2020-03-29 11:24 AM
Hi when I create the USART2 and USART3 under LL using DMA the field
GPIO_InitStruct.Mode = LL_GPIO_MODE_FLOATING;
and will be
GPIO_InitStruct.Mode = LL_GPIO_MODE_INPUT;
the USART1 work fine
thanks
2020-03-29 11:46 AM
This is 'F1, isn't it. You should always state the STM32 model you are using.
_FLOATING is input, too, except without pullup/pulldown. I'd bet you enabled pullup with USART1.
JW