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| author | Diego Ismirlian <dismirlian@gmail.com> | 2019-08-24 17:45:41 -0300 |
|---|---|---|
| committer | Diego Ismirlian <dismirlian@gmail.com> | 2019-08-24 17:45:41 -0300 |
| commit | 7b2c61a676e024163057ec5ccc508a29ab3b9ed4 (patch) | |
| tree | 5d1f5423a4e720d657681794ac81dc2a2004cbb0 /os/hal/ports/KINETIS/LLD/PITv1/hal_st_lld.c | |
| parent | 81391097156ce2c9fc71c3350457522841e10095 (diff) | |
| parent | e346e779339636f578536785014609e46866fb9c (diff) | |
| download | ChibiOS-Contrib-7b2c61a676e024163057ec5ccc508a29ab3b9ed4.tar.gz ChibiOS-Contrib-7b2c61a676e024163057ec5ccc508a29ab3b9ed4.tar.bz2 ChibiOS-Contrib-7b2c61a676e024163057ec5ccc508a29ab3b9ed4.zip | |
Merge branch 'master' of https://github.com/ChibiOS/ChibiOS-Contrib
Diffstat (limited to 'os/hal/ports/KINETIS/LLD/PITv1/hal_st_lld.c')
| -rw-r--r-- | os/hal/ports/KINETIS/LLD/PITv1/hal_st_lld.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/os/hal/ports/KINETIS/LLD/PITv1/hal_st_lld.c b/os/hal/ports/KINETIS/LLD/PITv1/hal_st_lld.c new file mode 100644 index 0000000..5930b76 --- /dev/null +++ b/os/hal/ports/KINETIS/LLD/PITv1/hal_st_lld.c @@ -0,0 +1,98 @@ +/*
+ ChibiOS - Copyright (C) 2014-2015 Fabio Utzig
+
+ 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 PITv1/hal_st_lld.c
+ * @brief ST Driver subsystem low level driver code.
+ *
+ * @addtogroup ST
+ * @{
+ */
+
+#include "hal.h"
+
+#if (OSAL_ST_MODE != OSAL_ST_MODE_NONE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+#if (OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC) || defined(__DOXYGEN__)
+/**
+ * @brief System Timer vector.
+ * @details This interrupt is used for system tick in periodic mode.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(SysTick_Handler) {
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ osalOsTimerHandlerI();
+ osalSysUnlockFromISR();
+
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level ST driver initialization.
+ *
+ * @notapi
+ */
+void st_lld_init(void) {
+#if OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC
+ /* Periodic systick mode, the Cortex-Mx internal systick timer is used
+ in this mode.*/
+ SysTick->LOAD = (KINETIS_SYSCLK_FREQUENCY / OSAL_ST_FREQUENCY) - 1;
+ SysTick->VAL = 0;
+ SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
+ SysTick_CTRL_ENABLE_Msk |
+ SysTick_CTRL_TICKINT_Msk;
+
+ /* IRQ enabled.*/
+ nvicSetSystemHandlerPriority(HANDLER_SYSTICK, KINETIS_ST_IRQ_PRIORITY);
+#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */
+}
+
+#endif /* OSAL_ST_MODE != OSAL_ST_MODE_NONE */
+
+/** @} */
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