From ff676aee33d4061e9d8186a15ad72c78fa1466a0 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Mon, 28 Mar 2011 15:32:56 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2848
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/hal/src/icu.c | 151 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 151 insertions(+)
 create mode 100644 os/hal/src/icu.c

(limited to 'os/hal/src')

diff --git a/os/hal/src/icu.c b/os/hal/src/icu.c
new file mode 100644
index 000000000..3be67448e
--- /dev/null
+++ b/os/hal/src/icu.c
@@ -0,0 +1,151 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+                 2011 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    icu.c
+ * @brief   ICU Driver code.
+ *
+ * @addtogroup ICU
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_ICU || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   ICU Driver initialization.
+ * @note    This function is implicitly invoked by @p halInit(), there is
+ *          no need to explicitly initialize the driver.
+ *
+ * @init
+ */
+void icuInit(void) {
+
+  icu_lld_init();
+}
+
+/**
+ * @brief   Initializes the standard part of a @p ICUDriver structure.
+ *
+ * @param[out] icup     pointer to the @p ICUDriver object
+ *
+ * @init
+ */
+void icuObjectInit(ICUDriver *icup) {
+
+  icup->state  = ICU_STOP;
+  icup->config = NULL;
+}
+
+/**
+ * @brief   Configures and activates the ICU peripheral.
+ *
+ * @param[in] icup      pointer to the @p ICUDriver object
+ * @param[in] config    pointer to the @p ICUConfig object
+ *
+ * @api
+ */
+void icuStart(ICUDriver *icup, const ICUConfig *config) {
+
+  chDbgCheck((icup != NULL) && (config != NULL), "icuStart");
+
+  chSysLock();
+  chDbgAssert((icup->state == ICU_STOP) || (icup->state == ICU_READY),
+              "icuStart(), #1", "invalid state");
+  icup->config = config;
+  icu_lld_start(icup);
+  icup->state = ICU_READY;
+  chSysUnlock();
+}
+
+/**
+ * @brief   Deactivates the ICU peripheral.
+ *
+ * @param[in] icup      pointer to the @p ICUDriver object
+ *
+ * @api
+ */
+void icuStop(ICUDriver *icup) {
+
+  chDbgCheck(icup != NULL, "icuStop");
+
+  chSysLock();
+  chDbgAssert((icup->state == ICU_STOP) || (icup->state == ICU_READY),
+              "icuStop(), #1", "invalid state");
+  icu_lld_stop(icup);
+  icup->state = ICU_STOP;
+  chSysUnlock();
+}
+
+/**
+ * @brief   Enables the input capture.
+ *
+ * @param[in] icup      pointer to the @p ICUDriver object
+ *
+ * @api
+ */
+void icuEnable(ICUDriver *icup) {
+
+  chSysLock();
+  chDbgAssert(icup->state == ICU_READY, "icuEnable(), #1", "invalid state");
+  icu_lld_enable(icup);
+  icup->state = ICU_WAITING;
+  chSysUnlock();
+}
+
+/**
+ * @brief   Disables the input capture.
+ *
+ * @param[in] icup      pointer to the @p ICUDriver object
+ *
+ * @api
+ */
+void icuDisable(ICUDriver *icup) {
+
+  chSysLock();
+  chDbgAssert((icup->state == ICU_READY) || (icup->state == ICU_WAITING) ||
+              (icup->state == ICU_ACTIVE) || (icup->state == ICU_IDLE),
+              "icuDisable(), #1", "invalid state");
+  icu_lld_disable(icup);
+  icup->state = ICU_READY;
+  chSysUnlock();
+}
+
+#endif /* HAL_USE_ICU */
+
+/** @} */
-- 
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