LPCOpen Platform
LPCOpen Platform for NXP LPC Microcontrollers
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
lcd_001.c
Go to the documentation of this file.
1 /*
2  * @brief LCD controller Registers and control functions
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 "lcd_001.h"
33 
34 /*****************************************************************************
35  * Private types/enumerations/variables
36  ****************************************************************************/
37 
38 /*****************************************************************************
39  * Public types/enumerations/variables
40  ****************************************************************************/
41 
42 /*****************************************************************************
43  * Private functions
44  ****************************************************************************/
45 
46 /*****************************************************************************
47  * Public functions
48  ****************************************************************************/
49 
50 /* Initialize the LCD controller */
51 void IP_LCD_Init(IP_LCD_001_Type *LCDx, LCD_Config_Type *LCD_ConfigStruct)
52 {
53  uint32_t i, regValue, *pPal;
54  uint32_t pcd;
55 
56  /* disable the display */
57  LCDx->CTRL &= ~CLCDC_LCDCTRL_ENABLE;
58 
59  /* Setting LCD_TIMH register */
60  regValue = ( ((((LCD_ConfigStruct->PPL / 16) - 1) & 0x3F) << 2)
61  | (( (LCD_ConfigStruct->HSW - 1) & 0xFF) << 8)
62  | (( (LCD_ConfigStruct->HFP - 1) & 0xFF) << 16)
63  | (( (LCD_ConfigStruct->HBP - 1) & 0xFF) << 24) );
64  LCDx->TIMH = regValue;
65 
66  /* Setting LCD_TIMV register */
67  regValue = ((((LCD_ConfigStruct->LPP - 1) & 0x3FF) << 0)
68  | (((LCD_ConfigStruct->VSW - 1) & 0x03F) << 10)
69  | (((LCD_ConfigStruct->VFP - 1) & 0x0FF) << 16)
70  | (((LCD_ConfigStruct->VBP - 1) & 0x0FF) << 24) );
71  LCDx->TIMV = regValue;
72 
73  /* Generate the clock and signal polarity control word */
74  regValue = 0;
75  regValue = (((LCD_ConfigStruct->ACB - 1) & 0x1F) << 6);
76  regValue |= (LCD_ConfigStruct->IOE & 1) << 14;
77  regValue |= (LCD_ConfigStruct->IPC & 1) << 13;
78  regValue |= (LCD_ConfigStruct->IHS & 1) << 12;
79  regValue |= (LCD_ConfigStruct->IVS & 1) << 11;
80 
81  /* Compute clocks per line based on panel type */
82  switch (LCD_ConfigStruct->LCD) {
83  case LCD_MONO_4:
84  regValue |= ((((LCD_ConfigStruct->PPL / 4) - 1) & 0x3FF) << 16);
85  break;
86 
87  case LCD_MONO_8:
88  regValue |= ((((LCD_ConfigStruct->PPL / 8) - 1) & 0x3FF) << 16);
89  break;
90 
91  case LCD_CSTN:
92  regValue |= (((((LCD_ConfigStruct->PPL * 3) / 8) - 1) & 0x3FF) << 16);
93  break;
94 
95  case LCD_TFT:
96  default:
97  regValue |= /*1<<26 |*/ (((LCD_ConfigStruct->PPL - 1) & 0x3FF) << 16);
98  }
99 
100  /* panel clock divisor */
101  pcd = 5;// LCD_ConfigStruct->pcd; // TODO: should be calculated from LCDDCLK
102  pcd &= 0x3FF;
103  regValue |= ((pcd >> 5) << 27) | ((pcd) & 0x1F);
104  LCDx->POL = regValue;
105 
106  /* disable interrupts */
107  LCDx->INTMSK = 0;
108 
109  /* set bits per pixel */
110  regValue = LCD_ConfigStruct->BPP << 1;
111 
112  /* set color format RGB */
113  regValue |= LCD_ConfigStruct->color_format << 8;
114  regValue |= LCD_ConfigStruct->LCD << 4;
115  if (LCD_ConfigStruct->Dual == 1) {
116  regValue |= 1 << 7;
117  }
118  LCDx->CTRL = regValue;
119 
120  /* clear palette */
121  pPal = (uint32_t *) (&(LCDx->PAL));
122  for (i = 0; i < 128; i++) {
123  *pPal = 0;
124  pPal++;
125  }
126 }
127 
128 /* Power the LCD Panel (power pin) */
130  volatile int i;
131  if (OnOff) {
132  LCDx->CTRL |= CLCDC_LCDCTRL_PWR;
133  for (i = 0; i < 1000000; i++) {}
134  LCDx->CTRL |= CLCDC_LCDCTRL_ENABLE;
135  }
136  else {
137  LCDx->CTRL &= ~CLCDC_LCDCTRL_PWR;
138  for (i = 0; i < 1000000; i++) {}
139  LCDx->CTRL &= ~CLCDC_LCDCTRL_ENABLE;
140  }
141 }
142 
143 /* Enable/Disable the LCD Controller */
145  if (EnDis) {
146  LCDx->CTRL |= CLCDC_LCDCTRL_ENABLE;
147  }
148  else {
149  LCDx->CTRL &= ~CLCDC_LCDCTRL_ENABLE;
150  }
151 }
152 
153 /* Set LCD Upper Panel Frame Buffer for Single Panel or Upper Panel Frame Buffer for Dual Panel */
154 void IP_LCD_SetUPFrameBuffer(IP_LCD_001_Type *LCDx, void *buffer) {
155  LCDx->UPBASE = (uint32_t) buffer;
156 }
157 
158 /* Set LCD Lower Panel Frame Buffer for Dual Panel */
159 void IP_LCD_SetLPFrameBuffer(IP_LCD_001_Type *LCDx, void *buffer) {
160  LCDx->LPBASE = (uint32_t) buffer;
161 }
162 
163 /* Configure Cursor */
164 void IP_LCD_Cursor_Config(IP_LCD_001_Type *LCDx, LCD_CURSOR_SIZE_OPT cursor_size, bool sync) {
165  LCDx->CRSR_CFG = ((sync ? 1 : 0) << 1) | cursor_size;
166 }
167 
168 /* Get Internal Cursor Image Buffer Address */
169 void *IP_LCD_Cursor_GetImageBufferAddress(IP_LCD_001_Type *LCDx, uint8_t cursor_num) {
170  return (void *) &(LCDx->CRSR_IMG[cursor_num * 64]);
171 }
172 
173 /* Enable Cursor */
174 void IP_LCD_Cursor_Enable(IP_LCD_001_Type *LCDx, uint8_t cursor_num, FunctionalState OnOff) {
175  if (OnOff) {
176  LCDx->CRSR_CTRL = (cursor_num << 4) | 1;
177  }
178  else {
179  LCDx->CRSR_CTRL = (cursor_num << 4);
180  }
181 }
182 
183 /* Load Cursor Palette 0 */
185  /* 7:0 - Red
186  15:8 - Green
187  23:16 - Blue
188  31:24 - Not used*/
189  LCDx->CRSR_PAL0 = (uint32_t) palette_color;
190 }
191 
192 /* Load Cursor Palette 1 */
194  /* 7:0 - Red
195  15:8 - Green
196  23:16 - Blue
197  31:24 - Not used*/
198  LCDx->CRSR_PAL1 = (uint32_t) palette_color;
199 }
200 
201 /* Set Cursor Position */
202 void IP_LCD_Cursor_SetPos(IP_LCD_001_Type *LCDx, uint16_t x, uint16_t y) {
203  LCDx->CRSR_XY = (x & 0x3FF) | ((y & 0x3FF) << 16);
204 }
205 
206 /* Set Cursor Clipping Position */
207 void IP_LCD_Cursor_SetClip(IP_LCD_001_Type *LCDx, uint16_t x, uint16_t y) {
208  LCDx->CRSR_CLIP = (x & 0x3F) | ((y & 0x3F) << 8);
209 }
210 
211 /* Load Color Palette */
212 void IP_LCD_Color_LoadPalette(IP_LCD_001_Type *LCDx, uint32_t *palette_addr, uint32_t index) {
213  LCDx->PAL[index] = *(uint32_t *) palette_addr;
214 }