[F407VGT6] LL DMA USART sends "wrong" number of bytes
I'm trying to migrate my project from HAL to LL. I use USART+DMA. Reception is OK, but transmission is not.There's a uint8_t transmission buffer. E.g. it begins with {1, 2, 3, 4}.When I set DMA data length to 1, nothing is sentWhen I set data length ...