LPCOpen Platform  v1.03
LPCOpen Platform for NXP LPC Microcontrollers
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
lcd_17xx_40xx.c
Go to the documentation of this file.
1 /*
2  * @brief LPC17xx/40xx 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 #if !defined(CHIP_LPC175X_6X)
35 
36 /*****************************************************************************
37  * Private types/enumerations/variables
38  ****************************************************************************/
39 
40 static IP_LCD_CURSOR_SIZE_OPT_T LCD_Cursor_Size = LCD_CURSOR_64x64;
41 
42 /*****************************************************************************
43  * Public types/enumerations/variables
44  ****************************************************************************/
45 
46 /*****************************************************************************
47  * Private functions
48  ****************************************************************************/
49 
50 /*****************************************************************************
51  * Public functions
52  ****************************************************************************/
53 
54 /* Initialize the LCD controller */
55 void Chip_LCD_Init(LPC_LCD_T *pLCD, LCD_Config_T *LCD_ConfigStruct)
56 {
57  Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_LCD);
58  IP_LCD_Init(pLCD, LCD_ConfigStruct);
59 }
60 
61 /* Shutdown the LCD controller */
62 void Chip_LCD_DeInit(LPC_LCD_T *pLCD)
63 {
64  Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_LCD);
65 }
66 
67 /* Configure Cursor */
68 void Chip_LCD_Cursor_Config(LPC_LCD_T *pLCD, IP_LCD_CURSOR_SIZE_OPT_T cursor_size, bool sync)
69 {
70  LCD_Cursor_Size = cursor_size;
71  IP_LCD_Cursor_Config(pLCD, cursor_size, sync);
72 }
73 
74 /* Write Cursor Image into Internal Cursor Image Buffer */
75 void Chip_LCD_Cursor_WriteImage(LPC_LCD_T *pLCD, uint8_t cursor_num, void *Image)
76 {
77  int i, j;
78  uint32_t *fifoptr, *crsr_ptr = (uint32_t *) Image;
79 
80  /* Check if Cursor Size was configured as 32x32 or 64x64*/
81  if (LCD_Cursor_Size == LCD_CURSOR_32x32) {
82  i = cursor_num * 64;
83  j = i + 64;
84  }
85  else {
86  i = 0;
87  j = 256;
88  }
89  fifoptr = IP_LCD_Cursor_GetImageBufferAddress(pLCD, 0);
90 
91  /* Copy Cursor Image content to FIFO */
92  for (; i < j; i++) {
93 
94  *fifoptr = *crsr_ptr;
95  crsr_ptr++;
96  fifoptr++;
97  }
98 }
99 
100 /* Load LCD Palette */
101 void Chip_LCD_LoadPalette(LPC_LCD_T *pLCD, void *palette) {
102  LCD_PALETTE_ENTRY_T pal_entry, *ptr_pal_entry;
103  uint8_t i, *pal_ptr;
104 
105  ptr_pal_entry = &pal_entry;
106  pal_ptr = (uint8_t *) palette;
107 
108  /* 256 entry in the palette table */
109  for (i = 0; i < 256 / 2; i++) {
110  pal_entry.Bl = (*pal_ptr++) >> 3; /* blue first */
111  pal_entry.Gl = (*pal_ptr++) >> 3; /* get green */
112  pal_entry.Rl = (*pal_ptr++) >> 3; /* get red */
113  pal_ptr++; /* skip over the unused byte */
114  /* do the most significant halfword of the palette */
115  pal_entry.Bu = (*pal_ptr++) >> 3; /* blue first */
116  pal_entry.Gu = (*pal_ptr++) >> 3; /* get green */
117  pal_entry.Ru = (*pal_ptr++) >> 3; /* get red */
118  pal_ptr++; /* skip over the unused byte */
119 
120  IP_LCD_Color_LoadPalette(pLCD, (uint32_t *) &ptr_pal_entry, i);
121  }
122 }
123 
124 #endif /* !defined(CHIP_LPC175X_6X) */