blckdmp

Found the old version of the datasheet with more interrupt information. Much more useful than the current one!! Thanks to Jeff for the detailed register map also. Think I can muddle my way through this now. Jon Old datasheet for MPU 60X0 http://www.cdiweb.com/datasheets/invensense/PS-MPU-6000A.pdf

Anyone have any luck setting up freefall interrupts for the 6050? Looks like they've omitted (deleted?) all information about it in the register map and datasheet. From looking through Jeff's library and seaching the web, I've called the following functions from the MPU6050 library, but am getting pretty iffy free fall detection, more like crappy tap detection at best. Also, I see definitions for ...FF_COUNT_BIT and ...FF_COUNT_LENGTH values, but have no idea what writing to those registers does. Any thoughts? Thanks, Jon accelgyro.setInterruptMode(1); // active low accelgyro.setInterruptDrive(1); // open drain accelgyro.setInterruptLatch(1); // latch until read accelgyro.setInterruptLatchClear(1); // clear on any read accelgyro.setIntDataReadyEnabled(false); // trigger interrupt on data ready accelgyro.setIntFreefallEnabled(1); accelgyro.setFreefallDetectionThreshold(0x10); //I've tried lots of different values here accelgyro.setFreefallDetectionDuration(0x05); // and here!! The whole code for my basic trial sketch is: #include <Wire.h> #include <MPU6050.h> #include <I2Cdev.h> int pin = 13; volatile int state = LOW; MPU6050 accelgyro; // Declare the instanced of the MPU6050 void setup() { Wire.begin(); Serial.begin(9600); pinMode(pin, OUTPUT); attachInterrupt(1, blink, RISING); accelgyro.setInterruptMode(1); // active low accelgyro.setInterruptDrive(1); // open drain accelgyro.setInterruptLatch(1); // latch until read accelgyro.setInterruptLatchClear(1); // clear on any read accelgyro.setIntDataReadyEnabled(false); // trigger interrupt on data ready //Free Fall interrupt accelgyro.setIntFreefallEnabled(1); accelgyro.setFreefallDetectionThreshold(0x10); accelgyro.setFreefallDetectionDuration(0x05); } void loop() { } void blink() { state = !state; digitalWrite(pin, state); Serial.println(" Free fall Detected"); }