mirror of https://github.com/arendst/Tasmota.git
89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
/*
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support_eeprom.ino - eeprom support for Sonoff-Tasmota
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Copyright (C) 2021 Theo Arends & Gerhard Mutz
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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supports hardware i2c eeprom 24c256 and flash eeprom simulation on ESP8266 and ESP32
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all ESP8266 linker files contain 4k eeprom partition
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ESP32 requires esp32_partition_app1984k_spiffs60k.csv for 4k eeprom
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*/
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#ifdef USE_EEPROM
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#ifdef USE_24C256
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// i2c eeprom
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#include <Eeprom24C128_256.h>
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#define EEPROM_ADDRESS 0x50
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static Eeprom24C128_256 m_eeprom(EEPROM_ADDRESS);
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void eeprom_writeBytes(uint32_t addr, uint32_t len, uint8_t *buff) {
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m_eeprom.writeBytes(addr,len,(uint8_t*)buff);
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}
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void eeprom_readBytes(uint32_t addr, uint32_t len, uint8_t *buff) {
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m_eeprom.readBytes(addr,len,(uint8_t*)buff);
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}
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uint32_t eeprom_init(uint32_t size) {
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if (TasmotaGlobal.i2c_enabled) {
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if (I2cActive(EEPROM_ADDRESS) || I2cSetDevice(EEPROM_ADDRESS)) {
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// eeprom is present
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I2cSetActiveFound(EEPROM_ADDRESS, "24C256");
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return 1;
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}
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}
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return 0;
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}
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#else // USE_24C256
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#ifdef ESP8266
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// esp8266 uses eeprom section
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uint32_t eeprom_init(uint32_t size) {
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EEPROM.begin(size);
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return 1;
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}
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void eeprom_writeBytes(uint32_t adr, uint32_t len, uint8_t *buf) {
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for (uint32_t cnt=0; cnt<len; cnt++) {
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EEPROM.write(adr++, *buf++);
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}
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EEPROM.commit();
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}
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void eeprom_readBytes(uint32_t adr, uint32_t len, uint8_t *buf) {
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for (uint32_t cnt=0; cnt<len; cnt++) {
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*buf++ = EEPROM.read(adr++);
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}
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}
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#endif // ESP8266
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#ifdef ESP32
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// esp32 uses eeprom section
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uint32_t eeprom_init(uint32_t size) {
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return EEPROM.begin(size);
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}
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void eeprom_writeBytes(uint32_t addr, uint32_t len, uint8_t *buff) {
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EEPROM.writeBytes(addr, buff, len);
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EEPROM.commit();
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}
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void eeprom_readBytes(uint32_t addr, uint32_t len, uint8_t *buff) {
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EEPROM.readBytes(addr, buff, len);
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}
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#endif // ESP32
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#endif // USE_24C256
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#endif // USE_EEPROM
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