From 6b47dac54b478081231b88e6e143a150f341c0cb Mon Sep 17 00:00:00 2001 From: Marti Bolivar Date: Wed, 15 Oct 2014 14:37:20 +0800 Subject: Add STM32F2 I2C support. Untested, but fixes the build and at least provides the correct register map and base pointers. Signed-off-by: Marti Bolivar --- libmaple/stm32f2/include/series/i2c.h | 80 +++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 libmaple/stm32f2/include/series/i2c.h (limited to 'libmaple/stm32f2/include/series/i2c.h') diff --git a/libmaple/stm32f2/include/series/i2c.h b/libmaple/stm32f2/include/series/i2c.h new file mode 100644 index 0000000..b231256 --- /dev/null +++ b/libmaple/stm32f2/include/series/i2c.h @@ -0,0 +1,80 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 Perry Hung (from ). + * Copyright (c) 2012 LeafLabs, LLC. + * Copyright (c) 2014 Google, Inc. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +#ifndef _LIBMAPLE_STM32F2_I2C_H_ +#define _LIBMAPLE_STM32F2_I2C_H_ + +#include +#include + +/* + * Register maps + */ + +/** I2C register map type */ +typedef struct i2c_reg_map { + __io uint32 CR1; /**< Control register 1 */ + __io uint32 CR2; /**< Control register 2 */ + __io uint32 OAR1; /**< Own address register 1 */ + __io uint32 OAR2; /**< Own address register 2 */ + __io uint32 DR; /**< Data register */ + __io uint32 SR1; /**< Status register 1 */ + __io uint32 SR2; /**< Status register 2 */ + __io uint32 CCR; /**< Clock control register */ + __io uint32 TRISE; /**< TRISE (rise time) register */ + __io uint32 FLTR; /**< Noise filter register */ +} i2c_reg_map; + +/** I2C1 register map base pointer */ +#define I2C1_BASE ((struct i2c_reg_map*)0x40005400) +/** I2C2 register map base pointer */ +#define I2C2_BASE ((struct i2c_reg_map*)0x40005800) +/** I2C3 register map base pointer */ +#define I2C3_BASE ((struct i2c_reg_map*)0x40005C00) + +/* + * Devices + */ + +extern i2c_dev* const I2C1; +extern i2c_dev* const I2C2; +extern i2c_dev* const I2C3; + +/* + * For internal use + */ + +static inline uint32 _i2c_bus_clk(i2c_dev *dev) { + /* All the I2C peripherals are on APB1 */ + return STM32_PCLK1 / (1000 * 1000); +} + +#undef _I2C_HAVE_IRQ_FIXUP +#undef _I2C_HAVE_DEPRECATED_I2C_REMAP + +#endif /* _LIBMAPLE_STM32F1_I2C_H_ */ -- cgit v1.2.3