Placeholder for various perfomance metrics - Githubissues

jkougoulos / lowpower-i2c-sensor

Another ATMega328PB based wireless sensor, designed for low power consumption

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Placeholder for various perfomance metrics #15

Open jkougoulos opened 6 years ago

jkougoulos commented 6 years ago

44-45ms runtime per cycle as of now: Sequence:

13.5ms for taking measurement
13-14ms calculations/compensation & I2C retrieval (Adafruit library with enhancements for faster I2C)
5ms ? msg preparation (itoa/ltoa based, sprintf was ~10ms)
4-5 ms SPI I/O
4-5 ms wreless transmit
1ms LED on

Cheap multimeter measurements

640uA when CPU active (but idle / in delay() but rest devices in sleep (probably cpu burns 400uA)

Idle current cannot be measured by this cheap thing, getting 0uA (perhaps we are under 1uA)

Tested Bosch library (measure & calculate), without any optimization . see: https://github.com/jkougoulos/BME280_driver/blob/master/BME280sensor.ino Perhaps need to test using atmel studio, or disassembly.

30ms Float mode (strange result, need to check why float is faster!)
~39 ms int32/int64