lcd.c

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/*
 * @brief Simple LCD colorbar example with image and cursor
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#include "board.h"
#include "Cursor.h"

/*****************************************************************************
 * Private types/enumerations/variables
 ****************************************************************************/

#define LCD_WIDTH       BOARD_LCD.PPL
#define LCD_HEIGHT      BOARD_LCD.LPP
#define LOGO_WIDTH      110
#define LOGO_HEIGHT     42

/* pointer to frame buffer */
static uint16_t *framebuffer = (uint16_t *) FRAMEBUFFER_ADDR;
static volatile uint32_t msec;

/*****************************************************************************
 * Public types/enumerations/variables
 ****************************************************************************/

/* Image */
extern const unsigned short image[];

/*****************************************************************************
 * Private functions
 ****************************************************************************/

/* Put a pixel at the x, y coordinate */
static void putpixel(uint32_t x, uint32_t y, uint16_t val) {
 framebuffer[x + y * LCD_WIDTH] = val;
}

/*****************************************************************************
 * Public functions
 ****************************************************************************/

void SysTick_Handler(void)
{
 if (msec) {
  msec--;
 }
}

int main(void)
{
 uint32_t i, j;
 int cursor_x = 100, cursor_y = 150;
 int16_t tmp_x = -1, tmp_y = -1;

 Board_Init();
 Board_LCD_Init();

 SysTick_Config(SystemCoreClock / 1000);
 msec = 5;
 while (msec) {}

 /* Fill Colorbar only*/
 for (i = 0; i < LCD_WIDTH * LCD_HEIGHT / 4; i++)
  framebuffer[i] = 0x1F;
 for (i = LCD_WIDTH * LCD_HEIGHT / 4; i < LCD_WIDTH * LCD_HEIGHT * 2 / 4; i++)
  framebuffer[i] = 0x3F << 5;
 for (i = LCD_WIDTH * LCD_HEIGHT * 2 / 4; i < LCD_WIDTH * LCD_HEIGHT * 3 / 4; i++)
  framebuffer[i] = 0x1F << 11;
 for (i = LCD_WIDTH * LCD_HEIGHT * 3 / 4; i < LCD_WIDTH * LCD_HEIGHT; i++)
  framebuffer[i] = 0xFFFF;
 /* Fill NXP logo */
 for (j = 0; j < LOGO_HEIGHT; j++)
  for (i = 0; i < LOGO_WIDTH; i++)
   putpixel(i, j, image[(i + j * LOGO_WIDTH)]);

 Chip_LCD_Init(LPC_LCD, (LCD_Config_T *) &BOARD_LCD);

 Board_InitTouchController();
 Chip_LCD_SetUPFrameBuffer(LPC_LCD,  (void *) framebuffer);
 Chip_LCD_PowerOn(LPC_LCD);
 msec = 100;
 while (msec) {}

 Chip_LCD_Cursor_Disable(LPC_LCD, 0);
 Chip_LCD_Cursor_Config(LPC_LCD, LCD_CURSOR_32x32, true);
 Chip_LCD_Cursor_WriteImage(LPC_LCD, 0, (void *) Cursor);
 Chip_LCD_Cursor_SetClip(LPC_LCD, CURSOR_H_OFS, CURSOR_V_OFS);
 Chip_LCD_Cursor_SetPos(LPC_LCD, cursor_x, cursor_y);
 Chip_LCD_Cursor_Enable(LPC_LCD, 0);

 /* Turn on backlight */
 Board_SetLCDBacklight(1);

 msec = 20;
 while (msec) {}

 while (1) {
  Board_GetTouchPos((int16_t *) &tmp_x, (int16_t *) &tmp_y);
  if ((tmp_x >= 0) && (tmp_y >= 0)) {
   cursor_x = tmp_x;
   cursor_y = tmp_y;
  }

  if (LCD_WIDTH < cursor_x) {
   cursor_x = LCD_WIDTH - CURSOR_H_OFS;
  }

  if (LCD_HEIGHT < cursor_y) {
   cursor_y = (LCD_HEIGHT - CURSOR_V_OFS);
  }
  Chip_LCD_Cursor_SetPos(LPC_LCD, cursor_x, cursor_y);
 }
}