Merge "floss: fix +IPHONEACCEV battery percent calculation" into main

        Some(data) => {

            match data.get(&AtCommandDataType::IPhoneAccevBatteryLevel) {

                Some(battery_level) => match battery_level.parse::<u32>() {

                    Ok(level) => return Ok(level * 10),

                    // The Apple Accessory Design Guidelines indicate

                    // this will be a value in the range [0, 9]. The

                    // guidelines do not specify that this maps to

                    // [10, 100] but that is how other Bluetooth

                    // stacks interpret it so we do so as well.

                    // See https://developer.apple.com/accessories/Accessory-Design-Guidelines.pdf

                    // Section 27.1 HFP Command AT+IPHONEACCEV

                    Ok(level) => return Ok((level + 1) * 10),

                    Err(e) => return Err(e.to_string()),

                },

                None => (),

        let at_command = parse_at_command_data("AT+IPHONEACCEV=1,1,2".to_string());

        assert!(!at_command.is_err());

        let battery_level = calculate_battery_percent(at_command.unwrap()).unwrap();

        assert_eq!(battery_level, 20);

        assert_eq!(battery_level, 30);

        // Plantronics - missing args

        let at_command = parse_at_command_data("AT+XEVENT=BATTERY".to_string());