diff options
Diffstat (limited to 'libmaple')
| -rw-r--r-- | libmaple/include/libmaple/i2c.h | 29 | ||||
| -rw-r--r-- | libmaple/include/libmaple/i2c_common.h | 78 | ||||
| -rw-r--r-- | libmaple/stm32f1/include/series/i2c.h | 8 |
3 files changed, 84 insertions, 31 deletions
diff --git a/libmaple/include/libmaple/i2c.h b/libmaple/include/libmaple/i2c.h index db5e6c8..d327c72 100644 --- a/libmaple/include/libmaple/i2c.h +++ b/libmaple/include/libmaple/i2c.h @@ -38,6 +38,8 @@ extern "C" { #endif #include <series/i2c.h> +#include <libmaple/i2c_common.h> + #include <libmaple/libmaple_types.h> #include <libmaple/rcc.h> #include <libmaple/nvic.h> @@ -56,15 +58,6 @@ typedef struct i2c_reg_map { __io uint32 TRISE; /**< TRISE (rise time) register */ } i2c_reg_map; -/** I2C device states */ -typedef enum i2c_state { - I2C_STATE_DISABLED = 0, /**< Disabled */ - I2C_STATE_IDLE = 1, /**< Idle */ - I2C_STATE_XFER_DONE = 2, /**< Done with transfer */ - I2C_STATE_BUSY = 3, /**< Busy */ - I2C_STATE_ERROR = -1 /**< Error occurred */ -} i2c_state; - /** * @brief I2C message type */ @@ -79,24 +72,6 @@ typedef struct i2c_msg { uint8 *data; /**< Data */ } i2c_msg; -/** - * @brief I2C device type. - */ -typedef struct i2c_dev { - i2c_reg_map *regs; /**< Register map */ - i2c_msg *msg; /**< Messages */ - uint32 error_flags; /**< Error flags, set on I2C error condition */ - volatile uint32 timestamp; /**< For internal use */ - struct gpio_dev *gpio_port; /**< SDA, SCL pins' GPIO port */ - uint16 msgs_left; /**< Messages left */ - uint8 sda_pin; /**< SDA bit on gpio_port */ - uint8 scl_pin; /**< SCL bit on gpio_port */ - rcc_clk_id clk_id; /**< RCC clock information */ - nvic_irq_num ev_nvic_line; /**< Event IRQ number */ - nvic_irq_num er_nvic_line; /**< Error IRQ number */ - volatile i2c_state state; /**< Device state */ -} i2c_dev; - /* * Register bit definitions */ diff --git a/libmaple/include/libmaple/i2c_common.h b/libmaple/include/libmaple/i2c_common.h new file mode 100644 index 0000000..2f36f80 --- /dev/null +++ b/libmaple/include/libmaple/i2c_common.h @@ -0,0 +1,78 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 Perry Hung (from <libmaple/i2c.h>). + * Copyright (c) 2012 LeafLabs, LLC. + * + * 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. + *****************************************************************************/ + +/** + * @file libmaple/include/libmaple/i2c_common.h + * @author Marti Bolivar <mbolivar@leaflabs.com> + * @brief This file is an implementation detail + * + * WARNING: CONTENTS UNSTABLE + * + * The existence of this file is an implementation detail. Its + * contents are not stable, so never include it directly. If you need + * something from here, #include <libmaple/i2c.h> instead. + */ + +#ifndef _LIBMAPLE_I2C_COMMON_H_ +#define _LIBMAPLE_I2C_COMMON_H_ + +#include <libmaple/libmaple_types.h> +#include <libmaple/nvic.h> +#include <libmaple/rcc.h> + +struct gpio_dev; +struct i2c_reg_map; +struct i2c_msg; + +/** I2C device states */ +typedef enum i2c_state { + I2C_STATE_DISABLED = 0, /**< Disabled */ + I2C_STATE_IDLE = 1, /**< Idle */ + I2C_STATE_XFER_DONE = 2, /**< Done with transfer */ + I2C_STATE_BUSY = 3, /**< Busy */ + I2C_STATE_ERROR = -1 /**< Error occurred */ +} i2c_state; + +/** + * @brief I2C device type. + */ +typedef struct i2c_dev { + struct i2c_reg_map *regs; /**< Register map */ + struct i2c_msg *msg; /**< Messages */ + uint32 error_flags; /**< Error flags, set on I2C error condition */ + volatile uint32 timestamp; /**< For internal use */ + struct gpio_dev *gpio_port; /**< SDA, SCL pins' GPIO port */ + uint16 msgs_left; /**< Messages left */ + uint8 sda_pin; /**< SDA bit on gpio_port */ + uint8 scl_pin; /**< SCL bit on gpio_port */ + rcc_clk_id clk_id; /**< RCC clock information */ + nvic_irq_num ev_nvic_line; /**< Event IRQ number */ + nvic_irq_num er_nvic_line; /**< Error IRQ number */ + volatile i2c_state state; /**< Device state */ +} i2c_dev; + +#endif diff --git a/libmaple/stm32f1/include/series/i2c.h b/libmaple/stm32f1/include/series/i2c.h index 0e4b3ba..f9f1e43 100644 --- a/libmaple/stm32f1/include/series/i2c.h +++ b/libmaple/stm32f1/include/series/i2c.h @@ -33,6 +33,8 @@ #ifndef _LIBMAPLE_STM32F1_I2C_H_ #define _LIBMAPLE_STM32F1_I2C_H_ +#include <libmaple/i2c_common.h> + /* * Register maps */ @@ -48,9 +50,7 @@ struct i2c_reg_map; * Devices */ -struct i2c_dev; - -extern struct i2c_dev* const I2C1; -extern struct i2c_dev* const I2C2; +extern i2c_dev* const I2C1; +extern i2c_dev* const I2C2; #endif /* _LIBMAPLE_STM32F1_I2C_H_ */ |