ESP32 Bluetooth send integer

MIT App Inventor Help
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#1

Hello

I am trying to send an integer (or other typ of non 8bit number) via BT to my Android phone. But I was not successful.

Here is my ESP32 Code (shortened):

int number = 205;

void setup(void) {

SerialBT.begin("ESP32_Sensor");

}

void loop() {

SerialBT.write(number);

delay(10);

}

That is my App code:

image
image1370×726 83.9 KB

I tried it with 1,2 and 4 ByteNumber, but no luck.
I have also tried it with SerialBT.print() but regardless of what I tried I always get a wrong number. There I have tried it with the textblock as well

Has anyone an Idea?

Thanks

#2

Knowing what number arrived could help diagnose the problem.

#3

Use ReceiveUnsigned1Byte blocks instead of ReceiveSigned1Byte...

You send the number 205 and it is already a negative number if you receive with a sign.

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