STM32F4 I2C DMA1 & UART DMA1 A SAME STREAM IS IT AVAILABLE?

[mkim.51]

I'm using an STM32F411 chip.

and it is trying to use the DMA function of UART2 and I2C3.

there are same DMA1 bus line.

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at that time,

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Is it available when both functions try to work at the same time? 

Does Stm32 handle itself? 

If so, what is the priority?

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I have implemented the DMA function for UART2. 

However, I am currently not able to implement I2C DMA function continuously. 

We have not tested the two for the same time. 

but, In the end, I have to use those two functions at the same time.

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my email is [e-mail] ​

thank you.

[Tesla DeLorean]

They all use different Streams, so should all function concurrently

[mkim.51]

thank you for your reply.

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I lacked understanding of the stream.

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what if I use I2C3_RX and UART4_RX DMA?

at that time i use same stream..

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still no problem?? ​

[waclawek.jan]

> what if I use I2C3_RX and UART4_RX DMA?

You can't.

JW

[mkim.51]

thank you