BMA456 any-motion/no-motion interrupts vs. ODR

[rearmimator]

Hi there,

I wonder if there is any dependency between any-motion/no-motion interrupt generation and configured output data rate (ODR).

Oddly enough, but no interrupts are generated when I configure ODR down below 12.5 Hz.

Thus setting ODR in range from 6.25 Hz to 0.78 Hz cause no interrupt, no matter how long I wait or strong shake the board.

Here is sample configuration at 3.12 Hz, which causes no interrupt with bma456_v2.12.8 release;

=== Get accelerator configuration successful ===
odr = 8
range = 1
bandwidth = 2
perf_mode = 1

=== Set accelerator configuration successful ===
odr = 3
range = 1
bandwidth = 2
perf_mode = 1

=== Get any-motion configuration successful === 
axis_en = 0x0
duration = 0x5
threshold = 0xaa

=== Get no-motion configuration successful === 
axis_en = 0x0
duration = 0x5
threshold = 0xaa

=== Set any-motion configuration successful === 
axis_en = 0x7
duration = 0x5
threshold = 0x400

=== Set no-motion configuration successful === 
axis_en = 0x7
duration = 0x1f4
threshold = 0xcc

[Minhwan]

Hello, 

Could you share your configuration part with me? 🙂 

I'd like to check it. 

Thank you. 

[rearmimator]

Hi,

---

@Minhwan wrote:

Hello, 

Could you share your configuration part with me? 🙂 

I'd like to check it. 

Thank you. 

---

Sorry for late response.

I just want to check with you whether configuration, that may be inferred from attached archive, is sufficient to reproduce the issue: 

https://community.bosch-sensortec.com/varuj77995/attachments/varuj77995/bst_community-mems-forum/464...

I will be happy to provide more information if needed.

Here is an excerpt from on of the files:

ODR := 6.25 Hz, duation = 5 s

=== Get power mode configuration successful ===
adv_power_save = 1

=== Set power mode configuration successful ===
adv_power_save = 1

=== Get power mode configuration successful ===
adv_power_save = 1

=== Get accelerator configuration successful ===
odr = 8
range = 1
bandwidth = 2
perf_mode = 1

=== Set accelerator configuration successful ===
odr = 4
range = 1
bandwidth = 2
perf_mode = 1

=== Internal status register ===
status = 0x1

=== Get accelerator configuration successful ===
odr = 4
range = 1
bandwidth = 2
perf_mode = 1

=== Get any-motion configuration successful === 
axis_en = 0x0
duration = 0x5
threshold = 0xaa

=== Get no-motion configuration successful === 
axis_en = 0x0
duration = 0x5
threshold = 0xaa

=== Set any-motion configuration successful === 
axis_en = 0x7
duration = 0x5
threshold = 0x400

=== Set no-motion configuration successful === 
axis_en = 0x7
duration = 0xfa
threshold = 0xcc

=== Get any-motion configuration successful === 
axis_en = 0x7
duration = 0x5
threshold = 0x400

=== Get no-motion configuration successful === 
axis_en = 0x7
duration = 0xfa
threshold = 0xcc
X := 8196, Y := 101, Z := -163
Shake the sensor in any direction

[Minhwan]

Hello, 

I just check your setting, and your threshold is quite high for test. 

=== Set any-motion configuration successful === 
axis_en = 0x7
duration = 0x5
threshold = 0x400

Could you test with 0xAA ( default value)

Please check my test code and also would be great you share with your code like this. 

Thanks,