Merged from external project:

	**********
	r22408 | batt | 2008-10-02 12:09:50 +0200 (Thu, 02 Oct 2008) | 1 line

	Add low level macros for bitbang i2c.
	**********

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@1873 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/bertos/drv/i2c_bitbang.c b/bertos/drv/i2c_bitbang.c
index 7067d91917a967e2178ee4348857499374dea966..ef7c95851975b7823949392b5059ea0c214e808a 100644 (file)
--- a/bertos/drv/i2c_bitbang.c
+++ b/bertos/drv/i2c_bitbang.c
@@ -144,3 +144,16 @@ int i2c_get(bool ack)
        return (int)(uint8_t)data;
 }
 
        return (int)(uint8_t)data;
 }
 

+MOD_DEFINE(i2c);
+
+/**
+ * Initialize i2c module.
+ */
+void i2c_init(void)
+{
+       I2C_BITBANG_HW_INIT;
+       SDA_HI;
+       SCL_HI;
+       MOD_INIT(i2c);
+}
+

diff --git a/bertos/hw/hw_i2c_bitbang.h b/bertos/hw/hw_i2c_bitbang.h
new file mode 100644 (file)
index 0000000..e6f0b18
--- /dev/null
+++ b/bertos/hw/hw_i2c_bitbang.h
@@ -0,0 +1,61 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2003, 2004, 2006, 2008 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 2000 Bernie Innocenti <bernie@codewiz.org>
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Macro for I2C bitbang operation.
+ *
+ *
+ * \version $Id$
+ *
+ * \author Francesco Sacchi <batt@develer.com>
+ */
+
+#ifndef HW_I2C_BITBANG_H
+#define HW_I2C_BITBANG_H
+
+#warning TODO:This is an example implementation, you must implement it!
+
+#define SDA_HI  /* Implement me:Set SDA High by setting SDA pin as input */
+#define SDA_LO  /* Implement me:Set SDA Low by setting SDA pin as open collector output */
+#define SCL_HI  /* Implement me:Set SCL High by setting SCL pin as input */
+#define SCL_LO  /* Implement me:Set SCL Low by setting SCL pin as open collector output */
+
+
+#define SCL_IN       (true) /* Implement me: read SDA pin state */
+#define SDA_IN       (true) /* Implement me: read SCL pin state */
+
+/**
+ * This macro should set SDA and SCL lines as input.
+ */
+#define I2C_BITBANG_HW_INIT /* Implement me! */
+
+#endif /* HW_I2C_BITBANG_H */