Function esp_idf_svc::sys::esp_vfs_dev_uart_use_driver

pub unsafe extern "C" fn esp_vfs_dev_uart_use_driver(uart_num: i32)

@brief set VFS to use UART driver for reading and writing @note application must configure UART driver before calling these functions With these functions, read and write are blocking and interrupt-driven. @param uart_num UART peripheral number