main.c

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/*
 * @brief emWin with touch example
 *
 * @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 "GUI.h"
#include "board.h"

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

/* LCD width and height (from board LCD setup descriptor) */
#define LCD_WIDTH       BOARD_LCD.PPL
#define LCD_HEIGHT      BOARD_LCD.LPP

#if defined(__IAR_SYSTEMS_ICC__)
 #define LOCATE_ATX(x)      _Pragma(#x)
 #define LOCATE_ATXX(x)     LOCATE_ATX(location=x)
 #define LOCATE_AT(x)       LOCATE_ATXX(x)
#elif defined(__ARMCC_VERSION)
 #define LOCATE_AT(x)     __attribute__ ((at(x)))
#elif (defined(__CODE_RED))
 #define LOCATE_ATX(x)     __attribute__((section(".shmem_"#x ",\"aw\",%nobits@")))
 #define LOCATE_AT(x) LOCATE_ATX(x)
#elif (defined(__CODE_RED))
 #define LOCATE_AT(x) LOCATE_ATX(x)
#endif

static int16_t old_tmp_x = -1, old_tmp_y = -1;

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

#define GUI_BUF       LOCATE_AT(GUI_BUF_ADDR)
#define GUI_BUF_ADDR  0x28050000
#define GUI_NUMBYTES  ((1024 * 1024) * 2)
U32 GUI_Memory_Size = GUI_NUMBYTES;
U32 GUI_Block_Size = 0x128;
GUI_BUF U32 GUI_Memory[GUI_NUMBYTES / sizeof(U32)];

volatile uint32_t systick_timems;

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

/* mSec delay */
static void lcdDelay(uint32_t delay)
{
 delay += systick_timems;
 while (systick_timems < delay) {}
}

/* Initialize the LCD for the current board */
static void lcdInit(void)
{
 /* Board specific LCD pre-setup */
 Board_LCD_Init();

 /* Setup for current board */
 Chip_LCD_Init(LPC_LCD, (LCD_Config_T *) &BOARD_LCD);
 Board_InitTouchController();
 Chip_LCD_SetUPFrameBuffer(LPC_LCD, (void *) FRAMEBUFFER_ADDR);
 Chip_LCD_PowerOn(LPC_LCD);
 lcdDelay(100);

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

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

void SysTick_Handler(void)      // SysTick Interrupt Handler @ 1000Hz
{
 static uint8_t ttick = 0;   // Touch Screen time tick
 int16_t tmp_x = -1, tmp_y = -1;
 int16_t tmp_x1 = -1, tmp_y1 = -1;
 systick_timems++;      // Increment 1ms time tick

 if (ttick++ == 20) {   // Touch Screen update period is 20ms
  ttick = 0;
  Board_GetTouchPos((int16_t *) &tmp_x, (int16_t *) &tmp_y);
  if ((tmp_x >= 0) && (tmp_y > 0) && ((tmp_x != old_tmp_x) || (tmp_y != old_tmp_y))) {
   tmp_x1 = tmp_y;
   tmp_y1 = tmp_x;
   GUI_TOUCH_StoreState(320 - tmp_x1, tmp_y1);
   old_tmp_x = tmp_x;
   old_tmp_y = tmp_y;
  }
  else {
   GUI_TOUCH_StoreState(-1, -1);
  }
 }
}

extern void MainTask(void);

int main(void)
{
 Board_Init();

 /* sysTick will handle touch events at 1KHz */
 SysTick_Config(Chip_Clock_GetRate(CLK_MX_MXCORE) / 1000);

 /* Setup LCD */
 lcdInit();

 /* Main Task */
 MainTask();

 return 0;
}