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author | Nick Brassel <[email protected]> | 2021-08-29 08:20:25 +1000 |
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committer | Nick Brassel <[email protected]> | 2021-08-29 08:20:25 +1000 |
commit | f061ca497464fe85284906fb163a33eaee7a91ef (patch) | |
tree | 33ef1bfb529aed382e8526c607c4e18717f92571 /platforms/avr/drivers/i2c_master.h | |
parent | ff65185dec6f97be1eb49f17cea526a0d0bbf3d6 (diff) | |
parent | 4bad375d7c09d949a9dcdd4feba147c9c7a67ec6 (diff) | |
download | qmk_firmware-f061ca497464fe85284906fb163a33eaee7a91ef.tar.gz qmk_firmware-f061ca497464fe85284906fb163a33eaee7a91ef.zip |
Breaking changes develop merge to master, 2021Q3 edition. (#14196)breakpoint_2021_08_280.14.0
Diffstat (limited to 'platforms/avr/drivers/i2c_master.h')
-rw-r--r-- | platforms/avr/drivers/i2c_master.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/platforms/avr/drivers/i2c_master.h b/platforms/avr/drivers/i2c_master.h new file mode 100644 index 0000000000..e5af73364b --- /dev/null +++ b/platforms/avr/drivers/i2c_master.h @@ -0,0 +1,43 @@ +/* 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-master-lib + */ + +#pragma once + +#define I2C_READ 0x01 +#define I2C_WRITE 0x00 + +typedef int16_t i2c_status_t; + +#define I2C_STATUS_SUCCESS (0) +#define I2C_STATUS_ERROR (-1) +#define I2C_STATUS_TIMEOUT (-2) + +#define I2C_TIMEOUT_IMMEDIATE (0) +#define I2C_TIMEOUT_INFINITE (0xFFFF) + +void i2c_init(void); +i2c_status_t i2c_start(uint8_t address, uint16_t timeout); +i2c_status_t i2c_write(uint8_t data, uint16_t timeout); +int16_t i2c_read_ack(uint16_t timeout); +int16_t i2c_read_nack(uint16_t timeout); +i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout); +i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout); +i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout); +i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout); +void i2c_stop(void); |