Question

我写了一个小程序来在RasPi和Arduino之间通信。我可以完美地将消息从RasPi发送到Arduino。 Arduino将读取传入的消息，并做出适当的响应。当RasPi正在读取Arduino消息时，会发生问题。

arduino发送“ 2，2，'A'，'B'，'C'，（crc）“。我可以通过在rs485网络上附加第二个arduino来确认这一点。 Python将此视为乱码，并给了我以下信息：

b'\xd5'
b'i'
b'\x8a'
b'j'
b'z'
b'\xf6'
b'T'
b'{'
b'\xf6'
b'\x8c'
b'\xe2'
b'\xfe'

Python代码（不是完整的代码，而是相关的内容）：

data = bytearray()
info = ord('A')
data.append(info)

sendMsg(2, len(data), data)
while(True):
  inByte = rs.read()
  print(inByte)

Answer 1

您需要解码数据。

尝试

var myArray = [ [ 'Procare Fitted Hospital Bed Bottom Sheet, Ivory',
    'DT4098',
    'Demo',
    null,
    12300,
    2],
  [ 'Essential Medical Supply Deluxe Complete Hospital Bed Set',
    'ERT665',
    'Demo',
    null,
    11790,
    2],
  [ 'Dr. Morepen St 04 Acoustic Stethoscope',
    'DT4098',
    'Demo',
    null,
    21237,
    2],
  [ 'CosmoCare KLife 5 Para Patient Monitor',
    'YTT690',
    'Demo',
    null,
    11000,
    2],
  [ 'CosmoCare KLife 5 Para Patient Monitor',
    'YTT690',
    'Demo',
    null,
    11000,
    2],
  [ 'CosmoCare KLife 5 Para Patient Monitor',
    'YTT690',
    'Demo',
    null,
    11000,
    2],
  [ 'CosmoCare KLife 5 Para Patient Monitor',
    'YTT690',
    'Demo',
    null,
    11000,
    2],
  [ 'Dr. Morepen St 04 Acoustic Stethoscope',
    'DT4098',
    'Demo',
    null,
    21237,
    2],
  [ 'Essential Medical Supply Deluxe Complete Hospital Bed Set',
    'ERT665',
    'Demo',
    null,
    11790,
    2],
  [ 'Essential Medical Supply Deluxe Complete Hospital Bed Set',
    'ERT665',
    'Demo',
    null,
    11790,
    2] ];
   let duplicates = [];
    let output = myArray.reduce((t, i) => {
      if(duplicates.includes(i[1])) {
        let myArray = t.filter((item) => item[1] == i[1])[0];
        myArray[5] += i[5];
        t = t.filter((item) => item[1] != i[1]);
        i = myArray;
      } else {
        duplicates.push(i[1]);
      }
      t.push(i);      
      return t;
    }, []);
    
    console.log(output);

在rs485上从Arduino读取数据时出现问题

1 个答案: