mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-05 01:15:19 +00:00
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
|
/* Copyright 2020 Nick Brassel (tzarc)
|
||
|
*
|
||
|
* This program is free software: you can redistribute it and/or modify
|
||
|
* it under the terms of the GNU General Public License as published by
|
||
|
* the Free Software Foundation, either version 2 of the License, or
|
||
|
* (at your option) any later version.
|
||
|
*
|
||
|
* This program is distributed in the hope that it will be useful,
|
||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
* GNU General Public License for more details.
|
||
|
*
|
||
|
* You should have received a copy of the GNU General Public License
|
||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
*/
|
||
|
|
||
|
#pragma once
|
||
|
|
||
|
/*
|
||
|
The slave select pin of the EEPROM.
|
||
|
This needs to be a normal GPIO pin_t value, such as A7.
|
||
|
*/
|
||
|
#ifndef EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN
|
||
|
# error "No chip select pin defined -- missing EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN"
|
||
|
#endif
|
||
|
|
||
|
/*
|
||
|
The clock divisor for SPI to ensure that the MCU is within the
|
||
|
specifications of the EEPROM chip. Generally this will be PCLK divided by
|
||
|
the intended divisor -- check your clock settings and the datasheet of
|
||
|
your EEPROM.
|
||
|
*/
|
||
|
#ifndef EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR
|
||
|
# ifdef __AVR__
|
||
|
# define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR 8
|
||
|
# else
|
||
|
# define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR 64
|
||
|
# endif
|
||
|
#endif
|
||
|
|
||
|
/*
|
||
|
The SPI mode to communicate with the EEPROM.
|
||
|
*/
|
||
|
#ifndef EXTERNAL_EEPROM_SPI_MODE
|
||
|
# define EXTERNAL_EEPROM_SPI_MODE 0
|
||
|
#endif
|
||
|
|
||
|
/*
|
||
|
Whether or not the SPI communication between the MCU and EEPROM should be
|
||
|
LSB-first.
|
||
|
*/
|
||
|
#ifndef EXTERNAL_EEPROM_SPI_LSBFIRST
|
||
|
# define EXTERNAL_EEPROM_SPI_LSBFIRST false
|
||
|
#endif
|
||
|
|
||
|
/*
|
||
|
The total size of the EEPROM, in bytes. The EEPROM datasheet will usually
|
||
|
specify this value in kbits, and will require conversion to bytes.
|
||
|
*/
|
||
|
#ifndef EXTERNAL_EEPROM_BYTE_COUNT
|
||
|
# define EXTERNAL_EEPROM_BYTE_COUNT 8192
|
||
|
#endif
|
||
|
|
||
|
/*
|
||
|
The page size in bytes of the EEPROM, as specified in the datasheet.
|
||
|
*/
|
||
|
#ifndef EXTERNAL_EEPROM_PAGE_SIZE
|
||
|
# define EXTERNAL_EEPROM_PAGE_SIZE 32
|
||
|
#endif
|
||
|
|
||
|
/*
|
||
|
The address size in bytes of the EEPROM. For EEPROMs with <=256 bytes, this
|
||
|
will likely be 1. For EEPROMs >256 and <=65536, this will be 2. For EEPROMs
|
||
|
>65536, this will likely need to be 4.
|
||
|
|
||
|
As expected, consult the datasheet for specifics of your EEPROM.
|
||
|
*/
|
||
|
#ifndef EXTERNAL_EEPROM_ADDRESS_SIZE
|
||
|
# define EXTERNAL_EEPROM_ADDRESS_SIZE 2
|
||
|
#endif
|