#include <SoftwareSerial.h>
int led = 13;
int bluetoothTx = 2;
int bluetoothRx = 3;
SoftwareSerial bluetooth(bluetoothTx, bluetoothRx);
int baudrate[8] ={4800,9600,14400,19200,28800,38400,57600,115200};
int i = 1;
void setup() {
Serial.begin(9600);
bluetooth.begin(9600);
while(!Serial){}
Serial.write("AT sent");
delay(500);
bluetooth.write("AT+NAME?");
delay(500);
while (bluetooth.available()) {
Serial.write(bluetooth.read());
}
delay(100);
Serial.println("");
bluetooth.write("AT+POWE3");
delay(500);
while(bluetooth.available())
{
Serial.write(bluetooth.read());
}
delay(100);
Serial.println("");
delay(500);
bluetooth.write("AT+CHAR?");
delay(500);
while (bluetooth.available()) {
Serial.write(bluetooth.read());
}
delay(100);
Serial.println("");
delay(500);
bluetooth.write("AT+NAMEFlightline"); //Check Status
delay(500);
while (bluetooth.available()) {
Serial.write((char)bluetooth.read());
}
Serial.println("");
bluetooth.write("AT+CHAR0x2901"); //add charicteristic
delay(500);
while (bluetooth.available()) {
Serial.write(bluetooth.read());
}
Serial.println("");
bluetooth.write("AT+RELI0");
delay(500);
while (bluetooth.available()) {
Serial.write(bluetooth.read());
}
Serial.println("");
bluetooth.write("AT+SHOW1");
delay(100);
while (bluetooth.available()) {
Serial.write(bluetooth.read());
}
Serial.println("");
pinMode(led,OUTPUT);
digitalWrite(led,HIGH);
}
void testAllBaudRates(){
for(int j=0; j<8; j++)
{
bluetooth.begin(baudrate[j]);
delay(100);
Serial.println("boud rate " + String(baudrate[j],DEC) +" i-> "+String(j,DEC));
// Serial.println("");
bluetooth.write("AT");
delay(500);
while (bluetooth.available()) {
Serial.write(bluetooth.read());
Serial.println();
}
delay(100);
}
}
// and now a few blinks of the LED,
// so that we know the program is running
void loop()
{
//Read from bluetooth and write to usb serial
while(bluetooth.available())
{
char toSend = (char)bluetooth.read();
if(toSend == 'x'){
digitalWrite(led,HIGH);
Serial.println("set high");
bluetooth.write("RXOK");
}else if(toSend == 'y'){
digitalWrite(led,LOW);
Serial.println("set low");
bluetooth.write("RXOK");
}
Serial.print(toSend);
}
//Read from usb serial to bluetooth
while(Serial.available())
{
char toSend = (char)Serial.read();
bluetooth.write(toSend);
Serial.print(toSend);
}
}
看看我上面的草图,我有几件事要指出我浪费了时间。
确保你有线路
while(!Serial){}
或者你可能有一个工作屏蔽,但由于串行监视器没有准备好而错过了响应。
请记住,如果蓝牙模块连接到设备,您将不会收到来自串行监视器的命令的响应。当灯停止闪烁时,它已连接到设备。
如果你运行这个草图,你应该得到这个输出
AT sent
OK+Set:3
OK+Get:0x2901 <- this may be blank the first time you run it
OK+Set:Flightline
OK+Set:0x2901
OK+Set:0
OK+Set:1
可以在这里找到最全面的 AT 命令列表
[All the AT commands and a good explanation][1]
您需要像我在这里所做的那样在设备的特性
bluetooth.write("AT+CHAR?");
或者你会发现它可以连接到 iOS 和 Android
如果您要连接到 Android,请使用 BluetoothLE 类而不是蓝牙类。