Hello felmue,

When PLC was disconnected the power supply.
time.tm_wday cannot remember. Other are correct.

But PLC got the power supply.
It worked normally as below code.

char Text[100];
static struct tm time;
char DayOfWeek[7][10] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
char MonthOfYear[12][4] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

sprintf(Text, "%s, %d %s %d %02d:%02d:%02d",
DayOfWeek[time.tm_wday],
time.tm_mday,
MonthOfYear[time.tm_mon],
time.tm_year + 1902,
time.tm_hour,
time.tm_min,
time.tm_sec);

Serial.print(Text);

Result

Wednesday, 19 Nov 2025 16:38:35

Thank you

Hello felmue,

After downloaded it and unzipped.
I copied 3 files as below and then replace them.

1. M5StamPLC.cpp at C:\Users\xxx\Documents\Arduino\libraries\M5StamPLC\src
2. rx8130.cpp at C:\Users\xxx\Documents\Arduino\libraries\M5StamPLC\src\utils\rx8130
3. rx8130.h at C:\Users\xxx\Documents\Arduino\libraries\M5StamPLC\src\utils\rx8130

It works well.
Thank you very much for your help.

Hi,

When M5Stamp PLC Controller with M5StampS3 got the power supply.
It can write and read the current Date and Time.
But after I turned of the power supply for 1 day.

The PLC shown "Sunday, 0 Jan 2090 33:20:39"
It is not the current Date and Time.

Could you recommend me to solve this?

Thank you

I would like to disable the speaker while reboot the MCU.
Could you tell me the command line?

@ajb2k3
After burned with M5_CoreMP135_debian12_20240919.img
Don't restart the MCU.
I tried the commands as below.

1. root@CoreMP135:~# sudo service ssh start
2. root@CoreMP135:~# sudo adduser good
3. ifconfig
   eth0: inet 192.168.1.45
   root@CoreMP135:~# ssh good@192.168.1.45
4. CoreMP135 Partition Resize

After reboot the MCU.
The MCU can boot-up.

Thank you for very much for your help.

After updated, I restart it. It hang up.
The Device Manager cannot find COM Port.
I tried to burn image for 2 time.
It still hang up.

root@CoreMP135:~# pip list
Package Version

certifi 2025.1.31
charset-normalizer 3.4.1
distro 1.8.0
evdev 1.9.1
idna 3.10
paho-mqtt 2.1.0
pip 23.0.1
PyAudio 0.2.14
pyserial 3.5
requests 2.32.3
setuptools 66.1.1
smbus2 0.5.0
uiflow2 0.0.1rc1
urllib3 2.3.0
wheel 0.38.4
root@CoreMP135:~# uiflow2
UIFlow2 running PID: 2974
root@CoreMP135:~# uiflow2 enable
Created symlink /etc/systemd/system/multi-user.target.wants/uiflow2.service →
/etc/systemd/system/uiflow2.service.
enable uiflow2 service success
root@CoreMP135:~#

@robski

After I use latest M5_CoreMP135_debian12_20240919.
I can install UiFlow2.
Thank you very much for your help.

@robski

I tried it on Putty via USB.
Result is the same. It cannot add the user.

@robski

I tried the command as below result.
My IP: 192.168.1.55
Password: root

ssh root@192.168.1.55

root@192.168.1.55's password:

sudo adduser good

-sh: sudo: not found

@robski

I tried to add the user as below result.

sudo adduser good

-sh: sudo: not found

After logged in, I followed CoreMP135 Network Management.
And then I followed CoreMP135 UiFlow2 Quick Start to install UiFlow2.
It returned below message.

apt update

-sh: apt: not found

Could you suggest me to solve this problem?

Such as TL-WN725N 150Mbps Wireless N Nano USB Adapter.

Can CoreMP135 connect to the WIFI?
I would like to update the system and install Python whl Package and CoreMP135-UiFlow2 package.

@kuriko
When I clicked the Run button.
And connected the serial port.
The WebTerminal dialog box appeared and shown "Connected to Serial Port!" message.

• I pressed Download the program to device button on WebTerminal dialog box.
  The Progress status shown and then it was stuck.

• I pressed Run button on WebTerminal dialog box.
  It returned

^C

^C

^C

^C

I tried to write the code and download to CoreMP135 by UIFlow 2.2.4.
I pressed Download the program to device button.
And connected the serial port.
The WebTerminal dialog box appeared and shown login message.
And then I pressed Download the program to device button on WebTerminal dialog box.
The Progress status shown and then it was stuck.

Could you suggest me to solve this issue?

When CoreMP135 w/ STM32MP135D connected to monitor via HDMI port.
It shown text platform.
Can it boot to desktop platform?

I would like to use Ubuntu on CoreMP135 w/ STM32MP135D.
Could you suggest me how to use it?