Hi, According to the following document, it looks like K210 has 16550 compatible UART for UART1/2/3. https://github.com/laanwj/k210-sdk-stuff/blob/master/doc/memory_map.md
This means that you can use nuttx/drivers/serial/uart_16550.c On Tue, Sep 20, 2022 at 10:26 PM prelude <wgz_z...@163.com> wrote: > K210 can only use UART0 at present. I would like to ask my friends, who > has the driver code for UART1-UART3? The current project needs to use it. > It is too difficult to transplant from the official code of K210. > > > > >