H3LIS331DL Data Ready Interrupt is not triggering

[Kattinti Siva Krishna]

Posted on February 13, 2018 at 12:54

Hi All,

I am trying to understand configuration of H3LIS331DL sensor with Data Ready Interrupt.

As per my previous posts, I understood Turn On-Time should be given after Configuring the Control Register 1.

Here is the sequence I am using to get Data Ready Interrupt.

Step1: Give power to Accel Sensor

Step2: Setting Ctrl_Reg1 with 00111111b(0x3F)

Step3: As I am configuring ODR as 1000Hz providing sleep of (1/1000+1ms) 2 ms as per data sheet.

Step4: Configuring Ctr_Reg3 with 00000010b (0x02).

Step 5: Enabling H3LIS Interrupt 1 and Interrupt 2 pins and Registering call back API.

Step 6: Waiting for data ready interrupt.

Here I am facing problem is I could not see the Data Ready Interrupt, i.e., Data Ready Interrupt call back function is not triggering.

Anybody faced this problem ?

Thanks,

Siva.

#h3lis331 #h3lis331dl-configuration #h3lis331dl-data-ready-interrupt

[Miroslav BATEK]

Posted on February 13, 2018 at 14:55

Your sensor configuration is correct, I suppose the problem is in the MCU configuration.

If you have a scope or logic analyzer you can check that the DRDY signal is available on the INT1 pin.

[Kattinti Siva Krishna]

Posted on February 13, 2018 at 16:49

Thanks for your input Miroslav.

Here one question will be from above steps in which step suggestible to configure INT1_H3LIS and INT2_H3LIS pins of Accel sensor to enable interrupt from MCU.

[Miroslav BATEK]

Posted on February 14, 2018 at 14:31

You can configure it anytime you want, there is not issue with that.

Personally I would configure the interrupts before I set the ODR (before step 2).