devicePath method
Device path - mraa_uart_get_dev_path
Get the tty device path, for example "/dev/ttyS0"
Implementation
String devicePath(MraaUartContext dev) =>
_impl.mraa_uart_get_dev_path(dev) == nullptr
? ''
: _impl.mraa_uart_get_dev_path(dev).cast<ffi.Utf8>().toDartString();