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uart dma transmission issue

AMuru.1
Associate

i am using stm32h743 microcontroller ,in this i am working on the uart in dma mode for receiver i am using circular mode and for transmitter i am using normal mode. the communication is working in the first time , when i am trying to transmit the data next time i am facing the issue "HAL_UART_STATE_BUSY_TX" after that i can't transmit any data. please help me to solve the issue would be appreciated.

1 REPLY 1

Read out and check UART registers content, compare to working case.

JW