acassis commented on issue #7150:
URL: 
https://github.com/apache/incubator-nuttx/issues/7150#issuecomment-1254815960

   @SrivamsiMalladi you don't need to create a esp32_uart_driver.c because the 
uart driver is already created inside arch/xtensa/! All you need to do it use 
the device from userspace. So, your application will open the /dev/ttyS1 
(because /dev/ttyS0 is used as console) and read/write to it. This is the same 
way as things works on Linux, FreeBSD, MacOS, etc. Search inside apps/ and you 
will find a lot of examples.


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