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sparkfun / SparkFun_BNO080_Arduino_Library

An Arduino Library for the BNO080 IMU combination triple axis accelerometer/gyro/magnetometer packaged with an ARM Cortex M0+ running powerful algorithms.
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How to avoid polling? #29

Closed vitorsotero closed 5 years ago

vitorsotero commented 5 years ago

Hi,

there is this sentence on examples from the library: "Use the interrupt pin on the BNO080 breakout to avoid polling."

I tried to connect the INTpin to GND, but the results didn't change. Do I have to modify some line of the library?

Thanks!

nseidle commented 5 years ago

You should not connect the INT pin to ground, you should connect the INT pin to your micro. When the INT pin on your micro goes low, you know there is new data available and you should request the new data from the BNO080.

DanieleSgroi commented 5 years ago

found that using i2c with interrup pin polling, I need to add "pinMode(_int, INPUT_PULLUP);"

just before "softReset();" inside "BNO080::begin" function, otherwise the code get stuck.

However this is not a clean interrupt management, in the end it still is a pin polling.

I'm working to convert it to proper ISR...

vitorsotero commented 5 years ago

found that using i2c with interrup pin polling, I need to add "pinMode(_int, INPUT_PULLUP);"

just before "softReset();" inside "BNO080::begin" function, otherwise the code get stuck.

However this is not a clean interrupt management, in the end it still is a pin polling.

I'm working to convert it to proper ISR...

Interesting...If you do, please reply here! I'd like to test!

BNO055 was a little easier to request two or more functions (i.e. linear acceleration, gyroscope and quaternion).