import serial #導(dǎo)入模塊

try:
    # 端口號(hào)，根據(jù)自己實(shí)際情況輸入，可以在設(shè)備管理器查看
    port = "COM6"
    # 串口波特率，根據(jù)自己實(shí)際情況輸入
    bps = 9600
    # 超時(shí)時(shí)間,None：永遠(yuǎn)等待操作，0為立即返回請(qǐng)求結(jié)果，其他值為等待超時(shí)時(shí)間(單位為秒）
    time = 5
    # 打開串口，并返回串口對(duì)象
    uart = serial.Serial(port, bps, timeout = time)

    # 串口發(fā)送一個(gè)字符串
    len = uart.write("hello world".encode('utf-8')) 
    print("send len: ", len)

    # 串口接收一個(gè)字符串
    str = ''
    for i in range(len):
        str += uart.read().decode("utf-8")
    print("receive data: ", str)

    # 關(guān)閉串口
    uart.close()

except Exception as result:
    print("******error******：", result)

data1 = "hello world"        # 字符串
data2 = b"hello world"       # bytes
data3 = "你好"               # 中文字符串
data4 = 0x0A                 # 整形(以16進(jìn)制表示)
data5 = [0x10, 0x11, 0x12]   # 列表/數(shù)組(以16進(jìn)制表示)

len = uart.write(data1.encode('utf-8'))         # 發(fā)送字符串"hello world"
len = uart.write(data2)                         # 發(fā)送字符串"hello world"
len = uart.write(data3.encode('utf-8'))         # 以u(píng)tf-8編碼方式發(fā)送字符串"你好"（6字節(jié)）
len = uart.write(data3.encode('gbk'))           # 以gbk編碼方式發(fā)送字符串"你好"（4字節(jié)）
len = uart.write(chr(data4.encode("utf-8"))     # 發(fā)送16進(jìn)制數(shù)據(jù)0x0A（1字節(jié)）
for x in data5:                                 # 遍歷列表/數(shù)組的所有元素并依次發(fā)送
    len = uart.write(chr(x).encode("utf-8")) 

str = uart.read(uart.in_waiting).decode("utf-8")   # 以字符串接收
str = uart.read().hex()                            # 以16進(jìn)制(hex)接收

while True:
    if uart.in_waiting:
        # str = uart.read(uart.in_waiting).decode("utf-8")   # 以字符串接收
        str = uart.read().hex()                            # 以16進(jìn)制(hex)接收
        print(str)                                         # 打印數(shù)據(jù)

import serial 
import serial.tools.list_ports

port_list = list(serial.tools.list_ports.comports())
print(port_list)
if len(port_list) == 0:
   print('無可用串口')
else:
    for i in range(0,len(port_list)):
        print(port_list[i])

# 導(dǎo)入模塊
import threading
import time
import serial
import serial.tools.list_ports

# 自定義變量
port = "COM6"  # 端口號(hào)，根據(jù)自己實(shí)際情況輸入，可以在設(shè)備管理器查看
bps = 9600     # 串口波特率，根據(jù)自己實(shí)際情況輸入
timeout = 5       # 超時(shí)時(shí)間,None：永遠(yuǎn)等待操作，0為立即返回請(qǐng)求結(jié)果，其他值為等待超時(shí)時(shí)間(單位為秒）
rxdata = ''    # 接收的數(shù)據(jù)

# 掃描端口
def check_uart_port():
    port_list = list(serial.tools.list_ports.comports())
    # print(port_list)
    if len(port_list) == 0:
        print('can not fine uart port')
        return False
    else:
        for i in range(0,len(port_list)):
            print(port_list[i])
    return True

# 打開串口
def open_uart(port, bps, timeout):
    try:
        # 打開串口，并返回串口對(duì)象
        uart = serial.Serial(port, bps, timeout=timeout)
        return uart
    except Exception as result:
        print("can not open uart")
        print(result)
        return False

# 發(fā)送數(shù)據(jù)
def uart_send_data(uart, txbuf):
    len = uart.write(txbuf.encode('utf-8'))  # 寫數(shù)據(jù)
    return len

# 接收數(shù)據(jù)
def uart_receive_data(uart):
    if uart.in_waiting:
        rxdata = uart.read(uart.in_waiting).decode("utf-8")   # 以字符串接收
        # rxdata = uart.read().hex()  # 以16進(jìn)制(hex)接收
        print(rxdata)  # 打印數(shù)據(jù)

# 關(guān)閉串口
def close_uart(uart):
    uart.close()

# 創(chuàng)建一個(gè)線程用來等待串口接收數(shù)據(jù)
class myThread (threading.Thread):   # 繼承父類threading.Thread
    def __init__(self, uart):
        threading.Thread.__init__(self)
        self.uart = uart
    def run(self):                   # 把要執(zhí)行的代碼寫到run函數(shù)里面 線程在創(chuàng)建后會(huì)直接運(yùn)行run函數(shù)
        while True:
            # print("thread_uart_receive")
            uart_receive_data(self.uart)  # 接收數(shù)據(jù)
            # time.sleep(0.01)

# 主函數(shù)
def main():
    # 掃描端口
    result = check_uart_port()
    if(result == False):
        return

    # 打開串口
    result = open_uart(port, bps, timeout)
    if (result == False):
        return
    else:
        uart1 = result

    # 創(chuàng)建一個(gè)線程用來接收串口數(shù)據(jù)
    thread_uart = myThread(uart1)
    thread_uart.start()

    while True:
        # 定時(shí)發(fā)送數(shù)據(jù)
        txbuf = "hello world"
        len = uart_send_data(uart1, txbuf)
        print("send len: ", len)
        time.sleep(1)

# 啟動(dòng)主函數(shù)
main()