mirror of
https://github.com/betaflight/betaflight.git
synced 2025-07-15 12:25:20 +03:00
bb6cb9ebfe
Makes I2C timeout independent of system clock speed. Timeout is now in microseconds and is set to 10000us(same as in INAV).
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* This file is part of Cleanflight and Betaflight.
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*
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* Cleanflight and Betaflight are free software. You can redistribute
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* this software and/or modify this software under the terms of the
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* GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option)
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* any later version.
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*
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* Cleanflight and Betaflight are distributed in the hope that they
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the 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 software.
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*
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "platform.h"
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#include "drivers/io_types.h"
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#include "drivers/rcc_types.h"
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#define I2C_TIMEOUT_US 10000
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#define I2C_TIMEOUT_SYS_TICKS (I2C_TIMEOUT_US / 1000)
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#define I2C_PIN_SEL_MAX 4
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typedef struct i2cPinDef_s {
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ioTag_t ioTag;
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#if defined(STM32F4) || defined(STM32H7) || defined(STM32G4)
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uint8_t af;
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#endif
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} i2cPinDef_t;
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#if defined(STM32F4) || defined(STM32H7) || defined(STM32G4)
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#define I2CPINDEF(pin, af) { DEFIO_TAG_E(pin), af }
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#elif defined(STM32F1)
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#define I2CPINDEF(pin, af) { DEFIO_TAG_E(pin) }
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#else
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#define I2CPINDEF(pin) { DEFIO_TAG_E(pin) }
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#endif
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typedef struct i2cHardware_s {
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I2CDevice device;
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I2C_TypeDef *reg;
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i2cPinDef_t sclPins[I2C_PIN_SEL_MAX];
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i2cPinDef_t sdaPins[I2C_PIN_SEL_MAX];
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rccPeriphTag_t rcc;
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#if !defined(STM32F303xC)
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uint8_t ev_irq;
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uint8_t er_irq;
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#endif
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} i2cHardware_t;
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extern const i2cHardware_t i2cHardware[];
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#if defined(STM32F1) || defined(STM32F4)
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typedef struct i2cState_s {
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volatile bool error;
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volatile bool busy;
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volatile uint8_t addr;
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volatile uint8_t reg;
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volatile uint8_t bytes;
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volatile uint8_t writing;
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volatile uint8_t reading;
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volatile uint8_t* write_p;
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volatile uint8_t* read_p;
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} i2cState_t;
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#endif
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typedef struct i2cDevice_s {
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const i2cHardware_t *hardware;
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I2C_TypeDef *reg;
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IO_t scl;
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IO_t sda;
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#if defined(STM32F4) || defined(STM32H7) || defined(STM32G4)
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uint8_t sclAF;
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uint8_t sdaAF;
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#endif
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bool overClock;
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bool pullUp;
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// MCU/Driver dependent member follows
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#if defined(STM32F1) || defined(STM32F4)
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i2cState_t state;
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#endif
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#ifdef USE_HAL_DRIVER
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I2C_HandleTypeDef handle;
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#endif
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} i2cDevice_t;
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extern i2cDevice_t i2cDevice[];
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