mirror of
https://github.com/pascallanger/DIY-Multiprotocol-TX-Module.git
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86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
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/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2010 Perry Hung (from <libmaple/i2c.h>).
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* Copyright (c) 2012 LeafLabs, LLC.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/**
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* @file libmaple/stm32f1/include/series/i2c.h
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* @brief STM32F1 I2C
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*/
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#ifndef _LIBMAPLE_STM32F1_I2C_H_
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#define _LIBMAPLE_STM32F1_I2C_H_
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#include <libmaple/i2c_common.h>
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#include <libmaple/gpio.h>
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#include <libmaple/stm32.h>
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/*
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* Register maps
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*/
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struct i2c_reg_map;
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/** STM32F1 I2C1 register map base pointer */
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#define I2C1_BASE ((struct i2c_reg_map*)0x40005400)
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/** STM32F1 I2C2 register map base pointer */
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#define I2C2_BASE ((struct i2c_reg_map*)0x40005800)
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/*
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* Devices
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*/
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extern i2c_dev* const I2C1;
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extern i2c_dev* const I2C2;
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/*
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* For internal use
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*/
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static inline uint32 _i2c_bus_clk(i2c_dev *dev) {
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/* Both I2C peripherals are on APB1 */
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return STM32_PCLK1 / (1000 * 1000);
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}
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#define _I2C_HAVE_IRQ_FIXUP 1
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void _i2c_irq_priority_fixup(i2c_dev *dev);
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/*
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* Deprecated functionality
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*/
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/* Flag to use alternate pin mapping in i2c_master_enable(). */
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#define _I2C_HAVE_DEPRECATED_I2C_REMAP 1
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#define I2C_REMAP 0x4
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static inline void _i2c_handle_remap(i2c_dev *dev, uint32 flags) {
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if ((dev == I2C1) && (flags & I2C_REMAP)) {
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afio_remap(AFIO_REMAP_I2C1);
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I2C1->sda_pin = 9;
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I2C1->scl_pin = 8;
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}
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}
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#endif /* _LIBMAPLE_STM32F1_I2C_H_ */
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