我是arduino项目的新成员。我想请你帮忙。我从(http://imall.iteadstudio.com/development-platform/arduino/shields/im130704001.html)为Arduino买了一个BLE Shield。他们使用Hm-10蓝牙模块(http://www.jnhuamao.cn/bluetooth.asp?ID=1)制作了这个屏蔽。 Itead Studio没有使用此屏蔽的示例代码。我不知道如何编程或从Arduino发送AT命令。
我在数据表(ftp://imall.iteadstudio.com/Shield/IM130704001_ITEAD_BLE_Shield/DS_IM130704001_ITEAD_BLE_Shield.pdf)上阅读了“AT命令”,我尝试使用此代码(http://arduino.cc/en/Reference/SoftwareSerial)从arduino向BLE shield发送“AT命令”但我只收到了命令回来。
这里有人使用过这款HM-10蓝牙模块吗?
我需要一些arduino草图来寻求帮助!
答案 0 :(得分:2)
#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);
}
}
看看上面的草图,我有一些事情要指出我浪费时间。
确保您拥有
行while(!Serial){}
或者你可能会得到一个有效的屏蔽,但由于串口监视器还没有准备好,所以会错过响应。
请记住,如果串口监视器连接到设备,则不会从蓝牙模块获得响应。当指示灯停止闪烁时,它会连接到设备。
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
最全面的AT命令列表可以在这里找到
[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上使用
bluetooth.write("AT+CHAR?");
或者您会发现它可以连接到iOS和Android
如果您要连接到Android,请使用蓝牙级别而不是蓝牙级别。
答案 1 :(得分:1)
您可以使用带有波特率自动检测的this sketch来控制您的HM-10。这是Apploader project的一部分,允许通过BLE上传到Arduino板。
答案 2 :(得分:0)
这也有点晚了,但是请尝试以下代码,如果你发送它“AT”它应该给你一个“OK”:
#include <SoftwareSerial.h>
int bluetoothTx = 2; // TX-O pin of bluetooth mate, Arduino D2
int bluetoothRx = 3; // RX-I pin of bluetooth mate, Arduino D3
SoftwareSerial bluetooth(bluetoothTx, bluetoothRx);
void setup()
{
Serial.begin(9600); // Begin the serial monitor at 9600bps
bluetooth.begin(115200); // The Bluetooth Mate defaults to 115200bps
delay(100); // Short delay, wait for the Mate to send back CMD
bluetooth.println("U,9600,N"); // Temporarily Change the baudrate to 9600, no parity
// 115200 can be too fast at times for NewSoftSerial to relay the data reliably
bluetooth.begin(9600); // Start bluetooth serial at 9600
}
void loop()
{
if(bluetooth.available()) // If the bluetooth sent any characters
{
// Send any characters the bluetooth prints to the serial monitor
Serial.print((char)bluetooth.read());
}
if(Serial.available()) // If stuff was typed in the serial monitor
{
// Send any characters the Serial monitor prints to the bluetooth
bluetooth.print((char)Serial.read());
}
// and loop forever and ever!
}