235 lines
5.7 KiB
TeX
235 lines
5.7 KiB
TeX
\documentclass[全部作业]{subfiles}
|
||
|
||
\begin{document}
|
||
|
||
\date{2024年10月29日}
|
||
\begin{frame}
|
||
%\maketitle
|
||
\titlepage
|
||
\end{frame}
|
||
|
||
\begin{frame}
|
||
\frametitle{目录}
|
||
\tableofcontents[hideallsubsections]
|
||
\end{frame}
|
||
|
||
\section{第二次作业}
|
||
|
||
\subsection{准备}
|
||
\begin{frame}[fragile]
|
||
将实验一的代码复制一份,并将exp1改名为exp2:
|
||
\vspace{1em}
|
||
|
||
\begin{minipage}[H]{0.3\linewidth}
|
||
\begin{minted}[linenos=false]{text}
|
||
exp1
|
||
│ .mxproject
|
||
│ exp1.ioc
|
||
│
|
||
├─Core
|
||
│
|
||
├─Drivers
|
||
│
|
||
└─MDK-ARM
|
||
exp1.uvprojx
|
||
startup_stm32g473xx.s
|
||
\end{minted}
|
||
\end{minipage}
|
||
{\Huge$\longrightarrow$}
|
||
\begin{minipage}[H]{0.3\linewidth}
|
||
\begin{minted}[linenos=false]{text}
|
||
exp2
|
||
│ .mxproject
|
||
│ exp2.ioc
|
||
│
|
||
├─Core
|
||
│
|
||
├─Drivers
|
||
│
|
||
└─MDK-ARM
|
||
exp2.uvprojx
|
||
startup_stm32g473xx.s
|
||
\end{minted}
|
||
\end{minipage}
|
||
\vspace{1em}
|
||
|
||
需要改文件夹名、.ioc、.uvprojx这三个地方。
|
||
\end{frame}
|
||
|
||
\begin{frame}
|
||
打开.uvprojx文件,修改调试器:
|
||
\includegraphics{imgs/2024-10-29-11-36-58.png}
|
||
\vspace{1em}
|
||
|
||
\includegraphics[width=1\linewidth]{imgs/2024-10-29-11-35-44.png}
|
||
\end{frame}
|
||
|
||
\begin{frame}
|
||
修改调试设置,把reset and run打勾,就不需要手动按重置按钮了。
|
||
\includegraphics[width=1\linewidth]{imgs/2024-10-29-14-54-11.png}
|
||
\end{frame}
|
||
|
||
\subsection{端口修改}
|
||
\begin{frame}
|
||
这样设置端口,点击生成代码。
|
||
\includegraphics[width=1\linewidth]{imgs/2024-10-29-16-44-16.png}
|
||
\end{frame}
|
||
|
||
\begin{frame}
|
||
将STM32核心板JP1的PA0~PA7与系统底板跑马灯控制端JP21相连。
|
||
|
||
\includegraphics[width=0.3\linewidth]{imgs/IMG_20241029_204905_1.jpg}
|
||
\includegraphics[width=0.3\linewidth]{imgs/IMG_20241029_205023.jpg}
|
||
\end{frame}
|
||
|
||
\subsection{代码修改}
|
||
\begin{frame}[fragile]
|
||
main.c:
|
||
\begin{multicols}{2}
|
||
\begin{minted}[firstnumber=62]{C}
|
||
/**
|
||
* @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 */
|
||
uint8_t FlashFlag = 0;
|
||
uint16_t nShift = 0x0001;
|
||
uint8_t i = 0;
|
||
/* 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();
|
||
/* USER CODE BEGIN 2 */
|
||
FlashLeds_GPIO_Port->ODR &= 0xffff;
|
||
/* USER CODE END 2 */
|
||
|
||
\end{minted}
|
||
\end{multicols}
|
||
\end{frame}
|
||
|
||
\begin{frame}[fragile]
|
||
main.c:
|
||
\begin{multicols}{2}
|
||
\begin{minted}[firstnumber=last]{C}
|
||
/* Infinite loop */
|
||
/* USER CODE BEGIN WHILE */
|
||
while (1)
|
||
{
|
||
/* USER CODE END WHILE */
|
||
|
||
/* USER CODE BEGIN 3 */
|
||
if (sSysTickTimer.bTimeOk) {
|
||
sSysTickTimer.bTimeOk = 0;
|
||
HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
|
||
|
||
HAL_GPIO_WritePin(FlashLeds_GPIO_Port, nShift, GPIO_PIN_SET);
|
||
|
||
|
||
// FlashLeds_GPIO_Port->ODR &= 0xFF00;
|
||
// FlashLeds_GPIO_Port->ODR |= (~nShift) & 0x00FF;
|
||
|
||
if (i < 7)
|
||
nShift <<= 1;
|
||
else
|
||
nShift >>= 1;
|
||
|
||
i++;
|
||
|
||
if (i >= 14) {
|
||
i = 0;
|
||
nShift = 0x0001;
|
||
}
|
||
|
||
HAL_GPIO_WritePin(FlashLeds_GPIO_Port, nShift, GPIO_PIN_RESET);
|
||
|
||
// if (FlashFlag != 0) {
|
||
|
||
// }
|
||
}
|
||
}
|
||
/* USER CODE END 3 */
|
||
}
|
||
\end{minted}
|
||
\end{multicols}
|
||
\end{frame}
|
||
|
||
\subsection{改进}
|
||
\begin{frame}[fragile]
|
||
目前的闪烁频率较慢,可以修改部分代码使灯闪烁得更快。
|
||
在variable.h中增加10毫秒计数和100毫秒标志位:
|
||
\begin{minted}[firstnumber=9]{C}
|
||
typedef struct {
|
||
uint8_t mMilSecCount; // 毫秒计数
|
||
uint8_t bTenMilSecOk; // 10毫秒标志位
|
||
uint8_t mTenMilSecCount; // 10毫秒计数
|
||
uint8_t bHundredMilSecOk; // 100毫秒标志位
|
||
uint8_t mTimeCount; // 秒计数
|
||
uint8_t bTimeOk; // 秒标志位
|
||
} stSysTickTimer;
|
||
\end{minted}
|
||
\end{frame}
|
||
|
||
\begin{frame}[fragile]
|
||
相应地,在 \mintinline{C}{SysTick_Handler()} 中也需要在100毫秒标志位时设置相应标志。
|
||
\begin{minted}[firstnumber=192]{C}
|
||
if (++sSysTickTimer.mMilSecCount >= 10) {
|
||
sSysTickTimer.mMilSecCount = 0;
|
||
sSysTickTimer.bTenMilSecOk = 1;
|
||
if (++sSysTickTimer.mTenMilSecCount >= 10) {
|
||
sSysTickTimer.mTenMilSecCount = 0;
|
||
sSysTickTimer.bHundredMilSecOk = 1;
|
||
if (++sSysTickTimer.mTimeCount >= 10) {
|
||
sSysTickTimer.mTimeCount = 0;
|
||
sSysTickTimer.bTimeOk = 1;
|
||
}
|
||
}
|
||
}
|
||
\end{minted}
|
||
\end{frame}
|
||
|
||
\begin{frame}[fragile]
|
||
在 \mintinline{C}{main.c} 中在100毫秒标志为1时进行流水灯的操作(时钟滴答仍然在1秒标志位为1时操作)。
|
||
\begin{minted}[firstnumber=103]{C}
|
||
/* USER CODE BEGIN 3 */
|
||
if (sSysTickTimer.bTimeOk) {
|
||
sSysTickTimer.bTimeOk = 0;
|
||
HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
|
||
}
|
||
if (sSysTickTimer.bHundredMilSecOk) {
|
||
sSysTickTimer.bHundredMilSecOk = 0;
|
||
HAL_GPIO_WritePin(FlashLeds_GPIO_Port, nShift, GPIO_PIN_SET);
|
||
...
|
||
}
|
||
\end{minted}
|
||
\end{frame}
|
||
|
||
\subsection{实验结果}
|
||
|
||
\begin{frame}
|
||
每次只有一个灯亮,从最左边的灯亮向右移动,直到最右边的灯亮,再向左移动,直到最左边的灯亮。
|
||
|
||
\includegraphics[width=0.5\linewidth]{imgs/IMG_20241029_205440.jpg}
|
||
|
||
完整视频可以查看:\url{https://gitea.librastalker.top/423A35C7/STM32CubeMX-Keil_uVision5}
|
||
\end{frame}
|
||
|
||
\end{document} |