爪哇 - 如何通过通过串行端口多个参数的Arduino万 [英] java - how to pass multiple parameters over serial port to Arduino mega
问题描述
通过我的Java程序。我想一个字节的值传递到Arduino巨型点亮LED
而且在同一时间，我想为一个字符串值传递到Arduino要显示在LCD上。
我怎样才能获得单独从以上的java程序2输入Arduino的，在不同的过程中使用它们的Arduino里面..
下面是Arduino的code
LiquidCrystal液晶（12，11，10，9,8，7）;
INT操作;无效设置（）{lcd.begin（16，2）;
Serial.begin（9600）;
Serial1.begin（9600）;
Serial2.begin（9600）;pinMode（3，输出）;
pinMode（2，输出）;}诠释计数= 0;
空隙环（）{// LCD启动
如果（Serial.available（））{
//稍等一下，整个消息的到达
延迟（50）;
//清屏
lcd.clear（）;
延迟（10）;
//读取所有可用字符
而（Serial.available（）大于0）{
//显示每个字符液晶
lcd.write（Serial.read（））;
}
}
// LCD结束 // LED指示灯闪烁启动
如果（Serial.available（）大于0）
延迟（10）;
{
操作= Serial.read（）;
} 如果（操作=='2'）
{ digitalWrite（2，低）;
digitalWrite（3，高）;
延迟（50）;
digitalWrite（3，低）;
延迟（50）;
} 如果（操作=='1'）
{ digitalWrite（3，低）;
digitalWrite（2，高）;
延迟（50）;
digitalWrite（2，低）;
延迟（50）;
}
// LED指示灯闪烁结束 //收到RFID标签号
如果（Serial1.available（））{
INT X = Serial1.read（）;
Serial1.print（X）;
}如果（Serial2.available（））{
INT X = Serial2.read（）;
Serial1.print（X）;
}}
下面是Java code发送数据
code发送数字1到Arduino的
字符串BUF =1;
CHAR BUF2 [] = buf.toCharArray（）;
output.write（（字节）BUF2 [0]）;
code发送字符串液晶显示
output.write（Hellow世界，这是从Java字符串.getBytes（））;
当我运行这些codeS单独运作良好，不受任何干扰。但是当我做他们两个在一起......有时值1或2显示在液晶..和LED闪烁不列入正常。如何从Java获得两个输入的Arduino并分别处理它们Arduino的？
里面您可以连接的数据。
所以，如果你是路过Hello和200为2项，然后在发送前将它们合并到Arduino的和发送你好200％，并在Arduino的内部分裂％
Through my java program. i want to pass a byte value to the Arduino mega to blink an Led and also at the same time i want to pass a string value to the Arduino to be displayed in the lcd.
How can I separately get above 2 inputs from the java program to Arduino and use them in different processes inside Arduino..
Below is the arduino code
LiquidCrystal lcd (12, 11, 10, 9, 8, 7);
int operation;
void setup() {
lcd.begin(16, 2);
Serial.begin(9600);
Serial1.begin(9600);
Serial2.begin(9600);
pinMode(3, OUTPUT);
pinMode(2, OUTPUT);
}
int count = 0;
void loop() {
//LCD start
if (Serial.available()) {
// wait a bit for the entire message to arrive
delay(50);
// clear the screen
lcd.clear();
delay(10);
// read all the available characters
while (Serial.available() > 0) {
// display each character to the LCD
lcd.write(Serial.read());
}
}
//LCD end
//LED Blink start
if (Serial.available() > 0)
delay(10);
{
operation = Serial.read();
}
if(operation == '2')
{
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
delay(50);
digitalWrite(3, LOW);
delay(50);
}
if(operation == '1')
{
digitalWrite(3, LOW);
digitalWrite(2, HIGH);
delay(50);
digitalWrite(2, LOW);
delay(50);
}
//LED Blink end
// Recieve rfid tag numbers
if(Serial1.available()) {
int x = Serial1.read();
Serial1.print(x);
}
if(Serial2.available()) {
int x = Serial2.read();
Serial1.print(x);
}
}
Below is the Java code to send data
Code to send number 1 to Arduino
String buf = "1";
char buf2[] = buf.toCharArray();
output.write((byte)buf2[0]);
Code to send string to display in lcd
output.write("Hellow world. this is a String from java".getBytes());
When I run these codes separately it works well without any interference.. but when I do them both together... sometimes value 1 or 2 is displayed in the lcd.. and led doesnot blink properly . how to get two inputs from java to arduino and process them separately inside the Arduino?
You could concatenate the data. So, if you are passing "Hello" and "200" as 2 items then combine them before the send to Arduino and send "Hello%200" and split on the % inside the Arduino.
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