dingusppc/devices/common/i2c/i2cprom.h

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2022-08-14 20:47:56 +00:00
/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-22 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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 3 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 <https://www.gnu.org/licenses/>.
*/
/** @file Generic PROM device programmable over I2C. */
#ifndef I2C_PROM_H
#define I2C_PROM_H
#include <devices/common/hwcomponent.h>
#include <devices/common/i2c/i2c.h>
#include <cinttypes>
#include <memory>
class I2CProm : public I2CDevice, public HWComponent
{
public:
I2CProm(uint8_t dev_addr, int size);
~I2CProm() = default;
// I2CDevice methods
void start_transaction();
bool send_subaddress(uint8_t sub_addr);
bool send_byte(uint8_t data);
bool receive_byte(uint8_t* p_data);
// data management methods
void fill_memory(int start, int size, uint8_t c);
void set_memory(int start, const uint8_t* in_data, int size);
private:
std::unique_ptr<uint8_t[]> data;
int rom_size = 0;
int pos = 0;
uint8_t my_addr = 0xA0;
};
#endif // I2C_PROM_H