BluetoothClient1.BytesReceived → if BluetoothClient1.ReceiveText = "SEND_SMS" → call Texting1.SendMessage phoneNumber "1234567890" message "Hello, this is a test SMS"
i would like transform this code for blocks
How is the Bluetooth text being sent?
Here is a simple BlueTooth text receiver sample, for single value per line:
You have to add your own testing of the message and SMS transmission.
I'm doing an arduino project with my colleagues. I'm going to explain a bit about my project, it's a help button, when the elderly person presses the button the application will do the part of sending the email (when the button is true). If you want, I'll give you the script so you can get an idea of what the app will look like.
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Configuring MIT App Inventor
Access MIT App Inventor:
Go to the MIT App Inventor website and log in with your Google account.Create a New Project:
Click on “Create New Project” and give your project a name, for example, “BluetoothSMS”.User Interface Design:
Drag and drop the necessary components onto the main screen:
BluetoothClient: To connect and communicate with the HC-05 module.
ListPicker: To list and select the Bluetooth device.
Button: To start the Bluetooth connection.
Label: To display information and status.
Texting: To send SMS.
The layout can be configured as follows:
A ListPicker to select the Bluetooth device.
A Button to connect to the Bluetooth module.
A Label to show connection status.
A Button to send SMS (there won't be a button to send the email).
A Texting component configured to send SMS.
Translated with DeepL.com (free version)
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Be sure to use println() at the end of each message to send from the sending device, to signal end of message.
Only use print() in the middle of a message.
Be sure not to println() in the middle of a message, or you will break it into two short messages and mess up the item count after you split the message in AI2.
Do not rely on timing for this, which is unreliable.
In the AI2 Designer, set the Delimiter attribute of the BlueTooth Client component to 10 to recognize the End of Line character.
Also, return data is not immediately available after sending a request,
you have to start a Clock Timer repeating and watch for its arrival in the Clock Timer event. The repeat rate of the Clock Timer should be faster than the transmission rate in the sending device, to not flood the AI2 buffers.
In your Clock Timer, you should check
Is the BlueTooth Client still Connected?
Is Bytes Available > 0?
IF Bytes Available > 0 THEN
set message var to BT.ReceiveText(-1)
This takes advantage of a special case in the ReceiveText block:
ReceiveText(numberOfBytes)
Receive text from the connected Bluetooth device. If numberOfBytes is less than 0, read until a delimiter byte value is received.
If you are sending multiple data values per message separated by | or comma, have your message split into a local or global variable for inspection before trying to select list items from it. Test if (length of list(split list result) >= expected list length) before doing any select list item operations, to avoid taking a long walk on a short pier. This bulletproofing is necessary in case your sending device sneaks in some commentary messages with the data values.
Some people send temperature and humidity in separate messages with distinctive prefixes like "t:" (for temperature) and "h:" (for humidity).
(That's YAML format.)
The AI2 Charts component can recognize these and graph them. See Bluetooth Client Polling Rate - #12 by ABG
To receive YAML format messages, test if the incoming message contains ':' . If true, split it at ':' into a list variable, and find the prefix in item 1 and the value in item 2.