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-rw-r--r--os/hal/src/eicu.c149
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diff --git a/os/hal/src/eicu.c b/os/hal/src/eicu.c
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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.
+*/
+/*
+ Rewritten by Emil Fresk (1/5 - 2014) for extended input capture
+ functionallity. And fix for spourious callbacks in the interrupt handler.
+*/
+
+/*
+ * Hardware Abstraction Layer for Extended Input Capture Unit
+ */
+#include "hal.h"
+
+#if HAL_USE_EICU || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief EICU Driver initialization.
+ *
+ * @init
+ */
+void eicuInit(void) {
+
+ eicu_lld_init();
+}
+
+/**
+ * @brief Initializes the standard part of a @p EICUDriver structure.
+ *
+ * @param[out] eicup Pointer to the @p EICUDriver object
+ *
+ * @init
+ */
+void eicuObjectInit(EICUDriver *eicup) {
+
+ eicup->state = EICU_STOP;
+ eicup->config = NULL;
+}
+
+/**
+ * @brief Configures and activates the EICU peripheral.
+ *
+ * @param[in] eicup Pointer to the @p EICUDriver object
+ * @param[in] config Pointer to the @p EICUConfig object
+ *
+ * @api
+ */
+void eicuStart(EICUDriver *eicup, const EICUConfig *config) {
+
+ osalDbgCheck((eicup != NULL) && (config != NULL));
+
+ osalSysLock();
+ osalDbgAssert((eicup->state == EICU_STOP) || (eicup->state == EICU_READY),
+ "invalid state");
+ eicup->config = config;
+ eicu_lld_start(eicup);
+ eicup->state = EICU_READY;
+ osalSysUnlock();
+}
+
+/**
+ * @brief Deactivates the EICU peripheral.
+ *
+ * @param[in] eicup Pointer to the @p EICUDriver object
+ *
+ * @api
+ */
+void eicuStop(EICUDriver *eicup) {
+
+ osalDbgCheck(eicup != NULL);
+
+ osalSysLock();
+ osalDbgAssert((eicup->state == EICU_STOP) || (eicup->state == EICU_READY),
+ "invalid state");
+ eicu_lld_stop(eicup);
+ eicup->state = EICU_STOP;
+ osalSysUnlock();
+}
+
+/**
+ * @brief Enables the extended input capture.
+ *
+ * @param[in] eicup Pointer to the @p EICUDriver object
+ *
+ * @api
+ */
+void eicuEnable(EICUDriver *eicup) {
+
+ osalDbgCheck(eicup != NULL);
+
+ osalSysLock();
+ osalDbgAssert(eicup->state == EICU_READY, "invalid state");
+ eicu_lld_enable(eicup);
+ eicup->state = EICU_WAITING;
+ osalSysUnlock();
+}
+
+/**
+ * @brief Disables the extended input capture.
+ *
+ * @param[in] eicup Pointer to the @p EICUDriver object
+ *
+ * @api
+ */
+void eicuDisable(EICUDriver *eicup) {
+
+ osalDbgCheck(eicup != NULL);
+
+ osalSysLock();
+ osalDbgAssert((eicup->state == EICU_READY) || (eicup->state == EICU_WAITING) ||
+ (eicup->state == EICU_ACTIVE) || (eicup->state == EICU_IDLE),
+ "invalid state");
+ eicu_lld_disable(eicup);
+ eicup->state = EICU_READY;
+ osalSysUnlock();
+}
+
+#endif /* HAL_USE_EICU */