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USB虚拟串口- #include "sys.h"
- #include "delay.h"
- #include "usart.h"
- #include "led.h"
- #include "lcd.h"
- #include "usb_lib.h"
- #include "hw_config.h"
- #include "usb_pwr.h"
-
- int main(void)
- {
- u16 t;
- u16 len;
- u16 times=0;
- u8 usbstatus=0;
- delay_init(); //延时函数初始化
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2:2位抢占优先级,2位响应优先级
- uart_init(115200); //串口初始化为115200
- LED_Init(); //初始化与LED连接的硬件接口
- LCD_Init(); //初始化LCD
- POINT_COLOR=RED; //设置字体为红色
- LCD_ShowString(30,50,200,16,16,"WarShip STM32");
- LCD_ShowString(30,70,200,16,16,"USB Virtual USART TEST");
- LCD_ShowString(30,90,200,16,16,"ATOM@ALIENTEK");
- LCD_ShowString(30,110,200,16,16,"2015/1/28");
- LCD_ShowString(30,130,200,16,16,"USB Connecting...");//提示USB开始连接
- delay_ms(1800);
- USB_Port_Set(0); //USB先断开
- delay_ms(700);
- USB_Port_Set(1); //USB再次连接
- Set_USBClock();
- USB_Interrupts_Config();
- USB_Init();
- while(1)
- {
- if(usbstatus!=bDeviceState)//USB连接状态发生了改变.
- {
- usbstatus=bDeviceState;//记录新的状态
- if(usbstatus==CONFIGURED)
- {
- POINT_COLOR=BLUE;
- LCD_ShowString(30,130,200,16,16,"USB Connected ");//提示USB连接成功
- LED1=0;//DS1亮
- }else
- {
- POINT_COLOR=RED;
- LCD_ShowString(30,130,200,16,16,"USB disConnected ");//提示USB断开
- LED1=1;//DS1灭
- }
- }
- if(USB_USART_RX_STA&0x8000)
- {
- len=USB_USART_RX_STA&0x3FFF;//得到此次接收到的数据长度
- usb_printf("\r\n您发送的消息为:%d\r\n\r\n",len);
- for(t=0;t<len;t++)
- {
- USB_USART_SendData(USB_USART_RX_BUF[t]);//以字节方式,发送给USB
- }
- usb_printf("\r\n\r\n");//插入换行
- USB_USART_RX_STA=0;
- }else
- {
- times++;
- if(times%5000==0)
- {
- usb_printf("\r\n战舰STM32开发板USB虚拟串口实验\r\n");
- usb_printf("正点原子@ALIENTEK\r\n\r\n");
- }
- if(times%200==0)usb_printf("请输入数据,以回车键结束\r\n");
- if(times%30==0)LED0=!LED0;//闪烁LED,提示系统正在运行.
- delay_ms(10);
- }
- }
- }
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