DevHeads IoT Integration Server•14mo ago

Good shout, CAN will show an error when messages are not acknowledged, in default configurations tha

Good shout, CAN will show an error when messages are not acknowledged, in default configurations that will cause the message to be sent repeatedly forever

TL;DR A CAN message must be received by at least one node or it is an error

Kke7c2mi Good shout, CAN will show an error when messages are not acknowledged, in defaul...

segfaultdev.elf•11/15/24, 3:29 PM

I was checking then but it was mainly breadboard issue

segfaultdev.elf•11/15/24, 3:29 PM

now everything is fixed

ke7c2miOP•11/15/24, 3:31 PM

I spent many hours of my life fighting CAN, it can be quite spicy

Marvin•11/15/24, 3:43 PM

Good luck hiding UART

MMarvin Good luck hiding UART

melta101•11/15/24, 4:00 PM

Firmware extraction or shell access?

ZZacckOsiemo can you please find out how many computers are used here, like gpos plus rtos sy...

aymen ammari•11/15/24, 4:13 PM

Just like @melta101 said they all work with PLC except for the camera ones they are connected to an actual pc with their software to control it with from basic functions to more complicated ones

Mmelta101 Firmware extraction or shell access?

Marvin•11/15/24, 4:15 PM

can be both. shell access can lead to the other.

MMarvin can be both. shell access can lead to the other.

melta101•11/15/24, 4:29 PM

Yep
I have done this to an old router

Marvin•11/15/24, 4:46 PM

Bet that was fun.

Rodrigo•11/15/24, 10:26 PM

Hii, everyone

Kke7c2mi I spent many hours of my life fighting CAN, it can be quite spicy

segfaultdev.elf•11/16/24, 2:56 AM

same here

segfaultdev.elf•11/16/24, 2:57 AM

and Then Finally Peace

segfaultdev.elf•11/16/24, 2:57 AM

It took me almost a day

ke7c2miOP•11/16/24, 12:37 PM

Yeah once it works it's very solid.

Twitches thinking of adjusting sample point

segfaultdev.elf•11/16/24, 6:44 PM

have anyone proted FreeRTOS for STM32F446RE I am getting so many MPU realted error

segfaultdev.elf•11/16/24, 6:46 PM

/usr/lib/gcc/arm-none-eabi/14.1.0/../../../../arm-none-eabi/bin/ld: CMakeFiles/freertos.dir/FreeRTOS/portable/GCC/ARM_CM4_MPU/port.c.o: in function `vSVCHandler_C':
/home/asraful/Code/STM32/STM32F446xx/FreeRTOS/portable/GCC/ARM_CM4_MPU/port.c:508:(privileged_functions+0x93c): undefined reference to `__syscalls_flash_start__'
/usr/lib/gcc/arm-none-eabi/14.1.0/../../../../arm-none-eabi/bin/ld: /home/asraful/Code/STM32/STM32F446xx/FreeRTOS/portable/GCC/ARM_CM4_MPU/port.c:508:(privileged_functions+0x940): undefined reference to `__syscalls_flash_end__'

/usr/lib/gcc/arm-none-eabi/14.1.0/../../../../arm-none-eabi/bin/ld: CMakeFiles/freertos.dir/FreeRTOS/portable/GCC/ARM_CM4_MPU/port.c.o: in function `vSVCHandler_C':
/home/asraful/Code/STM32/STM32F446xx/FreeRTOS/portable/GCC/ARM_CM4_MPU/port.c:508:(privileged_functions+0x93c): undefined reference to `__syscalls_flash_start__'
/usr/lib/gcc/arm-none-eabi/14.1.0/../../../../arm-none-eabi/bin/ld: /home/asraful/Code/STM32/STM32F446xx/FreeRTOS/portable/GCC/ARM_CM4_MPU/port.c:508:(privileged_functions+0x940): undefined reference to `__syscalls_flash_end__'

segfaultdev.elf•11/16/24, 6:47 PM

I think I have to implement so many things manually

segfaultdev.elf•11/16/24, 6:57 PM

where should i put this section?

segfaultdev.elf•11/16/24, 6:57 PM

other than everything fixed

Ssegfaultdev.elf ```c /usr/lib/gcc/arm-none-eabi/14.1.0/../../../../arm-none-eabi/bin/ld: CMakeFi...

Umesh Lokhande•11/16/24, 7:01 PM

It seems like you used ARM_CM4_MPU architecture from GCC folder of FreeRTOS source files. To make it work with STM32F4 you must use ARM_CM4F folder and its associated port.cport.c and portmacro.hportmacro.h Once you fix this then just make sure FreeRTOSConfig.h configured properly and then project will compile fine. Let me know if issue persists even after making changes

UUmesh Lokhande It seems like you used *ARM_CM4_MPU* architecture from *GCC* folder of FreeRTOS ...

segfaultdev.elf•11/16/24, 7:07 PM

my MCU has MPU so I am trying to use one with the mpu

Ssegfaultdev.elf my MCU has MPU so I am trying to use one with the mpu

Umesh Lokhande•11/16/24, 7:17 PM

Here's a similar question with the discussion which already answered question https://freertos.org/FreeRTOS_Support_Forum_Archive/August_2017/freertos_Setting_compiler_path_to_ARM_CM4_MPU_showing_error_300b24d2j.html Hope you find it useful.

UUmesh Lokhande Here's a similar question with the discussion which already answered question <h...

segfaultdev.elf•11/16/24, 7:23 PM

Sorry but I am not seeing any answer I am only seeing post about the porblems

UUmesh Lokhande Here's a similar question with the discussion which already answered question <h...

segfaultdev.elf•11/16/24, 7:24 PM

tilleli.•11/16/24, 8:39 PM

Hello anyy helpp

Ttilleli.Hello anyy helpp

techielew•11/16/24, 9:01 PM

Help with what?

UUmesh Lokhande Here's a similar question with the discussion which already answered question <h...

segfaultdev.elf•11/16/24, 9:21 PM

also do you also avoid using MPU? I mean I can port without MPU easily. But porting MPU one giving me nightmare

Ssegfaultdev.elf also do you also avoid using MPU? I mean I can port without MPU easily. But port...

Umesh Lokhande•11/17/24, 3:38 AM

So far I didn't need so haven't tried ARM_CM4_MPU since STM32F446RE uses Cortex-M4 core with Floating point (ARM_CM4F). I keep things simple & avoid exploring features that I don't need for immediate future projects

UUmesh Lokhande So far I didn't need so haven't tried *ARM_CM4_MPU* since STM32F446RE uses *Cort...

segfaultdev.elf•11/17/24, 3:38 AM

I see

UUmesh Lokhande So far I didn't need so haven't tried *ARM_CM4_MPU* since STM32F446RE uses *Cort...

segfaultdev.elf•11/17/24, 9:12 AM

without mpu my one is working just fine

Accur4te•11/17/24, 2:29 PM

hey guys a newbie question - does esp32 c3 support wifi HALOW , if yes how can we access it . IF not what are other alternative development environment we can use to work with wifi halow .

techielew•11/17/24, 3:04 PM

@Event Pings apologies, we inadvertently duplicated the FreeRTOS utilities event, which already aired two weeks ago. If you are interested in viewing it you can watch it here: https://www.youtube.com/live/ziqU8c1yhWM?si=ubGCumyqNh31Gq46

YouTubeDevHeads

Task Utilities and Interrupt Handling with FreeRTOS (DevHeads' Engi...

Join this DevHeads Engineering Hour REHEAT where IoT expert Umesh Lokhande dives into task utilities, task starvation prevention, and interrupt handling in F...

Ttechielew @Event Pings apologies, we inadvertently duplicated the FreeRTOS utilities event...

techielew•11/17/24, 3:04 PM

Also feel free to reach out to @Umesh Lokhande with any questions here in the chat.

Heart•11/18/24, 5:49 AM

HHeart Hi

techielew•11/18/24, 5:57 AM

Welcome, Heart. What brings you to DevHeads? What are you working on?

AAccur4te hey guys a newbie question - does esp32 c3 support wifi HALOW , if yes how can w...

Umesh Lokhande•11/18/24, 9:35 AM

I don't think esp32 modules support's wifi HaLow but you can check FGH100M module from Quectel https://www.mouser.in/new/quectel/quectel-fgh100m-modules

AAccur4te hey guys a newbie question - does esp32 c3 support wifi HALOW , if yes how can w...

ZacckOsiemo•11/18/24, 10:34 AM

wifi
halow is very new and you need some special equipment

ZacckOsiemo•11/18/24, 10:35 AM

and even then you need a pair at least I got one thinking i could play with it but turns you need at least 2

segfaultdev.elf•11/18/24, 11:58 AM

Hello Everyone, I have tried and implemented CAN bus protocol. I have faced many issues, I went through them and fixed them at the end
I am very excited to share those experience with all of you. We are having a chit chat session on CAN Bus this Wednesday 9pm(GMT+6) all of you are Invited mybe It won't be very detailed but it CAN give you a good push to start your journey with CAN Bus. Let's share and grow together
here is the link: https://app.livestorm.co/p/e9fb78bc-272c-4c9a-a4df-191d0104ce6d/live?s=2e2c783c-cb4d-4458-a021-f77095752034

Introduction to CAN Bus protocol | DevHeads IoT Integration Server

ZZacckOsiemo and even then you need a pair at least I got one thinking i could play with it b...

Accur4te•11/18/24, 2:13 PM

ohh got it , i was reading this book - iot architecture protocol & i came across it

AAccur4te ohh got it , i was reading this book - iot architecture protocol & i came across...

Umesh Lokhande•11/19/24, 7:02 AM

may i know the author & the publication of this book

UUmesh Lokhande may i know the author & the publication of this book

Accur4te•11/19/24, 7:37 AM

name - Internet of things architectures , protocols and standards by Simone cirani , gianluigi ferrari , marco picone , luca verltri

AAccur4te name - Internet of things architectures , protocols and standards by Simone cir...

ZacckOsiemo•11/19/24, 8:49 AM

oh if I had another life, I am still reading feedback systems

Ssegfaultdev.elf Hello Everyone, I have tried and implemented CAN bus protocol. I have faced many...

techielew•11/19/24, 9:41 AM

Can we add this to the server events page?

segfaultdev.elf•11/19/24, 9:42 AM

Yes you can but in that case I need a bit help to make it more professional

Ssegfaultdev.elf Yes you can but in that case I need a bit help to make it more professional

techielew•11/19/24, 9:42 AM

I'm happy to help

Ssegfaultdev.elf Hello Everyone, I have tried and implemented CAN bus protocol. I have faced many...

techielew•11/19/24, 9:53 AM

Here you go, Dev @Undefined: https://discord.gg/cHNGvqMJG9?event=1308368105608839191

techielew•11/19/24, 9:55 AM

@here if you are ever interested in leveraging the DevHeads event/meeting platform (on LiveStorm), DM me with the topic, day, time, and your email address and we'll work to get you set up.

ZacckOsiemo•11/19/24, 9:56 AM

I voluteer @melta101 to do a zephyr driver

ZacckOsiemo•11/19/24, 9:56 AM

https://tenor.com/bD4qt.gif

Tenor

Good shout, CAN will show an error when messages are not acknowledged, in default configurations tha

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