implement some features of Venus OS

mk2driver/mockmk2.go

@@ -98,6 +98,18 @@ func (m *mock) WriteRAMVarByID(_ uint16, _ int16) error {
 	return nil
 }
 
+func (m *mock) WriteSelectedData(_ int16) error {
+	return nil
+}
+
+func (m *mock) WriteSettingBySelection(_ uint16, _ int16) error {
+	return nil
+}
+
+func (m *mock) WriteRAMVarBySelection(_ uint16, _ int16) error {
+	return nil
+}
+
 func (m *mock) genMockValues() {
 	mult := 1.0
 	ledState := LedOff