forked from forks/qmk_firmware
172e6a7030
* Extensible split data sync capability through transactions. - Split common transport has been split up between the transport layer and data layer. - Split "transactions" model used, with convergence between I2C and serial data definitions. - Slave matrix "generation count" is used to determine if the full slave matrix needs to be retrieved. - Encoders get the same "generation count" treatment. - All other blocks of data are synchronised when a change is detected. - All transmissions have a globally-configurable deadline before a transmission is forced (`FORCED_SYNC_THROTTLE_MS`, default 100ms). - Added atomicity for all core-synced data, preventing partial updates - Added retries to AVR i2c_master's i2c_start, to minimise the number of failed transactions when interrupts are disabled on the slave due to atomicity checks. - Some keyboards have had slight modifications made in order to ensure that they still build due to firmware size restrictions. * Fixup LED_MATRIX compile. * Parameterise ERROR_DISCONNECT_COUNT.
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* Copyright (C) 2019 Elia Ritterbusch
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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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*
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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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*
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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 <https://www.gnu.org/licenses/>.
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*/
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/* Library made by: g4lvanix
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* GitHub repository: https://github.com/g4lvanix/I2C-slave-lib
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Info: Inititate the library by giving the required address.
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Read or write to the necessary buffer according to the opperation.
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*/
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#pragma once
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#ifndef I2C_SLAVE_REG_COUNT
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# if defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
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# include "transport.h"
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# define I2C_SLAVE_REG_COUNT sizeof(split_shared_memory_t)
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# else // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
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# define I2C_SLAVE_REG_COUNT 30
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# endif // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
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#endif // I2C_SLAVE_REG_COUNT
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_Static_assert(I2C_SLAVE_REG_COUNT < 256, "I2C target registers must be single byte");
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extern volatile uint8_t i2c_slave_reg[I2C_SLAVE_REG_COUNT];
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void i2c_slave_init(uint8_t address);
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void i2c_slave_stop(void);
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