STM32 MPUs products

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TTCAN TUR division: rounding or truncating?

This is a request for clarification of the TUR (Time Unit Ratio) calculation in the TTCAN implementation of the FD-CAN peripheral that is part of STM32MP1xxx systems. Specifically: the TUR is composed of a numerator and a denominator, designated FDCA...

tarmasr by Associate III
  • 2 replies
  • 0 kudos

Resolved! FDCAN can not start, no clock found

after follow the wiki, the can0(m_can2) can not start up on stm32mp157d-dk1root@stm32mp1:~# dmesg | grep can[ 0.384348] can: controller area network core[ 0.384666] can: raw protocol[ 0.384678] can: broadcast manager protocol[ 0.384695] can: netlink ...

Huibean by Associate II
  • 9 replies
  • 0 kudos

Resolved! FDCAN in normal mode is not working

Hi!I am using the stm32mp157C-DK2 board to communicate via FDCAN and my idea is to use it as normal mode to send and receive CAN messages. For this I have created a program in stm32cubeide and I enable FDCAN1 with the following parameters (125Kb/s): ...

TArre.1 by Associate III
  • 7 replies
  • 0 kudos

How to activate FDCAN in production mode

Dear ST Community,I'm working with fdcan on stm32mp157d-dk1, the fdcan works properly in engineering mode, but i have an issue when in production mode, I found that I have to add the fdcan to the device tree, then I tried to compile the dts generated...

BJlou.1 by Associate II
  • 3 replies
  • 0 kudos

Resolved! How to setup FDCAN on STM32MP157F-DK2?

Hi everyone! I'm here with my devkit and trying to have FDCAN working properly! I compiled the Yocto distribution for the board and I followed all the tutorials in the wiki ( ) and here's what I came up ...

SScar.2 by Associate III
  • 8 replies
  • 0 kudos

Question about custom machine

Hi!I am using a STM32MP157C-DK2 board to create an application on the screen. I have used STM32CubeIDE to create my own program:I have initialized peripheral with its default modeI have enabled FDCAN peripheralI have changed the clock settings.With t...

TArre.1 by Associate III
  • 1 replies
  • 0 kudos

FDCAN in production mode is not working

Hi!I am using a STM32MP157C-DK2 board to communicate via CAN. To do this, I have created a program in STM32CubeIDE and set the FDCAN parameters:Classic mode.150KB/s nominal baud rate.HSE clock source (24MH) I have been testing in engineering mode and...

TArre.1 by Associate III
  • 4 replies
  • 0 kudos

FDCAN filters not working on STM32mp157

HI,I'm not able to get the FDCAN filter working on a STM32MP157C-DT2. I'm able to receive valid ID' with no problem, however, invalid ID's are getting through.Would someone be kind enough to take a quick look at my setup to make sure I did not miss ...

JSpra by Associate III
  • 2 replies
  • 0 kudos

FDCAN not working properly

I am trying to enable FDCAN on STM32MP157C. I modified Linux Kernel (STM32MP15-Ecosystem-v2.0.0) and U-Boot, following the steps explained in the Developer Package guide. I get these messages, which are suggesting I setup everything correctly.root@st...

JYune by Associate II
  • 4 replies
  • 0 kudos