diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h')
-rw-r--r-- | os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h b/os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h new file mode 100644 index 000000000..beefd16e2 --- /dev/null +++ b/os/hal/ports/STM32/LLD/TIMv1/hal_st_lld.h @@ -0,0 +1,210 @@ +/*
+ 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 STM32/st_lld.h
+ * @brief ST Driver subsystem low level driver header.
+ * @details This header is designed to be include-able without having to
+ * include other files from the HAL.
+ *
+ * @addtogroup ST
+ * @{
+ */
+
+#ifndef _ST_LLD_H_
+#define _ST_LLD_H_
+
+#include "mcuconf.h"
+#include "stm32_registry.h"
+#include "stm32_tim.h"
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/**
+ * @brief SysTick timer IRQ priority.
+ */
+#if !defined(STM32_ST_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_ST_IRQ_PRIORITY 8
+#endif
+
+/**
+ * @brief TIMx unit (by number) to be used for free running operations.
+ * @note You must select a 32 bits timer if a 32 bits @p systick_t type
+ * is required.
+ * @note Timers 2, 3, 4 and 5 are supported.
+ */
+#if !defined(STM32_ST_USE_TIMER) || defined(__DOXYGEN__)
+#define STM32_ST_USE_TIMER 2
+#endif
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+#if STM32_ST_USE_TIMER == 2
+#if !STM32_HAS_TIM2
+#error "TIM2 not present"
+#endif
+#define STM32_ST_TIM STM32_TIM2
+
+#elif STM32_ST_USE_TIMER == 3
+#if !STM32_HAS_TIM3
+#error "TIM3 not present"
+#endif
+#define STM32_ST_TIM STM32_TIM3
+
+#elif STM32_ST_USE_TIMER == 4
+#if !STM32_HAS_TIM4
+#error "TIM4 not present"
+#endif
+#define STM32_ST_TIM STM32_TIM4
+
+#elif STM32_ST_USE_TIMER == 5
+#if !STM32_HAS_TIM5
+#error "TIM5 not present"
+#endif
+#define STM32_ST_TIM STM32_TIM5
+
+#elif STM32_ST_USE_TIMER == 21
+#if !STM32_HAS_TIM21
+#error "TIM21 not present"
+#endif
+#define STM32_ST_TIM STM32_TIM21
+
+#elif STM32_ST_USE_TIMER == 22
+#if !STM32_HAS_TIM22
+#error "TIM22 not present"
+#endif
+#define STM32_ST_TIM STM32_TIM22
+
+#else
+#error "STM32_ST_USE_TIMER specifies an unsupported timer"
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void st_lld_init(void);
+#ifdef __cplusplus
+}
+#endif
+
+/*===========================================================================*/
+/* Driver inline functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Returns the time counter value.
+ *
+ * @return The counter value.
+ *
+ * @notapi
+ */
+static inline systime_t st_lld_get_counter(void) {
+
+ return (systime_t)STM32_ST_TIM->CNT;
+}
+
+/**
+ * @brief Starts the alarm.
+ * @note Makes sure that no spurious alarms are triggered after
+ * this call.
+ *
+ * @param[in] time the time to be set for the first alarm
+ *
+ * @notapi
+ */
+static inline void st_lld_start_alarm(systime_t time) {
+
+ STM32_ST_TIM->CCR[0] = (uint32_t)time;
+ STM32_ST_TIM->SR = 0;
+ STM32_ST_TIM->DIER = STM32_TIM_DIER_CC1IE;
+}
+
+/**
+ * @brief Stops the alarm interrupt.
+ *
+ * @notapi
+ */
+static inline void st_lld_stop_alarm(void) {
+
+ STM32_ST_TIM->DIER = 0;
+}
+
+/**
+ * @brief Sets the alarm time.
+ *
+ * @param[in] time the time to be set for the next alarm
+ *
+ * @notapi
+ */
+static inline void st_lld_set_alarm(systime_t time) {
+
+ STM32_ST_TIM->CCR[0] = (uint32_t)time;
+}
+
+/**
+ * @brief Returns the current alarm time.
+ *
+ * @return The currently set alarm time.
+ *
+ * @notapi
+ */
+static inline systime_t st_lld_get_alarm(void) {
+
+ return (systime_t)STM32_ST_TIM->CCR[0];
+}
+
+/**
+ * @brief Determines if the alarm is active.
+ *
+ * @return The alarm status.
+ * @retval false if the alarm is not active.
+ * @retval true is the alarm is active
+ *
+ * @notapi
+ */
+static inline bool st_lld_is_alarm_active(void) {
+
+ return (bool)((STM32_ST_TIM->DIER & STM32_TIM_DIER_CC1IE) != 0);
+}
+
+#endif /* _ST_LLD_H_ */
+
+/** @} */
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