From e480efa519da8702d2e737c4f4b94eefc05d5246 Mon Sep 17 00:00:00 2001
From: mobilarte <martin@maxsyma.com>
Date: Tue, 28 May 2024 22:33:52 +0200
Subject: [PATCH] Added DPT 232.600

---
 knx/dpt/formats.go        | 17 ++++++++++++++++
 knx/dpt/types_232.go      | 41 +++++++++++++++++++++++++++++++++++++++
 knx/dpt/types_232_test.go | 27 ++++++++++++++++++++++++++
 3 files changed, 85 insertions(+)
 create mode 100644 knx/dpt/types_232.go
 create mode 100644 knx/dpt/types_232_test.go

diff --git a/knx/dpt/formats.go b/knx/dpt/formats.go
index df887d9..49ab116 100644
--- a/knx/dpt/formats.go
+++ b/knx/dpt/formats.go
@@ -121,6 +121,23 @@ func unpackU8[T ~uint8](data []byte, i *T) error {
 	return nil
 }
 
+// func pack3U8[T ~uint8](u2 T, u1 T, u0 T) []byte {
+func pack3U8(u2 uint8, u1 uint8, u0 uint8) []byte {
+	return []byte{0, uint8(u2), uint8(u1), uint8(u0)}
+}
+
+// func unpack3U8[T ~uint8](data []byte, u []T) error {
+func unpack3U8(data []byte, u2 *uint8, u1 *uint8, u0 *uint8) error {
+	if len(data) != 4 {
+		return ErrInvalidLength
+	}
+	*u2 = uint8(data[1])
+	*u1 = uint8(data[2])
+	*u0 = uint8(data[3])
+
+	return nil
+}
+
 func packV8[T ~int8](i T) []byte {
 	return []byte{0, byte(i)}
 }
diff --git a/knx/dpt/types_232.go b/knx/dpt/types_232.go
new file mode 100644
index 0000000..cf2a966
--- /dev/null
+++ b/knx/dpt/types_232.go
@@ -0,0 +1,41 @@
+package dpt
+
+import (
+	"fmt"
+)
+
+// DPT_232600 represents DPT 232.600 (G) / DPT_Colour_RGB.
+// Colour RGB - RGB value 4x(0..100%) / U8 U8 U8
+type DPT_232600 struct {
+	Red   uint8
+	Green uint8
+	Blue  uint8
+}
+
+func (d DPT_232600) Pack() []byte {
+
+	return pack3U8(d.Red, d.Green, d.Blue)
+}
+
+func (d *DPT_232600) Unpack(data []byte) error {
+
+	if len(data) != 4 {
+		return ErrInvalidLength
+	}
+
+	err := unpack3U8(data, &d.Red, &d.Green, &d.Blue)
+
+	if err != nil {
+		return ErrInvalidLength
+	}
+
+	return nil
+}
+
+func (d DPT_232600) Unit() string {
+	return ""
+}
+
+func (d DPT_232600) String() string {
+	return fmt.Sprintf("%d %d %d", d.Red, d.Green, d.Blue)
+}
diff --git a/knx/dpt/types_232_test.go b/knx/dpt/types_232_test.go
new file mode 100644
index 0000000..f527fc7
--- /dev/null
+++ b/knx/dpt/types_232_test.go
@@ -0,0 +1,27 @@
+package dpt
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+func TestDPT_232600(t *testing.T) {
+	var buf []byte
+	var dst DPT_232600
+	sources := []DPT_232600{
+		{Red: 255, Green: 96, Blue: 0},
+		{Red: 0, Green: 128, Blue: 128},
+	}
+
+	for _, src := range sources {
+		buf = src.Pack()
+		_ = dst.Unpack(buf)
+
+		if !reflect.DeepEqual(src, dst) {
+			fmt.Printf("%+v\n", src)
+			fmt.Printf("%+v\n", dst)
+			t.Errorf("Value [%s] after pack/unpack for DPT_232600 differs. Original value was [%v].", dst, src)
+		}
+	}
+}