[tuya] add color_type_lowercase option (#13101)

Co-authored-by: lullius <>

esphome/components/tuya/light/__init__.py

@@ -26,6 +26,7 @@ CONF_RGB_DATAPOINT = "rgb_datapoint"
 CONF_HSV_DATAPOINT = "hsv_datapoint"
 CONF_COLOR_DATAPOINT = "color_datapoint"
 CONF_COLOR_TYPE = "color_type"
+CONF_COLOR_TYPE_LOWERCASE = "color_type_lowercase"
 
 TuyaColorType = tuya_ns.enum("TuyaColorType")
 
@@ -47,6 +48,7 @@ CONFIG_SCHEMA = cv.All(
             cv.Optional(CONF_SWITCH_DATAPOINT): cv.uint8_t,
             cv.Inclusive(CONF_COLOR_DATAPOINT, "color"): cv.uint8_t,
             cv.Inclusive(CONF_COLOR_TYPE, "color"): cv.enum(COLOR_TYPES, upper=True),
+            cv.Optional(CONF_COLOR_TYPE_LOWERCASE, default=False): cv.boolean,
             cv.Optional(CONF_COLOR_INTERLOCK, default=False): cv.boolean,
             cv.Inclusive(
                 CONF_COLOR_TEMPERATURE_DATAPOINT, "color_temperature"
@@ -91,6 +93,7 @@ async def to_code(config):
     if CONF_COLOR_DATAPOINT in config:
         cg.add(var.set_color_id(config[CONF_COLOR_DATAPOINT]))
         cg.add(var.set_color_type(config[CONF_COLOR_TYPE]))
+        cg.add(var.set_color_type_lowercase(config[CONF_COLOR_TYPE_LOWERCASE]))
     if CONF_COLOR_TEMPERATURE_DATAPOINT in config:
         cg.add(var.set_color_temperature_id(config[CONF_COLOR_TEMPERATURE_DATAPOINT]))
         cg.add(var.set_color_temperature_invert(config[CONF_COLOR_TEMPERATURE_INVERT]))

esphome/components/tuya/light/tuya_light.cpp

@@ -190,7 +190,8 @@ void TuyaLight::write_state(light::LightState *state) {
     switch (*this->color_type_) {
       case TuyaColorType::RGB: {
         char buffer[7];
-        sprintf(buffer, "%02X%02X%02X", int(red * 255), int(green * 255), int(blue * 255));
+        const char *format_str = this->color_type_lowercase_ ? "%02x%02x%02x" : "%02X%02X%02X";
+        sprintf(buffer, format_str, int(red * 255), int(green * 255), int(blue * 255));
         color_value = buffer;
         break;
       }
@@ -199,7 +200,8 @@ void TuyaLight::write_state(light::LightState *state) {
         float saturation, value;
         rgb_to_hsv(red, green, blue, hue, saturation, value);
         char buffer[13];
-        sprintf(buffer, "%04X%04X%04X", hue, int(saturation * 1000), int(value * 1000));
+        const char *format_str = this->color_type_lowercase_ ? "%04x%04x%04x" : "%04X%04X%04X";
+        sprintf(buffer, format_str, hue, int(saturation * 1000), int(value * 1000));
         color_value = buffer;
         break;
       }
@@ -208,8 +210,9 @@ void TuyaLight::write_state(light::LightState *state) {
         float saturation, value;
         rgb_to_hsv(red, green, blue, hue, saturation, value);
         char buffer[15];
-        sprintf(buffer, "%02X%02X%02X%04X%02X%02X", int(red * 255), int(green * 255), int(blue * 255), hue,
+        const char *format_str = this->color_type_lowercase_ ? "%02x%02x%02x%04x%02x%02x" : "%02X%02X%02X%04X%02X%02X";
-                int(saturation * 255), int(value * 255));
+        sprintf(buffer, format_str, int(red * 255), int(green * 255), int(blue * 255), hue, int(saturation * 255),
+                int(value * 255));
         color_value = buffer;
         break;
       }

esphome/components/tuya/light/tuya_light.h

@@ -7,11 +7,7 @@
 namespace esphome {
 namespace tuya {
 
-enum TuyaColorType {
+enum TuyaColorType { RGB, HSV, RGBHSV };
-  RGB,
-  HSV,
-  RGBHSV,
-};
 
 class TuyaLight : public Component, public light::LightOutput {
  public:
@@ -28,6 +24,7 @@ class TuyaLight : public Component, public light::LightOutput {
   void set_color_temperature_invert(bool color_temperature_invert) {
     this->color_temperature_invert_ = color_temperature_invert;
   }
+  void set_color_type_lowercase(bool color_type_lowercase) { this->color_type_lowercase_ = color_type_lowercase; }
   void set_tuya_parent(Tuya *parent) { this->parent_ = parent; }
   void set_min_value(uint32_t min_value) { min_value_ = min_value; }
   void set_max_value(uint32_t max_value) { max_value_ = max_value; }
@@ -63,6 +60,7 @@ class TuyaLight : public Component, public light::LightOutput {
   float cold_white_temperature_;
   float warm_white_temperature_;
   bool color_temperature_invert_{false};
+  bool color_type_lowercase_{false};
   bool color_interlock_{false};
   light::LightState *state_{nullptr};
 };

tests/components/tuya/common.yaml

@@ -38,11 +38,14 @@ light:
     dimmer_datapoint: 2
     min_value_datapoint: 3
     color_temperature_datapoint: 4
+    color_datapoint: 5
     min_value: 1
     max_value: 100
     cold_white_color_temperature: 153 mireds
     warm_white_color_temperature: 500 mireds
     gamma_correct: 1
+    color_type: RGB
+    color_type_lowercase: true
 
 number:
   - platform: tuya