From 4e7a5796b40e2d8d2779f31e4103c6934c537858 Mon Sep 17 00:00:00 2001
From: barthess <barthess@yandex.ru>
Date: Sat, 28 Feb 2015 21:42:40 +0300
Subject: Added EICU driver in HAL. Added STM32 backend for EICU.

---
 os/hal/src/eicu.c | 149 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 os/hal/src/eicu.c

(limited to 'os/hal/src/eicu.c')

diff --git a/os/hal/src/eicu.c b/os/hal/src/eicu.c
new file mode 100644
index 0000000..ef31745
--- /dev/null
+++ b/os/hal/src/eicu.c
@@ -0,0 +1,149 @@
+/*
+    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 */
-- 
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