BLUNO Programming and Communication with BLE- DFRobot Forum

2014-04-24 02:10:15 A function that allows us to retrieve the BLEs connected would be helpful too. visualxl

2014-04-24 01:38:26 "You can just code it so you don't have to do it manually."

Hmm.. Sorry, but what do you mean by that?

"Have you tried to switch from one device to another through AT commands?"

I only have one BLUNO. As such, I have not try yet.

Are you sure "AT+BIND" can switch between devices? I thought "AT+BIND" is like bluetooth pairing/linking?

Since we are at it, I would also like to suggest that there be a feature to allow us to request the UUID or set the UUID of the device.

Oh and I was wondering. If I bind more than 1 device, if I were to to request "AT+RSSI=?", which one will it refer to? visualxl

2014-04-24 01:04:59 You can just code it so you don't have to do it manually.
I understand a new function update will be coming shortly so you don't have to physically do it, and you can just code it.

Have you tried to switch from one device to another through AT commands?
I was thinking something like:
at+bind device address1
at+reset (for example, in case the re connection is not automatically done)
do device 1 task then switch
at+bind device address2
at+reset (for example, in case the re connection is not automatically done)

I'd like to try this. Have you tried?
Jose

2014-04-23 23:02:35 If I understand correctly, does that mean that if I were to keep track of the RSSI, I need to switch the BLUNO to "AT" mode all the time? visualxl

2014-04-23 22:37:20 [quote="Grey"]
Hello, sorry for the inconvenient.

It just like the AT command communication.
You send an AT command to it, and it replies some data.
For example, you send "AT+RSSI=?" to the bluno, it will answer you with a number in the Serial port, like "-057".

And the data analyzing and processing means you need let Arduino read it, store it and print it in LCD or anything else.
[/quote]

I see. I somewhat get what you mean but I still don't see that it is possible to store the response "-057".

Code: Select all

 void loop(){
  Serial.println("AT+NAME=?");
  while (Serial.available() > 0) {
    digitalWrite(ledBLE, OUTPUT);
    delay(150);
    digitalWrite(ledBLE, LOW);
    delay(150);
  }
}

If the switch is "NORM", the LED will not blink. If the switch is "AT", then the LED will blink.

In other words, from my understanding and observation, Serial.available() will always be lesser than 0 in "NORM" mode. So, in this case, how do I even store the response and print it to the Serial Monitor in this case? Or do I have to switch the BLUNO to "AT" mode all the time? visualxl

2014-04-23 22:37:20 [quote="Grey"]
Hello, sorry for the inconvenient.

It just like the AT command communication.
You send an AT command to it, and it replies some data.
For example, you send "AT+RSSI=?" to the bluno, it will answer you with a number in the Serial port, like "-057".

And the data analyzing and processing means you need let Arduino read it, store it and print it in LCD or anything else.
[/quote]

I see. I somewhat get what you mean but I still don't see that it is possible to store the response "-057".

Code: Select all

 void loop(){
  Serial.println("AT+NAME=?");
  while (Serial.available() > 0) {
    digitalWrite(ledBLE, OUTPUT);
    delay(150);
    digitalWrite(ledBLE, LOW);
    delay(150);
  }
}

If the switch is "NORM", the LED will not blink. If the switch is "AT", then the LED will blink.

In other words, from my understanding and observation, Serial.available() will always be lesser than 0 in "NORM" mode. So, in this case, how do I even store the response and print it to the Serial Monitor in this case? Or do I have to switch the BLUNO to "AT" mode all the time? visualxl

2014-04-23 22:09:33 Hello, sorry for the inconvenient.

It just like the AT command communication.
You send an AT command to it, and it replies some data.
For example, you send "AT+RSSI=?" to the bluno, it will answer you with a number in the Serial port, like "-057".

And the data analyzing and processing means you need let Arduino read it, store it and print it in LCD or anything else. Grey.CC

2014-04-23 20:06:24 Hey grey,

What do you mean by data analyser and processing? It does not answer my question on how to grab the reply?

Can you at least show me how to Serial.print() the reply? Or is that not possible? visualxl

2014-04-23 00:43:02 If you could set destination address, 3 modules also will work.

I mean you could try to bind the destination address with at command. When you want to connect another one, you could change the Destination address to the other one.

I haven't tried it before. In theory, it should be work, you could have a try first. Grey.CC

2014-04-22 19:35:48 Hello Sir,
Thank you for contacting our DFRobot forum.
1)
In the AT mode, MCU could connect with CC2540 directly, it means when you send the AT command to CC2540, you will get a character string as a reply. So what you need is the data analyzing and processing.
2)
With RSSI , you could know whether two device is close or not. but it won't be very accurate.
3)
I am sorry, BLUNO doesn't support multi-connection at the same time now. Central only could connect one peripheral at the same time. But I think you could change the connection destination address. but it will be very complicated. What is about 4 Bluno? Grey.CC

2014-04-22 07:07:27 Hi All,

I have a couple of issuess over here. Before that, I know how to configure the BLE through AT commands from the Serial Monitor.

1. I can configure the BLE from the sketch. But how do I grab the response returned by the AT command as shown below:

Code: Select all

  
void setup() {
    Serial.begin(115200);               //initial the Serial
    Serial.print("AT+NAME=BABYG\r\n"); //This works!
}
 
void loop() {
    Serial.print("AT+NAME=?\r\n"); //how to store the name returned by this command?
    Serial.print("AT+RSSI=?\r\n"); //how to store the RSSI returned by this command?
}

2. The BLE supplied with the BLUNO only support HID profile? Is there a way to enable or perhaps configure proximity profile?

3. If I have 3 BLUNOs. One is configured as CENTRAL. Another two is configured as PERIPHERAL. How do I make the CENTRAL keep track of the PERIPHERAL distances concurrently? Is it possible? The only think I can think of is keep track of both RSSI values. Even so, what if I were to add more PERIPHERAL, how do I keep all these distances/RSSI dynamically? visualxl


	void setup() {
	Serial.begin(115200); //initial the Serial
	Serial.print("AT+NAME=BABYG\r\n"); //This works!
	}

	void loop() {
	Serial.print("AT+NAME=?\r\n"); //how to store the name returned by this command?
	Serial.print("AT+RSSI=?\r\n"); //how to store the RSSI returned by this command?
	}

	void loop(){
	Serial.println("AT+NAME=?");
	while (Serial.available() > 0) {
	digitalWrite(ledBLE, OUTPUT);
	delay(150);
	digitalWrite(ledBLE, LOW);
	delay(150);
	}
	}