0a54c3e336
This won't work on F2, which at times has SDA and SCL on different ports (e.g. I2C3 SDA on PC9, SCL on PA8). Add .sda_port and .scl_port replacements, which are used when the now-deprecated .gpio_port is null. Use them correctly everywhere, with some new i2c_private.h helper functionality. Sigh. The F1 I2C code tries too hard to guess what you wanted; it's not porting well at all. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
80 lines
3.5 KiB
C
80 lines
3.5 KiB
C
/******************************************************************************
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* The MIT License
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*
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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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#ifndef _LIBMAPLE_I2C_PRIVATE_H_
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#define _LIBMAPLE_I2C_PRIVATE_H_
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#include <libmaple/i2c_common.h>
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/* For old-style definitions (SDA/SCL on same GPIO device) */
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#define I2C_DEV_OLD(num, port, sda, scl) \
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{ \
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.regs = I2C##num##_BASE, \
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.gpio_port = port, \
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.scl_port = NULL, \
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.sda_port = NULL, \
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.sda_pin = sda, \
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.scl_pin = scl, \
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.clk_id = RCC_I2C##num, \
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.ev_nvic_line = NVIC_I2C##num##_EV, \
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.er_nvic_line = NVIC_I2C##num##_ER, \
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.state = I2C_STATE_DISABLED, \
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}
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/* For new-style definitions (SDA/SCL may be on different GPIO devices) */
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#define I2C_DEV_NEW(num, sdaport, sdabit, sclport, sclbit) \
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{ \
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.regs = I2C##num##_BASE, \
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.gpio_port = NULL, \
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.scl_port = sclport, \
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.scl_pin = sclbit, \
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.sda_port = sdaport, \
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.sda_pin = sdabit, \
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.clk_id = RCC_I2C##num, \
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.ev_nvic_line = NVIC_I2C##num##_EV, \
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.er_nvic_line = NVIC_I2C##num##_ER, \
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.state = I2C_STATE_DISABLED, \
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}
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void _i2c_irq_handler(i2c_dev *dev);
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void _i2c_irq_error_handler(i2c_dev *dev);
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struct gpio_dev;
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static inline struct gpio_dev* scl_port(const i2c_dev *dev) {
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return (dev->gpio_port == NULL) ? dev->scl_port : dev->gpio_port;
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}
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static inline struct gpio_dev* sda_port(const i2c_dev *dev) {
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return (dev->gpio_port == NULL) ? dev->sda_port : dev->gpio_port;
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}
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/* Auxiliary procedure for enabling an I2C peripheral; `flags' as for
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* i2c_master_enable(). */
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void _i2c_set_ccr_trise(i2c_dev *dev, uint32 flags);
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#endif /* _LIBMAPLE_I2C_PRIVATE_H_ */
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