蓝桥杯之嵌入式STM32F103RBT6教程及常见问题

浅浅的花香味﹌ 2023-02-24 11:22 8阅读 0赞

## 蓝桥杯之嵌入式STM32F103RBT6教程及常见问题 ##

## 蓝桥杯stm32嵌入式开发板如图所示： ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70_pic_center]  
一、基本的硬件、软件连接问题以及编译问题：  
一、电脑显示USB无法识别stm32开发板，如下图所示  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70]\*\*  
![在这里插入图片描述][20200709114640258.png]  
原因是USB插反了：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70 1]  
正确连接应该连接上面那个CN2的口，如图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70 2]  
实验一：定时器中断实验（TIM2）  
1.TIM2是挂在APB1的，通过APB1总线下的使能来使能TIM2,调用函数是  
RCC\_APB1PeriphClockCmd(RCC\_APB1Periph\_TIM2,ENABLE);//TIM2时钟使能  
2.定时器结构初始化  
![在这里插入图片描述][20200806164803134.png]

TIM\_TimeBaseInit(TIM2,&TIM\_TimeBaseInitStruct);

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70_pic_center 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70 6]

实验三 GPIO口管脚  
GPIO口模拟iic时序，要用开漏输出(做温湿度传感器时候可以用推挽输出)。  
GPIO口推挽输出正常置高是3.3v,置0是0v。  
对于复用功能的GPIO模式怎么判断，查看中文参考手册p110.

四.串口的管脚定义  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70_pic_center 2]  
DB9公头的定义，母头的2.3就与这个相反  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70_pic_center 3]  
USART1\_IRQHandler(void)这是串口1的中断响应函数，当串口1发生中断，就会跳到该函数执行。中断函数的名字不能乱取，在startup\_stm32f10x\_md.s中可以找到。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70_pic_center 4]  
五、SYSTICK滴答定时器  
![在这里插入图片描述][20201204155346820.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDQ5NDIy_size_16_color_FFFFFF_t_70 7]  
每一毫秒进入滴答定时器中断一次。

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[20200709114640258.png]: /images/20230209/a1389c8a843f445ea6933efc22bc8386.png
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