Linh Dao

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8 years, 5 months ago.

How do i use ble.gattServer().onDataWritten?

I'm using UARTService class of BLE library in my app. I have a problem with ble.gattServer().onDataWritten().

I added this line in my main() function so that it will be notify of onDataWritten event:

ble.gattServer().onDataWritten(&onDataWritten);

my onDataWritten handler is:

void onDataWritten(const GattWriteCallbackParams * params)
{
    receivedCommandEvent =true;
}

in the while loop of main function:

while (true) {
        ....
        if(receivedCommandEvent)
        {
            while(int command = uart->_getc() != EOF)
            {
                if(command == 1)
                {
                    //turn on something.
                }
                else if (command == 0)
                {
                    //turn off something.
                }
            }
            receivedCommandEvent = false;
        }
        ble.waitForEvent();
    }

but this seem a wrong way to handle onDataWritten, i got error value for command variable in every run. What is the right way to handle onDataWritten then?

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