66 lines
3.2 KiB
C
66 lines
3.2 KiB
C
/*!
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\file gd32f20x_sdram_eval.h
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\brief the header file of sdram(MICRON 48LC16M16A2) driver
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\version 2015-07-15, V1.0.0, firmware for GD32F20x
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\version 2017-06-05, V2.0.0, firmware for GD32F20x
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\version 2018-10-31, V2.1.0, firmware for GD32F20x
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*/
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/*
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Copyright (c) 2018, GigaDevice Semiconductor Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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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)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#ifndef GD32F20X_SDRAM_EVAL_H
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#define GD32F20X_SDRAM_EVAL_H
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#include "gd32f20x.h"
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/* sdram peripheral initialize */
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void exmc_synchronous_dynamic_ram_init(uint32_t sdram_device);
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/* fill the buffer with specified value */
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void fill_buffer(uint8_t *pbuffer, uint16_t buffer_lengh, uint16_t offset);
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/* write a byte buffer(data is 8 bits) to the EXMC SDRAM memory */
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void sdram_writebuffer_8(uint32_t sdram_device, uint8_t* pbuffer, uint32_t writeaddr, uint32_t numbyte_write);
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/* read a block of 8-bit data from the EXMC SDRAM memory */
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void sdram_readbuffer_8(uint32_t sdram_device, uint8_t* pbuffer, uint32_t readaddr, uint32_t numbyte_read);
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/* write a half-byte buffer(data is 16 bits) to the EXMC SDRAM memory */
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void sdram_writebuffer_16(uint32_t sdram_device, uint16_t* pbuffer, uint32_t writeaddr, uint32_t numhalfbyte_write);
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/* read a block of 16-bit data from the EXMC SDRAM memory */
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void sdram_readbuffer_16(uint32_t sdram_device, uint16_t* pbuffer, uint32_t readaddr, uint32_t numhalfbyte_read);
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/* write a word buffer(data is 32 bits) to the EXMC SDRAM memory */
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void sdram_writebuffer_32(uint32_t sdram_device, uint32_t* pbuffer, uint32_t writeaddr, uint32_t numword_write);
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/* read a block of 32-bit data from the EXMC SDRAM memory */
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void sdram_readbuffer_32(uint32_t sdram_device, uint32_t* pbuffer, uint32_t readaddr, uint32_t numword_read);
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#endif /* GD32F20X_SDRAM_EVAL_H */
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