Add AVR XMega system tick low level driver files.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10375 35acf78f-673a-0410-8e92-d51de3d6d3f4

3 files changed, 281 insertions, 0 deletions

diff --git a/os/hal/ports/AVR/XMEGA/LLD/TIMv1/driver.mk b/os/hal/ports/AVR/XMEGA/LLD/TIMv1/driver.mk
new file mode 100644
index 000000000..5e2fce138
--- /dev/null
+++ b/os/hal/ports/AVR/XMEGA/LLD/TIMv1/driver.mk
@@ -0,0 +1,19 @@
+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_st_lld.c

+

+ifeq ($(USE_SMART_BUILD),yes)

+ifneq ($(findstring HAL_USE_GPT TRUE,$(HALCONF)),)

+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_gpt_lld.c

+endif

+ifneq ($(findstring HAL_USE_ICU TRUE,$(HALCONF)),)

+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_icu_lld.c

+endif

+ifneq ($(findstring HAL_USE_PWM TRUE,$(HALCONF)),)

+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_pwm_lld.c

+endif

+else

+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_gpt_lld.c

+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_icu_lld.c

+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_pwm_lld.c

+endif

+

+PLATFORMINC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/TIMv1

diff --git a/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_st_lld.c b/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_st_lld.c
new file mode 100644
index 000000000..e8db98fb9
--- /dev/null
+++ b/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_st_lld.c
@@ -0,0 +1,105 @@
+/*

+    ChibiOS - Copyright (C) 2017 Theodore Ateba

+

+    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    TIMv1/hal_st_lld.c

+ * @brief   AVR XMEGA ST subsystem low level driver source file.

+ *

+ * @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 Timer handler for periodic mode.

+ */

+OSAL_IRQ_HANDLER(TCC0_OVF_vect) {

+

+  OSAL_IRQ_PROLOGUE();

+

+  osalSysLockFromISR();

+  osalOsTimerHandlerI();

+  osalSysUnlockFromISR();

+

+  OSAL_IRQ_EPILOGUE();

+}

+

+#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */

+

+#if (OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING) || defined(__DOXYGEN__)

+/* TODO: Add the Handler of the freerunning mode. */

+#endif /* OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING */

+

+/*===========================================================================*/

+/* Driver exported functions.                                                */

+/*===========================================================================*/

+

+/**

+ * @brief   Low level ST driver initialization.

+ *

+ * @notapi

+ */

+void st_lld_init(void) {

+

+#if (OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC) || defined(__DOXYGEN__)

+

+  TCC0.PER = (F_CPU/OSAL_ST_FREQUENCY) - 1;

+	TCC0.CTRLA     = ( TCC0.CTRLA & ~TC0_CLKSEL_gm ) | TC_CLKSEL_DIV1_gc;

+	TCC0.INTCTRLA  = ( TCC0.INTCTRLA & ~TC0_OVFINTLVL_gm ) | TC_OVFINTLVL_MED_gc;

+	PMIC.CTRL     |= PMIC_MEDLVLEN_bm;

+	sei();

+

+#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */

+

+#if (OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING) || defined(__DOXYGEN__)

+/* TODO: Add freerunning mode for. */

+#endif /* OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING */

+

+}

+

+#endif /* OSAL_ST_MODE != OSAL_ST_MODE_NONE */

+

+/** @} */

+

diff --git a/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_st_lld.h b/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_st_lld.h
new file mode 100644
index 000000000..5b40a3cbd
--- /dev/null
+++ b/os/hal/ports/AVR/XMEGA/LLD/TIMv1/hal_st_lld.h
@@ -0,0 +1,157 @@
+/*

+    ChibiOS - Copyright (C) 2017 Theodore Ateba

+

+    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    TIMv1/hal_st_lld.h

+ * @brief   AVR XMEGA ST Driver subsystem low level driver header file.

+ * @details This header is designed to be include-able without having to

+ *          include other files from the HAL.

+ *

+ * @addtogroup AVR

+ * @{

+ */

+

+#ifndef HAL_ST_LLD_H

+#define HAL_ST_LLD_H

+

+#include <avr/io.h>

+

+/*===========================================================================*/

+/* Driver constants.                                                         */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver pre-compile time settings.                                         */

+/*===========================================================================*/

+

+/*

+ * TODO: for models that have many timers,

+ *       could add AVR_XMEGA_ST_USE_TIMER

+ */

+

+/*===========================================================================*/

+/* Derived constants and error checks.                                       */

+/*===========================================================================*/

+

+/*

+ * TODO: error checks for valid timer selected

+ */

+

+/*===========================================================================*/

+/* Driver data structures and types.                                         */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver macros.                                                            */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* External declarations.                                                    */

+/*===========================================================================*/

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+  void st_lld_init(void);

+#ifdef __cplusplus

+}

+#endif

+

+#define TIFR_REG  TCC0.INTFLAGS

+

+/*===========================================================================*/

+/* 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) TCC0.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) {

+

+  TCC0.INTCTRLA  = ( TCC0.INTCTRLA & ~TC0_OVFINTLVL_gm ) | TC_OVFINTLVL_MED_gc;

+  PMIC.CTRL |= PMIC_MEDLVLEN_bm;

+}

+

+/**

+ * @brief   Stops the alarm interrupt.

+ *

+ * @notapi

+ */

+static inline void st_lld_stop_alarm(void) {

+

+  /* TODO: Implement this function. */

+}

+

+/**

+ * @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) {

+

+  TCC0.PER       = (uint16_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)TCC0.PER;

+}

+

+/**

+ * @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) {

+

+  /* TODO: Implement this function. */

+  return (bool) 0;

+}

+

+#endif /* HAL_ST_LLD_H */

+

+/** @} */