Subversion Repositories openmsp430

#include "demo.h"
#include "timerA.h"
#include "gfx_controller.h"
 
//---------------------------------------------------//
// 8BPP DEMO
//---------------------------------------------------//
void demo_4bpp(void) {
 
  unsigned int  lfsr;
  unsigned int  lfsr_lsb;
  unsigned int  line, column;
  unsigned int  color        = 0;
  unsigned int  use_gpu      = 1;
  unsigned int  wait_sel     = 0;
  unsigned int  x_coord      = 0;
  unsigned int  y_coord      = 0;
  unsigned int  loop;
 
  const uint16_t offset_x    = 35;
  const uint16_t offset_y    = 95;
  const uint16_t char_width  =  7;
 
  // Screen introduction
  gpu_fill (PIX_ADDR(0,                                    0                    ), 320,          480,          0x0000, DST_SWAP_NONE); // Background
 
  gpu_fill (PIX_ADDR(offset_x+1*6*char_width+3*char_width, offset_y+0*char_width), 1*char_width, 7*char_width, 0x000B, DST_SWAP_NONE); // 4
  gpu_fill (PIX_ADDR(offset_x+1*6*char_width+0*char_width, offset_y+4*char_width), 5*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+1*6*char_width+2*char_width, offset_y+1*char_width), 1*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+1*6*char_width+1*char_width, offset_y+2*char_width), 1*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+1*6*char_width+0*char_width, offset_y+3*char_width), 1*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
 
  gpu_fill (PIX_ADDR(offset_x+3*6*char_width+0*char_width, offset_y+0*char_width), 1*char_width, 6*char_width, 0x000B, DST_SWAP_NONE); // b
  gpu_fill (PIX_ADDR(offset_x+3*6*char_width+1*char_width, offset_y+6*char_width), 3*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+3*6*char_width+1*char_width, offset_y+4*char_width), 1*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+3*6*char_width+2*char_width, offset_y+3*char_width), 2*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+3*6*char_width+4*char_width, offset_y+4*char_width), 1*char_width, 2*char_width, 0x000B, DST_SWAP_NONE);
 
  gpu_fill (PIX_ADDR(offset_x+4*6*char_width+0*char_width, offset_y+2*char_width), 1*char_width, 5*char_width, 0x000B, DST_SWAP_NONE); // p
  gpu_fill (PIX_ADDR(offset_x+4*6*char_width+1*char_width, offset_y+2*char_width), 3*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+4*6*char_width+1*char_width, offset_y+4*char_width), 3*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+4*6*char_width+4*char_width, offset_y+3*char_width), 1*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
 
  gpu_fill (PIX_ADDR(offset_x+5*6*char_width+0*char_width, offset_y+2*char_width), 1*char_width, 5*char_width, 0x000B, DST_SWAP_NONE); // p
  gpu_fill (PIX_ADDR(offset_x+5*6*char_width+1*char_width, offset_y+2*char_width), 3*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+5*6*char_width+1*char_width, offset_y+4*char_width), 3*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
  gpu_fill (PIX_ADDR(offset_x+5*6*char_width+4*char_width, offset_y+3*char_width), 1*char_width, 1*char_width, 0x000B, DST_SWAP_NONE);
 
  ta_wait_no_lpm(WT_500MS);
  ta_wait_no_lpm(WT_500MS);
  ta_wait_no_lpm(WT_500MS);
  ta_wait_no_lpm(WT_500MS);
 
  // Clear background
  gpu_fill (PIX_ADDR(0,                                    0                    ), 320,          240,          0x0000, DST_SWAP_NONE);
 
  // Wait for on-going GPU operation to be done before moving on
  gpu_wait_done();
 
  // Fill the screen with all possible colors
  color = 0x0000;
  for( line = 0; line <4; line = line + 1 ) {
    for( column = 0; column < 4; column = column + 1 ) {
 
      draw_block(PIX_ADDR(x_coord, y_coord), 77, 57, color, DST_SWAP_NONE, 0);
      if (color==15) { color= 0;}
      else           { color++; }
      x_coord += 80;
    }
    y_coord += 60;
    x_coord  =  0;
  }
  ta_wait_no_lpm(WT_500MS);
  ta_wait_no_lpm(WT_500MS);
 
  // Initialize LFSR for random color generation
  lfsr = 0xACEB;
 
  // Loop the demo
  loop = 0;
  while (loop <4) {
 
    // Select rotation & GPU use
    switch(loop & 0x0003) {
    case 0 : DISPLAY_CFG = DST_SWAP_CL;	 wait_sel = 3;
	     break;
    case 1 : DISPLAY_CFG = DST_SWAP_CL;	 wait_sel = 2;
	     break;
    case 2 : DISPLAY_CFG = DST_SWAP_CL;	 wait_sel = 1;
	     break;
    default: DISPLAY_CFG = DST_SWAP_CL;	 wait_sel = 0;
	     break;
    }
    loop++;
    move_to_next_mode = 0;
 
    // Move the starting point of the buffer refresh
    DISPLAY_REFR_CNT =	0;
    while (!move_to_next_mode) {
 
      // Fill the screen with random colors
      x_coord	   = 0;
      y_coord	   = 0;
      for( line = 0; line <4; line = line + 1 ) {
	for( column = 0; column < 4; column = column + 1 ) {
 
	  // Compute next color from LFSR
	  lfsr_lsb = lfsr & 1;			   /* Get LSB (i.e., the output bit). */
	  lfsr     >>= 1;			   /* Shift register */
	  lfsr     ^= (-lfsr_lsb) & 0xB400u;	   /* If the output bit is 1, apply toggle mask.
						    * The value has 1 at bits corresponding
					            * to taps, 0 elsewhere. */
          color    = lfsr & 0x000F;
 
	  // Draw the box
	  draw_block(PIX_ADDR(x_coord, y_coord), 77, 57, color, DST_SWAP_NONE, use_gpu);
	  x_coord += 80;
	}
	y_coord += 60;
	x_coord  =  0;
      }
 
      // Wait according to config
      switch(wait_sel) {
      case 0 : while(DISPLAY_REFR_CNT!=0); DISPLAY_REFR_CNT = 2;
	       break;
      case 1 : while(DISPLAY_REFR_CNT!=0); DISPLAY_REFR_CNT = 4;
	       break;
      case 2 : while(DISPLAY_REFR_CNT!=0); DISPLAY_REFR_CNT = 7;
	       break;
      default: while(DISPLAY_REFR_CNT!=0); DISPLAY_REFR_CNT = 10;
	       break;
      }
    }
  }
};