GAUDIN implemented with GADC driver

4 files changed, 220 insertions, 0 deletions

diff --git a/drivers/gaudin/gadc/gaudin_lld.c b/drivers/gaudin/gadc/gaudin_lld.c
new file mode 100644
index 00000000..12e6aced
--- /dev/null
+++ b/drivers/gaudin/gadc/gaudin_lld.c
@@ -0,0 +1,76 @@
+/*
+    ChibiOS/GFX - Copyright (C) 2012, 2013
+                 Joel Bodenmann aka Tectu <joel@unormal.org>
+
+    This file is part of ChibiOS/GFX.
+
+    ChibiOS/GFX 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 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/GFX 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, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @file    drivers/gaudin/gadc/gaudin.c
+ * @brief   GAUDIN - Driver file for using the cpu ADC (via GADC).
+ *
+ * @addtogroup GAUDIN
+ *
+ * @{
+ */
+#include "ch.h"
+#include "hal.h"
+
+/**
+ * We are now implementing the driver - pull in our channel table
+ * from the board definitions.
+ */
+#define GAUDIN_LLD_IMPLEMENTATION
+
+
+#include "gfx.h"
+
+#if GFX_USE_GAUDIN
+
+/* Double check the GADC system is turned on */
+#if !GFX_USE_GADC
+	#error "GAUDIN - The GADC driver for GAUDIN requires GFX_USE_GADC to be TRUE"
+#endif
+
+/* Include the driver defines */
+#include "gaudin/lld/gaudin_lld.h"
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+void gaudin_lld_init(const gaudin_params *paud) {
+	/* Setup the high speed GADC */
+	gadcHighSpeedInit(gaudin_lld_physdevs[paud->channel], paud->frequency, paud->buffer, paud->bufcount, paud->samplesPerEvent);
+
+	/* Register ourselves for ISR callbacks */
+	gadcHighSpeedSetISRCallback(GAUDIN_ISR_CompleteI);
+
+	/**
+	 * The gadc driver handles any errors for us by restarting the transaction so there is
+	 * no need for us to setup anything for GAUDIN_ISR_ErrorI()
+	 */
+}
+
+void gadc_lld_start(void) {
+	gadcHighSpeedStart();
+}
+
+void gadc_lld_stop(void) {
+	gadcHighSpeedStop();
+}
+
+#endif /* GFX_USE_GAUDIN */
+/** @} */
diff --git a/drivers/gaudin/gadc/gaudin_lld.mk b/drivers/gaudin/gadc/gaudin_lld.mk
new file mode 100644
index 00000000..c969e80b
--- /dev/null
+++ b/drivers/gaudin/gadc/gaudin_lld.mk
@@ -0,0 +1,5 @@
+# List the required driver.
+GFXSRC += $(GFXLIB)/drivers/gaudin/gadc/gaudin_lld.c
+
+# Required include directories
+GFXINC += $(GFXLIB)/drivers/gaudin/gadc
diff --git a/drivers/gaudin/gadc/gaudin_lld_board_olimexsam7ex256.h b/drivers/gaudin/gadc/gaudin_lld_board_olimexsam7ex256.h
new file mode 100644
index 00000000..283a2914
--- /dev/null
+++ b/drivers/gaudin/gadc/gaudin_lld_board_olimexsam7ex256.h
@@ -0,0 +1,60 @@
+/*
+    ChibiOS/GFX - Copyright (C) 2012, 2013
+                 Joel Bodenmann aka Tectu <joel@unormal.org>
+
+    This file is part of ChibiOS/GFX.
+
+    ChibiOS/GFX 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 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/GFX 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, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file    drivers/gaudin/gadc/gaudin_lld_board_olimexsam7ex256.h
+ * @brief   GAUDIN Driver board config file for the Olimex SAM7EX256 board
+ *
+ * @addtogroup GAUDIN
+ * @{
+ */
+
+#ifndef _GAUDIN_LLD_BOARD_OLIMEXSAM7EX256_H
+#define _GAUDIN_LLD_BOARD_OLIMEXSAM7EX256_H
+
+/*===========================================================================*/
+/* Audio inputs on this board                                                */
+/*===========================================================================*/
+
+/**
+ * @brief	The number of audio channels supported by this driver
+ */
+#define GAUDIN_NUM_CHANNELS					1
+
+/**
+ * @brief	The list of audio channels and their uses
+ * @{
+ */
+#define	GAUDIN_MICROPHONE					0
+/** @} */
+
+/**
+ * @brief	The following defines are for the low level driver use only
+ * @{
+ */
+#ifdef GAUDIN_LLD_IMPLEMENTATION
+	static uint32_t gaudin_lld_physdevs[GAUDIN_NUM_CHANNELS] = {
+			GADC_PHYSDEV_MICROPHONE,
+			};
+#endif
+/** @} */
+
+#endif	/* _GAUDIN_LLD_BOARD_OLIMEXSAM7EX256_H */
+/** @} */
diff --git a/drivers/gaudin/gadc/gaudin_lld_config.h b/drivers/gaudin/gadc/gaudin_lld_config.h
new file mode 100644
index 00000000..402e4180
--- /dev/null
+++ b/drivers/gaudin/gadc/gaudin_lld_config.h
@@ -0,0 +1,79 @@
+/*
+    ChibiOS/GFX - Copyright (C) 2012, 2013
+                 Joel Bodenmann aka Tectu <joel@unormal.org>
+
+    This file is part of ChibiOS/GFX.
+
+    ChibiOS/GFX 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 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/GFX 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, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file    drivers/gaudin/gadc/gaudin_lld_config.h
+ * @brief   GAUDIN Driver config file.
+ *
+ * @addtogroup GAUDIN
+ * @{
+ */
+
+#ifndef GAUDIN_LLD_CONFIG_H
+#define GAUDIN_LLD_CONFIG_H
+
+#if GFX_USE_GAUDIN
+
+/*===========================================================================*/
+/* Driver hardware support.                                                  */
+/*===========================================================================*/
+
+/**
+ * @brief	The audio input sample type
+ * @details	For this driver it matches the cpu sample type
+ */
+typedef adcsample_t		audin_sample_t;
+
+/**
+ * @brief	The maximum sample frequency supported by this audio device
+ * @details	For this driver it matches the GADC maximum high speed sample rate
+ */
+#define GAUDIN_MAX_SAMPLE_FREQUENCY			GADC_MAX_HIGH_SPEED_SAMPLERATE
+
+/**
+ * @brief	The number of bits in a sample
+ * @details	For this driver it matches the cpu sample bits
+ */
+#define GAUDIN_BITS_PER_SAMPLE				GADC_BITS_PER_SAMPLE
+
+/**
+ * @brief	The format of an audio sample
+ * @details	For this driver it matches the cpu sample format
+ */
+#define GAUDIN_SAMPLE_FORMAT				GADC_SAMPLE_FORMAT
+
+/**
+ * For the GAUDIN driver that uses GADC - all the remaining config definitions are specific
+ * to the board.
+ */
+#if defined(GADC_USE_CUSTOM_BOARD) && GADC_USE_CUSTOM_BOARD
+	/* Include the user supplied board definitions */
+	#include "gaudin_lld_board.h"
+#elif defined(BOARD_OLIMEX_SAM7_EX256)
+	#include "gaudin_lld_board_olimexsam7ex256.h"
+#else
+	/* Include the user supplied board definitions */
+	#include "gaudin_lld_board.h"
+#endif
+
+#endif	/* GFX_USE_GAUDIN */
+
+#endif	/* GAUDIN_LLD_CONFIG_H */
+/** @} */