Re: Call for articles with your product on M5Stack!!
M5Stack Tough (ESP-32) Sailing Instruments Display and Autopilot Control
M5Stack Tough (ESP-32) Sailing Instruments Display and Autopilot Control Arduino sketches
With LVGL UI
Mostly oriented for boating projects (can be interesting to RV and off-grid living users, or Arduino and esp32 or other microcontroller enthusiasts and hobbyists)
I’ve made Bareboat Necessities (BBN) Marine OS for CoreMP135 from m5stack.
It’s free and open source system based on Debian Bookworm.
CoreMP135 of BBN OS version includes:
BBN OS on CoreMP135 turns it into boat appliance able to communicate with N2K, NMEA 0183, PyPilot motor controller and IMU, Victron Cerbo MQTT.
The CoreMP135 device loaded with BBN OS is practically plug and play. After initial boot you can just wire your boat devices via RS-485 or CAN and start using it. No configuration required.
The documentation, source code and download links:
https://github.com/bareboat-necessities/lysmarine_gen/tree/coremp135_bookworm
I've made some examples with LVGL and M5Stack Tough.
They are for Arduino.
https://github.com/bareboat-necessities/bbn-m5stack-tough
Somehow I can't make bluetooth to work on it.
Thanks
How can I read built-in mpu6886 FIFO on atomS3?
M5Unified library doesn't have an example and looking at the code
many methods for FIFO are commented out and made non-public.
Can someone provide an example? I need higher sample rate and
synchronized gyro and accelerometer samples. The FIFO register supports burst reads of synchronized data for the specified data rate. The interrupt function is used to determine when new data is available.
Looks like using FIFO is only correct way to get accurate data.
Thanks
I’ve made Bareboat Necessities (BBN) Marine OS for CoreMP135 from m5stack.
It’s free and open source system based on Debian Bookworm.
CoreMP135 of BBN OS version includes:
BBN OS on CoreMP135 turns it into boat appliance able to communicate with N2K, NMEA 0183, PyPilot motor controller and IMU, Victron Cerbo MQTT.
The CoreMP135 device loaded with BBN OS is practically plug and play. After initial boot you can just wire your boat devices via RS-485 or CAN and start using it. No configuration required.
The documentation, source code and download links:
https://github.com/bareboat-necessities/lysmarine_gen/tree/coremp135_bookworm
@ajb2k3 said in CoreMP135 screen saver sleep for built in LCD:
@mgrouch You need to create a program for that
I do not see how. There are examples for displaying things on ILI9342C
using framebuffer and LVGL.
I do not see how to turn off backlight on ILI9342C. Is there some code example? Or command line utility with the code to control brightness? I was able to code that on m5stack tough on esp32 which has same ILI9342C.
Also how to wake up screen by touch?
I guess with brightness off touch functions are still there. So I need example of code listening for touch event and controlling backlight (voltage of it?) on ILI9342C.
I need some help.
Thanks
Does coremp135 have hardware 9-bit uart? Like in SeaTalk1.
Thanks
Is there a way to enable sleep for built in LCD to
turn it off to conserve power and turn on/wake up by touch?
I’m using Debian image.
Thanks
@mgrouch said in CoreMP135 Debian image:
Ok. I got the device and I loaded Debian image M5_CoreMP135_debian12_20240628 from
https://docs.m5stack.com/en/guide/linux/coremp135/image
It did boot.
However, upon boot it didn't resize the root partition to occupy whole SD card.
As a result I can't install anything because there is no space.I had to use fdisk to resize /root partition (#5 for me, making sure I use same starting block and preserve filesystem type, see https://askubuntu.com/questions/24027/how-can-i-resize-an-ext-root-partition-at-runtime) and then
resisz2fs command (something like resize2fs /dev/mmcblk0p5).
It would be too hard for an average user to repeat that.Also the kernel on it is very old. 5.15.118
On Raspberry Bookworm it is much newer. (6.x)There are many errors related to USB reported by dmesg.
I have powered USB HUB and keyboard is connected via it.
Keyboard works though.Is it possible for next versions to have image which would resize to SD card size?
Same way as Pi OS does?Is it possible to have have newer linux kernel? I think USB errors might be related to old version of it.
Thanks
USB errors were my fault. I plugged usb 3.0 hub into usb 2.0 port.
One more question:
What are the tty devices names of RS-485 and UART6 under /dev?
Thanks
According to specs coremp135 is supposed to have 4Gb memory.
However debian image reports only 462Mb
free --mega
Ok. I got the device and I loaded Debian image M5_CoreMP135_debian12_20240628 from
https://docs.m5stack.com/en/guide/linux/coremp135/image
It did boot.
However, upon boot it didn't resize the root partition to occupy whole SD card.
As a result I can't install anything because there is no space.
I had to use fdisk to resize /root partition (#5 for me, making sure I use same starting block and preserve filesystem type, see https://askubuntu.com/questions/24027/how-can-i-resize-an-ext-root-partition-at-runtime) and then
resisz2fs command (something like resize2fs /dev/mmcblk0p5).
It would be too hard for an average user to repeat that.
Also the kernel on it is very old. 5.15.118
On Raspberry Bookworm it is much newer. (6.x)
There are many errors related to USB reported by dmesg.
I have powered USB HUB and keyboard is connected via it.
Keyboard works though.
Is it possible for next versions to have image which would resize to SD card size?
Same way as Pi OS does?
Is it possible to have have newer linux kernel? I think USB errors might be related to old version of it.
Thanks
@teastain said in CoreMP135 Debian image:
@mgrouch https://github.com/m5stack/M5Stack_Linux_Libs
The Official M5Stack CoreMP135 library repository.
I’d like to port my esp32 LVGL app to Linux on coremp135.
This app:
https://github.com/bareboat-necessities/bbn-m5stack-tough
Are there any guides on porting?
Thanks