Ignore parameter values out of range

[pnt325]

Correct sensor value has out of range #190

[Byter09]

Why not allow values below 10? My sensors regularly go below that. Maybe limit it to 0?

[pnt325]

@Byter09 Please check the issue #190 and add your comments at there.

[Byter09]

I mean I don't have to. Even that issue says 0 should be the lowest value for PM data.

[airgradienthq]

A few things:
Only negative PM values (below 0) need to be ignored. 0..10 are valid readings and should be allowed.

Also, if a value is outside the range, the value should be completely ignored.

So for example Temperature -100 should NOT return -40 but be ignored. This would apply to all checks.

[pnt325]

A few things: Only negative PM values (below 0) need to be ignored. 0..10 are valid readings and should be allowed.

Also, if a value is outside the range, the value should be completely ignored.

So for example Temperature -100 should NOT return -40 but be ignored. This would apply to all checks.

For this way we don't need to correct value in range, just need to verify it's valid or not before use(show on display or sync to cloud).

The correction method will be remove and replace check valid valid method.

bool utils::validTemperature(float value) {
  if (value >= VALID_TEMPERATURE_MIN && value <= VALID_TEMPERATURE_MAX) {
    return true;
  }
  return false;
}

@airgradienthq How do you think?

[airgradienthq]

@pnt325 yes I think that's how it should work.

[Byter09]

I know I was asked to review this, but I don't know internals. So from a basic look at it, it looks good to me. 😛