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-rw-r--r--libmaple/include/libmaple/i2c.h29
-rw-r--r--libmaple/include/libmaple/i2c_common.h78
-rw-r--r--libmaple/stm32f1/include/series/i2c.h8
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_ */