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lcd_18xx_43xx.c
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1 /*
2 * @brief LPC18xx/43xx LCD chip driver
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 "chip.h"
33
34 /*****************************************************************************
35 * Private types/enumerations/variables
36 ****************************************************************************/
37
38 static IP_LCD_CURSOR_SIZE_OPT_T LCD_Cursor_Size = LCD_CURSOR_64x64;
39
40 /*****************************************************************************
41 * Public types/enumerations/variables
42 ****************************************************************************/
43
44 /*****************************************************************************
45 * Private functions
46 ****************************************************************************/
47
48 /*****************************************************************************
49 * Public functions
50 ****************************************************************************/
51
52 /* Initialize the LCD controller */
53 void Chip_LCD_Init(LPC_LCD_T *pLCD, LCD_Config_T *LCD_ConfigStruct)
54 {
55 Chip_Clock_EnableOpts(CLK_MX_LCD, true, true, 1);
56 IP_LCD_Init(pLCD, LCD_ConfigStruct);
57 }
58
59 /* Shutdown the LCD controller */
60 void Chip_LCD_DeInit(LPC_LCD_T *pLCD)
61 {
62 Chip_Clock_Disable(CLK_MX_LCD);
63 }
64
65 /* Configure Cursor */
66 void Chip_LCD_Cursor_Config(LPC_LCD_T *pLCD, IP_LCD_CURSOR_SIZE_OPT_T cursor_size, bool sync)
67 {
68 LCD_Cursor_Size = cursor_size;
69 IP_LCD_Cursor_Config(pLCD, cursor_size, sync);
70 }
71
72 /* Write Cursor Image into Internal Cursor Image Buffer */
73 void Chip_LCD_Cursor_WriteImage(LPC_LCD_T *pLCD, uint8_t cursor_num, void *Image)
74 {
75 int i, j;
76 uint32_t *fifoptr, *crsr_ptr = (uint32_t *) Image;
77
78 /* Check if Cursor Size was configured as 32x32 or 64x64*/
79 if (LCD_Cursor_Size == LCD_CURSOR_32x32) {
80 i = cursor_num * 64;
81 j = i + 64;
82 }
83 else {
84 i = 0;
85 j = 256;
86 }
87 fifoptr = IP_LCD_Cursor_GetImageBufferAddress(pLCD, 0);
88
89 /* Copy Cursor Image content to FIFO */
90 for (; i < j; i++) {
91
92 *fifoptr = *crsr_ptr;
93 crsr_ptr++;
94 fifoptr++;
95 }
96 }
97
98 /* Load LCD Palette */
99 void Chip_LCD_LoadPalette(LPC_LCD_T *pLCD, void *palette)
100 {
101 LCD_PALETTE_ENTRY_T pal_entry, *ptr_pal_entry;
102 uint8_t i, *pal_ptr;
103 /* This function supports loading of the color palette from
104 the C file generated by the bmp2c utility. It expects the
105 palette to be passed as an array of 32-bit BGR entries having
106 the following format:
107 2:0 - Not used
108 7:3 - Blue
109 10:8 - Not used
110 15:11 - Green
111 18:16 - Not used
112 23:19 - Red
113 31:24 - Not used
114 arg = pointer to input palette table address */
115 ptr_pal_entry = &pal_entry;
116 pal_ptr = (uint8_t *) palette;
117
118 /* 256 entry in the palette table */
119 for (i = 0; i < 256 / 2; i++) {
120 pal_entry.Bl = (*pal_ptr++) >> 3; /* blue first */
121 pal_entry.Gl = (*pal_ptr++) >> 3; /* get green */
122 pal_entry.Rl = (*pal_ptr++) >> 3; /* get red */
123 pal_ptr++; /* skip over the unused byte */
124 /* do the most significant halfword of the palette */
125 pal_entry.Bu = (*pal_ptr++) >> 3; /* blue first */
126 pal_entry.Gu = (*pal_ptr++) >> 3; /* get green */
127 pal_entry.Ru = (*pal_ptr++) >> 3; /* get red */
128 pal_ptr++; /* skip over the unused byte */
129
130 IP_LCD_Color_LoadPalette(pLCD, (uint32_t *) &ptr_pal_entry, i);
131 }
132 }