连接到设备时更改pySerial中的波特率？

Question

我正在尝试为一个名为uLCD32-pt的LCD设备编写一个脚本,问题是您需要以波特率9600连接它,并且为了获得更高的波特率,您必须连接它,发送更改波特率命令,然后以新设置的波特率发送新命令.在绘制像素时,我的液晶显示器显得非常慢,我知道它因为波特率,所以在连接到设备后,他们有什么方法可以改变波特率？到目前为止,这是我的代码？

import serial
import time

#Connect to uLCD32-pt with autobaud
ser = serial.Serial(
    port='/dev/ttyUSB0', 
    baudrate=9600, 
    timeout=1,
    parity=serial.PARITY_NONE,
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS
)
ser.write("U")


while(True):
    #15 x white pixels
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0001)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#1
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0002)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#2
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0003)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#3
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0004)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#4
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0005)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#5
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0006)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#6
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0007)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#7
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0008)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#8
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0009)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#9
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x000A)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#10
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x000B)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#11
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x000C)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#12
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x000D)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#13
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x000E)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#14
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x000F)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#15
    ser.write(chr(0x0050)+chr(0x0000)+chr(0x0010)+chr(0x0000)+chr(0x000A)+chr(0x00FF)+chr(0x00FF))#16

Answer 1

在文档中,波特率属性的描述说:

读取或写入当前波特率设置.

所以我希望这条线能够工作:

ser.baudrate = 115200

Answer 2

如果setBaudrate端口已经打开,您可以调用它进行一些检查并重新配置端口.

ser.setBaudrate(115200)