83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/*
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* Licensed under the GNU General Public License version 2 with exceptions. See
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* LICENSE file in the project root for full license information
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*/
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/** \file
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* \brief
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* ESC hardware specifoc EEPROM emulation functions.
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*/
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#ifndef __esc_hw_eep__
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#define __esc_hw_eep__
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#include "cc.h"
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#include "esc_eep.h"
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#include "xmc_gpio.h"
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#include "xmc_flash.h"
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#include "xmc_fce.h"
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/* if defined: reload default EEPROM content if pulled low */
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#ifdef XMC4800_F144x2048
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#define EEP_DEFAULT_BTN P15_13
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/* if defined: flash BUSY indicator */
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#define EEP_BUSY_LED P5_9
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#endif
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#ifdef XMC4300_F100x256
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#define EEP_DEFAULT_BTN P3_4
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/* if defined: flash BUSY indicator */
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#define EEP_BUSY_LED P4_0
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#endif
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/* used CRC32 kernel for checksum calculation */
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#define EPP_FCE_CRC32 XMC_FCE_CRC32_0
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/* idle timeout in ns before actual flash write will be issued */
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#define EEP_IDLE_TIMEOUT 100000000
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/* Packes per emulated EEPROM block*/
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#define EEP_PAGES_PER_BLOCK 16
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#ifdef XMC4800_F144x2048
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#define EEP_BYTES_PER_SECTOR 0x040000
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#define EEP_SECTOR_A XMC_FLASH_SECTOR_14
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#define EEP_SECTOR_B XMC_FLASH_SECTOR_15
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#endif
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#ifdef XMC4300_F100x256
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#define EEP_BYTES_PER_SECTOR 0x04000
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#define EEP_SECTOR_A XMC_FLASH_SECTOR_6
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#define EEP_SECTOR_B XMC_FLASH_SECTOR_7
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#endif
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/* block header */
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typedef struct CC_PACKED
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{
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int32_t seq;
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uint32_t crc;
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} eep_header_t;
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/* calulate resulting sizes */
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#define EEP_BYTES_PER_BLOCK (EEP_PAGES_PER_BLOCK * XMC_FLASH_BYTES_PER_PAGE)
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#define EPP_BLOCKS_PER_SECT (EEP_BYTES_PER_SECTOR / EEP_BYTES_PER_BLOCK)
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#define EEP_DATA_BYTES (EEP_BYTES_PER_BLOCK - sizeof(eep_header_t))
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/* eeprom size increments in steps of 0x80 bytes */
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#define EEP_EMU_BYTES (EEP_DATA_BYTES & ~0x7f)
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/* block structure */
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typedef struct CC_PACKED
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{
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eep_header_t header;
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uint8_t data[EEP_DATA_BYTES];
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} eep_block_t;
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/* periodic task */
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void EEP_hw_process (void);
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#endif
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