ChibiOS 2.6.8, until I can figure out where to get it from git.

2026-09-15 02:52:58 +00:00 · 2015-07-08 08:40:23 -07:00
parent dc6fee8370
commit e1eea8e08a
1929 changed files with 575326 additions and 0 deletions
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+/*
+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+/*
+   Concepts and parts of this file have been contributed by Fabio Utzig and
+   Xo Wang.
+ */
+
+/**
+ * @file    templates/icu_lld.h
+ * @brief   ICU Driver subsystem low level driver header template.
+ *
+ * @addtogroup ICU
+ * @{
+ */
+
+#ifndef _ICU_LLD_H_
+#define _ICU_LLD_H_
+
+#if HAL_USE_ICU || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/**
+ * @name    Configuration options
+ * @{
+ */
+/**
+ * @brief   ICU driver enable switch.
+ * @details If set to @p TRUE the support for ICU1 is included.
+ */
+#if !defined(PLATFORM_ICU_USE_ICU1) || defined(__DOXYGEN__)
+#define PLATFORM_ICU_USE_ICU1               FALSE
+#endif
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief ICU driver mode.
+ */
+typedef enum {
+  ICU_INPUT_ACTIVE_HIGH = 0,        /**< Trigger on rising edge.            */
+  ICU_INPUT_ACTIVE_LOW = 1,         /**< Trigger on falling edge.           */
+} icumode_t;
+
+/**
+ * @brief   ICU frequency type.
+ */
+typedef uint32_t icufreq_t;
+
+/**
+ * @brief   ICU counter type.
+ */
+typedef uint16_t icucnt_t;
+
+/**
+ * @brief   Driver configuration structure.
+ * @note    It could be empty on some architectures.
+ */
+typedef struct {
+  /**
+   * @brief   Driver mode.
+   */
+  icumode_t                 mode;
+  /**
+   * @brief   Timer clock in Hz.
+   * @note    The low level can use assertions in order to catch invalid
+   *          frequency specifications.
+   */
+  icufreq_t                 frequency;
+  /**
+   * @brief   Callback for pulse width measurement.
+   */
+  icucallback_t             width_cb;
+  /**
+   * @brief   Callback for cycle period measurement.
+   */
+  icucallback_t             period_cb;
+  /**
+   * @brief   Callback for timer overflow.
+   */
+  icucallback_t             overflow_cb;
+  /* End of the mandatory fields.*/
+} ICUConfig;
+
+/**
+ * @brief   Structure representing an ICU driver.
+ */
+struct ICUDriver {
+  /**
+   * @brief Driver state.
+   */
+  icustate_t                state;
+  /**
+   * @brief Current configuration data.
+   */
+  const ICUConfig           *config;
+#if defined(ICU_DRIVER_EXT_FIELDS)
+  ICU_DRIVER_EXT_FIELDS
+#endif
+  /* End of the mandatory fields.*/
+};
+
+/*===========================================================================*/
+/* Driver macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#if PLATFORM_ICU_USE_ICU1 && !defined(__DOXYGEN__)
+extern ICUDriver ICUD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void icu_lld_init(void);
+  void icu_lld_start(ICUDriver *icup);
+  void icu_lld_stop(ICUDriver *icup);
+  void icu_lld_enable(ICUDriver *icup);
+  void icu_lld_disable(ICUDriver *icup);
+  icucnt_t icu_lld_get_width(ICUDriver *icup);
+  icucnt_t icu_lld_get_period(ICUDriver *icup);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_ICU */
+
+#endif /* _ICU_LLD_H_ */
+
+/** @} */