OpenMarine

Hi,
I enabled i2c and I can see my sensors, but System Check says:

Checking I2C sensors... | I2C enabled | openplotter-i2c-read not running | Access to Signal K server validated

↳Your Raspberry Pi is too old.

pi@openplotter:~ $ sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- 69 -- -- -- -- -- --
70: -- -- -- -- -- -- 76 --
pi@openplotter:~ $

My model according to https://elinux.org/RPi_HardwareHistory
c03112
Q2 2019
4 Model B
1.2
4 GB
(Mfg by Sony)

Is that really too old??

I can see in the code (the only reference I could find to "Your Raspberry Pi is too old" with Google), that this message is shown, when the /dev/i2c-0 is in "ls /dev/i2c*"

pi@openplotter:~ $ ls /dev/i2c*
/dev/i2c-0 /dev/i2c-1 /dev/i2c-10 /dev/i2c-20 /dev/i2c-21 /dev/i2c-22
pi@openplotter:~ $

What can I do?

I got the values from the Sensor into SignalK successfully using this SignalK Plugin:

signalk-raspberry-pi-bme280 - https://www.npmjs.com/package/signalk-ra...-pi-bme280

I don't know why Openplotter thinks my raspberry is too old.

Hi after setting up my hardware clock on a CM4 I get the same message.
I had to add the following lines in the boot.txt for the watch:
dtparam=i2c_vc=on
dtoverlay=i2c-rtc,pcf85063a,i2c_csi_dsi

I just installed Openplotter on a new computer and got the same message in the status bar of the I2C app. As a result I cannot add my sensors. Sad

Hardware:

Raspberry Pi Compute Module 4 Wireless / 8 GB RAM / 32 GB eMMC
Waveshare CM4-IO-BASE-B baseboard rev. 4
Waveshare 8inch DSI touch display
BMP280 sensor

I2C seems to be working, sensor is shown at address 76

Code:
pi@openplotter:~ $ sudo i2cdetect -y 1

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

                        -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

-- -- -- -- -- -- 76 --

Software:
Installed from image 2022-07-18-OpenPlotter-v3-Starting-stable-64bit-img
Available updates installed.
I2C Sensors 3.3.7-stable
GPIO 3.1.0-alpha

/boot/config.txt excerpt:

Code:
dtparam=i2c_arm=on

dtparam=audio=on

camera_auto_detect=1

display_auto_detect=1

dtoverlay=vc4-kms-v3d

max_framebuffers=2

arm_64bit=1

disable_overscan=1

[cm4]

# Enable host mode on the 2711 built-in XHCI USB controller.

# This line should be removed if the legacy DWC2 controller is required

# (e.g. for USB device mode) or if USB support is not required.

otg_mode=1

[all]

[pi4]

# Run as fast as firmware / board allows

arm_boost=1

[all]

# Waveshare 8inch DSI display:

ignore_lcd=1

dtparam=i2c_vc=on

dtparam=i2c_arm=on

dtoverlay=WS_xinchDSI_Screen,SCREEN_type=8,I2C_bus=10

dtoverlay=WS_xinchDSI_Touch,I2C_bus=10,invertedx,swappedxy

# enable I2C1 (I2C0 is used by DSI display)

dtparam=i2c1=on

I will take a look at this soon

Hi Sailoog, I got same issue, when validating for Buy/Nobuy decision a batch of 20 Pi4 8Gb, are there any news about this 'too old' message ?

The question is : Should I go for a NoBuy Huh

EDiT PS : The issue only shows from V3 upward Exclamation

Does this means all boards manufactured after a certain (secret date) will not be acceptable for V3 and upward Angry

Is this constraint due to SignalK ?
Is there a possible work around ?

do not panic, this is obviously a software issue, next on the list...

you can buy as many RPi4 as you want, if you find them...

it seems that /dev/i2c-0 not only appears in RPi1, it also appears in RPi4 under some conditions.

If I am not wrong, everyone suffering from this error has manipulated config.txt manually, right? I am not able to reproduce it but it has an easy fix.

Fixed in openplotter-i2c v3.3.10. Test and report please.

The error message is gone. My BMP280 at address 76 can be configured. Data is shown in Signal K server and dashboards. (I removed the SignalK-BMx280 plugin which I had used before.)

Great job! Thanks Sailoog! Smile

buri

buri

nebosa

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Sailoog

Didier B

Sailoog

Sailoog

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