1 files changed, 148 insertions, 0 deletions
diff --git a/bsps/arm/imxrt/mcux-sdk/drivers/rtwdog/fsl_rtwdog.c b/bsps/arm/imxrt/mcux-sdk/drivers/rtwdog/fsl_rtwdog.c
new file mode 100644
index 0000000000..4b49280bf8
--- /dev/null
+++ b/bsps/arm/imxrt/mcux-sdk/drivers/rtwdog/fsl_rtwdog.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2016, Freescale Semiconductor, Inc.
+ * Copyright 2016-2019 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "fsl_rtwdog.h"
+
+/* Component ID definition, used by tools. */
+#ifndef FSL_COMPONENT_ID
+#define FSL_COMPONENT_ID "platform.drivers.rtwdog"
+#endif
+
+/*******************************************************************************
+ * Code
+ ******************************************************************************/
+
+/*!
+ * brief Clears the RTWDOG flag.
+ *
+ * This function clears the RTWDOG status flag.
+ *
+ * Example to clear an interrupt flag:
+ * code
+ *   RTWDOG_ClearStatusFlags(wdog_base,kRTWDOG_InterruptFlag);
+ * endcode
+ * param base        RTWDOG peripheral base address.
+ * param mask        The status flags to clear.
+ *                    The parameter can be any combination of the following values:
+ *                    arg kRTWDOG_InterruptFlag
+ */
+void RTWDOG_ClearStatusFlags(RTWDOG_Type *base, uint32_t mask)
+{
+    if ((mask & (uint32_t)kRTWDOG_InterruptFlag) != 0U)
+    {
+        base->CS |= RTWDOG_CS_FLG_MASK;
+    }
+}
+
+/*!
+ * brief Initializes the RTWDOG configuration structure.
+ *
+ * This function initializes the RTWDOG configuration structure to default values. The default
+ * values are:
+ * code
+ *   rtwdogConfig->enableRtwdog = true;
+ *   rtwdogConfig->clockSource = kRTWDOG_ClockSource1;
+ *   rtwdogConfig->prescaler = kRTWDOG_ClockPrescalerDivide1;
+ *   rtwdogConfig->workMode.enableWait = true;
+ *   rtwdogConfig->workMode.enableStop = false;
+ *   rtwdogConfig->workMode.enableDebug = false;
+ *   rtwdogConfig->testMode = kRTWDOG_TestModeDisabled;
+ *   rtwdogConfig->enableUpdate = true;
+ *   rtwdogConfig->enableInterrupt = false;
+ *   rtwdogConfig->enableWindowMode = false;
+ *   rtwdogConfig->windowValue = 0U;
+ *   rtwdogConfig->timeoutValue = 0xFFFFU;
+ * endcode
+ *
+ * param config Pointer to the RTWDOG configuration structure.
+ * see rtwdog_config_t
+ */
+void RTWDOG_GetDefaultConfig(rtwdog_config_t *config)
+{
+    assert(config != NULL);
+
+    /* Initializes the configure structure to zero. */
+    (void)memset(config, 0, sizeof(*config));
+
+    config->enableRtwdog         = true;
+    config->clockSource          = kRTWDOG_ClockSource1;
+    config->prescaler            = kRTWDOG_ClockPrescalerDivide1;
+    config->workMode.enableWait  = true;
+    config->workMode.enableStop  = false;
+    config->workMode.enableDebug = false;
+    config->testMode             = kRTWDOG_TestModeDisabled;
+    config->enableUpdate         = true;
+    config->enableInterrupt      = false;
+    config->enableWindowMode     = false;
+    config->windowValue          = 0U;
+    config->timeoutValue         = 0xFFFFU;
+}
+
+/*!
+ * brief Initializes the RTWDOG module.
+ *
+ * This function initializes the RTWDOG.
+ * To reconfigure the RTWDOG without forcing a reset first, enableUpdate must be set to true
+ * in the configuration.
+ *
+ * Example:
+ * code
+ *   rtwdog_config_t config;
+ *   RTWDOG_GetDefaultConfig(&config);
+ *   config.timeoutValue = 0x7ffU;
+ *   config.enableUpdate = true;
+ *   RTWDOG_Init(wdog_base,&config);
+ * endcode
+ *
+ * param base   RTWDOG peripheral base address.
+ * param config The configuration of the RTWDOG.
+ */
+void RTWDOG_Init(RTWDOG_Type *base, const rtwdog_config_t *config)
+{
+    assert(NULL != config);
+
+    uint32_t value        = 0U;
+    uint32_t primaskValue = 0U;
+
+    value = RTWDOG_CS_EN(config->enableRtwdog) | RTWDOG_CS_CLK(config->clockSource) |
+            RTWDOG_CS_INT(config->enableInterrupt) | RTWDOG_CS_WIN(config->enableWindowMode) |
+            RTWDOG_CS_UPDATE(config->enableUpdate) | RTWDOG_CS_DBG(config->workMode.enableDebug) |
+            RTWDOG_CS_STOP(config->workMode.enableStop) | RTWDOG_CS_WAIT(config->workMode.enableWait) |
+            RTWDOG_CS_PRES(config->prescaler) | RTWDOG_CS_CMD32EN(1U) | RTWDOG_CS_TST(config->testMode);
+
+    /* Disable the global interrupts. Otherwise, an interrupt could effectively invalidate the unlock sequence
+     * and the WCT may expire. After the configuration finishes, re-enable the global interrupts. */
+    primaskValue = DisableGlobalIRQ();
+    RTWDOG_Unlock(base);
+    base->WIN   = config->windowValue;
+    base->TOVAL = config->timeoutValue;
+    base->CS    = value;
+    while ((base->CS & RTWDOG_CS_RCS_MASK) == 0U)
+    {
+    }
+    EnableGlobalIRQ(primaskValue);
+}
+
+/*!
+ * brief De-initializes the RTWDOG module.
+ *
+ * This function shuts down the RTWDOG.
+ * Ensure that the WDOG_CS.UPDATE is 1, which means that the register update is enabled.
+ *
+ * param base   RTWDOG peripheral base address.
+ */
+void RTWDOG_Deinit(RTWDOG_Type *base)
+{
+    uint32_t primaskValue = 0U;
+
+    /* Disable the global interrupts */
+    primaskValue = DisableGlobalIRQ();
+    RTWDOG_Unlock(base);
+    RTWDOG_Disable(base);
+    EnableGlobalIRQ(primaskValue);
+}