Add lcd_set_bg_color_layer0

docs/lcd_api.md

@@ -104,7 +104,7 @@ void main(void) {
 #### Drawing text on the screen
 
 ```c
-void lcd_display_text(const char* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, sFONT *font);
+void lcd_display_text(const char* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, uint32_t bg_color, sFONT *font);
 ```
 
 ```c
@@ -116,7 +116,7 @@ void main(void) {
     ...
     lcd_init(true);
     ...
-    lcd_display_text("This is a text string.", 10, 10, LCD_GREEN, LCD_FONT16);
+    lcd_display_text("This is a text string.", 10, 10, LCD_GREEN, LCD_BLACK, LCD_FONT16);
 }
 ```
 Display text on the LCD screen in a certain color. When text width exceeds BSP_LCD_GetXSize(), a text wrap will be performed. If the text wrap is between two will be injected.
@@ -279,3 +279,20 @@ void main(void) {
 ```
 
 Clears all text strings on the LCD screen.
+
+#### Clearing (background/images) layer 0 to color
+```c
+void lcd_set_bg_color_layer0(uint32_t color);
+```
+
+```c
+#include "lcd_api.h"
+
+void main(void) {
+  ...
+  lcd_init(true);
+  lcd_draw_img_from_fs("st.bmp", 300, 100);
+  ...
+  lcd_set_bg_color_layer0(LCD_BLACK);
+}
+```

project/Core/Inc/lcd_api.h

@@ -96,13 +96,16 @@ void lcd_task(void);
  * a text wrap will be performed. If the text wrap is between two letters in a word, the '-' character
  * will be injected.
  *
+ * @note When bg_color 0 is passed as a parameter, the background for the text will be transparent
+ *
  * @param[in] text     C-style text string to display on the LCD screen
  * @param[in] x_pos    X-position
  * @param[in] y_pos    Y-position
  * @param[in] color    Color in which the text will be displayed, see preset colors in defines above
+ * @param[in] bg_color Text background color
  * @param[in] font     Font size, see defines above in file
  */
-void lcd_display_text(const char* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, sFONT *font);
+void lcd_display_text(const char* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, uint32_t bg_color, sFONT *font);
 
 /**
  * @brief Draw BMP image on screen
@@ -156,6 +159,14 @@ void lcd_clear_text(void);
  */
 void lcd_clear_images(void);
 
+/**
+ * @brief Set background color of layer 0
+ * Sets the layer 0 color
+ *
+ * @param[in] color  Color of layer 0 (images layer)
+ */
+void lcd_set_bg_color_layer0(uint32_t color);
+
 /**
  * @brief LCD stop all GIFs
  * Stops all playing GIFs on lcd screen

project/Core/Src/lcd_api.c

@@ -84,7 +84,7 @@ void lcd_task(void) {
     }
 }
 
-void lcd_display_text(const char* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, sFONT* font) {
+void lcd_display_text(const char* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, uint32_t bg_color, sFONT* font) {
     BSP_LCD_SelectLayer(1);
     LOG_INFO(TAG, "Display text: %s @x=%d,y=%d", text, x_pos, y_pos);
 
@@ -94,7 +94,7 @@ void lcd_display_text(const char* text, uint16_t x_pos, uint16_t y_pos, uint32_t
     }
 
     BSP_LCD_SetTextColor(color);
-    BSP_LCD_SetBackColor(0);
+    BSP_LCD_SetBackColor(bg_color);
     BSP_LCD_SetFont(font);
 
     if (tot_length > BSP_LCD_GetXSize()) {
@@ -186,6 +186,11 @@ void lcd_clear_images(void) {
     BSP_LCD_Clear(0);
 }
 
+void lcd_set_bg_color_layer0(uint32_t color){
+    BSP_LCD_SelectLayer(0);
+    BSP_LCD_Clear(color);
+}
+
 void lcd_stop_all_gifs(void) {
     for (uint8_t i = 0; i < LCD_MAX_GIFS; i++) {
         if (gifs[i].src != NULL) {

project/Core/Src/tftp.c

@@ -167,7 +167,7 @@ void tftp_close(void* handle) {
     if (handle == &virt_file[VIRT_TEXT_TXT]) {
         lcd_clear_images();
         lcd_clear_text();
-        lcd_display_text((uint8_t*)virt_file[VIRT_TEXT_TXT].data, 0, 0, LCD_COLOR_WHITE, LCD_FONT16);
+        lcd_display_text((uint8_t*)virt_file[VIRT_TEXT_TXT].data, 0, 0, LCD_COLOR_WHITE, 0, LCD_FONT16);
     }
 
     if (handle == &virt_file[VIRT_INDEX_TXT] || handle == &virt_file[VIRT_IMAGE_BMP]