mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-11-25 20:56:42 +00:00
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* Copyright 2019 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/>.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
|
|
#include "eeprom_driver.h"
|
|
|
|
uint8_t eeprom_read_byte(const uint8_t *addr) {
|
|
uint8_t ret = 0;
|
|
eeprom_read_block(&ret, addr, 1);
|
|
return ret;
|
|
}
|
|
|
|
uint16_t eeprom_read_word(const uint16_t *addr) {
|
|
uint16_t ret = 0;
|
|
eeprom_read_block(&ret, addr, 2);
|
|
return ret;
|
|
}
|
|
|
|
uint32_t eeprom_read_dword(const uint32_t *addr) {
|
|
uint32_t ret = 0;
|
|
eeprom_read_block(&ret, addr, 4);
|
|
return ret;
|
|
}
|
|
|
|
void eeprom_write_byte(uint8_t *addr, uint8_t value) {
|
|
eeprom_write_block(&value, addr, 1);
|
|
}
|
|
|
|
void eeprom_write_word(uint16_t *addr, uint16_t value) {
|
|
eeprom_write_block(&value, addr, 2);
|
|
}
|
|
|
|
void eeprom_write_dword(uint32_t *addr, uint32_t value) {
|
|
eeprom_write_block(&value, addr, 4);
|
|
}
|
|
|
|
void eeprom_update_block(const void *buf, void *addr, size_t len) {
|
|
uint8_t read_buf[len];
|
|
eeprom_read_block(read_buf, addr, len);
|
|
if (memcmp(buf, read_buf, len) != 0) {
|
|
eeprom_write_block(buf, addr, len);
|
|
}
|
|
}
|
|
|
|
void eeprom_update_byte(uint8_t *addr, uint8_t value) {
|
|
uint8_t orig = eeprom_read_byte(addr);
|
|
if (orig != value) {
|
|
eeprom_write_byte(addr, value);
|
|
}
|
|
}
|
|
|
|
void eeprom_update_word(uint16_t *addr, uint16_t value) {
|
|
uint16_t orig = eeprom_read_word(addr);
|
|
if (orig != value) {
|
|
eeprom_write_word(addr, value);
|
|
}
|
|
}
|
|
|
|
void eeprom_update_dword(uint32_t *addr, uint32_t value) {
|
|
uint32_t orig = eeprom_read_dword(addr);
|
|
if (orig != value) {
|
|
eeprom_write_dword(addr, value);
|
|
}
|
|
}
|
|
|
|
void eeprom_driver_format(bool erase) __attribute__((weak));
|
|
void eeprom_driver_format(bool erase) {
|
|
(void)erase; /* The default implementation assumes that the eeprom must be erased in order to be usable. */
|
|
eeprom_driver_erase();
|
|
}
|