dfrobot/blunobasicdemo

The basic demo for bluno

blunobasicdemo's Issues

Where is the BLE Firmware Source Code?

Looking for the source -- I saw the links from this page https://www.dfrobot.com/wiki/index.php/Bluno_SKU:DFR0267#FAQ but I do not see the source for the BLE Firmware, only binary blobs.

Interfacing bluno beetle with raspberry pi board

Hello Experts,
I would like to interface the bluno beetle board with raspberry pi board.
Can you please point out some arduino examples to add BLE attributes and/or how we can send the switch status to raspberry pi or other BLE receiver system.
Thanks for the help.

Secure communications?

I am sure it is possible to enable a sort of secure communications, which would only allow a specific device to communicate with the Bluno based on something like a MAC address, but I am not sure how it could be implemented, and I am not sure if that would require it's own project. However there does seem to be interest in this topic. I didn't see any reference to this topic here in the project nor did I see any info on the wiki of the Bluno.

Is it possible to lower the communication latency ?

Hello,

I've been using the Bluno board successfully with an Android app based on this demo.
I'm using sensor input from the Bluno to trigger sounds in this app.

My problem is : it seems that there is a constant latency due to the BLE protocol, around a few hundreds of miliseconds, which makes the Bluno unsuitable for this particular application.
I'm wondering if there is a way to increase the priority of BLE communication with the Bluno.
I think it's possible because some bluetooth devices like mice and keyboards have a much lower communication latency.
Does anyone know if it is even possible, and if so, where to look at to improve this behaviour ?
I'd like to reach a more or less constant latency of around 20ms, maximum 50ms (this is what is needed to preserve a sensation of immersion in real-time applications involving gesture and sound feedback).

Thanks for any pointers,
Joseph

onSerialReceived not taking complete Serial Data

Hi!

This is regarding the onSerialReceive(String theString) function, in MainActivity.

I am using a Bluno Beetle to take readings from a PPG sensor and sending the comma separated raw values over bluetooth to an Android App.

However, if I send 20 values (by appending them in a comma separated string), I receive only 5 values in one execution of the function onSerialReceive.

For eg.

If I send the following from Bluno Beetle:

"231,511,231,524,231,522,231,525,231,513,506,230,509,230,515,522,231,525,231,513"

I receive the following theString values in 4 consecutive executions of the function:

"231,511,231,524,231"
",522,231,525,231,513"
",506,230,509,230,515"
",522,231,525,231,513"

I do not receive the complete string in a go.

Debugging this is a little urgent, so I request you to kindly reply soon. Let me know if you need more information to help me out with this.

Thanks!

Minor log mistake.

Just fix a little mistake in a log: mSerialPortCharacteristic instead
of mCommandPortCharacteristic.

BlunoLibrary.java (480):
System.out.println("mSerialPortCharacteristic "+mSerialPortCharacteristic.getUuid().toString());
->
System.out.println("mCommandPortCharacteristic "+mCommandPortCharacteristic.getUuid().toString());

Alternative App Suggestion

Hi, I've used this app before for connecting my Bluno Beetle, but it doesn't seem to be actively maintained now.

I have created a Bluetooth controller App that should work with Bluno devices and has a lot more features.
https://github.com/jerameel/bacon

If would love to help to add this to your wiki page as an alternative for the demo

Cant' connect with the classical way

When I want to connect to the Bluno nano my phone ask me the password which seems to be "000000" ("0" x 6) but I can't change the password via AT commands and can't use an app I've designed to work with the HC-05. Are we forced to use your app?

BLE only works when Serial monitor opens

I am using the Arduino IDE and am experiencing the following problem .

• I have the bluno beetle wirelessly connected to a HM-10 Bluetooth module which is connected to an Arduino nano.
• I am sending a ‘1’ and a '0' through serial.write function from the beetle to the to the HM-10 in the main loop.
• The HM-10 acknowledges the receiving ‘1’ when the serial monitor of the bluno beetle is open or open then closed which turns on and off an LED.

But the main problem I am having is if I do not open the serial monitor to the Beetle when first connected it will not receive the ‘1’.

I hope this is clear as I am quite new to this and it is very hard to describe through text.
I can upload my HM-10 code if needed
Github_sketch.txt

Android app not work when set targetSdkVersion 23

Just the Bluetooth lib not work rightly, cant scan successful.

How to add a new BLE service to Bluno nano?

I tried below, seems doesn't work

include <SPI.h>

include <BLEPeripheral.h>

define BLE_REQ 10

define BLE_RDY 2

define BLE_RST 9

// LED and button pin

define LED_PIN 3

define BUTTON_PIN 4

// create peripheral instance, see pinouts above
BLEPeripheral blePeripheral = BLEPeripheral(BLE_REQ, BLE_RDY, BLE_RST);

// create service
BLEService ledService = BLEService("19b10010e8f2537e4f6cd104768a1214");

// create switch and button characteristic
BLECharCharacteristic switchCharacteristic = BLECharCharacteristic("19b10011e8f2537e4f6cd104768a1214", BLERead | BLEWrite);
BLECharCharacteristic buttonCharacteristic = BLECharCharacteristic("19b10012e8f2537e4f6cd104768a1214", BLERead | BLENotify);

void setup() {
Serial.begin(115200);

if defined (AVR_ATmega32U4)

delay(5000); //5 seconds delay for enabling to see the start up comments on the serial board

endif

// set LED pin to output mode, button pin to input mode
pinMode(LED_PIN, OUTPUT);
pinMode(BUTTON_PIN, INPUT);

// set advertised local name and service UUID
blePeripheral.setLocalName("LED Switch");
blePeripheral.setAdvertisedServiceUuid(ledService.uuid());

// add service and characteristics
blePeripheral.addAttribute(ledService);
blePeripheral.addAttribute(switchCharacteristic);
blePeripheral.addAttribute(buttonCharacteristic);

// begin initialization
blePeripheral.begin();

Serial.println(F("BLE LED Switch Peripheral"));
}

void loop() {
// poll peripheral
blePeripheral.poll();

// read the current button pin state
char buttonValue = digitalRead(BUTTON_PIN);

// has the value changed since the last read
bool buttonChanged = (buttonCharacteristic.value() != buttonValue);

if (buttonChanged) {
// button state changed, update characteristics
switchCharacteristic.setValue(buttonValue);
buttonCharacteristic.setValue(buttonValue);
}

if (switchCharacteristic.written() || buttonChanged) {
// update LED, either central has written to characteristic or button state has changed
if (switchCharacteristic.value()) {
Serial.println(F("LED on"));
digitalWrite(LED_PIN, HIGH);
} else {
Serial.println(F("LED off"));
digitalWrite(LED_PIN, LOW);
}
}
}

Android sdk version update

The current sdk version is no longer supported.

This should be updated to atleast version 26.

Please see #20 to fix this.

missing data(some characters) at a high display rate

Hi guys I meet a problem that the android app display always miss data(some characters) when i using a 50Hz rate. But there is no matter at a low display rate (like 1Hz). in addition, It is OK on the PC serial monitor.
what happened and what should i do?

Writing to the Bluno : Null error

I want to add to my android project a ble bluno connection ( target sdk : 26, min sdk : 21, compile sdk : 28). I followed the demo but i had a problem with the scan (obselete?) so i found a solution, i connected directly with a paired device using the "connect" function. But now i want to write something to the bluno using the "serialSend" function and it says :
"serialSend: Attempt to invoke virtual method 'boolean android.bluetooth.BluetoothGattCharacteristic.setValue(java.lang.String)' on a null object reference"

my SerialSend function :
` public void serialSend(String theString){

	if (mConnectionState == connectionStateEnum.isConnected) {

		try{

			mSCharacteristic.setValue(theString);
			mBluetoothLeService.writeCharacteristic(mSCharacteristic);

		}catch (Exception e){

			Log.d(TAG, "serialSend: "+e.getMessage());

		}

	}

}`

The characteristic i want to write in is null and the BroadcastReceiver is never used, in my opinion the characteristic is instanced in this receiver. the BroadcastReceiver is called after the broadcastUpdate but i enter well in the 'update' function and dont in the receiver.
private void broadcastUpdate(final String action) { final Intent intent = new Intent(action.toLowerCase()); sendBroadcast(intent); }

Is it because i dont used the scan to connect my bluno or there is a problem with version or there is an other problem?

Waiting for an answer, thank you.