Improve command response reading

src/at_commands.rs

@@ -88,7 +88,7 @@ impl<'a, 'd> ATCommands<'a, 'd> {
         }
         self.uart.flush().unwrap();
 
-        self.read_response(format!("> {}", text))
+        self.read_response(command)
     }
 
     pub fn readline(&mut self) -> Option<String> {