[led_driver] Add XY color control support and update app_driver of light example to handle CurrentX and CurrentY attributes

device_hal/led_driver/gpio/led_driver.c

@@ -105,3 +105,8 @@ esp_err_t led_driver_set_temperature(led_driver_handle_t handle, uint32_t temper
 {
     return ESP_ERR_NOT_SUPPORTED;
 }
+
+esp_err_t led_driver_set_xy(led_driver_handle_t handle, uint16_t x, uint16_t y)
+{
+    return ESP_ERR_NOT_SUPPORTED;
+}

device_hal/led_driver/hollow_led/led_driver.c

@@ -64,3 +64,11 @@ esp_err_t led_driver_set_temperature(led_driver_handle_t handle, uint32_t temper
 
     return ESP_OK;
 }
+
+esp_err_t led_driver_set_xy(led_driver_handle_t handle, uint16_t x, uint16_t y)
+{
+    ESP_LOGI(TAG, "Setting XY to: x=%d, y=%d", x, y);
+    /* Set the XY color coordinates here */
+
+    return ESP_OK;
+}

device_hal/led_driver/include/color_format.h

@@ -29,10 +29,17 @@ typedef struct {
     uint8_t blue;
 } RGB_color_t;
 
+typedef struct {
+    uint16_t x;
+    uint16_t y;
+} XY_color_t;
+
 void temp_to_hs(uint32_t temperature, HS_color_t *HS);
 
 void hsv_to_rgb(HS_color_t HS, uint8_t brightness, RGB_color_t *RGB);
 
+void xy_to_rgb(XY_color_t XY, uint8_t brightness, RGB_color_t *RGB);
+
 #ifdef __cplusplus
 }
 #endif

device_hal/led_driver/include/led_driver.h

@@ -33,6 +33,7 @@ esp_err_t led_driver_set_brightness(led_driver_handle_t handle, uint8_t brightne
 esp_err_t led_driver_set_hue(led_driver_handle_t handle, uint16_t hue);
 esp_err_t led_driver_set_saturation(led_driver_handle_t handle, uint8_t saturation);
 esp_err_t led_driver_set_temperature(led_driver_handle_t handle, uint32_t temperature);
+esp_err_t led_driver_set_xy(led_driver_handle_t handle, uint16_t x, uint16_t y);
 
 #ifdef __cplusplus
 }

device_hal/led_driver/utils/color_format.c

@@ -12,6 +12,7 @@
 // limitations under the License
 
 #include <color_format.h>
+#include <math.h>
 
 void hsv_to_rgb(HS_color_t HS, uint8_t brightness, RGB_color_t *RGB)
 {
@@ -99,3 +100,61 @@ void temp_to_hs(uint32_t temperature, HS_color_t *HS)
     HS->hue = temp_table[(temperature - 600) / 100].hue;
     HS->saturation = temp_table[(temperature - 600) / 100].saturation;
 }
+
+void xy_to_rgb(XY_color_t XY, uint8_t brightness, RGB_color_t *RGB)
+{
+    // Convert Matter xy coordinates (0-65536) to CIE xy coordinates (0.0-1.0)
+    float x = (float)XY.x / 65536.0f;
+    float y = (float)XY.y / 65536.0f;
+    float z = 1.0f - x - y;
+    
+    // Convert brightness (0-255) to Y value (0.0-1.0)
+    float Y = (float)brightness / 255.0f;
+    
+    // Convert from xy to XYZ
+    float X, Z;
+    if (y > 0.0f) {
+        X = (Y / y) * x;
+        Z = (Y / y) * z;
+    } else {
+        X = 0.0f;
+        Z = 0.0f;
+    }
+    
+    // Convert XYZ to RGB using D65 white point matrix
+    float r = X * 3.240479f - Y * 1.537150f - Z * 0.498535f;
+    float g = -X * 0.969256f + Y * 1.875992f + Z * 0.041556f;
+    float b = X * 0.055648f - Y * 0.204043f + Z * 1.057311f;
+    
+    // Apply reverse gamma correction
+    if (r <= 0.0031308f) {
+        r = 12.92f * r;
+    } else {
+        r = (1.0f + 0.055f) * powf(r, (1.0f / 2.4f)) - 0.055f;
+    }
+    
+    if (g <= 0.0031308f) {
+        g = 12.92f * g;
+    } else {
+        g = (1.0f + 0.055f) * powf(g, (1.0f / 2.4f)) - 0.055f;
+    }
+    
+    if (b <= 0.0031308f) {
+        b = 12.92f * b;
+    } else {
+        b = (1.0f + 0.055f) * powf(b, (1.0f / 2.4f)) - 0.055f;
+    }
+    
+    // Clamp values to [0, 1] range
+    if (r < 0.0f) r = 0.0f;
+    if (r > 1.0f) r = 1.0f;
+    if (g < 0.0f) g = 0.0f;
+    if (g > 1.0f) g = 1.0f;
+    if (b < 0.0f) b = 0.0f;
+    if (b > 1.0f) b = 1.0f;
+    
+    // Convert to 0-255 range
+    RGB->red = (uint8_t)(r * 255.0f);
+    RGB->green = (uint8_t)(g * 255.0f);
+    RGB->blue = (uint8_t)(b * 255.0f);
+}

device_hal/led_driver/vled/led_driver.c

@@ -196,3 +196,11 @@ esp_err_t led_driver_set_temperature(led_driver_handle_t handle, uint32_t temper
     hsv_to_rgb(current_HS, brightness, &mRGB);
     return led_driver_set_RGB(handle);
 }
+
+esp_err_t led_driver_set_xy(led_driver_handle_t handle, uint16_t x, uint16_t y)
+{
+    uint8_t brightness = current_power ? current_brightness : 0;
+    XY_color_t xy_color = {x, y};
+    xy_to_rgb(xy_color, brightness, &mRGB);
+    return led_driver_set_RGB(handle);
+}

device_hal/led_driver/ws2812/led_driver.c

@@ -114,3 +114,11 @@ esp_err_t led_driver_set_temperature(led_driver_handle_t handle, uint32_t temper
     hsv_to_rgb(current_HS, brightness, &mRGB);
     return led_driver_set_RGB(handle);
 }
+
+esp_err_t led_driver_set_xy(led_driver_handle_t handle, uint16_t x, uint16_t y)
+{
+    uint8_t brightness = current_power ? current_brightness : 0;
+    XY_color_t xy_color = {x, y};
+    xy_to_rgb(xy_color, brightness, &mRGB);
+    return led_driver_set_RGB(handle);
+}