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authorGiovanni Di Sirio <gdisirio@gmail.com>2016-03-23 12:36:05 +0000
committerGiovanni Di Sirio <gdisirio@gmail.com>2016-03-23 12:36:05 +0000
commit4edc5aeca7251e69dfa772dfdd5b2e012375a809 (patch)
treea9f08ea6ff30038585aee638fc08cb5f01d948da /os/hal/src/hal_ext.c
parentf8c7e7e99cc005392dd099be9c3670e8386bd518 (diff)
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Mass renaming of HAL files.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@9151 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/src/hal_ext.c')
-rw-r--r--os/hal/src/hal_ext.c202
1 files changed, 202 insertions, 0 deletions
diff --git a/os/hal/src/hal_ext.c b/os/hal/src/hal_ext.c
new file mode 100644
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+++ b/os/hal/src/hal_ext.c
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+/*
+ ChibiOS - Copyright (C) 2006..2016 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.
+*/
+
+/**
+ * @file ext.c
+ * @brief EXT Driver code.
+ *
+ * @addtogroup EXT
+ * @{
+ */
+
+#include "hal.h"
+
+#if (HAL_USE_EXT == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief EXT Driver initialization.
+ * @note This function is implicitly invoked by @p halInit(), there is
+ * no need to explicitly initialize the driver.
+ *
+ * @init
+ */
+void extInit(void) {
+
+ ext_lld_init();
+}
+
+/**
+ * @brief Initializes the standard part of a @p EXTDriver structure.
+ *
+ * @param[out] extp pointer to the @p EXTDriver object
+ *
+ * @init
+ */
+void extObjectInit(EXTDriver *extp) {
+
+ extp->state = EXT_STOP;
+ extp->config = NULL;
+}
+
+/**
+ * @brief Configures and activates the EXT peripheral.
+ * @post After activation all EXT channels are in the disabled state,
+ * use @p extChannelEnable() in order to activate them.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ * @param[in] config pointer to the @p EXTConfig object
+ *
+ * @api
+ */
+void extStart(EXTDriver *extp, const EXTConfig *config) {
+
+ osalDbgCheck((extp != NULL) && (config != NULL));
+
+ osalSysLock();
+ osalDbgAssert((extp->state == EXT_STOP) || (extp->state == EXT_ACTIVE),
+ "invalid state");
+ extp->config = config;
+ ext_lld_start(extp);
+ extp->state = EXT_ACTIVE;
+ osalSysUnlock();
+}
+
+/**
+ * @brief Deactivates the EXT peripheral.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ *
+ * @api
+ */
+void extStop(EXTDriver *extp) {
+
+ osalDbgCheck(extp != NULL);
+
+ osalSysLock();
+ osalDbgAssert((extp->state == EXT_STOP) || (extp->state == EXT_ACTIVE),
+ "invalid state");
+ ext_lld_stop(extp);
+ extp->state = EXT_STOP;
+ osalSysUnlock();
+}
+
+/**
+ * @brief Enables an EXT channel.
+ * @pre The channel must not be in @p EXT_CH_MODE_DISABLED mode.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ * @param[in] channel channel to be enabled
+ *
+ * @api
+ */
+void extChannelEnable(EXTDriver *extp, expchannel_t channel) {
+
+ osalDbgCheck((extp != NULL) && (channel < (expchannel_t)EXT_MAX_CHANNELS));
+
+ osalSysLock();
+ osalDbgAssert((extp->state == EXT_ACTIVE) &&
+ ((extp->config->channels[channel].mode &
+ EXT_CH_MODE_EDGES_MASK) != EXT_CH_MODE_DISABLED),
+ "invalid state");
+ extChannelEnableI(extp, channel);
+ osalSysUnlock();
+}
+
+/**
+ * @brief Disables an EXT channel.
+ * @pre The channel must not be in @p EXT_CH_MODE_DISABLED mode.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ * @param[in] channel channel to be disabled
+ *
+ * @api
+ */
+void extChannelDisable(EXTDriver *extp, expchannel_t channel) {
+
+ osalDbgCheck((extp != NULL) && (channel < (expchannel_t)EXT_MAX_CHANNELS));
+
+ osalSysLock();
+ osalDbgAssert((extp->state == EXT_ACTIVE) &&
+ ((extp->config->channels[channel].mode &
+ EXT_CH_MODE_EDGES_MASK) != EXT_CH_MODE_DISABLED),
+ "invalid state");
+ extChannelDisableI(extp, channel);
+ osalSysUnlock();
+}
+
+/**
+ * @brief Changes the operation mode of a channel.
+ * @note This function attempts to write over the current configuration
+ * structure that must have been not declared constant. This
+ * violates the @p const qualifier in @p extStart() but it is
+ * intentional.
+ * @note This function cannot be used if the configuration structure is
+ * declared @p const.
+ * @note The effect of this function on constant configuration structures
+ * is not defined.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ * @param[in] channel channel to be changed
+ * @param[in] extcp new configuration for the channel
+ *
+ * @iclass
+ */
+void extSetChannelModeI(EXTDriver *extp,
+ expchannel_t channel,
+ const EXTChannelConfig *extcp) {
+ EXTChannelConfig *oldcp;
+
+ osalDbgCheck((extp != NULL) &&
+ (channel < (expchannel_t)EXT_MAX_CHANNELS) &&
+ (extcp != NULL));
+
+ osalDbgAssert(extp->state == EXT_ACTIVE, "invalid state");
+
+ /* Note that here the access is enforced as non-const, known access
+ violation.*/
+ /*lint -save -e9005 [11.8] Known issue, the driver needs rework here.*/
+ oldcp = (EXTChannelConfig *)&extp->config->channels[channel];
+ /*lint -restore*/
+
+ /* Overwriting the old channels configuration then the channel is
+ reconfigured by the low level driver.*/
+ *oldcp = *extcp;
+ ext_lld_channel_enable(extp, channel);
+}
+
+#endif /* HAL_USE_EXT == TRUE */
+
+/** @} */