网站备案后名称怎么改,搭建什么平台,秀色直播怎么下载,绵阳网站建设推广1.FSMP1A开发板进行串口通信实验#xff1a; 功能#xff1a;电脑输入LED_ON点亮扩展版LED灯#xff0c;输入LED_OFF熄灭扩展版LED灯 代码实现#xff1a;
uart4.c
#include uart4.h
//串口初始化
void uart4_init(){//使能UART4外设时钟RCC-MP_APB1ENSE… 1.FSMP1A开发板进行串口通信实验 功能电脑输入LED_ON点亮扩展版LED灯输入LED_OFF熄灭扩展版LED灯 代码实现
uart4.c
#include uart4.h
//串口初始化
void uart4_init(){//使能UART4外设时钟RCC-MP_APB1ENSETR |(0X116);//使能GPIOB/GPIOG外设时钟RCC-MP_AHB4ENSETR |(0X11);RCC-MP_AHB4ENSETR |(0X16);//设置PB2/PG11复用为UART4功能//PB2GPIOB-MODER (~(0X34));//先清零GPIOB-MODER |(0X24);//设置成复用模式GPIOB-AFRL (~(0XF8));//先清零GPIOB-AFRL |(0X88);//设置成UART4-RX模式//PG11GPIOG-MODER (~(0X322));//先清零GPIOG-MODER |(0X222);//设置成复用模式GPIOG-AFRH (~(0xF12));//先清零GPIOG-AFRH |(0X612);//设置成UART4-TX模式//禁用串口UE0因为其他相关设置是在UE0情况下设置的USART4-CR1 (~(0X10));//设置8bit数据位USART4-CR1 (~(0X112));USART4-CR1 (~(0X128));//设置没有校验位USART4-CR1 (~(0X110));//设置不分频USART4-PRESC (~(0XF0));//设置16倍过采样USART4-CR1 (~(0X115));//设置1bit停止位USART4-CR2 (~(0X312));//设置115200波特率USART4-BRR0X22B;//使能发送器USART4-CR1 |(0X13);//使能接收器USART4-CR1 |(0X12);//使能串口USART4-CR1 |0X1;
}//封装单个字符发送函数
void putchar(char ch){//判断发送数据寄存器是否为空不为空则等待while(!(USART4-ISR(0X17)));//为空向发送数据寄存器写入数据USART4-TDRch;//等待发送完成while(!(USART4-ISR(0x16)));
}//单个字符的接收
char getchar(){//判断接收数据寄存器是否有数据//没有数据则等待while(!(USART4-ISR(0X15)));//有数据就将数据读取返回放置内存中变量return USART4-RDR;
}//封装字符串的输入
void gets(char *s)
{//循环调用单个字符接收//等待读取到回车键\r字符串接收while(1){*sgetchar();if((*s)\r){break;}putchar(*s);//让输入的字符串回显到电脑串口工具s;}*s\0;putchar(\n);putchar(\r);
}//字符串输出
void puts(char *s)
{//循环调用单个字符的发送//直到遇到\0结束while(*s){putchar(*s);s;}putchar(\0);//最后末尾发送一个换行一个回车putchar(\n);putchar(\r);
}//自定义strcmp函数
int my_strcmp(const char *des,const char *src){while(*des*src){if(*des\0||*src\0){break;}des;src;}return *des-*src;
}
uart.h
#ifndef __UART4__H__
#define __UART4_H__
#include stm32mp1xx_gpio.h
#include stm32mp1xx_rcc.h
#include stm32mp1xx_uart.h
void uart4_init();
void putchar(char ch);
char getchar();
void gets(char *s);
void puts(char *s);
int my_strcmp(const char *des,const char *src);#endif
led.c
#include led.h
//初始化LED1-3所对应的GPIO引脚以及使能
void led_init(){//GPIO初始化//将RCC_MP_AHB4ENSETR寄存器第[5:4]位设置为1使能GPIOE和F外设时钟RCC-MP_AHB4ENSETR |(0X34);//1.GPIOE_MODER[21:20]设置为01PE10管教为输出模式GPIOE-MODER (~(0x320));//先清零GPIOE-MODER |(0x120); //再置位//1.GPIOF_MODER[21:20]设置为01PF10管教为输出模式GPIOF-MODER (~(0x320));//先清零GPIOF-MODER |(0x120); //再置位//1.GPIOE_MODER[17:16]设置为01PE8管教为输出模式GPIOE-MODER (~(0x316));//先清零GPIOE-MODER |(0x116); //再置位//2.GPIOE_OTYPER[10]设置为0PE10管脚推挽输出GPIOE-OTYPER (~(0x110));//先清零//2.GPIOF_OTYPER[10]设置为0PF10管脚推挽输出GPIOF-OTYPER (~(0x110));//先清零//2.GPIOE_OTYPER[8]设置为0PE8管脚推挽输出GPIOE-OTYPER (~(0x18));//先清零//3.GPIOE_OSPEEDR[21:20]设置为00PE10管脚为低速输出GPIOE-OSPEEDR (~(0x320));//先清零//3.GPIOF_OSPEEDR[21:20]设置为00PF10管脚为低速输出GPIOF-OSPEEDR (~(0x320));//先清零//3.GPIOE_OSPEEDR[17:16]设置为00PE8管脚为低速输出GPIOE-OSPEEDR (~(0x316));//先清零//4.GPIOE_PUPDR[21:20]设置为00PE10管脚无上拉下拉电阻GPIOE-PUPDR (~(0x320));//先清零//4.GPIOF_PUPDR[21:20]设置为00PF10管脚无上拉下拉电阻GPIOF-PUPDR (~(0x320));//先清零//4.GPIOE_PUPDR[17:16]设置为00PE8管脚无上拉下拉电阻GPIOE-PUPDR (~(0x316));//先清零}
//对引脚和哪盏灯控制参数1确定哪盏灯参数2确定开灯为1关灯为0
void led_ctl(int which,int cmd){switch(which){case 1:if(cmd0)//关灯GPIOE-ODR (~(0x110));else if(cmd1)//开灯GPIOE-ODR |(0x110); break;case 2:if(cmd0)//关灯GPIOF-ODR (~(0x110));else if(cmd1)//开灯GPIOF-ODR |(0x110); break;case 3:if(cmd0)//关灯GPIOE-ODR (~(0x18));else if(cmd1)//开灯GPIOE-ODR |(0x18); break;}
}led.h
#ifndef __LED__
#define __LED__
#include stm32mp1xx_gpio.h
#include stm32mp1xx_rcc.h
#include stm32mp1xx_uart.h
/* typedef struct{ */
/* unsigned int MODER; */
/* unsigned int OTYPER; */
/* unsigned int OSPEEDR; */
/* unsigned int PUPDR; */
/* unsigned int IDR; */
/* unsigned int ODR; */
/* unsigned int BSRR; */
/* }gpio_t; */
/* */
/* #define GPIOE (*(gpio_t*)0x50006000) */
/* #define GPIOF (*(gpio_t*)0x50007000) */
/* #define RCC (*(unsigned int*)0x50000A28) */void led_init();void led_ctl(int which,int cmd);#endif
main.c
#include uart4.h
#include led.hint main()
{uart4_init();//uart4串口初始化led_init();//led1-3初始化/* char ch; *//* //电脑端发送数据接收数据 *//* while(1){ *//* //读取电脑发送的字符 *//* chgetchar(); *//* //将字符1后返回给电脑 *//* putchar(ch1); *//* putchar(\n);//换行 *//* putchar(\r);//回车 *//* *//* } */char buf[128];//定义一个字符数组while(1){gets(buf);puts(buf);if(my_strcmp(buf,LED1_ON)0){led_ctl(1,1);}if(my_strcmp(buf,LED1_OFF)0){led_ctl(1,0); }if(my_strcmp(buf,LED2_ON)0){led_ctl(2,1);}if(my_strcmp(buf,LED2_OFF)0){led_ctl(2,0); }if(my_strcmp(buf,LED3_ON)0){led_ctl(3,1);}if(my_strcmp(buf,LED3_OFF)0){led_ctl(3,0); }}return 0;
}2.stm32U5开发板进行串口通信实验 功能电脑输入LED_ON点亮扩展版LED灯输入LED_OFF熄灭扩展版LED灯 main.c
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();/* Configure the System Power */SystemPower_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_ICACHE_Init();MX_USART1_UART_Init();/* USER CODE BEGIN 2 *//* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */char buf[32];//保存串口数据收发的容器while (1){memset(buf,0,sizeof(buf));//进行数组清空HAL_UART_Receive(huart1,(uint8_t *)buf,30,10000); //阻塞接收 if(strcmp(buf,LED1_ON)0){//打开led1HAL_GPIO_WritePin(GPIOC,GPIO_PIN_4,GPIO_PIN_SET);}if(strcmp(buf,LED3_ON)0){//打开led3HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_SET);}if(strcmp(buf,LED_CYTLE_ON)0){//循环打开HAL_GPIO_WritePin(GPIOC,GPIO_PIN_4,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_RESET);HAL_Delay(1000);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_4,GPIO_PIN_RESET);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_SET);HAL_Delay(1000);}if(strcmp(buf,LED1_OFF)0){//关闭led1HAL_GPIO_WritePin(GPIOC,GPIO_PIN_4,GPIO_PIN_RESET);}if(strcmp(buf,LED3_OFF)0){//关闭led3HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_RESET);}if(strcmp(buf,LED_CYTLE_OFF)0){//关闭循环HAL_GPIO_WritePin(GPIOC,GPIO_PIN_4,GPIO_PIN_RESET);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_RESET);}if(strcmp(buf,FAN_ON)0){//打开风扇HAL_GPIO_WritePin(GPIOC,GPIO_PIN_6,GPIO_PIN_SET);}if(strcmp(buf,FAN_OFF)0){//关闭风扇HAL_GPIO_WritePin(GPIOC,GPIO_PIN_6,GPIO_PIN_RESET);}if(strcmp(buf,FENGMING_ON)0){//打开蜂鸣器HAL_GPIO_WritePin(GPIOC,GPIO_PIN_7,GPIO_PIN_SET);}if(strcmp(buf,FENGMING_OFF)0){//关闭蜂鸣器HAL_GPIO_WritePin(GPIOC,GPIO_PIN_7,GPIO_PIN_RESET);}HAL_UART_Transmit(huart1,(uint8_t *)buf,sizeof(buf),5);/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}
