嵌入式工具庫-脫機離線下載器（STM32F103C8T6）

前言

在Gitee上發(fā)現(xiàn)了一個脫機下載器項目，我決定實踐復刻它。首先，我閱讀了項目的代碼，了解其實現(xiàn)原理和功能。接著，我自己進行一個電路圖的繪畫，并通過STM32系列的芯片進行了配置和連接。然后，按照原理圖對代碼進行了適當?shù)男薷暮驼{(diào)整，以適配我的硬件環(huán)境。最后，我進行了編譯、燒錄和調(diào)試的工作，測試了脫機下載器的功能，確保其正常工作。

最后進行了整機的調(diào)試，完成了這個復刻，后續(xù)將添加在線下載功能 ~~~~~

原理圖：

主要運用到的元器件：

STM32F103C8T6，W25Q128，無源晶振（8M），3.3穩(wěn)壓模塊，RGB燈（0805）

使用立創(chuàng)經(jīng)行的換圖與連線，咱就圖個免費 ~~

完成功能

1.離線下載

2.設(shè)置下載地址

3.添加提示音以及狀態(tài)燈

脫機下載器資料獲取

關(guān)注微信公眾號 -- 星之援工作室 發(fā)送關(guān)鍵字（脫機下載器）

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歡迎關(guān)注微信公眾號星之援工作室，公眾號不定時開源設(shè)計項目

支持單片機，Android系統(tǒng)設(shè)計成品定制，項目代做

請聯(lián)系微信：13648103287

PCB

繪制了兩板圖，一版是直接焊屏幕，一版就是直接買屏幕，個人偏向買屏幕，畢竟少焊點東西啦，節(jié)約時間以及提高容錯率

3D效果

正面

反面

實物圖

主要代碼展示

main.c

/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : main.c
 * @brief          : Main program body
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2022 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usb_device.h"
#include "key.h"
#include "led.h"
#include "oled.h"
#include "ff.h"
#include "flash_blob.h"
#include "offline.h"
#include "hex2bin.h"
#include "stmflash.h"

FRESULT Res;
FIL fnew;				  /* file objects */
FATFS fs;				  /* FatFs文件系統(tǒng)對象 */
DIR DirInfo;			  /* 目錄信息 */
FILINFO FileInfo;		  /* 文件信息 */
int8_t name_cnt = 0;	  /* 文件個數(shù) */
BYTE work[FF_MAX_SS];	  /* FatFs文件工作區(qū)域 */
char Name_Buffer[20][20]; /* 文件名 */
int8_t Select_file = 0;	  /* 選中下載文件 */
uint32_t flash_addr = 0x8000000;
uint8_t mode = 0;

int main(void)
{
	uint8_t RES_FS = 0;
	uint8_t addr[4];
	HAL_Init();
	SystemClock_Config();
	OLED_Init();
	MX_USB_DEVICE_Init();
	MX_KEY_Init();
	MX_LED_Init();

	// 賦值falsh
	//  STMFLASH_Read(FLASH_SAVE_ADDR, (uint16_t *)addr, 4);
	//  flash_addr = ((addr[0] << 8 | addr[1]) << 8 | addr[2]) << 8 | addr[3];

	// FATFS文件系統(tǒng)掛載
	algo_init();				  // 下載算法初始化
	RES_FS = f_mount(&fs, "", 1); // 掛載文件系統(tǒng)
	if (RES_FS == FR_OK)
		;
	else if (RES_FS == FR_NO_FILESYSTEM) // 如果是新芯片還沒有文件系統(tǒng)
	{
		OLED_ShowString(0, 2, "Fatfs Format..", 12);
		f_mkfs("", 0, work, sizeof(work));
		OLED_ShowString(0, 2, "Format Finished", 12);
	}
	else
		OLED_ShowString(0, 2, "Fatfs Failed..", 12);

	// f_unlink("write.bin");
	//  讀取文件名到文件列表
	if (f_opendir(&DirInfo, (const TCHAR *)"0:") == FR_OK) // 讀取根目錄下文件信息
	{
		f_readdir(&DirInfo, &FileInfo);
		while (f_readdir(&DirInfo, &FileInfo) == FR_OK) // 讀文件信息到文件狀態(tài)結(jié)構(gòu)體中
		{
			if (!FileInfo.fname[0])
				break;
			strcpy(Name_Buffer[name_cnt], FileInfo.fname);
			if (strstr(Name_Buffer[name_cnt], ".BIN"))
			{
				name_cnt++;
				if (name_cnt >= 20) // 最多保存20個文件名
					break;
			}
			if (strstr(Name_Buffer[name_cnt], ".HEX"))
			{
				name_cnt++;
				if (name_cnt >= 20) // 最多保存20個文件名
					break;
			}
		}
	}
	while (1)
	{
		menu();
	}
	/* USER CODE END 3 */
}

void menu(void)
{
	static uint8_t mode_status = 0;
	switch (mode)
	{
	case 0: // 功能選擇
		select_function();
		break;
	case 1: // 離線下載模式
		Downloader();
		break;
	case 2: // flash下載地址
		FlashAddr_Set();
		break;
	}
	if (mode != mode_status)
	{
		mode_status = mode;
		OLED_Clear();
	}
}

void OLED_ShowMenu(uint8_t num)
{
	switch (num)
	{
	case 0: // 離線下載
		OLED_ShowCH(24, 0, 0);
		OLED_ShowCH(36, 0, 1);
		OLED_ShowCH(48, 0, 2);
		OLED_ShowCH(60, 0, 3);
		// 地址設(shè)置
		OLED_ShowCH(24, 2, 4);
		OLED_ShowCH(36, 2, 5);
		OLED_ShowCH(48, 2, 6);
		OLED_ShowCH(60, 2, 7);
		break;

	case 1: // 文件選擇
		OLED_ShowCH(0, 0, 8);
		OLED_ShowCH(12, 0, 9);
		OLED_ShowCH(24, 0, 10);
		OLED_ShowCH(36, 0, 11);
		break;

	case 2: // 地址
		OLED_ShowString(0, 0, "FLASH", 12);
		OLED_ShowCH(40, 0, 12);
		OLED_ShowCH(52, 0, 13);
		OLED_ShowCH(64, 0, 4);
		OLED_ShowCH(76, 0, 5);
		break;
	}
}

void select_function(void)
{
	static uint8_t t = 1;
	uint8_t key;
	key = KEY_Scan();
	if (key == KEY0_PRES)
	{
		t++;
		if (t > 2)
			t = 1;
	}
	else if (key == KEY1_PRES) // 返回主頁面
	{
		mode = 0;
		t = 1;
	}
	else if (key == KEY2_PRES) // 確認
	{
		mode = t;
		t = 1;
	}
	switch (t)
	{
	case 1:
		OLED_ShowString(0, 2, "  ", 12);
		OLED_ShowString(0, 0, "->", 12);
		break;

	case 2:
		OLED_ShowString(0, 0, "  ", 12);
		OLED_ShowString(0, 2, "->", 12);
		break;
	}
	OLED_ShowMenu(0);
}

void Downloader(void)
{
	uint8_t key = 0;
	key = KEY_Scan();
	if (key == KEY0_PRES)
	{
		Select_file++;
		OLED_ShowString(0, 2, "                ", 12);
	}
	else if (key == KEY1_PRES) // 返回主頁面
		mode = 0;
	else if (key == KEY2_PRES)
		Auto_Fash();
	if (name_cnt == 0)
		Select_file = 0;
	else
	{
		if (Select_file >= name_cnt)
			Select_file = 0;
		else if (Select_file < 0)
			Select_file = name_cnt - 1;
	}
	OLED_ShowMenu(1);
	OLED_ShowString(0, 2, (uint8_t *)Name_Buffer[Select_file], 12);
	if (name_cnt == 0)
		OLED_ShowNum(90, 0, Select_file, 2, 12);
	else
		OLED_ShowNum(90, 0, Select_file + 1, 2, 12);
	OLED_ShowString(102, 0, "/", 12);
	OLED_ShowNum(114, 0, name_cnt, 2, 12);
}

void FlashAddr_Set(void)
{
	static uint8_t k = 0, k1 = 0;
	static uint8_t setmode = 0;
	static uint8_t ad[4];
	static uint8_t addr[8];
	uint8_t key = 0, i;
	addr[7] = (flash_addr / 0x01) % 16;
	addr[6] = (flash_addr / 0x10) % 16;
	addr[5] = (flash_addr / 0x100) % 16;
	addr[4] = (flash_addr / 0x1000) % 16;
	addr[3] = (flash_addr / 0x10000) % 16;
	addr[2] = (flash_addr / 0x100000) % 16;
	addr[1] = (flash_addr / 0x1000000) % 16;
	addr[0] = (flash_addr / 0x10000000) % 16;
	OLED_ShowMenu(2);
	OLED_ShowString(0, 2, "0x", 12);

	while (1)
	{
		for (i = 0; i < 8; i++)
		{
			if (addr[i] < 10)
				OLED_ShowChar(18 + 6 * i, 2, addr[i] + 48, 12);
			else
				OLED_ShowChar(18 + 6 * i, 2, addr[i] + 65 - 10, 12);
		}

		key = KEY_Scan();
		if (key == KEY0_PRES)
		{
			if (setmode == 0)
			{
				OLED_ShowString(18 + 6 * k, 3, "|", 12);
				setmode = 1;
			}
			else if (setmode == 1)
			{
				addr[k]++;
				if (addr[k] > 15)
					addr[k] = 0;
			}
		}
		else if (key == KEY1_PRES)
		{
			if (setmode == 0)
			{
				mode = 0;
				break;
			}
			else if (setmode == 1)
			{
				k++;
				if (k >= 8)
					k = 0;
			}
		}
		else if (key == KEY2_PRES)
		{
			if (setmode == 0)
			{
				// flash_addr = 0;

				ad[0] = addr[0] << 4 | addr[1];
				ad[1] = addr[2] << 4 | addr[3];
				ad[2] = addr[4] << 4 | addr[5];
				ad[3] = addr[6] << 4 | addr[7];

				flash_addr = ((ad[0] << 8 | ad[1]) << 8 | ad[2]) << 8 | ad[3];
				STMFLASH_Write(FLASH_SAVE_ADDR, (uint16_t *)ad, 4);
				HAL_Delay(1000);
				mode = 0;
				k = 0;
				break;
			}
			else if (setmode == 1)
			{
				setmode = 0;
				OLED_ShowString(18 + 6 * k1, 3, " ", 12);
			}
		}

		if (k1 != k)
		{
			OLED_ShowString(18 + 6 * k1, 3, " ", 12);
			OLED_ShowString(18 + 6 * k, 3, "|", 12);
			k1 = k;
		}
	}
}

/**
 * @brief System Clock Configuration
 * @retval None
 */
void SystemClock_Config(void)
{
	RCC_OscInitTypeDef RCC_OscInitStruct = {0};
	RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
	RCC_PeriphCLKInitTypeDef PeriphClkInit = {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();
	}
	PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
	PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
	if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
	{
		Error_Handler();
	}
}

/* USER CODE BEGIN 4 */

/* 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 */
	__disable_irq();
	while (1)
	{
	}
	/* 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,
	   ex: printf("Wrong parameters value: file %s on line %drn", file, line) */
	/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

演示視頻

USB文件（自己使用自己的HEX文件即可）

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