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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-09-02 09:48:38 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-09-02 09:48:38 +0000 |
| commit | 74b860fee65ca8feb2a796144976ff6c44e64bcc (patch) | |
| tree | 3ef638c9e13287040805ebcef40f84b57436c5d3 /os/hal/ports/common/ARMCMx | |
| parent | 2b7a306c13738545059f7b67d5ee8b92ec399687 (diff) | |
| download | ChibiOS-74b860fee65ca8feb2a796144976ff6c44e64bcc.tar.gz ChibiOS-74b860fee65ca8feb2a796144976ff6c44e64bcc.tar.bz2 ChibiOS-74b860fee65ca8feb2a796144976ff6c44e64bcc.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6242 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/ports/common/ARMCMx')
| -rw-r--r-- | os/hal/ports/common/ARMCMx/nvic.c | 89 | ||||
| -rw-r--r-- | os/hal/ports/common/ARMCMx/nvic.h | 69 |
2 files changed, 158 insertions, 0 deletions
diff --git a/os/hal/ports/common/ARMCMx/nvic.c b/os/hal/ports/common/ARMCMx/nvic.c new file mode 100644 index 000000000..c45366396 --- /dev/null +++ b/os/hal/ports/common/ARMCMx/nvic.c @@ -0,0 +1,89 @@ +/*
+ 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.
+*/
+
+/**
+ * @file common/ARMCMx/nvic.c
+ * @brief Cortex-Mx NVIC support code.
+ *
+ * @addtogroup COMMON_ARMCMx_NVIC
+ * @{
+ */
+
+#include "hal.h"
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Sets the priority of an interrupt handler and enables it.
+ * @note The parameters are not tested for correctness.
+ *
+ * @param[in] n the interrupt number
+ * @param[in] prio the interrupt priority mask
+ */
+void nvicEnableVector(IRQn_Type n, uint32_t prio) {
+
+ NVIC->IP[n] = NVIC_PRIORITY_MASK(prio);
+ NVIC->ICPR[n >> 5] = 1 << (n & 0x1F);
+ NVIC->ISER[n >> 5] = 1 << (n & 0x1F);
+}
+
+/**
+ * @brief Disables an interrupt handler.
+ * @note The parameters are not tested for correctness.
+ *
+ * @param[in] n the interrupt number
+ */
+void nvicDisableVector(IRQn_Type n) {
+
+ NVIC->ICER[n >> 5] = 1 << (n & 0x1F);
+ NVIC->IP[n] = 0;
+}
+
+/**
+ * @brief Changes the priority of a system handler.
+ * @note The parameters are not tested for correctness.
+ *
+ * @param[in] handler the system handler number
+ * @param[in] prio the system handler priority mask
+ */
+void nvicSetSystemHandlerPriority(IRQn_Type handler, uint32_t prio) {
+
+ SCB->SHP[((uint32_t)(handler) & 15) - 4] = NVIC_PRIORITY_MASK(prio);
+}
+
+/** @} */
diff --git a/os/hal/ports/common/ARMCMx/nvic.h b/os/hal/ports/common/ARMCMx/nvic.h new file mode 100644 index 000000000..82fde801c --- /dev/null +++ b/os/hal/ports/common/ARMCMx/nvic.h @@ -0,0 +1,69 @@ +/*
+ 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.
+*/
+
+/**
+ * @file common/ARMCMx/nvic.h
+ * @brief Cortex-Mx NVIC support macros and structures.
+ *
+ * @addtogroup COMMON_ARMCMx_NVIC
+ * @{
+ */
+
+#ifndef _NVIC_H_
+#define _NVIC_H_
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/**
+ * @brief Priority level to priority mask conversion macro.
+ */
+#define NVIC_PRIORITY_MASK(prio) ((prio) << (8 - __NVIC_PRIO_BITS))
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void nvicEnableVector(IRQn_Type n, uint32_t prio);
+ void nvicDisableVector(IRQn_Type n);
+ void nvicSetSystemHandlerPriority(IRQn_Type handler, uint32_t prio);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _NVIC_H_ */
+
+/** @} */
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