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9b41d9ac5e
* Move the spi vendor list from Esp.h to its own header in eboot. * Fix ifdef issue with spi_vendors.h * Add initFlashQuirks() for any chip specific flash initialization. Called from user_init(). * namespace experimental for initFlashQuirks() * Slow down flash access during eboot firmware copy Part 1 - still some work to do * Slow down flash access during eboot firmware copy on XMC chips Part 2 - Identify the chip type. Note: there may still be issues with the access speed change. This is very much experimental. * Commit eboot.elf Co-authored-by: Develo <deveyes@gmail.com> Co-authored-by: Earle F. Philhower, III <earlephilhower@yahoo.com>
45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/*
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spi_flash_defs.h - SPI Flash chip commands and status registers
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Copyright (c) 2019 Mike Nix. All rights reserved.
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This file is part of the esp8266 core for Arduino environment.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef SPI_FLASH_DEFS_H
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#define SPI_FLASH_DEFS_H
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// Flash chip Status Register 3: Vendor XMC Output Drive levels
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#define SPI_FLASH_SR3_XMC_DRV_25 1
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#define SPI_FLASH_SR3_XMC_DRV_50 0
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#define SPI_FLASH_SR3_XMC_DRV_75 2
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#define SPI_FLASH_SR3_XMC_DRV_100 3
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#define SPI_FLASH_SR3_XMC_DRV_S 5
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#define SPI_FLASH_SR3_XMC_DRV_MASK 0x03
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// Flash Chip commands
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#define SPI_FLASH_CMD_RSR1 0x05 //Read Flash Status Register...
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#define SPI_FLASH_CMD_RSR2 0x35
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#define SPI_FLASH_CMD_RSR3 0x15
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#define SPI_FLASH_CMD_WSR1 0x01 //Write Flash Status Register...
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#define SPI_FLASH_CMD_WSR2 0x31
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#define SPI_FLASH_CMD_WSR3 0x11
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#define SPI_FLASH_CMD_WEVSR 0x50 //Write Enable Volatile Status Registers
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#define SPI_FLASH_CMD_WREN 0x06 //Write Enable
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#define SPI_FLASH_CMD_WRDI 0x04 //Write Disable
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#endif // SPI_FLASH_DEFS_H
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