forked from forks/qmk_firmware
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* Copyright (C) 2019 Elia Ritterbusch
|
|
+
|
|
* 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/>.
|
|
*/
|
|
/* Library made by: g4lvanix
|
|
* GitHub repository: https://github.com/g4lvanix/I2C-slave-lib
|
|
|
|
Info: Inititate the library by giving the required address.
|
|
Read or write to the necessary buffer according to the opperation.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#ifndef I2C_SLAVE_REG_COUNT
|
|
|
|
# if defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
|
# include "transport.h"
|
|
# define I2C_SLAVE_REG_COUNT sizeof(split_shared_memory_t)
|
|
# else // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
|
# define I2C_SLAVE_REG_COUNT 30
|
|
# endif // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
|
|
|
#endif // I2C_SLAVE_REG_COUNT
|
|
|
|
_Static_assert(I2C_SLAVE_REG_COUNT < 256, "I2C target registers must be single byte");
|
|
|
|
extern volatile uint8_t i2c_slave_reg[I2C_SLAVE_REG_COUNT];
|
|
|
|
void i2c_slave_init(uint8_t address);
|
|
void i2c_slave_stop(void);
|