ssd1331_fillRect.c

/*
 * @file ssd1331_drawLine.c
 *
 * @author Matthew Matz
 *
 * @version 0.9
 *
 * @copyright Copyright (C) Parallax, Inc. 2019.  See end of file for
 * terms of use (MIT License).
 *
 * @brief 0.96-inch RGB OLED display bitmap driver, see ssd1331_h. for documentation.
 *
 * @detail Please submit bug reports, suggestions, and improvements to
 * this code to editor@parallax.com.
 */


#include "ssd1331.h"


void ssd1331_fillRect(screen_t* dev, int x0, int y0, int x1, int y1, int color) {
  int mask_cs =  (1 << dev->dev_id);
  int mask_sdi = (1 << dev->sdi_pin);
  int mask_clk = (1 << dev->clk_pin);
  int mask_dc =  (1 << dev->dc_pin);

  ssd1331_writeLockSet(dev->dev_id);

  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, SSD1331_CMD_FILL, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, 1, 0);
  
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, SSD1331_CMD_DRAWRECT, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, x0, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, y0, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, x1, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, y1, 0);

  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, (color >> 11) << 1, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, (color >> 5) & 0x3F, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, (color << 1) & 0x3F, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, (color >> 11) << 1, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, (color >> 5) & 0x3F, 0);
  ssd1331_writeByte(mask_cs, mask_sdi, mask_clk, mask_dc, (color << 1) & 0x3F, 0);

  // TODO: is this necessary?
  int _tMark = CNT + (CLKFREQ / 4000);
  while(_tMark > CNT);                          // Wait for system clock target

  ssd1331_writeLockClear(dev->dev_id);
}


void ssd1331_clearDisplay(screen_t* dev) {
  ssd1331_fillRect(dev, 0, 0, dev->width - 1, dev->height - 1, 0);
}