Function esp_idf_sys::esp_vfs_dev_uart_use_nonblocking

pub unsafe extern "C" fn esp_vfs_dev_uart_use_nonblocking(
    uart_num: c_int
)

@brief set VFS to use simple functions for reading and writing UART Read is non-blocking, write is busy waiting until TX FIFO has enough space. These functions are used by default. @param uart_num UART peripheral number