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55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*
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* This file is part of the i2cscan project.
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* Copyright 2023 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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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 <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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#define I2C_ADDREND (0x80)
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#define I2C_BUFSIZE (256)
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typedef enum{
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I2C_SPEED_10K,
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I2C_SPEED_100K,
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I2C_SPEED_400K,
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I2C_SPEED_1M,
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I2C_SPEED_2M, // EXPERIMENTAL! Could be unstable!!! (speed near 1.9Mbaud)
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I2C_SPEED_AMOUNT
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} i2c_speed_t;
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extern i2c_speed_t i2c_curspeed;
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extern volatile uint8_t i2c_scanmode, i2c_got_DMA;
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// timeout of I2C bus in ms
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#define I2C_TIMEOUT (100)
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void i2c_setup(i2c_speed_t speed);
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uint8_t *read_i2c(uint8_t addr, uint8_t nbytes);
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uint8_t *read_i2c_reg(uint8_t addr, uint8_t reg, uint8_t nbytes);
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uint16_t *read_i2c_reg16(uint8_t addr, uint16_t reg16, uint8_t nbytes);
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uint8_t write_i2c(uint8_t addr, uint8_t *data, uint8_t nbytes);
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uint8_t write_i2c_dma(uint8_t addr, uint8_t *data, uint8_t nbytes);
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uint8_t read_i2c_dma(uint8_t addr, uint8_t nbytes);
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void i2c_bufdudump();
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int i2cdma_haderr();
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void endianness(uint8_t isbig);
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int i2c_getwords(uint16_t *buf, int bufsz);
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void i2c_init_scan_mode();
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int i2c_scan_next_addr(uint8_t *addr);
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