seeed-studio / accelerometer_mma7660 Goto Github PK

Unsure why this is the case. Even if I am moving the Accelerometer around such that it has no reason to go to sleep, the output stops after a random amount of time. Currently the sensor is attached to an Arduino Nano.

See:

• https://vilimpoc.org/media/grove-freeze-1.mp4
• https://vilimpoc.org/media/grove-freeze-2.mp4
• https://vilimpoc.org/media/grove-freeze-3.mp4

This is a Fantastic library for the MMA7660. I was attempting to enable the interrupts Register but was having Difficulty setting that by the Wire LIB. Is there a function that can change the interrupt Register to trigger a 1 for the various trigger modes.

Orientation Change When FBINT, PLINT = 1
Shake When SHINTX, SHINTY, SHINTZ = 1
Tap or Tilt When PDINT = 1
Auto-Wake/Sleep When ASINT = 1
X, Y, Z Data Update When GINT = 1

In the file MMA7660.cpp there are a number of issues with Wire.requestFrom().

The Wire.requestFrom() should not have Wire.beginTransmission() or Wire.endTransmission().
This in in the funtion MMA7660::read.

There is no need to empty a buffer or stream before using Wire.requestFrom(). When the Wire.requestFrom() returns, the receive buffer in the Wire library does not contain old data.
This is in the function MMA7660::getXYZ, MMA7660::getAcceleration, MMA7660::getAllData.

There is no need for a timeout. The Wire.requestFrom() waits until the complete I2C transaction has finished. The Wire.read() after that, only reads data from a receive buffer in the Wire library.
This is in the function MMA7660:getXYZ, MMA7660:getAcceleration,.