From 5bf1dca59b570a3ffead03860301abc5e14e41e0 Mon Sep 17 00:00:00 2001
From: asterix <asterix@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Wed, 23 Mar 2011 15:07:32 +0000
Subject: [PATCH] First implementation of dac module.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@4801 38d2e660-2303-0410-9eaa-f027e97ec537
---
 bertos/cfg/cfg_dac.h                          | 58 ++++++++++++++
 bertos/cpu/cortex-m3/drv/dac_sam3.c           | 75 +++++++++++++++++++
 bertos/drv/dac.h                              | 70 +++++++++++++++++
 .../examples/sam3x-ek_display/cfg/cfg_dac.h   | 58 ++++++++++++++
 4 files changed, 261 insertions(+)
 create mode 100644 bertos/cfg/cfg_dac.h
 create mode 100644 bertos/cpu/cortex-m3/drv/dac_sam3.c
 create mode 100644 bertos/drv/dac.h
 create mode 100644 boards/sam3x-ek/examples/sam3x-ek_display/cfg/cfg_dac.h

diff --git a/bertos/cfg/cfg_dac.h b/bertos/cfg/cfg_dac.h
new file mode 100644
index 00000000..8eff7bc3
--- /dev/null
+++ b/bertos/cfg/cfg_dac.h
@@ -0,0 +1,58 @@
+/**
+ * \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 2011 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Configuration file for DAC module.
+ *
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#ifndef CFG_DAC_H
+#define CFG_DAC_H
+
+/**
+ * Module logging level.
+ *
+ * $WIZ$ type = "enum"
+ * $WIZ$ value_list = "log_level"
+ */
+#define DAC_LOG_LEVEL      LOG_LVL_WARN
+
+/**
+ * Module logging format.
+ *
+ * $WIZ$ type = "enum"
+ * $WIZ$ value_list = "log_format"
+ */
+#define DAC_LOG_FORMAT     LOG_FMT_TERSE
+
+#endif /* CFG_DAC_H */
diff --git a/bertos/cpu/cortex-m3/drv/dac_sam3.c b/bertos/cpu/cortex-m3/drv/dac_sam3.c
new file mode 100644
index 00000000..e4e7e9a9
--- /dev/null
+++ b/bertos/cpu/cortex-m3/drv/dac_sam3.c
@@ -0,0 +1,75 @@
+/**
+ * \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 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief DAC hardware-specific implementation
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+
+#include "cfg/cfg_dac.h"
+
+#include <cfg/macros.h>
+#include <cfg/compiler.h>
+
+// Define log settings for cfg/log.h.
+#define LOG_LEVEL         DAC_LOG_LEVEL
+#define LOG_FORMAT        DAC_LOG_FORMAT
+#include <cfg/log.h>
+
+#include <drv/dac.h>
+#include <io/cm3.h>
+
+int dac_write(int ch, buf, len)
+{
+	return 0;
+}
+
+void dac_init(void)
+{
+	/* Clock ADC peripheral */
+	pmc_periphEnable(DACC_ID);
+
+	DACC_CR |= BV(DACC_SWRST);
+	DACC_MR = 0;
+
+	/* Refresh period */
+	DACC_MR |= (16 << DACC_REFRESH_SHIFT) & DACC_REFRESH_MASK;
+	/* Select channel */
+	DACC_MR |= (DACC_CH1 << DACC_USER_SEL_SHIFT) & DACC_USER_SEL_MASK;
+	/* Start up */
+	DACC_MR |= (DACC_MR_STARTUP_0 << DACC_STARTUP_SHIFT) & DACC_STARTUP_MASK;
+
+	kprintf("mr: %08lx\n", DACC_MR);
+	/* Register and enable irq for adc. */
+	sysirq_setHandler(INT_DACC, dac);
+}
diff --git a/bertos/drv/dac.h b/bertos/drv/dac.h
new file mode 100644
index 00000000..e745ec11
--- /dev/null
+++ b/bertos/drv/dac.h
@@ -0,0 +1,70 @@
+/**
+ * \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 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \defgroup dac Generic DAC driver
+ * \ingroup drivers
+ * \{
+ * \brief Digital to Analog Converter driver (DAC).
+ *
+ * <b>Configuration file</b>: cfg_dac.h
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ *
+ * $WIZ$ module_name = "dac"
+ * $WIZ$ module_configuration = "bertos/cfg/cfg_dac.h"
+ * $WIZ$ module_supports = "sam3x"
+ */
+
+
+#ifndef DRV_DAC_H
+#define DRV_DAC_H
+
+#include <cfg/compiler.h>
+#include <cfg/debug.h>
+#include <cpu/attr.h>
+
+int dac_write(int ch, void *buf, size_t len);
+
+INLINE int dac_putHalfWord(int ch, uint16_t sample)
+{
+	return dac_write(ch, &sample, sizeof(uint16_t));
+}
+
+INLINE int dac_putWord(int ch, uint32_t sample)
+{
+	return dac_write(ch, &sample, sizeof(uint32_t));
+}
+
+void dac_init(void);
+
+/** \} */ //defgroup dac
+#endif /* DRV_DAC_H */
diff --git a/boards/sam3x-ek/examples/sam3x-ek_display/cfg/cfg_dac.h b/boards/sam3x-ek/examples/sam3x-ek_display/cfg/cfg_dac.h
new file mode 100644
index 00000000..8eff7bc3
--- /dev/null
+++ b/boards/sam3x-ek/examples/sam3x-ek_display/cfg/cfg_dac.h
@@ -0,0 +1,58 @@
+/**
+ * \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 2011 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Configuration file for DAC module.
+ *
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#ifndef CFG_DAC_H
+#define CFG_DAC_H
+
+/**
+ * Module logging level.
+ *
+ * $WIZ$ type = "enum"
+ * $WIZ$ value_list = "log_level"
+ */
+#define DAC_LOG_LEVEL      LOG_LVL_WARN
+
+/**
+ * Module logging format.
+ *
+ * $WIZ$ type = "enum"
+ * $WIZ$ value_list = "log_format"
+ */
+#define DAC_LOG_FORMAT     LOG_FMT_TERSE
+
+#endif /* CFG_DAC_H */
-- 
2.25.1