- /* 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);
- }
- }
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