How can I loop like Arduino Loop()

General
#1

Hi. I new in mongoose normally I develop on Particle.io it’s 100% Arduino compatible. And am not C expert I afraid to make clash on our production firmware.

This is my question..

  1. How can I loop like Arduino Loop() I should used SW timer or HW timer ?
  2. if I have many sensor to read I should used many timer or single timer ?
  3. Do I have to free ram or anything I should concern about memory management ?
  4. If anyone open for consultancy service please leave an email.
#2

There is no “loop” like arduino - mOS is event driven.

What you can do is look at the timer callback feature.
If you wanted as tight a loop as possible you could call your “loop” function once it was complete, otherwise if you wanted a time based loop you can use the “MGOS_TIMER_REPEAT” flag.

mgos_set_timer(0, 0, loop, NULL);    // call 'loop' immediately
mgos_set_timer(1000, MGOS_TIMER_REPEAT, loop, NULL);    // call 'loop' every 1000 ms
#3

Thanks you for your reply…
So if I have multiple sensor to read which way are the best way to do

  1. have multiple timer to call individual method
  2. have 1 timer inside timer_cb I call multiple method in each method may do like this for set difference cycle time read

void readSensorA() {
if(mills()-lastSensorACall > 1000) {
…
}
}

#4

It depends. If the interval when you read the sensors is the same for all of them, you can use 1 timer

mgos_set_timer(sensors_read_interval, MGOS_TIMER_REPEAT, sensors_read_cb, NULL);

otherwise you can group the readings for the same interval in several timers.

#5

I agree, my biggest hurdle coming from Arduino was trying to change my though process of how my program should execute.

Best to think about what actions/events that would cause your project to do different things. Then you can start to think about what sensor readings might trigger those events etc.

#6

OK. so used multiple timer to do this. Thanks you guys