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emc_18xx_43xx.c
Go to the documentation of this file.
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/*
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* @brief LPC18xx/43xx EMC driver
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*
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* @note
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* Copyright(C) NXP Semiconductors, 2012
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* All rights reserved.
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*
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* @par
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* LPC products. This software is supplied "AS IS" without any warranties of
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* any kind, and NXP Semiconductors and its licensor disclaim any and
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* all warranties, express or implied, including all implied warranties of
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* merchantability, fitness for a particular purpose and non-infringement of
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* intellectual property rights. NXP Semiconductors assumes no responsibility
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* or liability for the use of the software, conveys no license or rights under any
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* patent, copyright, mask work right, or any other intellectual property rights in
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* or to any products. NXP Semiconductors reserves the right to make changes
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* in the software without notification. NXP Semiconductors also makes no
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* representation or warranty that such application will be suitable for the
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* specified use without further testing or modification.
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*
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* @par
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors' and its
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* licensor's relevant copyrights in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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*/
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#include "
emc_18xx_43xx.h
"
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/*****************************************************************************
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* Private types/enumerations/variables
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****************************************************************************/
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/*****************************************************************************
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* Public types/enumerations/variables
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****************************************************************************/
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/*****************************************************************************
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* Private functions
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****************************************************************************/
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/*****************************************************************************
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* Public functions
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****************************************************************************/
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/* Dyanmic memory setup */
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void
Chip_EMC_Dynamic_Init
(
IP_EMC_DYN_CONFIG_Type
*Dynamic_Config)
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{
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uint32_t
ClkFreq;
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uint32_t
EMCDiv;
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/* Note clocks must be enabled prior to this call */
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ClkFreq =
Chip_Clock_GetRate
(
CLK_MX_EMC
);
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/* EMC Divider readback at pos 27
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TODO: just checked but dont mention in UM */
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EMCDiv = (
LPC_CCU1
->CLKCCU[
CLK_MX_EMC_DIV
].CFG >> 27) & 0x07;
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/* Check EMC Divider to get real EMC clock out */
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if
((EMCDiv == 1) && (
LPC_CREG
->CREG6 & (1 << 16))) {
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ClkFreq >>= 1;
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}
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IP_EMC_Dynamic_Init
(
LPC_EMC
, Dynamic_Config, ClkFreq);
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}
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/* Static memory setup */
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void
Chip_EMC_Static_Init
(
IP_EMC_STATIC_CONFIG_Type
*Static_Config)
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{
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uint32_t
ClkFreq;
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uint32_t
EMCDiv;
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/* Note clocks must be enabled prior to this call */
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ClkFreq =
Chip_Clock_GetRate
(
CLK_MX_EMC
);
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/* EMC Divider readback at pos 27 */
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EMCDiv = (
LPC_CCU1
->CLKCCU[
CLK_MX_EMC_DIV
].CFG >> 27) & 0x07;
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/* Check EMC Divider to get real EMC clock out */
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if
((EMCDiv == 1) && (
LPC_CREG
->CREG6 & (1 << 16))) {
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ClkFreq >>= 1;
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}
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IP_EMC_Static_Init
(
LPC_EMC
, Static_Config, ClkFreq);
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}
software
lpc_core
lpc_chip
chip_18xx_43xx
emc_18xx_43xx.c
Generated on Fri Nov 16 2012 13:36:41 for LPCOpen Platform by
1.8.2