Added NewDistSinceDTCClear command (0x31) - distance since last DTC c…

…lear

Added mocked responses for Fuel and Speed

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## [0.6.0] - 2019-03-20
+
+### Fixed 
+- issue #18 - commands expect one byte as response - mocked device returned three bytes
+
+### Added
+- `NewDistSinceDTCClear` command (0x31) - distance since last DTC clear
+- mocked responses for Fuel (0x2F), Speed (0x0D)
+
 ## [0.5.1] - 2018-08-15
 
 ### Changed

README.org

@@ -374,7 +374,8 @@ The library has been built and tested on the following platforms:
 
 The library has been used successfully on the following cars:
 
-| Car                     | Library version | Tester       |
-|-------------------------+-----------------+--------------|
-| Lexus IS200 Manual 2004 |           0.3.0 | @rzetterberg |
-| Ford Ka 2011            |           0.5.0 | @Enrico204   |
+| Car                       | Library version | Tester       |
+|---------------------------+-----------------+--------------|
+| Lexus IS200 Manual 2004   |           0.3.0 | @rzetterberg |
+| Ford Ka 2011              |           0.5.0 | @Enrico204   |
+| Ford Transit Automat 2019 |			0.6.0 | @mikspec	 |

commands.go

@@ -243,6 +243,36 @@ func (cmd *Fuel) SetValue(result *Result) error {
 	return nil
 }
 
+// DistSinceDTCClear represents a command that checks distance since last DTC clear
+//
+// Min: 0
+// Max: 65535
+type DistSinceDTCClear struct {
+	BaseCommand
+	UIntCommand
+}
+
+// NewDistSinceDTCClear creates a new commend distance since DTC clear with the correct parameters.
+func NewDistSinceDTCClear() *DistSinceDTCClear {
+	return &DistSinceDTCClear{
+		BaseCommand{0x31, 2, "dist_since_dtc_clean"},
+		UIntCommand{},
+	}
+}
+
+// SetValue processes the byte array value into the right uint value.
+func (cmd *DistSinceDTCClear) SetValue(result *Result) error {
+	payload, err := result.PayloadAsUInt16()
+
+	if err != nil {
+		return err
+	}
+
+	cmd.Value = uint32(payload)
+
+	return nil
+}
+
 // CoolantTemperature represents a command that checks the engine coolant
 // temperature in Celsius.
 //

device_test.go

@@ -44,6 +44,7 @@ func TestToCommand(t *testing.T) {
 	assertEqual(t, NewPart1Supported().ToCommand(), "01001")
 	assertEqual(t, NewEngineLoad().ToCommand(), "01041")
 	assertEqual(t, NewVehicleSpeed().ToCommand(), "010D1")
+	assertEqual(t, NewDistSinceDTCClear().ToCommand(), "01311")
 }
 
 func TestIsSupported(t *testing.T) {
@@ -170,6 +171,10 @@ func TestParseOBDResponse(t *testing.T) {
 				"41 00 01 02 03 04",
 			},
 		},
+		{
+			NewDistSinceDTCClear(),
+			[]string{"41 31 02 33"},
+		},
 	}
 
 	for _, curr := range scenarios {

mockdevice.go

@@ -122,6 +122,10 @@ func mockMode1Outputs(subcmd string) []string {
 		return []string{
 			"41 0D 4B",
 		}
+	} else if strings.HasPrefix(subcmd, "31") {
+		return []string{
+			"41 31 02 0C",
+		}
 	}
 
 	return []string{"NOT SUPPORTED"}