Hi, I'm trying to read data from an LIS2DH accelerometer using the nRF5340 DK board. I have been able to build and flash my code to the board, but the terminal outputs, "Device not ready", indicating that the sensor was not initialized properly. The code I am using (shown below) should work as it is based off the sample LIS2DH application. I was wondering if someone could help explain why the sensor is not initializing properly. Thank you!
main:
#include <stdio.h> #include <zephyr/kernel.h> #include <zephyr/device.h> #include <zephyr/drivers/sensor.h> static void fetch_and_display(const struct device *sensor) { static unsigned int count; struct sensor_value accel[3]; const char *overrun = ""; int rc = sensor_sample_fetch(sensor); ++count; if (rc == -EBADMSG) { /* Sample overrun. Ignore in polled mode. */ if (IS_ENABLED(CONFIG_LIS2DH_TRIGGER)) { overrun = "[OVERRUN] "; } rc = 0; } if (rc == 0) { rc = sensor_channel_get(sensor, SENSOR_CHAN_ACCEL_XYZ, accel); } if (rc < 0) { printf("ERROR: Update failed: %d\n", rc); } else { printf("#%u @ %u ms: %sx %f , y %f , z %f", count, k_uptime_get_32(), overrun, sensor_value_to_double(&accel[0]), sensor_value_to_double(&accel[1]), sensor_value_to_double(&accel[2])); } } int main(void) { const struct device *const sensor = DEVICE_DT_GET_ANY(st_lis2dh); if (sensor == NULL) { printf("No device found\n"); return 0; } if (!device_is_ready(sensor)) { printf("Device %s is not ready\n", sensor->name); return 0; } printf("Polling at 0.5 Hz\n"); while (true) { fetch_and_display(sensor); k_sleep(K_MSEC(2000)); } }
Overlay file:
prj.conf: