Send text by BLE

[IngF]

I'm sending data from my phone to the device using nRF Connect app for android as follows 

uint8_t SoporteBLE::enviaTiempoEspera()
{
uint8_t tiempoEspera;
if(Bluefruit.connected()){
if (TiempoEspera.read8()) {
tiempoEspera = (uint8_t) TiempoEspera.read8();
delay(250);
}else{
tiempoEspera = 0;
}

}
return tiempoEspera;
}

It works fine, but I need to send text. I tried this, but don´t work

char * SoporteBLE::enviaSentido()
{
char * sentido;
if(Bluefruit.connected()){
if (Sentido.read16()) {
sentido = (char *) Sentido.read16();
delay(250);
}else{
sentido = 0;
}
}
return sentido;
}

What can i do for solve this problem?

[awneil]

How to properly post source code:

[IngF]

Thanks for the suggest.

Can you help me with the problem sending text by BLE?

[awneil]

Please post the code legibly, then I'll look at it.

Also, please give more detail on, "don´t work"

• What were you expecting to happen?
• What is actually happening?
• What testing / debugging / investigation have you done to find the problem?

http://www.catb.org/esr/faqs/smart-questions.html#code

Have you looked at the Nordic UART Service (NUS):

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/ble_sdk_app_nus_eval.html

[IngF]

This code works with data of numerical type (values between 0 and 255)

uint8_t SoporteBLE::enviaTiempoEspera()
{
    uint8_t tiempoEspera;
    if(Bluefruit.connected()){
        if (TiempoEspera.read8()) {
            tiempoEspera = (uint8_t) TiempoEspera.read8();
            delay(250);
        }else{
            tiempoEspera = 0;
        }
    }
    return tiempoEspera;
}

But i need to send data of text type, String or char*, I'm using BLECharacteristic library, I tried with read64 function, but whe I try to send text, the module doesn't receive any data, if during configuratio of charcteristics I modifiy this value to a higher value, the module receives unreadable ASCII characters

Sentido.setFixedLen(1); 

  

[awneil]

IngF said:

 I'm using BLECharacteristic library

I have no idea what that is. It's not a Nordic thing, is it?

Have you contacted the author for support?

As noted above, Nordic's UART Service (NUS) can do what you require.