【求助】Arduino软串口出现乱码

maxliu

刚刚接触软串口，用的IDE里面自带的例程文件做的测试。代码如下
/*
  Software serial multple serial test

Receives from the hardware serial, sends to software serial.
Receives from software serial, sends to hardware serial.

The circuit:
* RX is digital pin 10 (connect to TX of other device)
* TX is digital pin 11 (connect to RX of other device)

Note:
Not all pins on the Mega and Mega 2560 support change interrupts,
so only the following can be used for RX:
10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69

Not all pins on the Leonardo support change interrupts,
so only the following can be used for RX:
8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).

created back in the mists of time
modified 25 May 2012
by Tom Igoe
based on Mikal Hart's example

This example code is in the public domain.

*/
#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup()  
{
  // Open serial communications and wait for port to open:
  Serial.begin(57600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }


  Serial.println("Goodnight moon!");

  // set the data rate for the SoftwareSerial port
  mySerial.begin(4800);
  mySerial.println("Hello, world?");
}

void loop() // run over and over
{
  if (mySerial.available())
    Serial.write(mySerial.read());
  if (Serial.available())
    mySerial.write(Serial.read());
}
但是软串口反馈的一直是乱码，硬串口正常

ioiomi

焊接有问题？

Super169

用 serial port 接到 pin 10, 11 嗎?

Serial.begin(57600);

mySerial.begin(4800);

baud rate 不相同.......

maxliu

Super169 发表于 2014-7-10 17:20
用 serial port 接到 pin 10, 11 嗎?

Serial.begin(57600);

57600是对于硬串口的，4800是对于软串口的。这样调节baud rate时候可以接收到不同串口的数据

darkorigin

有好好的硬件串口为啥还要弄软件串口哦~~~~
需要多串口可以选择1280或者2560多好。

maxliu

darkorigin 发表于 2014-7-11 09:23
有好好的硬件串口为啥还要弄软件串口哦~~~~
需要多串口可以选择1280或者2560多好。

板子太大了

Super169

maxliu 发表于 2014-7-11 09:23
57600是对于硬串口的，4800是对于软串口的。这样调节baud rate时候可以接收到不同串口的数据

因為不太清楚你的設定, 所以我先問了你是否把 serial (即 port 0,1) 接 port 10,11 測試.

那你是用兩塊板測試嗎?  還是一塊板 port 10 接 port 11?

yanglang00

我么遇到同样问题，难道是板子焊的有问题？

wdjkzym

yanglang00 发表于 2015-5-7 19:34
我么遇到同样问题，难道是板子焊的有问题？

俩串口都用9600