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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2009-11-07 10:48:59 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2009-11-07 10:48:59 +0000 |
| commit | 2487bc05e4cb0a386f2c4633b97a5879c170eea1 (patch) | |
| tree | b8368a41e52907c42e940f47278f059abfaef70f /os/io/platforms/STM32/adc_lld.c | |
| parent | 8957c5264880bc0c8db34b591ceeca6752db57c8 (diff) | |
| download | ChibiOS-2487bc05e4cb0a386f2c4633b97a5879c170eea1.tar.gz ChibiOS-2487bc05e4cb0a386f2c4633b97a5879c170eea1.tar.bz2 ChibiOS-2487bc05e4cb0a386f2c4633b97a5879c170eea1.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1273 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/io/platforms/STM32/adc_lld.c')
| -rw-r--r-- | os/io/platforms/STM32/adc_lld.c | 119 |
1 files changed, 119 insertions, 0 deletions
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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