How to test sensors in redmangoH

mangOH Red
1

When I start app redSensorToCloud, all sensors don’t send the value to the Cloud.

So, I would like to verify sensors in Red mango such as pressure, light sensor one by one to make sure that the sensor is still working.

Any ideas?

2

are you using WP76?

You can have a look on this thread:

3

It is WP8548.
Some sensor can transmit sometimes. Really have no idea

4

have you compared the logread to debug?

5

This is what I got from logread -f

Oct 8 14:08:04 swi-mdm9x15 user.err Legato: =ERR= | redSensor[1080]/position T=main | position.c Sample() 50 | Failed to read sensor (LE_OUT_OF_RANGE).
Oct 8 21:08:04 swi-mdm9x15 user.err kernel: [ 860.181443] qup_i2c qup_i2c.0: QUP: I2C status flags :0x1300c8, irq:187
Oct 8 21:08:04 swi-mdm9x15 user.err kernel: [ 860.187089] qup_i2c qup_i2c.0: I2C slave addr:0x3a not connected
Oct 8 21:08:04 swi-mdm9x15 user.info kernel: [ 860.197192] gpio_check_and_wake: wake-n_gpio77 STATE=WAKEUP
Oct 8 21:08:04 swi-mdm9x15 user.info kernel: [ 860.215901] gpio_check_and_wake: wake-n_gpio77 STATE=SLEEP

6

You can try to see the value of the following and see if the sensor is working fine.

/sys/bus/i2c/devices/0-0068/iio:device0/in_accel_x_raw

7

-sh: /sys/bus/i2c/devices/0-0068/iio:device0/in_accel_x_raw: Permission denied

8

You should use “cat /sys/bus/i2c/devices/0-0068/iio:device0/in_accel_x_raw”

9

it replies in some values. however, do you know the address for light sensor, pressure sensor…?

10

root@swi-mdm9x15:~# ls /sys/bus/i2c/devices/0-0068/iio:device0

buffer in_anglvel_sampling_frequency in_temp_scale
dev in_anglvel_sampling_frequency_available name
in_accel_sampling_frequency in_anglvel_scale power
in_accel_sampling_frequency_available in_anglvel_scale_available scan_elements
in_accel_scale in_anglvel_x_raw subsystem
in_accel_scale_available in_anglvel_y_raw trigger
in_accel_x_raw in_anglvel_z_raw uevent
in_accel_y_raw in_temp_offset
in_accel_z_raw in_temp_raw

where is the light senser

11

This is for pressure sensor

/sys/bus/i2c/devices/0-0076/iio:device1/in_pressure_input

1 Like
12

Light sensor is using ADC to read

1 Like