0815ae9c58
- Allow xfer packet to send up to 20 bytes before receiving - Remove interrupt use since it's only polling - Check proper status for TX finish.
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*
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* Copyright (c) 2018 naehrwert
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* Copyright (c) 2020-2026 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 <http://www.gnu.org/licenses/>.
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*/
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#ifndef _I2C_H_
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#define _I2C_H_
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#include <utils/types.h>
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#define I2C_1 0
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#define I2C_2 1
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#define I2C_3 2
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#define I2C_4 3
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#define I2C_5 4
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#define I2C_6 5
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void i2c_init(u32 i2c_idx);
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int i2c_xfer_packet(u32 i2c_idx, u32 dev_addr, const u8 *tx_buf, u32 tx_size, u8 *rx_buf, u32 rx_size);
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int i2c_send_buf_big(u32 i2c_idx, u32 dev_addr, const u8 *buf, u32 size);
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int i2c_recv_buf_big(u8 *buf, u32 size, u32 i2c_idx, u32 dev_addr, u32 reg);
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int i2c_send_buf_small(u32 i2c_idx, u32 dev_addr, u32 reg, const u8 *buf, u32 size);
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int i2c_recv_buf_small(u8 *buf, u32 size, u32 i2c_idx, u32 dev_addr, u32 reg);
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int i2c_send_byte(u32 i2c_idx, u32 dev_addr, u32 reg, u8 val);
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u8 i2c_recv_byte(u32 i2c_idx, u32 dev_addr, u32 reg);
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#endif
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