1 files changed, 270 insertions, 0 deletions
diff --git a/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h b/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h
new file mode 100644
index 0000000..a0b4dfc
--- /dev/null
+++ b/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h
@@ -0,0 +1,270 @@
+/*
+    Copyright (C) 2014..2017 Marco Veeneman
+
+    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    GPTM/hal_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 HAL_ST_LLD_H
+#define HAL_ST_LLD_H
+
+#include "mcuconf.h"
+#include "tiva_registry.h"
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/**
+ * @name    Configuration options
+ * @{
+ */
+
+/**
+ * @brief   SysTick timer IRQ priority.
+ */
+#if !defined(TIVA_ST_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define TIVA_ST_IRQ_PRIORITY                2
+#endif
+
+/**
+ * @brief   GPTx 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.
+ */
+#if !defined(TIVA_ST_TIMER_NUMBER) || defined(__DOXYGEN__)
+#define TIVA_ST_TIMER_NUMBER                0
+#endif
+
+/**
+ * @brief   When set to @p TRUE a wide timer is used. When set to @p FALSE a
+ *          normal timer is used.
+ */
+#if !defined(TIVA_ST_USE_WIDE_TIMER) || defined(__DOXYGEN__)
+#define TIVA_ST_USE_WIDE_TIMER              TRUE
+#endif
+
+/**
+ * @}
+ */
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+#if (TIVA_ST_USE_WIDE_TIMER == TRUE)
+
+#if TIVA_ST_TIMER_NUMBER == 0
+#if !TIVA_HAS_WGPT0
+#error "WGPT0 not present"
+#endif
+#define TIVA_ST_TIM                         WTIMER0_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 1
+#if !TIVA_HAS_WGPT1
+#error "WGPT1 not present"
+#endif
+#define TIVA_ST_TIM                         WTIMER1_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 2
+#if !TIVA_HAS_WGPT2
+#error "WGPT2 not present"
+#endif
+#define TIVA_ST_TIM                         WTIMER2_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 3
+#if !TIVA_HAS_WGPT3
+#error "WGPT3 not present"
+#endif
+#define TIVA_ST_TIM                         WTIMER3_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 4
+#if !TIVA_HAS_WGPT4
+#error "WGPT4 not present"
+#endif
+#define TIVA_ST_TIM                         WTIMER4_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 5
+#if !TIVA_HAS_WGPT5
+#error "WGPT5 not present"
+#endif
+#define TIVA_ST_TIM                         WTIMER5_BASE
+
+#else
+#error "TIVA_ST_USE_TIMER specifies an unsupported timer"
+#endif
+
+#elif (TIVA_ST_USE_WIDE_TIMER == FALSE)
+
+#if TIVA_ST_TIMER_NUMBER == 0
+#if !TIVA_HAS_GPT0
+#error "GPT0 not present"
+#endif
+#define TIVA_ST_TIM                         TIMER0_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 1
+#if !TIVA_HAS_GPT1
+#error "GPT1 not present"
+#endif
+#define TIVA_ST_TIM                         TIMER1_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 2
+#if !TIVA_HAS_GPT2
+#error "GPT2 not present"
+#endif
+#define TIVA_ST_TIM                         TIMER2_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 3
+#if !TIVA_HAS_GPT3
+#error "GPT3 not present"
+#endif
+#define TIVA_ST_TIM                         TIMER3_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 4
+#if !TIVA_HAS_GPT4
+#error "GPT4 not present"
+#endif
+#define TIVA_ST_TIM                         TIMER4_BASE
+
+#elif TIVA_ST_TIMER_NUMBER == 5
+#if !TIVA_HAS_GPT5
+#error "GPT5 not present"
+#endif
+#define TIVA_ST_TIM                         TIMER5_BASE
+
+#else
+#error "TIVA_ST_TIMER_NUMBER specifies an unsupported timer"
+#endif
+
+#else
+#error "wrong value defined for TIVA_ST_USE_WIDE_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) (((systime_t) 0xffffffff) - HWREG(TIVA_ST_TIM + TIMER_O_TAV));
+}
+
+/**
+ * @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)
+{
+  HWREG(TIVA_ST_TIM + TIMER_O_TAMATCHR) = (systime_t) (((systime_t) 0xffffffff) - time);
+  HWREG(TIVA_ST_TIM + TIMER_O_ICR) = HWREG(TIVA_ST_TIM + TIMER_O_MIS);
+  HWREG(TIVA_ST_TIM + TIMER_O_IMR) = TIMER_IMR_TAMIM;
+}
+
+/**
+ * @brief   Stops the alarm interrupt.
+ *
+ * @notapi
+ */
+static inline void st_lld_stop_alarm(void)
+{
+  HWREG(TIVA_ST_TIM + TIMER_O_IMR) = 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)
+{
+  HWREG(TIVA_ST_TIM + TIMER_O_TAMATCHR) = (systime_t) (((systime_t) 0xffffffff) - 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) (((systime_t)0xffffffff) - HWREG(TIVA_ST_TIM + TIMER_O_TAMATCHR));
+}
+
+/**
+ * @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) ((HWREG(TIVA_ST_TIM + TIMER_O_IMR) & TIMER_IMR_TAMIM) !=0);
+}
+
+#endif /* HAL_ST_LLD_H */
+
+/**
+ * @}
+ */