Time Triggered CAN communication support

[vinay bhat]

I am currently in a process of selecting micro controller for my project. Basically i need TTCAN support and i have STM32F746G Disco board with me. Now as per the ST reference manual i see that this is supported. Now my questions are...

1. Is there any reference available for TTCAN implementation?
2. If the HW supports TTCAN, can i completely rely on HW module?

ex: who will generate reference message(defined in TTCAN spec) ? HW or my SW?

3.Can i make STM32F746G as master of my TTCAN cluster ?

Unfortunately i could not find much details in the internet and the ST reference manual. If anybody has prior knowledge of working on this topic please do respond.

Thanks :| !!

[Uwe Bonnes · Accepted solution]

Read the errata sheets. Since the first STM32 up to the STM32F76 there is an item:

"BxCAN time triggered mode not supported . "

[vinay bhat]

Oh yes. I verified it. Thanks for saving my time and effort. BTW, is there any other MCU in ST which support TTCAN ?

[Uwe Bonnes]

STM32H7 and STM32L5.

https://www.st.com/content/st_com/en/products/microcontrollers/stm32-32-bit-arm-cortex-mcus/stm32-mainstream-mcus/stm32g0-series.html?querycriteria=productId=SS1960

tells that STM32G0x1 has FDCAM too, but rm0444 does not know about FDCAN.

[vinay bhat]

Unfortunately, FDCAN does'nt serve the purpose !!.

do you know if ST has fixed this errata in subsequent HW releases? Ex: STM32F76. I cannot find any official Errata sheet for STM32F76x in ST websites.

[kacem.halim]

CAN FD implemented in new STM32 MCU can be used as classic CAN, based on that you can use TTCAN.