101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
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#ifndef uint8
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#define uint8 unsigned char
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#endif
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typedef struct
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{
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int cs, a0, rs;
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uint8 width, height;
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} lcd_t;
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/*
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* Initialize the display and create a data structure for it.
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* The last initialized display is active.
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*
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* Parameters:
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* spiSpeed - Speed of the SPI interface.
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* cs - Chip selection pin.
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* a0 - Data/Command pin.
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* rs - Optional reset pin. If you do not use it, enter -1.
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*
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* Return: Pointer to the structure with display data.
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*
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*/
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lcd_t *lcd_init(int spiSpeed, int cs, int a0, int rs);
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/*
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* Reset the specified display and clear the previously assigned memory.
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*
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* Parameters:
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* display - Pointer to the structure with display data.
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*
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* Return: void
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*/
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void lcd_deinit(lcd_t *display);
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/*
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* Set the drawing area on the currently active display.
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*
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* Parameters:
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* x1 - The X parameter of the first point.
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* y1 - The Y parameter of the first point.
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* x2 - The X parameter of the second point.
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* y2 - The Y parameter of the second point.
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*
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* Return: Confirmation of the occurrence or non-occurrence of an error.
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* 0 - The error did not occur; 1 - The error occurred.
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*
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*/
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uint8 lcd_setWindow(uint8 x1, uint8 y1, uint8 x2, uint8 y2);
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/*
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* Draw one pixel on the currently active display.
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* The color intensity scale for a normal pixel is from 0 to 255.
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* The color intensity scale for the reduced pixel is from 0 to 15.
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*
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* Parameters:
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* x - The X parameter of the pixel.
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* y - The Y parameter of the pixel.
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* r - The intensity of the red color.
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* g - The intensity of the green color.
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* b - The intensity of the blue color.
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*
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* Return: void
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*/
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void lcd_drawPx(uint8 x, uint8 y, uint8 r, uint8 g, uint8 b);
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/*
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* Draw a filled rectangle on the currently active display.
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* The color intensity scale for a normal pixel is from 0 to 255.
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* The color intensity scale for the reduced pixel is from 0 to 15.
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*
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* Parameters:
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* x - Parameter X of the upper left corner of the rectangle.
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* y - Parameter Y of the upper left corner of the rectangle.
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* w - The width of the rectangle.
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* h - The height of the rectangle.
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* r - The intensity of the red color.
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* g - The intensity of the green color.
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* b - The intensity of the blue color.
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*
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* Return: void
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*/
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void lcd_fillRect(uint8 x, uint8 y, uint8 w, uint8 h, uint8 r, uint8 g, uint8 b);
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/*
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* Fill the entire screen with one color of the currently active display.
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* The color intensity scale for a normal pixel is from 0 to 255.
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* The color intensity scale for the reduced pixel is from 0 to 15.
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*
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* Parameters:
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* r - The intensity of the red color.
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* g - The intensity of the green color.
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* b - The intensity of the blue color.
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*
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* Return: void
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*/
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void lcd_fillScreen(uint8 r, uint8 g, uint8 b);
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void lcd_printChar(uint8 x, uint8 y, char c);
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void lcd_printText(uint8 x, uint8 y, char* text);
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