From 2487bc05e4cb0a386f2c4633b97a5879c170eea1 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Sat, 7 Nov 2009 10:48:59 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1273
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/io/platforms/STM32/adc_lld.c | 119 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 os/io/platforms/STM32/adc_lld.c

(limited to 'os/io/platforms/STM32/adc_lld.c')

diff --git a/os/io/platforms/STM32/adc_lld.c b/os/io/platforms/STM32/adc_lld.c
new file mode 100644
index 000000000..9581574ec
--- /dev/null
+++ b/os/io/platforms/STM32/adc_lld.c
@@ -0,0 +1,119 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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/RT 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 STM32/adc_lld.c
+ * @brief STM32 ADC subsystem low level driver source
+ * @addtogroup STM32_ADC
+ * @{
+ */
+
+#include <ch.h>
+#include <adc.h>
+
+/*===========================================================================*/
+/* Low Level Driver local functions.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Low Level Driver interrupt handlers.                                      */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Low Level Driver exported functions.                                      */
+/*===========================================================================*/
+
+/**
+ * @brief Low level ADC driver initialization.
+ */
+void adc_lld_init(void) {
+
+}
+
+/**
+ * @brief Configures and activates the ADC peripheral.
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ */
+void adc_lld_start(ADCDriver *adcp) {
+
+  if (adcp->adc_state == ADC_STOP) {
+    /* Clock activation.*/
+  }
+  /* Configuration.*/
+}
+
+/**
+ * @brief Deactivates the ADC peripheral.
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ */
+void adc_lld_stop(ADCDriver *adcp) {
+
+}
+
+/**
+ * @brief Starts an ADC conversion.
+ * @details Starts a conversion operation, there are two kind of conversion
+ *          modes:
+ *          - <b>LINEAR</b>, this mode is activated when the @p callback
+ *            parameter is set to @p NULL, in this mode the buffer is filled
+ *            once and then the conversion stops automatically.
+ *          - <b>CIRCULAR</b>, when a callback function is defined the
+ *            conversion never stops and the buffer is filled circularly.
+ *            During the conversion the callback function is invoked when
+ *            the buffer is 50% filled and when the buffer is 100% filled,
+ *            this way is possible to process the conversion stream in real
+ *            time. This kind of conversion can only be stopped by explicitly
+ *            invoking @p adcStopConversion().
+ *          .
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ * @param[in] grpp      pointer to a @p ADCConversionGroup object
+ * @param[out] samples  pointer to the samples buffer
+ * @param[in] depth     buffer depth (matrix rows number). The buffer depth
+ *                      must be one or an even number.
+ * @param[in] callback  pointer to the conversion callback function
+ * @return The operation status.
+ * @retval FALSE        the conversion has been started.
+ * @retval TRUE         the driver is busy, conversion not started.
+ *
+ * @note The buffer is organized as a matrix of M*N elements where M is the
+ *       channels number configured into the conversion group and N is the
+ *       buffer depth. The samples are sequentially written into the buffer
+ *       with no gaps.
+ */
+void adc_lld_start_conversion(ADCDriver *adcp,
+                              ADCConversionGroup *grpp,
+                              void *samples,
+                              size_t depth,
+                              adccallback_t callback) {
+
+}
+
+/**
+ * @brief Stops an ongoing conversion.
+ *
+ * @param[in] adcp      pointer to the @p ADCDriver object
+ */
+void adc_lld_stop_conversion(ADCDriver *adcp) {
+
+}
+
+/** @} */
-- 
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