问题描述
当我尝试在 Arduino 上读取多行串行数据时,我使用以下成语:
When I am trying to read multiple lines of serial data on an Arduino, I use the following idiom:
String message = "";
while (Serial.available()){
message = message + serial.read()
}
在 Arduino C 中,Serial.available()
返回可从串行缓冲区读取的字节数(参见 文档).python中Serial.available()
的等价物是什么?
In Arduino C, Serial.available()
returns the number of bytes available to be read from the serial buffer (See Docs). What is the equivalent of Serial.available()
in python?
例如,如果我需要读取多行串行数据,我希望使用以下代码:
For example, if I need to read multiple lines of serial data I would expect to ues the following code:
import serial
ser = serial.Serial('/dev/ttyACM0', 9600, timeout=0.050)
...
while ser.available():
print ser.readline()
推荐答案
属性 Serial.in_waiting
返回接收缓冲区中的字节数".
The property Serial.in_waiting
returns "the number of bytes in the receive buffer".
这似乎相当于 Serial.available()
的描述:已经到达并存储在串行接收缓冲区中的字节数."
This seems to be the equivalent of Serial.available()
's description: "the number of bytes ... that's already arrived and stored in the serial receive buffer."
试试:
import serial
ser = serial.Serial('/dev/ttyACM0', 9600, timeout=0.050)
...
while ser.in_waiting: # Or: while ser.inWaiting():
print ser.readline()
对于 pyserial 3.0 之前的版本,使用 .inWaiting()
.要确定您的 pyserial 版本,请执行以下操作:
For versions prior to pyserial 3.0, use .inWaiting()
. To determine your pyserial version, do this:
import serial
print(serial.__version__)
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