At what frequency can I make function calls to my Spark Core? [Solved]

[Carsten4207]

I was doing the same thing for my HVAC Motor Controller here:

HVAC Motor Controller

I upgraded my HVAC’s blower motor from a standard PSC motor (typically found in cheaper HVAC’s) with a ECM motor which is more efficient and also gives you speed control. The motor I purchased and installed is a Genteq Evergreen IM: http://www.genteqmotors.com/products/genteq/evergreen-im/ This motor is hooked up almost the same way as the old motor except for it gives you an additional 5 wires (common, low, low-medium, medium, high) which you can use for speed control. These speed control w…

Basically for each possible HVAC state (15 total), I was calling a function through the Particle API which would read a EEPROM value. It worked, but there was a delay while all 15 variables where read.

Because I am picky, I wanted a faster response. So what I did was created a Particle Variable which contained a STRING. This STRING was basically all of my EEPROM values (that I needed) put together. Now with a single call to the Particle API's, I can get all states.

// Global
char speedSettings[50] = "";

// In Setup()
Spark.variable("getspeed", speedSettings, STRING);

void postSpeedSettings() {
    
    // Clears out previous data
    for(uint8_t i=0; i<50; i++) {
       speedSettings[i] = 0; 
    }
    
    
    for(uint8_t i=0; i<16; i++) {
        int data = 0;
        data = EEPROM.read(i);
        sprintf( speedSettings, "%s%d ", speedSettings, data);
       
    } 
}

Hope this helps.