Basic setting of USART2: DMA Transfer and receive via interrupt as RS485.
As long as only DMA transfer is ongoing, all will be ok. At first time a receive interrupt will occur, the transmit will trigger an interrupt, even though no TXEIE is set. This crashes the system
The same settings for UART5 and USART3: there it works fine without problems (RS232 or RS485).
Whats going wrong, or some errata for this behavior?
MCU type: STM32F756
