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authorMarti Bolivar <mbolivar@leaflabs.com>2012-06-20 13:47:47 -0400
committerMarti Bolivar <mbolivar@leaflabs.com>2012-06-22 14:06:09 -0400
commitbcd28f11c2e7adfd488a10e59ed9dfad7877746d (patch)
treed48367ef93fc78c7238479c6c2ed6991c5159a95 /libmaple/stm32f1/include
parent041a1c28d3ec5e99793a7afab340ae53e68ea1cf (diff)
downloadlibrambutan-bcd28f11c2e7adfd488a10e59ed9dfad7877746d.tar.gz
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I2C: Restore on F1, refactoring prep for F2.
Bring back <libmaple/i2c.h> support on STM32F1 with a view towards how it'll be implemented on STM32F2. There are still many F1-isms in libmaple/i2c.c and <libmaple/i2c.h>, to be dealt with subsequently. Move device declarations and base pointer definitions to a new F1 <series/i2c.h>. The register maps and bit definitions themselves are identical on both series, so leave them in the libmaple header. Add i2c_private.h, which contains: - I2C_DEV(), a convenience macro for defining an i2c_dev, and - declarations for the event and error IRQ handlers. The IRQ handlers are large, and I2C is slow anyway, so I see no reason to make them inline in the private header (as we do for some other peripherals). We just expose the existing ones that were formerly static in libmaple/i2c.c, but prefix the names with underscore. Move the device declarations and IRQ handlers into new stm32f1/i2c.c. These use the i2c_private.h API. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Diffstat (limited to 'libmaple/stm32f1/include')
-rw-r--r--libmaple/stm32f1/include/series/i2c.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/libmaple/stm32f1/include/series/i2c.h b/libmaple/stm32f1/include/series/i2c.h
new file mode 100644
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+++ b/libmaple/stm32f1/include/series/i2c.h
@@ -0,0 +1,56 @@
+/******************************************************************************
+ * 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/stm32f1/include/series/i2c.h
+ * @brief STM32F1 I2C
+ */
+
+#ifndef _LIBMAPLE_STM32F1_I2C_H_
+#define _LIBMAPLE_STM32F1_I2C_H_
+
+/*
+ * Register maps
+ */
+
+struct i2c_reg_map;
+
+/** STM32F1 I2C1 register map base pointer */
+#define I2C1_BASE ((struct i2c_reg_map*)0x40005400)
+/** STM32F1 I2C2 register map base pointer */
+#define I2C2_BASE ((struct i2c_reg_map*)0x40005800)
+
+/*
+ * Devices
+ */
+
+struct i2c_dev;
+
+extern struct i2c_dev* const I2C1;
+extern struct i2c_dev* const I2C2;
+
+#endif /* _LIBMAPLE_STM32F1_I2C_H_ */