2019-03-10 06:57:42 -07:00
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/*
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Copyright 2019 Benjamin Vedder benjamin@vedder.se
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This file is part of the VESC firmware.
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The VESC firmware 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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The VESC firmware 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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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_BB_H_
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#define I2C_BB_H_
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#include "ch.h"
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#include "hal.h"
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#include "stdint.h"
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#include "stdbool.h"
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2022-04-19 08:21:19 -07:00
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typedef enum {
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I2C_BB_RATE_100K = 0,
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I2C_BB_RATE_200K,
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I2C_BB_RATE_400K,
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I2C_BB_RATE_700K
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} I2C_BB_RATE;
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2019-03-10 06:57:42 -07:00
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typedef struct {
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2022-02-23 16:19:09 -08:00
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stm32_gpio_t *sda_gpio; int sda_pin;
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stm32_gpio_t *scl_gpio; int scl_pin;
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2022-04-19 08:21:19 -07:00
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I2C_BB_RATE rate;
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2019-03-10 06:57:42 -07:00
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bool has_started;
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bool has_error;
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2019-05-03 10:55:36 -07:00
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mutex_t mutex;
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2019-03-10 06:57:42 -07:00
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} i2c_bb_state;
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void i2c_bb_init(i2c_bb_state *s);
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void i2c_bb_restore_bus(i2c_bb_state *s);
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bool i2c_bb_tx_rx(i2c_bb_state *s, uint16_t addr, uint8_t *txbuf, size_t txbytes, uint8_t *rxbuf, size_t rxbytes);
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#endif /* I2C_BB_H_ */
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