) 2021 STMicroelectronics. * All rights reserved. * * This software component is licensed by ST under BSD 3-Clause license, * the "License"; You may not use this file except in compliance with the * License. You may obtain a copy of the License at: * opensource.org/licenses/BSD-3-Clause * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include "usart.h" #include "gpio.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include "stdio.h" #include "bsp_flash.h" /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /** * @brief The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_USART1_UART_Init(); /* USER CODE BEGIN 2 */ Flash_Test(); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { HAL_Delay(1000); HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin); /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ } /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /** Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /** Initializes the CPU, AHB and APB buses 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_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) { Error_Handler(); } } /* USER CODE BEGIN 4 */ #ifdef __GNUC__ /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf set to 'Yes') calls __io_putchar() */ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif /* __GNUC__ */ /** * @brief Retargets the C library printf function to the USART. * @param None * @retval None */ PUTCHAR_PROTOTYPE { /* Place your implementation of fputc here */ /* e.g. write a character to the EVAL_COM1 and Loop until the end of transmission */ HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF); return ch; } int fgetc(FILE * f) { uint8_t ch = 0; HAL_UART_Receive(&huart1, (uint8_t *)&ch, 1, 0xffff); return ch; } /* USER CODE END 4 */ /** * @brief This function is executed in case of error occurrence. * @retval None */ void Error_Handler(void) { /* USER CODE BEGIN Error_Handler_Debug */ /* User can add his own implementation to report the HAL error return state */ /* USER CODE END Error_Handler_Debug */ } #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval None */ void assert_failed(uint8_t *file, uint32_t line) { /* USER CODE BEGIN 6 */ /* User can add his own implementation to report the file name and line number, tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* USER CODE END 6 */ } #endif /* USE_FULL_ASSERT */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ 四、运行结果
只需在bsp_flash.c文件，修改这语句即可 Set_FlashReadProtection(1); 保存，编译，下载程序运行，运行结果：
Target-> Option Bytes... 传送门->代码(注：下载下来的代码需要修改，以博文为准，修改地方是：void Flash_Test() 函数) 五、总结好了，就介绍到此，防止别人盗版自己所开发的产品，建议加上此功能。这种加密手段能够在一定程度上增加芯片破解难度，对抄板公司设置门槛。 |
打开读保护
再次下载，就会提示，无法下载
使用ST-Link Utility工具，解除无法下载问题
此时，连接都无法连接，莫慌。
把 Read Out Protection 中的 Enabled，改为 Disabled 即可，点击下面“Apply”按键。
擦除芯片程序
擦除成功。
【本文地址】
今日新闻 |
推荐新闻 |