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jrowberg / i2cdevlib

I2C device library collection for AVR/Arduino or other C++-based MCUs
http://www.i2cdevlib.com
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MPU6050 - Wakeup Cycle Frequency #196

Open tony-gosu opened 9 years ago

tony-gosu commented 9 years ago

In the file MPU6050.h, line 417, the wakeup cycle frequency is defined as such:

define MPU6050_WAKE_FREQ_1P25 0x0

define MPU6050_WAKE_FREQ_2P5 0x1

define MPU6050_WAKE_FREQ_5 0x2

define MPU6050_WAKE_FREQ_10 0x3

But in the datasheet and the register sheet , the frequency is defined as

0 = 1.25Hz 1 = 5Hz 2 = 20Hz 3 = 40Hz

If I sit in a tight loop to see how often the accelerometer low power mode updates per this wake up frequency, the values match the datasheet and register sheet as described above, not what the library currently defines. Am I missing something or is this a bug that needs to be changed?

jrowberg commented 9 years ago

The register map that I originally built this code from was v2.0 from May of 2011. The may have changed this in the official release, on non-engineering-sample parts. If your observations match the updated doc, then the code should probably be changed.

storyinvisible commented 5 years ago

Hi, what should I do if I want to keep the frequency at 20 z?