123 lines
5.5 KiB
C
123 lines
5.5 KiB
C
/**
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* @file xmc_ebu.c
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* @date 2015-06-20
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*
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* @cond
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*********************************************************************************************************************
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* XMClib v2.1.12 - XMC Peripheral Driver Library
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*
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* Copyright (c) 2015-2017, Infineon Technologies AG
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,are permitted provided that the
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* following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided with the distribution.
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*
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* Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY,OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* To improve the quality of the software, users are encouraged to share modifications, enhancements or bug fixes with
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* Infineon Technologies AG dave@infineon.com).
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*********************************************************************************************************************
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*
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* Change History
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* --------------
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*
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* 2015-02-20:
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* - Initial <br>
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*
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* 2015-06-20:
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* - Removed GetDriverVersion API
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* @endcond
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*
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*/
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/*********************************************************************************************************************
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* HEADER FILES
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*********************************************************************************************************************/
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#include <xmc_ebu.h>
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#if defined(EBU)
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/*********************************************************************************************************************
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* API IMPLEMENTATION
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*********************************************************************************************************************/
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/*
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* Initialize the EBU peripheral
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*/
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XMC_EBU_STATUS_t XMC_EBU_Init(XMC_EBU_t *const ebu,const XMC_EBU_CONFIG_t *const config)
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{
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XMC_ASSERT("XMC_EBU_Init: Invalid module pointer", XMC_EBU_CHECK_MODULE_PTR(ebu));
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XMC_ASSERT("XMC_EBU_Init:Null Pointer", (config != (XMC_EBU_CONFIG_t *)NULL));
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/* Enable EBU */
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XMC_EBU_Enable(ebu);
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/* Clock configuration */
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ebu->CLC = config->ebu_clk_config.raw0;
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/*EBU Mode Configuration */
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ebu->MODCON = config->ebu_mode_config.raw0;
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/* Address Bits available for GPIO function */
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ebu->USERCON = config->ebu_free_pins_to_gpio.raw0;
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return XMC_EBU_STATUS_OK;
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}
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/*
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* Configures the SDRAM with operating modes and refresh parameters
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*/
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void XMC_EBU_ConfigureSdram(XMC_EBU_t *const ebu,const XMC_EBU_SDRAM_CONFIG_t *const config)
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{
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XMC_ASSERT("XMC_EBU_Init: Invalid module pointer", XMC_EBU_CHECK_MODULE_PTR(ebu));
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XMC_ASSERT("XMC_EBU_Init:Null Pointer", (config != (XMC_EBU_SDRAM_CONFIG_t *)NULL));
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/* EBU SDRAM Refresh Configuration Parameters */
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ebu->SDRMREF = config->raw2;
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/* EBU SDRAM General Configuration Parameters */
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ebu->SDRMCON = config->raw0;
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/* EBU SDRAM Operation Mode Configuration Parameters */
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ebu->SDRMOD = config->raw1;
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}
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/*
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* Configures the SDRAM region for read and write operation
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*/
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void XMC_EBU_ConfigureRegion(XMC_EBU_t *const ebu,const XMC_EBU_REGION_t *const region)
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{
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XMC_ASSERT("XMC_EBU_Init: Invalid module pointer", XMC_EBU_CHECK_MODULE_PTR(ebu));
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XMC_ASSERT("XMC_EBU_Init:Null Pointer", (region != (XMC_EBU_REGION_t *)NULL));
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/* Read configuration of the region*/
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ebu->BUS[region->read_config.ebu_region_no].RDCON = region->read_config.ebu_bus_read_config.raw0;
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/* Read parameters of the region*/
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ebu->BUS[region->read_config.ebu_region_no].RDAPR = region->read_config.ebu_bus_read_config.raw1;
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/* Write configuration of the region*/
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ebu->BUS[region->write_config.ebu_region_no].WRCON = region->write_config.ebu_bus_write_config.raw0;
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/* Write parameters of the region*/
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ebu->BUS[region->write_config.ebu_region_no].WRAPR = region->write_config.ebu_bus_write_config.raw1;
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}
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#endif /* defined(EBU) */
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