I need to get temperature readings much slower, like one measurement in 10 minutes, than default 1Hz. Main idea is to save battery even futher.
I thought this has been asked earlier and searched in forum, but could’t find any similar. So what parameters to change? I have understood that packet sending interval parameters are in here bluetooth_application_config.h and sensor reading interval parameters here main.c?
But what parameters exactly?
Hello,
After taking one measurement per 10 seconds the standby current and self-discharge of battery begin to dominate the consumption. Because getting a single broadcast is not guaranteed it’s good to a faster interval than actually needed on receiving end, on poor conditions the packet loss might be 95 % so at 1 minute interval you’d end up getting update once per 20 minutes on average.
The best way to change the interval would be to override https://github.com/ruuvi/ruuvi.firmware.c/blob/ba564b6e19fc5bd1598852a64b0ef4da19f14060/src/application_config/application_mode_default.h#L30, in long-life mode defined at https://github.com/ruuvi/ruuvi.firmware.c/blob/master/src/application_config/application_mode_longlife.h. The long-life variant isn’t currently implemented, but a pull request would be welcome. https://github.com/ruuvi/ruuvi.firmware.c/blob/master/src/application_config/application_mode_debug.h shows an example on how to do the overrides.