For an STM32F427 / STM32F429 MCU is UART supported with 0.5 Stop Bit and DMA enabled configuration???
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‎2018-12-27 7:15 PM
I am using an STM32F429FI Nucleo board, and not able to communicate over UART with the confiiguration having 0.5 Stop bits and DMA being enabled.
Is this a valid configuration? Data sheet suggests use of 0.5 Stop bits with SmartCard mode does it mean it is not supported for regular mode of UART communication
- Labels:
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DMA
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STM32F4 Series
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UART-USART
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‎2018-12-27 10:30 PM
DMA gets request from peripheral to read/write data bytes. The stop bits are not involved.
Beware smartcard needs USART and not UART. Find a working example to look at the HW registers setting in debug mode and compare.
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‎2018-12-28 1:40 AM
General rule is that if it works in polled mode it can also be done with DMA.
Doesn't work how? Can out output a pattern, and does it look correct on scope or analyzer? If not show or describe how it is wrong..​
Up vote any posts that you find helpful, it shows what's working..
