LPCOpen Platform for LPC18XX/43XX microcontrollers: C:/w/lpcopen_docs/software/lpc_core/lpc_board/board_common/lpc_nandflash_k9f1g.c Source File

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lpc_nandflash_k9f1g.c
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1 /*
2 * @brief K9F1G 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 "board.h"
33
40 /*****************************************************************************
41 * Private types/enumerations/variables
42 ****************************************************************************/
43
44 /* Get column address of a page in a block */
45 #define COLUMN_ADDR(block, page) (block * K9F1G_PAGES_PER_BLOCK + page)
46
47 /* NAND information */
48 static const lpc_nandflash_size_t nandSize = {
49 K9F1G_PAGE_SIZE, K9F1G_SPARE_SIZE, K9F1G_PAGES_PER_BLOCK, K9F1G_BLOCK_COUNT
50 };
51
52 /*****************************************************************************
53 * Public types/enumerations/variables
54 ****************************************************************************/
55
56 /*****************************************************************************
57 * Private functions
58 ****************************************************************************/
59
60 /*****************************************************************************
61 * Public functions
62 ****************************************************************************/
63 /* Initialize flash */
64 void lpc_nandflash_init(void)
65 {}
66
67 /* De-initialize flash */
68 void lpc_nandflash_DeInit(void)
69 {}
70
71 /* Get the flash size */
72 const lpc_nandflash_size_t *lpc_nandflash_get_size(void)
73 {
74 return &nandSize;
75 }
76
77 /* Get flash ID */
78 void lpc_nandflash_get_id(uint8_t *pData)
79 {
80 uint8_t i = 0;
81 #if defined(BOARD_NAND_LOCKEDCS)
82 Board_NANDFLash_CSLatch(true);
83 #endif
84 Board_NANDFLash_WriteCmd(K9F1G_READ_ID);
85 Board_NANDFLash_WriteAddr(0x00);
86
87 for (i = 0; i < sizeof(K9F1G_ID_T); i++) {
88 *pData = Board_NANDFLash_ReadByte();
89 pData++;
90 }
91
92 #if defined(BOARD_NAND_LOCKEDCS)
93 Board_NANDFLash_CSLatch(false);
94 #endif
95 }
96
97 /* Read status */
98 uint8_t lpc_nandflash_read_status(void)
99 {
100 uint8_t data;
101
102 #if defined(BOARD_NAND_LOCKEDCS)
103 Board_NANDFLash_CSLatch(true);
104 #endif
105 Board_NANDFLash_WriteCmd(K9F1G_READ_STATUS);
106 data = Board_NANDFLash_ReadByte();
107 #if defined(BOARD_NAND_LOCKEDCS)
108 Board_NANDFLash_CSLatch(false);
109 #endif
110
111 return data;
112 }
113
114 /* Erase block */
115 void lpc_nandflash_erase_block(uint32_t block)
116 {
117 uint32_t row = COLUMN_ADDR(block, 0);
118
119 #if defined(BOARD_NAND_LOCKEDCS)
120 Board_NANDFLash_CSLatch(true);
121 #endif
122 Board_NANDFLash_WriteCmd(K9F1G_BLOCK_ERASE_1);
123
124 /* Write address */
125 Board_NANDFLash_WriteAddr(row & 0xFF);
126 Board_NANDFLash_WriteAddr((row >> 8) & 0xFF);
127
128 Board_NANDFLash_WriteCmd(K9F1G_BLOCK_ERASE_2);
129 #if defined(BOARD_NAND_LOCKEDCS)
130 Board_NANDFLash_CSLatch(false);
131 #endif
132 }
133
134 /* Write buffer to flash */
135 uint32_t lpc_nandflash_write_page(uint32_t block, uint32_t page, uint8_t *data, uint32_t size)
136 {
137 uint32_t i = 0;
138 uint32_t row = COLUMN_ADDR(block, page);
139
140 #if defined(BOARD_NAND_LOCKEDCS)
141 Board_NANDFLash_CSLatch(true);
142 #endif
143 Board_NANDFLash_WriteCmd(K9F1G_PAGE_PROGRAM_1);
144
145 /* Write address*/
146 Board_NANDFLash_WriteAddr(0x00);
147 Board_NANDFLash_WriteAddr(0x00);
148 Board_NANDFLash_WriteAddr(row & 0xFF);
149 Board_NANDFLash_WriteAddr((row >> 8) & 0xFF);
150
151 /*Write data */
152 for (i = 0; i < size; i++) {
153 Board_NANDFLash_WriteByte(*data);
154 data++;
155 }
156
157 Board_NANDFLash_WriteCmd(K9F1G_PAGE_PROGRAM_2);
158 #if defined(BOARD_NAND_LOCKEDCS)
159 Board_NANDFLash_CSLatch(false);
160 #endif
161 return i;
162 }
163
164 /* Start reading data from flash */
165 void lpc_nandflash_read_start(uint32_t block, uint32_t page, uint32_t ofs)
166 {
167 uint32_t row = COLUMN_ADDR(block, page);
168
169 #if defined(BOARD_NAND_LOCKEDCS)
170 Board_NANDFLash_CSLatch(true);
171 #endif
172 Board_NANDFLash_WriteCmd(K9F1G_READ_1);
173
174 /* Write address */
175 Board_NANDFLash_WriteAddr(ofs & 0xFF);
176 Board_NANDFLash_WriteAddr((ofs >> 8) & 0xFF);
177 Board_NANDFLash_WriteAddr(row & 0xFF);
178 Board_NANDFLash_WriteAddr((row >> 8) & 0xFF);
179
180 Board_NANDFLash_WriteCmd(K9F1G_READ_2);
181 #if defined(BOARD_NAND_LOCKEDCS)
182 Board_NANDFLash_CSLatch(false);
183 #endif
184 }
185
186 /* Read data from flash */
187 void lpc_nandflash_read_data(uint8_t *data, uint32_t size)
188 {
189 uint32_t i = 0;
190
191 #if defined(BOARD_NAND_LOCKEDCS)
192 Board_NANDFLash_CSLatch(true);
193 #endif
194 for (i = 0; i < size; i++) {
195 *data = Board_NANDFLash_ReadByte();
196 data++;
197 }
198 #if defined(BOARD_NAND_LOCKEDCS)
199 Board_NANDFLash_CSLatch(false);
200 #endif
201 }
202