【jetsonnano】jetsonnano串口通信与esp8266 cutecom和minicom使用

骑猪看日落 2023-01-14 03:58 325阅读 0赞

用urb线。esp8266队友负责 我只进行上位机发信号

上实验图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMzU4NTc0_size_16_color_FFFFFF_t_70]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMzU4NTc0_size_16_color_FFFFFF_t_70 1]  
发送1成功之后亮灯。（下位机已经写好）  
usb口直接供电。板子里面有ch340芯片所以无需再usb转ttl

上代码：

> > > > import serial as ser  
> > > > se=ser.Serial("/dev/ttyUSB0",115200,timeout=1)  
> > > > se.write(“1”.encode())  
> > > > 1
> 
> > > se.write(“0”.encode())  
> > > 1
> 
> > > se.write(“1”.encode())  
> > > 1

import serial as ser
    se=ser.Serial("/dev/ttyTHS1",115200,timeout=1)
    se.write("1".encode())

命令：

**ls -l /dev/ttyUSB0**  
crw-rw---- 1 root dialout 188, 0 4月 20 02:37 /dev/ttyUSB0

**ls -l /dev/ttyS**\*  
crw–w---- 1 root tty 4, 64 4月 19 13:56 /dev/ttyS0  
crw-rw---- 1 root dialout 4, 65 4月 19 13:57 /dev/ttyS1  
crw-rw---- 1 root dialout 4, 66 4月 19 13:57 /dev/ttyS2  
crw-rw---- 1 root dialout 4, 67 4月 19 13:57 /dev/ttyS3  
**ls -l /dev/ttyTH**\*  
crwxrwxrwx 1 root tty 238, 1 4月 20 02:30 /dev/ttyTHS1  
crw-rw---- 1 root dialout 238, 2 4月 19 13:56 /dev/ttyTHS2  
**dmesg | grep ttyS**\*  
\[ 1.044023\] console \[ttyS0\] disabled  
\[ 1.044120\] 70006000.serial: ttyS0 at MMIO 0x70006000 (irq = 63, base\_baud = 25500000) is a Tegra  
\[ 1.044230\] console \[ttyS0\] enabled  
\[ 1.045183\] 70006040.serial: ttyTHS1 at MMIO 0x70006040 (irq = 64, base\_baud = 0) is a TEGRA\_UART  
\[ 1.045561\] 70006200.serial: ttyTHS2 at MMIO 0x70006200 (irq = 65, base\_baud = 0) is a TEGRA\_UART  
\[ 6.106957\] usb 1-2.4: ch341-uart converter now attached to ttyUSB0  
\[ 36.176037\] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0  
\[ 85.318975\] usb 1-2.4: ch341-uart converter now attached to ttyUSB0  
\[ 398.416093\] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0  
\[ 398.667390\] usb 1-2.4: ch341-uart converter now attached to ttyUSB0  
\[ 495.440008\] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0  
\[ 3356.740326\] usb 1-2.4: ch341-uart converter now attached to ttyUSB0  
\[12633.424098\] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0

## cutecom和minicom ##

：  
sudo apt-get install cutecom

sudo cutecom

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMzU4NTc0_size_16_color_FFFFFF_t_70_pic_center]

sudo apt-get install minicom  
sudo minicom

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMzU4NTc0_size_16_color_FFFFFF_t_70_pic_center 1]

## 附：UART Demo ##

import time
    import serial
    
    print("UART Demonstration Program")
    print("NVIDIA Jetson Nano Developer Kit")
    
    
    serial_port = serial.Serial(
        port="/dev/ttyTHS1",
        baudrate=115200,
        bytesize=serial.EIGHTBITS,
        parity=serial.PARITY_NONE,
        stopbits=serial.STOPBITS_ONE,
    )
    # Wait a second to let the port initialize
    time.sleep(1)
    
    try:
        # Send a simple header
        serial_port.write("UART Demonstration Program\r\n".encode())
        serial_port.write("NVIDIA Jetson Nano Developer Kit\r\n".encode())
        while True:
            if serial_port.inWaiting() > 0:
                data = serial_port.read()
                print(data)
                serial_port.write(data)
                # if we get a carriage return, add a line feed too
                # \r is a carriage return; \n is a line feed
                # This is to help the tty program on the other end 
                # Windows is \r\n for carriage return, line feed
                # Macintosh and Linux use \n
                if data == "\r".encode():
                    # For Windows boxen on the other end
                    serial_port.write("\n".encode())
    
    
    except KeyboardInterrupt:
        print("Exiting Program")
    
    except Exception as exception_error:
        print("Error occurred. Exiting Program")
        print("Error: " + str(exception_error))
    
    finally:
        serial_port.close()
        pass

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