icm-42670 not initialize with nrf52832

[fatimatayyab71]

I am using ncs version 2.5.0.rc-1, I want to initialize the icm-42670 using nrf52832 zephyr ready made driver for invensense. But i continuously seeing sensor: Device not ready. Do i have to add any other initializations in the main?

Overlay File:

&pinctrl {
	spi0_default_alt: spi0_default_alt {
		group1 {
			psels = <NRF_PSEL(SPIM_SCK, 0, 27)>,
				<NRF_PSEL(SPIM_MOSI, 0, 26)>,
				<NRF_PSEL(SPIM_MISO, 0, 23)>;
		};
	};

	spi0_sleep_alt: spi0_sleep_alt {
		group1 {
			psels = <NRF_PSEL(SPIM_SCK, 0, 27)>,
				<NRF_PSEL(SPIM_MOSI, 0, 26)>,
				<NRF_PSEL(SPIM_MISO, 0, 22)>;
			low-power-enable;
		};
	};
};
&spi0 {
	compatible = "nordic,nrf-spi";
	status = "okay";
	pinctrl-names = "default", "sleep";
icm42670@75 {
	compatible = "invensense,icm42670";
	accel-hz = <800>;
	gyro-hz = <800>;
	accel-fs = <16>;
	gyro-fs = <2000>;
	reg = <0x75>;
	spi-max-frequency = <0>;
};
};

Main.c File

#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/drivers/sensor.h>
#include <stdio.h>

static const char *now_str(void)
{
	static char buf[16]; /* ...HH:MM:SS.MMM */
	uint32_t now = k_uptime_get_32();
	unsigned int ms = now % MSEC_PER_SEC;
	unsigned int s;
	unsigned int min;
	unsigned int h;

	now /= MSEC_PER_SEC;
	s = now % 60U;
	now /= 60U;
	min = now % 60U;
	now /= 60U;
	h = now;

	snprintf(buf, sizeof(buf), "%u:%02u:%02u.%03u",
		 h, min, s, ms);
	return buf;
}

static int process_icm42670(const struct device *dev)
{
	struct sensor_value temperature;
	struct sensor_value accel[3];
	struct sensor_value gyro[3];
	int rc = sensor_sample_fetch(dev);

	if (rc == 0) {
		rc = sensor_channel_get(dev, SENSOR_CHAN_ACCEL_XYZ,
					accel);
	}
	if (rc == 0) {
		rc = sensor_channel_get(dev, SENSOR_CHAN_GYRO_XYZ,
					gyro);
	}
	if (rc == 0) {
		rc = sensor_channel_get(dev, SENSOR_CHAN_DIE_TEMP,
					&temperature);
	}
	if (rc == 0) {
		printf("[%s]:% g Cel\n"
		       "  accel % f % f % f m/s/s\n"
		       "  gyro  % f % f % f rad/s\n",
		       now_str(),
		       sensor_value_to_double(&temperature),
		       sensor_value_to_double(&accel[0]),
		       sensor_value_to_double(&accel[1]),
		       sensor_value_to_double(&accel[2]),
		       sensor_value_to_double(&gyro[0]),
		       sensor_value_to_double(&gyro[1]),
		       sensor_value_to_double(&gyro[2]));
	} else {
		printf("sample fetch/get failed: %d\n", rc);
	}

	return rc;
}

int main(void)
{
	const struct device *const icm42670 = DEVICE_DT_GET_ONE(invensense_icm42670);
		if (!device_is_ready(icm42670)) {
		printk("sensor: device not ready.\n");
		return 0;
	}

	process_icm42670(icm42670);
	
	printf("Configured for triggered sampling.\n");
	return 0;
}

prj.config:

CONFIG_SPI=y
CONFIG_SENSOR=y

[Håkon Alseth]

Hi,

 

This field should be non-zero:

spi-max-frequency = <0>;

 

And you should declare the CSN pin for your sensor:

&spi0 {
    compatible = "nordic,nrf-spi";
    status = "okay";
    pinctrl-names = "default", "sleep";
    /* Change this to the GPIO you're using for CSN */
    cs-gpios = <&gpio0 30 GPIO_ACTIVE_LOW>;
    /* Note the @0 here to indicate cs-gpios array index */
    icm42670@0 {
        compatible = "invensense,icm42670";
        ...
    };
};

 

Kind regards,

Håkon