LPCOpen Platform for LPC18XX/43XX microcontrollers: C:/w/lpcopen_docs/software/lpc_core/lpc_chip/chip_18xx_43xx/lcd_18xx_43xx.c Source File

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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 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 uint32_t i, regValue, *pPal;
56 uint32_t pcd;
57
58 /* Enable LCD Clock */
59 Chip_Clock_EnableOpts(CLK_MX_LCD, true, true, 1);
60
61 /* disable the display */
62 pLCD->CTRL &= ~CLCDC_LCDCTRL_ENABLE;
63
64 /* Setting LCD_TIMH register */
65 regValue = ( ((((LCD_ConfigStruct->PPL / 16) - 1) & 0x3F) << 2)
66 | (( (LCD_ConfigStruct->HSW - 1) & 0xFF) << 8)
67 | (( (LCD_ConfigStruct->HFP - 1) & 0xFF) << 16)
68 | (( (LCD_ConfigStruct->HBP - 1) & 0xFF) << 24) );
69 pLCD->TIMH = regValue;
70
71 /* Setting LCD_TIMV register */
72 regValue = ((((LCD_ConfigStruct->LPP - 1) & 0x3FF) << 0)
73 | (((LCD_ConfigStruct->VSW - 1) & 0x03F) << 10)
74 | (((LCD_ConfigStruct->VFP - 1) & 0x0FF) << 16)
75 | (((LCD_ConfigStruct->VBP - 1) & 0x0FF) << 24) );
76 pLCD->TIMV = regValue;
77
78 /* Generate the clock and signal polarity control word */
79 regValue = 0;
80 regValue = (((LCD_ConfigStruct->ACB - 1) & 0x1F) << 6);
81 regValue |= (LCD_ConfigStruct->IOE & 1) << 14;
82 regValue |= (LCD_ConfigStruct->IPC & 1) << 13;
83 regValue |= (LCD_ConfigStruct->IHS & 1) << 12;
84 regValue |= (LCD_ConfigStruct->IVS & 1) << 11;
85
86 /* Compute clocks per line based on panel type */
87 switch (LCD_ConfigStruct->LCD) {
88 case LCD_MONO_4:
89 regValue |= ((((LCD_ConfigStruct->PPL / 4) - 1) & 0x3FF) << 16);
90 break;
91
92 case LCD_MONO_8:
93 regValue |= ((((LCD_ConfigStruct->PPL / 8) - 1) & 0x3FF) << 16);
94 break;
95
96 case LCD_CSTN:
97 regValue |= (((((LCD_ConfigStruct->PPL * 3) / 8) - 1) & 0x3FF) << 16);
98 break;
99
100 case LCD_TFT:
101 default:
102 regValue |= /*1<<26 |*/ (((LCD_ConfigStruct->PPL - 1) & 0x3FF) << 16);
103 }
104
105 /* panel clock divisor */
106 pcd = 5;// LCD_ConfigStruct->pcd; // TODO: should be calculated from LCDDCLK
107 pcd &= 0x3FF;
108 regValue |= ((pcd >> 5) << 27) | ((pcd) & 0x1F);
109 pLCD->POL = regValue;
110
111 /* disable interrupts */
112 pLCD->INTMSK = 0;
113
114 /* set bits per pixel */
115 regValue = LCD_ConfigStruct->BPP << 1;
116
117 /* set color format RGB */
118 regValue |= LCD_ConfigStruct->color_format << 8;
119 regValue |= LCD_ConfigStruct->LCD << 4;
120 if (LCD_ConfigStruct->Dual == 1) {
121 regValue |= 1 << 7;
122 }
123 pLCD->CTRL = regValue;
124
125 /* clear palette */
126 pPal = (uint32_t *) (&(pLCD->PAL));
127 for (i = 0; i < 128; i++) {
128 *pPal = 0;
129 pPal++;
130 }
131 }
132
133 /* Shutdown the LCD controller */
134 void Chip_LCD_DeInit(LPC_LCD_T *pLCD)
135 {
136 Chip_Clock_Disable(CLK_MX_LCD);
137 }
138
139 /* Configure Cursor */
140 void Chip_LCD_Cursor_Config(LPC_LCD_T *pLCD, LCD_CURSOR_SIZE_OPT_T cursor_size, bool sync)
141 {
142 LCD_Cursor_Size = cursor_size;
143 pLCD->CRSR_CFG = ((sync ? 1 : 0) << 1) | cursor_size;
144 }
145
146 /* Write Cursor Image into Internal Cursor Image Buffer */
147 void Chip_LCD_Cursor_WriteImage(LPC_LCD_T *pLCD, uint8_t cursor_num, void *Image)
148 {
149 int i, j;
150 uint32_t *fifoptr, *crsr_ptr = (uint32_t *) Image;
151
152 /* Check if Cursor Size was configured as 32x32 or 64x64*/
153 if (LCD_Cursor_Size == LCD_CURSOR_32x32) {
154 i = cursor_num * 64;
155 j = i + 64;
156 }
157 else {
158 i = 0;
159 j = 256;
160 }
161 fifoptr = (void *) &(pLCD->CRSR_IMG[0]);
162
163 /* Copy Cursor Image content to FIFO */
164 for (; i < j; i++) {
165
166 *fifoptr = *crsr_ptr;
167 crsr_ptr++;
168 fifoptr++;
169 }
170 }
171
172 /* Load LCD Palette */
173 void Chip_LCD_LoadPalette(LPC_LCD_T *pLCD, void *palette)
174 {
175 LCD_PALETTE_ENTRY_T pal_entry = {0};
176 uint8_t i, *pal_ptr;
177 /* This function supports loading of the color palette from
178 the C file generated by the bmp2c utility. It expects the
179 palette to be passed as an array of 32-bit BGR entries having
180 the following format:
181 2:0 - Not used
182 7:3 - Blue
183 10:8 - Not used
184 15:11 - Green
185 18:16 - Not used
186 23:19 - Red
187 31:24 - Not used
188 arg = pointer to input palette table address */
189 pal_ptr = (uint8_t *) palette;
190
191 /* 256 entry in the palette table */
192 for (i = 0; i < 256 / 2; i++) {
193 pal_entry.Bl = (*pal_ptr++) >> 3; /* blue first */
194 pal_entry.Gl = (*pal_ptr++) >> 3; /* get green */
195 pal_entry.Rl = (*pal_ptr++) >> 3; /* get red */
196 pal_ptr++; /* skip over the unused byte */
197 /* do the most significant halfword of the palette */
198 pal_entry.Bu = (*pal_ptr++) >> 3; /* blue first */
199 pal_entry.Gu = (*pal_ptr++) >> 3; /* get green */
200 pal_entry.Ru = (*pal_ptr++) >> 3; /* get red */
201 pal_ptr++; /* skip over the unused byte */
202
203 pLCD->PAL[i] = *((uint32_t *)&pal_entry);
204 }
205 }
206