Migrating LSM6DSL Custom FIFO and Interrupts Implementation from nRF to Zephyr SDK: Seeking Guidance

RE: Migrating LSM6DSL Custom FIFO and Interrupts Implementation from nRF to Zephyr SDK: Seeking Guidance

choesy — Thu, 18 May 2023 15:23:43 GMT

We can close this issue because i managed to implement the library from https://github.com/STMicroelectronics/lsm6dsl-pid . I did it all by totally avoiding the sensors abstractions. I used the direct I2C acess.

RE: Migrating LSM6DSL Custom FIFO and Interrupts Implementation from nRF to Zephyr SDK: Seeking Guidance

choesy — Wed, 17 May 2023 15:24:08 GMT

Hi, i misspoke, it is more like 5 actions to do durring the execution time, not exactly trigger modes. But it includes these steps: First i need the continous sampling low power mode and i need set triggers to check wether there is significant movement. If the movement occurs i need to start checking if the 7 walking steps have occured ( i additionaly need to set number of steps treshold), then switch to fifo mode to start collecting data (also in fifo mode i need to set tresholds and setup collecting data from fifo buffers). I know how to do all this using acess to the registers via I2C and using Interrputs. But the main question was if there is an easyer way of doing this using already existing sensor api. But thank you 😃.

RE: Migrating LSM6DSL Custom FIFO and Interrupts Implementation from nRF to Zephyr SDK: Seeking Guidance

Kazi Afroza Sultana — Tue, 16 May 2023 18:16:57 GMT

Could you please elaborate which five trigger modes you have to add?

''Could you point me to where i can find how to include custom library into the project?''

It https://github.com/zephyrproject-rtos/zephyr/discussions/30746 may help?

RE: Migrating LSM6DSL Custom FIFO and Interrupts Implementation from nRF to Zephyr SDK: Seeking Guidance

choesy — Mon, 15 May 2023 10:14:08 GMT

Thank you. So that means that there is alot of work to do if i want to customize my lsm6dsl. Because i will need to have like 5 different trigger modes. I guess i will have to create my own library for it. Could you point me to where i can find how to include custom library into the project?

RE: Migrating LSM6DSL Custom FIFO and Interrupts Implementation from nRF to Zephyr SDK: Seeking Guidance

Kazi Afroza Sultana — Fri, 12 May 2023 08:36:24 GMT

Hello,

To enabled trigger mode, you need to set CONFIG_LSM6DSL_TRIGGER=y (CONFIG_LSM6DSL_TRIGGER — Kconfig reference (nordicsemi.com)). When trigger mode is enabled, the driver can be set like

if (drv_data->hw_tf->update_reg(dev,
			       LSM6DSL_REG_INT1_CTRL,
			       LSM6DSL_MASK_INT1_CTRL_DRDY_XL |
			       LSM6DSL_MASK_INT1_CTRL_DRDY_G,
			       BIT(LSM6DSL_SHIFT_INT1_CTRL_DRDY_XL) |
			       BIT(LSM6DSL_SHIFT_INT1_CTRL_DRDY_G)) < 0) {
		LOG_ERR("Could not enable data-ready interrupt.");
		return -EIO;
	}

sdk-zephyr/lsm6dsl_trigger.c at main · nrfconnect/sdk-zephyr · GitHub

FIFO threshold interrupt register is INT1_FTH. You may select the register according to this ((https://www.st.com/resource/en/datasheet/lsm6dsl.pdf)).

Thanks.

Kazi