icm42605 example has an error.

[noseed]

Hi, 

I'm trying to use examples.
The ICM42605 example does not work.

 I get the following errors.

[00:00:00.257,354] <err> os: ***** MPU FAULT *****

[00:00:00.257,446] <err> os:   Data Access Violation

[00:00:00.257,446] <err> os:   MMFAR Address: 0xd28

[00:00:00.257,476] <err> os: r0/a1:  0x2000190c  r1/a2:  0x00000d20  r2/a3:  0xf01369f7

[00:00:00.257,507] <err> os: r3/a4:  0x00000d20 r12/ip:  0x00000000 r14/lr:  0x00012b39

[00:00:00.257,507] <err> os:  xpsr:  0xa1000000

[00:00:00.257,537] <err> os: Faulting instruction address (r15/pc): 0x00012b56

[00:00:00.257,537] <err> os: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0

[00:00:00.257,568] <err> os: Current thread: 0x20000ee0 (unknown)

[00:00:01.295,135] <err> os: Halting system

There seems to be an error in the code below.

It was tested with nRF52832.

Thanks in advance.

[Sigurd]

Hi,

Could be that the sensor is not connected properly.

Here is the overlay that shows how to connect the pins:

https://github.com/zephyrproject-rtos/zephyr/blob/main/samples/sensor/icm42605/boards/nrf52dk_nrf52832.overlay

[noseed]

Hi, 

I checked the overlay file.
It has been wired to the ICM42605-EVM board.

I am using NCS 1.9.0

Thank you.

[Sigurd]

noseed said:

ICM42605-EVM board.

Unfortunately, I don't have a ICM42605, so I can't reproduce it here.

 You can use arm-none-eabi-addr2line -e build/zephyr/zephyr.elf 0xFAULTING_ADDR to see if it gives a hint on where in your src the fault occurred.

addr2line -e zephyr.elf 0x00012b56

Since this sample is a upstream Zephyr sample, have you tried asking in the zephyr discord?

https://docs.zephyrproject.org/latest/getting_started/index.html#asking-for-help

[noseed]

Hi, 

$ arm-none-eabi-addr2line -e build_nrf52dk_nrf52832/zephyr/zephyr.elf 0xd00
C:/work/ncs/v1.9.1/zephyr/include/drivers/sensor.h:661

/**
 * @brief Helper function for converting struct sensor_value to double.
 *
 * @param val A pointer to a sensor_value struct.
 * @return The converted value.
 */
static inline double sensor_value_to_double(const struct sensor_value *val)
{
	return (double)val->val1 + (double)val->val2 / 1000000;
}

I gave up using the sensor driver.
I'll implement it with SPI.

Thank you for your advice.