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Zeevi.Ariel
Zeevi.Ariel
Associate
April 11, 2019
Solved

multi drop

  • April 11, 2019
  • 4 replies
  • 1429 views

Does the STM32F7 supports the USART multi drop mode ?

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Best answer by Tesla DeLorean

Yes, the STM32 has a 9-bit mode, and I think some have an address matching functionality. It is not a mode I use, but I think it is covered in the reference manual

4 replies

Tesla DeLorean
Tesla DeLorean
Guru
April 11, 2019

Do you mean a single-wire/RS485 type thing, or a 9-bit multi-processor/8051 mode?

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Zeevi.Ariel
Zeevi.ArielAuthor
Associate
April 11, 2019

i mean the 9 bit multi processor/8051 mode.

Tesla DeLorean
Tesla DeLoreanBest answer
Guru
April 11, 2019

Yes, the STM32 has a 9-bit mode, and I think some have an address matching functionality. It is not a mode I use, but I think it is covered in the reference manual

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Zeevi.Ariel
Zeevi.ArielAuthor
Associate
April 15, 2019

Thanks for your answer. I know there is option of 9 bits, but it seems that the chip I use STM32F767II does not support the address matching functionality. What we did, we add the sign of address byte manually to the first byte of each message.

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