diff options
Diffstat (limited to 'os/hal/ports/AVR/XMEGA/LLD/WDGv1')
-rw-r--r-- | os/hal/ports/AVR/XMEGA/LLD/WDGv1/driver.mk | 9 | ||||
-rw-r--r-- | os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.c | 268 | ||||
-rw-r--r-- | os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.h | 139 |
3 files changed, 416 insertions, 0 deletions
diff --git a/os/hal/ports/AVR/XMEGA/LLD/WDGv1/driver.mk b/os/hal/ports/AVR/XMEGA/LLD/WDGv1/driver.mk new file mode 100644 index 000000000..70ba572bb --- /dev/null +++ b/os/hal/ports/AVR/XMEGA/LLD/WDGv1/driver.mk @@ -0,0 +1,9 @@ +ifeq ($(USE_SMART_BUILD),yes)
+ifneq ($(findstring HAL_USE_WDG TRUE,$(HALCONF)),)
+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.c
+endif
+else
+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.c
+endif
+
+PLATFORMINC += $(CHIBIOS)/os/hal/ports/AVR/XMEGA/LLD/WDGv1
diff --git a/os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.c b/os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.c new file mode 100644 index 000000000..505c20d72 --- /dev/null +++ b/os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.c @@ -0,0 +1,268 @@ +/*
+ ChibiOS - Copyright (C) 2016..2018 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 hal_wdg_lld.c
+ * @brief AVR WDG Driver subsystem low level driver source.
+ *
+ * @addtogroup WDG
+ * @{
+ */
+
+#include "hal.h"
+
+#if (HAL_USE_WDG == TRUE) || defined(__DOXYGEN__)
+
+/*==========================================================================*/
+/* Driver local definitions. */
+/*==========================================================================*/
+
+/*==========================================================================*/
+/* Driver exported variables. */
+/*==========================================================================*/
+
+#if (AVR_WDG_USE_WDT == TRUE) || defined(__DOXYGEN__)
+WDGDriver WDTD1;
+#endif
+
+/*==========================================================================*/
+/* Driver local variables. */
+/*==========================================================================*/
+
+/*==========================================================================*/
+/* Driver local functions. */
+/*==========================================================================*/
+
+/**
+ * @brief Check if Synchronisation busy flag is set.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ * @return synchronisazion busy flag value
+ * @retval true The synchronisation is in process.
+ * @retval false The synchronisation is done.
+ */
+static bool wdg_get_sync_busy_flag(WDGDriver *wdgp) {
+
+ if (wdgp->wdg->STATUS & WDT_SYNCBUSY_bm)
+ return true;
+ else
+ return false;
+}
+
+/**
+ * @brief Enable Watchdog module.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ */
+static void wdg_enable(WDGDriver *wdgp) {
+
+ uint8_t cfg = wdgp->wdg->CTRL | WDT_ENABLE_bm | WDT_CEN_bm;
+ CCP = CCP_IOREG_gc;
+ wdgp->wdg->CTRL = cfg;
+
+ while (wdg_get_sync_busy_flag(wdgp));
+}
+
+/**
+ * @brief Set the watchdog period for the reset operation.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ */
+static void wdg_set_period(WDGDriver *wdgp) {
+
+ uint8_t cfg = WDT_ENABLE_bm | WDT_CEN_bm | wdgp->config->ntp;
+ CCP = CCP_IOREG_gc;
+ wdgp->wdg->CTRL = cfg;
+
+ while (wdg_get_sync_busy_flag(wdgp));
+}
+
+/**
+ * @brief Disable Watchdog module.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ */
+static void wdg_disable(WDGDriver *wdgp) {
+
+ uint8_t cfg = (wdgp->wdg->CTRL & ~WDT_ENABLE_bm) | WDT_CEN_bm;
+ CCP = CCP_IOREG_gc;
+ wdgp->wdg->CTRL = cfg;
+}
+
+/**
+ * @brief Return status of window mode enable bit.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ * @return The status of the watchdog module
+ * @retval true The WD Window Mode is enabled.
+ * @retval false The WD Eindow Mode is not enabled.
+ */
+/*static bool wdg_is_window_mode_enabled(WDGDriver *wdgp) {
+
+ if (wdgp->wdg->WINCTRL & WDT_WEN_bm)
+ return true;
+ else
+ return false;
+}
+*/
+
+/**
+ * @brief Enable watchdog window mode.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ * @return wd_enble status of the watchdog before the operation
+ * @retval true The WD is enabled before enabling window mode.
+ * @retval false The WD is not enabled before enabling window mode.
+ */
+static bool wdg_enable_window_mode(WDGDriver *wdgp) {
+
+ uint8_t wdStatus = wdgp->wdg->CTRL & WDT_ENABLE_bm;
+ uint8_t cfg = wdgp->wdg->WINCTRL | WDT_WEN_bm | WDT_WCEN_bm;
+
+ CCP = CCP_IOREG_gc;
+ wdgp->wdg->WINCTRL = cfg;
+
+ while (wdg_get_sync_busy_flag(wdgp));
+
+ return wdStatus;
+}
+
+/**
+ * @brief Enable window mode and set period.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ * @return The satus of the watchdog before this operation
+ * @retval true The WD is enabled before enabling window mode.
+ * @retval false The WD is not enabled before enabling window mode.
+ */
+static bool wdg_set_window_period(WDGDriver *wdgp) {
+
+ uint8_t wdStatus = wdgp->wdg->CTRL & WDT_ENABLE_bm;
+ uint8_t cfg = WDT_WEN_bm | WDT_WCEN_bm | wdgp->config->ntp;
+
+ CCP = CCP_IOREG_gc;
+ wdgp->wdg->WINCTRL = cfg;
+
+ while (wdg_get_sync_busy_flag(wdgp));
+
+ return wdStatus;
+}
+
+/**
+ * @brief Disable window mode.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ */
+static void wdg_disable_window_mode(WDGDriver *wdgp) {
+
+ uint8_t cfg = (wdgp->wdg->WINCTRL & ~WDT_WEN_bm) | WDT_WCEN_bm;
+
+ CCP = CCP_IOREG_gc;
+ wdgp->wdg->WINCTRL = cfg;
+}
+
+/**
+ * @brief Low level reset of the Watchgot timer by software.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ */
+static void wdg_reset(WDGDriver *wdgp) {
+
+ (void)wdgp;
+ asm("wdr"); /* The reset is made by calling WDR instruction. */
+}
+
+/*==========================================================================*/
+/* Driver interrupt handlers. */
+/*==========================================================================*/
+
+/*==========================================================================*/
+/* Driver exported functions. */
+/*==========================================================================*/
+
+/**
+ * @brief Low level WDG driver initialization.
+ *
+ * @notapi
+ */
+void wdg_lld_init(void) {
+
+#if AVR_WDG_USE_WDT
+ WDTD1.state = WDG_STOP;
+ WDTD1.wdg = &WDT;
+#endif
+ /* TODO: See if the configuration of the watchgod must
+ * be done with a default configuration.
+ */
+}
+
+/**
+ * @brief Configures and activates the WDG peripheral.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ *
+ * @notapi
+ */
+void wdg_lld_start(WDGDriver *wdgp) {
+
+ /* TODO: Use the wdgp->state to see if it is a start or a restart
+ * and look what to do
+ */
+
+ if (wdgp->config->mode) {
+ wdg_set_window_period(wdgp);
+ wdg_enable_window_mode(wdgp);
+ }
+ else {
+ wdg_set_period(wdgp);
+ wdg_enable(wdgp);
+ }
+
+ while (wdg_get_sync_busy_flag(wdgp));
+}
+
+/**
+ * @brief Deactivates the WDG peripheral.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ *
+ * @notapi
+ */
+void wdg_lld_stop(WDGDriver *wdgp) {
+
+ if (wdgp->config->mode) {
+ wdg_disable_window_mode(wdgp);
+ }
+ else {
+ wdg_disable(wdgp);
+ }
+}
+
+/**
+ * @brief Reloads WDG's counter.
+ *
+ * @param[in] wdgp pointer to the @p WDGDriver object
+ *
+ * @notapi
+ */
+void wdg_lld_reset(WDGDriver *wdgp) {
+
+ wdg_reset(wdgp);
+}
+
+#endif /* HAL_USE_WDG */
+
+/** @} */
diff --git a/os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.h b/os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.h new file mode 100644 index 000000000..594758c5b --- /dev/null +++ b/os/hal/ports/AVR/XMEGA/LLD/WDGv1/hal_wdg_lld.h @@ -0,0 +1,139 @@ +/*
+ ChibiOS - Copyright (C) 2016..2018 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 WDGv1/hal_wdg_lld.h
+ * @brief WDG Driver subsystem low level driver header.
+ *
+ * @addtogroup WDG
+ * @{
+ */
+
+#ifndef HAL_WDG_LLD_H
+#define HAL_WDG_LLD_H
+
+#if (HAL_USE_WDG == TRUE) || defined(__DOXYGEN__)
+
+/*==========================================================================*/
+/* Driver constants. */
+/*==========================================================================*/
+
+/*==========================================================================*/
+/* Driver pre-compile time settings. */
+/*==========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/**
+ * @brief WDT driver enable switch.
+ * @note The default is @p FALSE.
+ */
+#if !defined(AVR_WDG_USE_WDT) || defined(__DOXYGEN__)
+#define AVR_WDG_USE_WDT FALSE
+#endif
+/** @} */
+
+/*==========================================================================*/
+/* Derived constants and error checks. */
+/*==========================================================================*/
+
+#define AVR_HAS_WDG TRUE
+
+#if AVR_WDG_USE_WDT && !AVR_HAS_WDG
+#error "WDT not present in the selected device"
+#endif
+
+#if !AVR_WDG_USE_WDT
+#error "WDT driver activated but no WDT peripheral assigned"
+#endif
+
+/*==========================================================================*/
+/* Driver data structures and types. */
+/*==========================================================================*/
+
+/**
+ * @brief Type of a structure representing an WDG driver.
+ */
+typedef struct WDGDriver WDGDriver;
+
+/**
+ * @brief Driver configuration structure.
+ * @note It could be empty on some architectures.
+ */
+typedef struct {
+ /**
+ * @brief Configuration of the WDT driver mode.
+ */
+ bool mode;
+ /**
+ * @brief Configuration of the WDT driver Nomal timeout period.
+ */
+ WDT_PER_t ntp;
+ /**
+ * @brief Configuration of the WDT driver Closed timeout period.
+ */
+ WDT_WPER_t ctp;
+} WDGConfig;
+
+/**
+ * @brief Structure representing an WDG driver.
+ */
+struct WDGDriver {
+ /**
+ * @brief Driver state.
+ */
+ wdgstate_t state;
+ /**
+ * @brief Current configuration data.
+ */
+ const WDGConfig *config;
+ /* End of the mandatory fields. */
+ /**
+ * @brief Pointer to the WDG*T registers block.
+ */
+ WDT_t *wdg;
+};
+
+/*==========================================================================*/
+/* Driver macros. */
+/*==========================================================================*/
+
+/*==========================================================================*/
+/* External declarations. */
+/*==========================================================================*/
+
+#if (AVR_WDG_USE_WDT == TRUE) && !defined(__DOXYGEN__)
+extern WDGDriver WDTD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void wdg_lld_init(void);
+ void wdg_lld_start(WDGDriver *wdgp);
+ void wdg_lld_stop(WDGDriver *wdgp);
+ void wdg_lld_reset(WDGDriver *wdgp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_WDG == TRUE */
+
+#endif /* HAL_WDG_LLD_H */
+
+/** @} */
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