linux-st7735/spilcd.h

#ifndef uint8
#define uint8 unsigned char
#endif

#ifndef __SPILCD_H__
#define __SPILCD_H__
typedef struct
{
	int channel;
	int cs, a0, rs;
	uint8 width, height;
} lcd_t;

/*
 * Initialize the display.
 *
 * Parameters:
 *   spiSpeed - Speed of the SPI interface.
 *   channel - SPI channel
 *   cs - Chip selection pin.
 *   a0 - Data/Command pin.
 *   rs - Optional reset pin. Use -1 when not connected.
 *
 * Return: Pointer to the structure with display data.
 *
 */
lcd_t *lcd_init(int spiSpeed, int channel, int cs, int a0, int rs);

/*
 * Reset the specified display and clear the previously assigned memory.
 *
 * Parameters:
 *   lcd - display to use
 *
 * Return: void
 */
void lcd_deinit(lcd_t *lcd);

/*
 * Set the drawing area.
 *
 * Parameters:
 *   lcd - display to use
 *   x1 - The X parameter of the starting point.
 *   y1 - The Y parameter of the starting point.
 *   x2 - The X parameter of the ending point.
 *   y2 - The Y parameter of the ending point.
 *
 * Return: 0 for success, 1 for error.
 *
 */
uint8 lcd_setWindow(lcd_t* lcd, uint8 x1, uint8 y1, uint8 x2, uint8 y2);

/*
 * Push a pixel into the previously set drawing area.
 *
 * Parameters:
 *   lcd - display to use
 *   r - red color (0 to 255)
 *   g - green color (0 to 255)
 *   b - blue color (0 to 255)
 */
void lcd_pushPixel(lcd_t* lcd, uint8 r, uint8 g, uint8 b);

/*
 * Push a 'transparent' pixel into the previously set drawing area.
 * Requires buffering to be enabled.
 *
 * Parameters:
 *   lcd - display to use
 */
void lcd_pushPixelSkip(lcd_t* lcd);

/*
 * Push an array of pixels into the previously set drawing area.
 * Significantly faster than pushing pixels individually.
 *
 * Parameters:
 *   lcd - display to use
 *   pixels - array of pixels where:
 *   		pixels[i * 3 + 0] = i-th red color (0 to 255)
 *   		pixels[i * 3 + 1] = i-th green color (0 to 255)
 *   		pixels[i * 3 + 2] = i-th blue color (0 to 255)
 *   count - number of pixels in the array
 */
void lcd_pushPixels(lcd_t* lcd, uint8* pixels, size_t count);

void lcd_redrawBuffer(lcd_t* lcd);

#endif // __SPILCD_H__