Resources gets reset on api refresh

1

hello to all,
i have read the coding guide and i have searched on the forum about that.
i use a input/output resource to output a value in the cloud so other devices can see the value and change the value.
but when i refresh api or simply return in the api page the value gets reset to 0.0 (it’s a float).
how can i solve this problem?

2

Hi, let us see your code to see how is the “thing” defined.

Best,

3

first of all thanks for your support.
this is the code

void setup() {
	cella2SetT = preferences.getFloat("cella2set", 4.0); //read data fromm EEPROM
	Serial.print("Temperatura Set cella 2: "); //show data
	Serial.println(cella2SetT); //show data
	thing["Cella 2 set"] >> outputValue(cella2SetT);//send the value on the cloud
	
	thing["Cella 2 set"] << [](pson& in){
	        cella2SetT = in; // transfer (i think) the value in a local variable
	        preferences.putFloat("cella2set", cella2SetT); //save data in EEPROM
	        Serial.print("Nuovo set cella 2 : "); Serial.println(cella2SetT); //show data
	};
	
...
...
}
4

You have it defined as exclusive input “thing”, something like this should work as input/output:

 thing["Cella 2 set"] << [](pson & in) {
    if (in.is_empty()) in = cella2SetT;
    else cella2SetT= in;
 };

or its resumed form:

 thing["Cella 2 set"] << [](pson & in) {
    (in.is_empty()) ? in = cella2SetT : cella2SetT= in;
 };

I focused just on thinger “thing” definition, you may add the code you want into the “thing” cycle.

Both should work, let me know how it goes.

5

it works fine,
therefore an input resource can send also an output.

without your help it would have taken me a lot longer.
thanks

i have another question.
i open a new topic so somebody can find it if it need

6

No worries my friend, that’s why we are here, to help each other.

Regards,