歼20航模遥控器开源项目计划（基于STM32）| 先做一个开机界面

STM32 开源项目

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发布时间: 2020-07-29

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阅读: 1753

####  为什么要用STM32做航模遥控器？Arduino不香嘛？
之前用Arduino Pro Mini制作了一个航模遥控器+接收机，不得不说Arduino开发起来非常方便，但是博主用的开发板比较廉价，芯片资源较少，只能实现基础功能，遥控性能也不能令人满意。我们的经费又不够来买大几百的UNO，怎么办？我找到了同价位的STM32F103C8T6开发板，十元包邮解君愁！这个小板子于我们遥控器而言，资源足够用了，别人甚至拿它来玩平衡车、四旋翼、智能家居，足见其强大！

#### 为什么要命名为J20遥控器？
其一，我们自己DIY的遥控器，当然要用我国之重器-J20来命名！相信如果当年LUOLI大佬开发遥控器时，我们祖国的J20面世了，他也会用J20来命名自己的遥控器，而不是SU27，每个人都有自己的民族自豪感，我也一样！

其二，J20的总设计师-杨伟院士，是我的学长！招生宣传一波哈哈哈哈哈哈，欢迎报考西北工业大学！（招生办是不是该打钱了）我们学校真是太低调了，当年报考前我压根没听说过西工大，宣传力度要加强啊。

其三，今年是2020年，就说应景不应景！J20中的数字也象征着我们的开发时间，独特的年份，用来命名我们的遥控器刚刚好~

#### 为什么要记录开发制作过程？
博主也是边学边做，并且是利用业余时间（导师：论文看累了，就敲点代码放松一下），实际上很耗费时间和精力啊！把学习过程记录下来，一是方便加深自己的理解，二是希望能帮到别人叭，三是提供给DIY玩家自己改造的空间，一千个人心中有一千个哈姆雷特，每个人都有自己的想法，授人以鱼不如授人以渔，教程可以帮助读者完成自己的个性化设计，比如设计开机界面、添加修改功能。

项目完全开源，还附带教程，怎么样？上车吧！

------------

#### 1. 项目计划
前天，北斗三号最后一颗全球组网卫星发射成功，实现全球组网。不得不说我们祖国越来越强大了，我们自己也要更努力才行啊，现在我们总被漂亮国卡脖子，但是莫欺少年穷！我们每个人都为祖国建设添砖加瓦，迟早祖国会实现伟大复兴！

北斗系统建设采用“三步走”战略-【从无到有-服务亚太-全球组网】，那么我们的遥控器也分三步走，先完成基础版，实现遥控器的基础功能，再进行升级，添加屏幕界面交互，最后添加更高级人性化的功能。先会爬 再会走路 最后学会奔跑，这样看，万物是不是都相通的？
![](https://cf04.ickimg.com/bbsimages/202007/366219e513a8b3218a005a9a297347e5.png)

#### 2. 开机界面制作 
侃了这么多，来开工吧，万事开头难，我们先做一个帅气的J20开机界面！
![](https://cf04.ickimg.com/bbsimages/202007/0f7084142e37f738bf9305e754879c39.png)

![](https://cf04.ickimg.com/bbsimages/202007/689727c242da2fd13b0c351ce16be810.png)

#### （1）修改图片尺寸
找一张J20图片，用2345看图王修改图片尺寸128像素*64像素（或者比这个范围小一点），因为我们的OLED显示屏只有128*64个像素点，这一步也可以和第二步一起用程序实现。
#### （2）图像二值化
所谓图像二值化，就是将彩色图片变成黑白的，我们的显示屏单个像素只有亮/暗两种状态，对应1/0二值。可以用MATLAB/Python/Photoshop等来处理成黑白的，这里我用的是MATLAB，图片和m文件放在同一文件夹，代码如下：
```python
    close all
    clear all
    clc
    %%
    A=imread('j20.jpg');% 输入图片
    n = graythresh(A);
    % D=imbinarize(A,n);
    D=im2bw(A,n);
    % figure;
    % imshow(D);
    imwrite(D,'j20.bmp');% 输出图片
    e=imread('j20.bmp');
    [m,n] = size(e);
    img = zeros(m,n);
    fd=[m,n,3];%设置空白图片矩阵
    f=uint8 (round (fd*255)); %转换为RGB值
    bg=255;%灰色背景51
    for i=1:1:m
       for j=1:1:n
           if (e(i,j)<=200)
               f(i,j,1)=91;
               f(i,j,2)=155;
               f(i,j,3)=213;
           else
               f(i,j,1)=255;
               f(i,j,2)=255;
               f(i,j,3)=255;
           end
       end
    end
    % figure;
    % imshow(f);
    % sa=imcrop(f,[0,0,140,140]);%裁剪[左上角起始位置x,y,裁剪宽,高]
    % imwrite(f,'j20.png');
```
生成j20.bmp后，有一些不满意的地方，接下来我们拿PS来修一下。

花费一点时间， 把边边角角清理干净，把线条补充上，再加个J-20文字，最后保存成bmp文件。
#### （3）Img2Lcd图片转数组（3）Img2Lcd图片转数组
打开刚才修好的bmp图片，按如下四步操作，保存数组。如果发现显示不对，可以尝试改变图中设置，如果你不想搞懂OLED显示原理，那么一个一个试就可以了。扫描模式（4种选项）和6个选项栏（勾选/不勾选），最多4*2^6=256次，我比较幸运，只试了10次。
![](https://cf04.ickimg.com/bbsimages/202007/0fed4ec9960776be399c72f062aa978b.png)

奉上我做好的两个数组，建议给我们的UI设计师加鸡腿！最后一张太好看了叭！

![](https://cf04.ickimg.com/bbsimages/202007/efafc8a29893d0f2f3811d50004b0dd3.png)

![](https://cf04.ickimg.com/bbsimages/202007/fa9ea4d358ec94621465facec77e6e9a.png)
```python
unsigned char J20logo[] =
{
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};
 
unsigned char J20logoR[]=
{
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};
```
#### （4）图片显示程序

首先声明数组是全局变量，再在循环中调用显示函数。
```python
    /@@*
    =============菜单显示==============
    	芯片STM32F103C8T6，先做一个J20开机界面
    	OLED显示屏：
    				GND   电源地
    				VCC   接3.3v电源
    				SCL   接PB8（SCL）
    				SDA   接PB9（SDA）
    	串口USB-TTL接法：	
    				GND   电源地
    				3V3   接3.3v
    				TXD   接PB7
    				RXD   接PB6
    	ST-LINK V2接法：
    				GND   电源地
    				3V3   接3.3v
    				SWCLK 接DCLK
    				SWDIO 接DIO
    	by Bilibili 蔡子CaiZi
    */
    #include "config.h"
    #include "delay.h"
    #include "usart.h"
    #include "stm32f10x.h"
    #include "oled.h"
    #include "rtc.h" 
    #include "stdio.h"
    #include "string.h"
    extern unsigned char J20logo[];
    extern unsigned char J20logoR[];
    extern unsigned char BMP1[];
    int main()
    {
    //	u8 txt[16]={0};
    	delay_init();//初始化延时函数
    	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2，2位抢占优先级和2位子优先级
    	usart_init(115200);//初始化串口1，波特率为115200
    //	TIM3_PWM_Init(19999,71);//预分频72，频率1MHz，周期1us；自动装载值20 000，故PWM周期1us*20 000
    //	TIM2_Init(499,71);//1MHz，每500us采集一次；可设置9us以上，但过小影响OLED显示
    //	DMA1_Init();	//DMA初始化
    //	GPIOA_Init();	//PA初始化
    //	Adc_Init();		//ADC初始化
    //	RTC_Init();	  	//RTC初始化
    	OLED_Init();	//初始化OLED  
    	OLED_Clear();
    	OLED_Refresh_Gram();
    	while (1){
    //		itoa(PWM1value,txt,10);//将int类型转换成10进制字符串
    //		printf("采样值：%d\t舵量：%s\t",ch1Value,txt);
    //		printf("当前时间：%d:%d:%d\n",calendar.hour,calendar.min,calendar.sec);
    //		//OLED_Clear();//一直清屏会造成闪烁
    //		strcat(txt," us");//合并字符串
    //		OLED_ShowString(6,3,txt,24); //位置6,3；字符大小24*24点阵
    		OLED_DrawBMP(0,0,128,8,J20logo);
    //		OLED_DrawBMP(0,0,128,8,BMP1);
    		//OLED_ShowString(6,3,"CaiZi",24); //位置6,3；字符大小24*24点阵
    		//OLED_Refresh_Gram();
    		delay_ms(500);
    	}
    }
```
完整的工程文件已上传天翼云盘：
 https://cloud.189.cn/t/rYZzQ3yIbIrm（访问码：5eju）

原文转自：蔡子CaiZi（bilibili专栏）

原创作品，未经权利人授权禁止转载。详情见转载须知。举报文章

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xdsnet 264天前...

当年差点到了西工大，老牌军工强校啊，好像最强的是潜艇方面的。

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