d13ada1162
- uprintf -> dprintf - Fix atsam "vendor" eeprom. - Bump Kinetis K20x to 64 bytes, too. - Rollback Kinetis to 32 bytes as partitioning can only be done once. Add warning about changing the value. - Change RAM-backed "fake" EEPROM implementations to match eeconfig's current usage. - Add 24LC128 by request.
52 lines
1.6 KiB
C
52 lines
1.6 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"
|
|
#include "eeprom_transient.h"
|
|
|
|
__attribute__((aligned(4))) static uint8_t transientBuffer[TRANSIENT_EEPROM_SIZE] = {0};
|
|
|
|
size_t clamp_length(intptr_t offset, size_t len) {
|
|
if (offset + len > TRANSIENT_EEPROM_SIZE) {
|
|
len = TRANSIENT_EEPROM_SIZE - offset;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
void eeprom_driver_init(void) { eeprom_driver_erase(); }
|
|
|
|
void eeprom_driver_erase(void) { memset(transientBuffer, 0x00, TRANSIENT_EEPROM_SIZE); }
|
|
|
|
void eeprom_read_block(void *buf, const void *addr, size_t len) {
|
|
intptr_t offset = (intptr_t)addr;
|
|
memset(buf, 0x00, len);
|
|
len = clamp_length(offset, len);
|
|
if (len > 0) {
|
|
memcpy(buf, &transientBuffer[offset], len);
|
|
}
|
|
}
|
|
|
|
void eeprom_write_block(const void *buf, void *addr, size_t len) {
|
|
intptr_t offset = (intptr_t)addr;
|
|
len = clamp_length(offset, len);
|
|
if (len > 0) {
|
|
memcpy(&transientBuffer[offset], buf, len);
|
|
}
|
|
}
|