git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1273 35acf78f-673a-0410-8e92-d51de3d6d3f4

3 files changed, 239 insertions, 7 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) {

+

+}

+

+/** @} */

diff --git a/os/io/platforms/STM32/adc_lld.h b/os/io/platforms/STM32/adc_lld.h
new file mode 100644
index 000000000..2dbfd82dd
--- /dev/null
+++ b/os/io/platforms/STM32/adc_lld.h
@@ -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.h

+ * @brief STM32 ADC subsystem low level driver header

+ * @addtogroup STM32_ADC

+ * @{

+ */

+

+#ifndef _ADC_LLD_H_

+#define _ADC_LLD_H_

+

+/*===========================================================================*/

+/* Driver pre-compile time settings.                                         */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver constants.                                                         */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver data structures and types.                                         */

+/*===========================================================================*/

+

+/**

+ * @brief ADC sample data type.
+ */

+typedef uint16_t adcsample_t;

+

+/**

+ * @brief Channels number in a conversion group.

+ */

+typedef uint16_t adc_channels_num_t;

+

+/**

+ * @brief ADC notification callback type.

+ * @param[in] buffer pointer to the most recent samples data

+ * @param[in] n number of buffer rows available starting from @p buffer
+ */

+typedef void (*adccallback_t)(adcsample_t *buffer, size_t n);

+

+/**

+ * @brief Conversion group configuration structure.

+ * @details This implementation-dependent structure describes a conversion

+ *          operation.
+ */

+typedef struct {

+  /**

+   * @brief Number of the analog channels belonging to the conversion group.
+   */

+  adc_channels_num_t    acg_num_channels;

+} ADCConversionGroup;

+

+/**

+ * @brief Driver configuration structure.

+ */

+typedef struct {

+

+} ADCConfig;

+

+/**

+ * @brief Structure representing an ADC driver.

+ */

+typedef struct {

+  /**

+   * @brief Driver state.

+   */

+  adcstate_t            adc_state;

+  /**

+   * @brief Current configuration data.

+   */

+  const ADCConfig       *adc_config;

+  /**

+   * @brief Semaphore for completion synchronization.
+   */

+  Semaphore             adc_sem;

+  /* End of the mandatory fields.*/

+} ADCDriver;

+

+/*===========================================================================*/

+/* External declarations.                                                    */

+/*===========================================================================*/

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+  void adc_lld_init(void);

+  void adc_lld_start(ADCDriver *adcp);

+  void adc_lld_stop(ADCDriver *adcp);

+  void adc_lld_start_conversion(ADCDriver *adcp,

+                                ADCConversionGroup *grpp,

+                                void *samples,

+                                size_t depth,

+                                adccallback_t callback);

+  void adc_lld_stop_conversion(ADCDriver *adcp);

+#ifdef __cplusplus

+}

+#endif

+

+#endif /* _ADC_LLD_H_ */

+

+/** @} */

diff --git a/os/io/templates/adc_lld.h b/os/io/templates/adc_lld.h
index db67a65cd..8ae29a521 100644
--- a/os/io/templates/adc_lld.h
+++ b/os/io/templates/adc_lld.h
@@ -50,17 +50,11 @@ typedef uint16_t adcsample_t;
 typedef uint16_t adc_channels_num_t;

 

 /**

- * @brief Samples buffer depth.

- */

-typedef uint16_t adc_buffer_depth_t;

-

-/**

  * @brief ADC notification callback type.

  * @param[in] buffer pointer to the most recent samples data

  * @param[in] n number of buffer rows available starting from @p buffer
  */

-typedef void (*adccallback_t)(adcsample_t *buffer,

-                              adc_buffer_depth_t n);

+typedef void (*adccallback_t)(adcsample_t *buffer, size_t n);

 

 /**

  * @brief Conversion group configuration structure.