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lcd.c
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1 /*
2 * @brief Simple LCD colorbar example with image and cursor
3 *
4 * @note
5 * Copyright(C) NXP Semiconductors, 2012
6 * All rights reserved.
7 *
8 * @par
9 * Software that is described herein is for illustrative purposes only
10 * which provides customers with programming information regarding the
11 * LPC products. This software is supplied "AS IS" without any warranties of
12 * any kind, and NXP Semiconductors and its licensor disclaim any and
13 * all warranties, express or implied, including all implied warranties of
14 * merchantability, fitness for a particular purpose and non-infringement of
15 * intellectual property rights. NXP Semiconductors assumes no responsibility
16 * or liability for the use of the software, conveys no license or rights under any
17 * patent, copyright, mask work right, or any other intellectual property rights in
18 * or to any products. NXP Semiconductors reserves the right to make changes
19 * in the software without notification. NXP Semiconductors also makes no
20 * representation or warranty that such application will be suitable for the
21 * specified use without further testing or modification.
22 *
23 * @par
24 * Permission to use, copy, modify, and distribute this software and its
25 * documentation is hereby granted, under NXP Semiconductors' and its
26 * licensor's relevant copyrights in the software, without fee, provided that it
27 * is used in conjunction with NXP Semiconductors microcontrollers. This
28 * copyright, permission, and disclaimer notice must appear in all copies of
29 * this code.
30 */
31
32 #include "board.h"
33 #include "Cursor.h"
34
60 /*****************************************************************************
61 * Private types/enumerations/variables
62 ****************************************************************************/
63
64 #define LCD_WIDTH BOARD_LCD.PPL
65 #define LCD_HEIGHT BOARD_LCD.LPP
66 #define LOGO_WIDTH 110
67 #define LOGO_HEIGHT 42
68
69 /* pointer to frame buffer */
70 static uint16_t *framebuffer = (uint16_t *) FRAMEBUFFER_ADDR;
71 static volatile uint32_t msec;
72
73 /*****************************************************************************
74 * Public types/enumerations/variables
75 ****************************************************************************/
76
77 /* Image */
78 extern const unsigned short image[];
79
80 /*****************************************************************************
81 * Private functions
82 ****************************************************************************/
83
84 /* Put a pixel at the x, y coordinate */
85 static void putpixel(uint32_t x, uint32_t y, uint16_t val) {
86 framebuffer[x + y * LCD_WIDTH] = val;
87 }
88
89 /*****************************************************************************
90 * Public functions
91 ****************************************************************************/
92
97 void SysTick_Handler(void)
98 {
99 if (msec) {
100 msec--;
101 }
102 }
103
108 int main(void)
109 {
110 uint32_t i, j;
111 int cursor_x = 100, cursor_y = 150;
112 int16_t tmp_x = -1, tmp_y = -1;
113
114 Board_Init();
115 Board_LCD_Init();
116
117 SysTick_Config(SystemCoreClock / 1000);
118 msec = 5;
119 while (msec) {}
120
121 /* Fill Colorbar only*/
122 for (i = 0; i < LCD_WIDTH * LCD_HEIGHT / 4; i++)
123 framebuffer[i] = 0x1F;
124 for (i = LCD_WIDTH * LCD_HEIGHT / 4; i < LCD_WIDTH * LCD_HEIGHT * 2 / 4; i++)
125 framebuffer[i] = 0x3F << 5;
126 for (i = LCD_WIDTH * LCD_HEIGHT * 2 / 4; i < LCD_WIDTH * LCD_HEIGHT * 3 / 4; i++)
127 framebuffer[i] = 0x1F << 11;
128 for (i = LCD_WIDTH * LCD_HEIGHT * 3 / 4; i < LCD_WIDTH * LCD_HEIGHT; i++)
129 framebuffer[i] = 0xFFFF;
130 /* Fill NXP logo */
131 for (j = 0; j < LOGO_HEIGHT; j++)
132 for (i = 0; i < LOGO_WIDTH; i++)
133 putpixel(i, j, image[(i + j * LOGO_WIDTH)]);
134
135 Chip_LCD_Init(LPC_LCD, (LCD_Config_T *) &BOARD_LCD);
136
137 Board_InitTouchController();
138 Chip_LCD_SetUPFrameBuffer(LPC_LCD, (void *) framebuffer);
139 Chip_LCD_PowerOn(LPC_LCD);
140 msec = 100;
141 while (msec) {}
142
143 Chip_LCD_Cursor_Disable(LPC_LCD, 0);
144 Chip_LCD_Cursor_Config(LPC_LCD, LCD_CURSOR_32x32, true);
145 Chip_LCD_Cursor_WriteImage(LPC_LCD, 0, (void *) Cursor);
146 Chip_LCD_Cursor_SetClip(LPC_LCD, CURSOR_H_OFS, CURSOR_V_OFS);
147 Chip_LCD_Cursor_SetPos(LPC_LCD, cursor_x, cursor_y);
148 Chip_LCD_Cursor_Enable(LPC_LCD, 0);
149
150 /* Turn on backlight */
151 Board_SetLCDBacklight(1);
152
153 msec = 20;
154 while (msec) {}
155
156 while (1) {
157 Board_GetTouchPos((int16_t *) &tmp_x, (int16_t *) &tmp_y);
158 if ((tmp_x >= 0) && (tmp_y >= 0)) {
159 cursor_x = tmp_x;
160 cursor_y = tmp_y;
161 }
162
163 if (LCD_WIDTH < cursor_x) {
164 cursor_x = LCD_WIDTH - CURSOR_H_OFS;
165 }
166
167 if (LCD_HEIGHT < cursor_y) {
168 cursor_y = (LCD_HEIGHT - CURSOR_V_OFS);
169 }
170 Chip_LCD_Cursor_SetPos(LPC_LCD, cursor_x, cursor_y);
171 }
172 }
173