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eeprom_17xx_40xx.c
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1 /*
2 * @brief LPC17xx/40xx EEPROM 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 /*****************************************************************************
41 * Public types/enumerations/variables
42 ****************************************************************************/
43
44 /*****************************************************************************
45 * Private functions
46 ****************************************************************************/
47
48 /*****************************************************************************
49 * Public functions
50 ****************************************************************************/
51
52 /* Initializes the EEPROM peripheral with specified parameter */
53 void Chip_EEPROM_Init(LPC_EEPROM_T *pEEPROM)
54 {
55 uint32_t val, cclk;
56
57 /* Setup EEPROM timing to 375KHz based on PCLK rate */
58 cclk = Chip_Clock_GetSystemClockRate();
59 IP_EEPROM_Init(pEEPROM, cclk / 375000 - 1);
60
61 /* Setup EEPROM wait states to 15, 35, 35nS */
62 val = ((((cclk / 1000000) * 15) / 1000) + 1);
63 val |= (((((cclk / 1000000) * 55) / 1000) + 1) << 8);
64 val |= (((((cclk / 1000000) * 35) / 1000) + 1) << 16);
65 IP_EEPROM_SetWaitState(pEEPROM, val);
66 }
67
68 #endif /* !defined(CHIP_LPC175X_6X) */