bsp/nxp/mcx/mcxe: MCXE2: Add WDT driver.

Signed-off-by: Yilin Sun <[email protected]>

Author: imi415

bsp/nxp/mcx/mcxe/Libraries/drivers/drv_wdt.c

@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2006-2024 RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2024-11-25     hywing       The first version for NXP MCXA153 Board
+ */
+
+#include <rtthread.h>
+#include "drv_wdt.h"
+
+#include "fsl_wdog32.h"
+#include "fsl_clock.h"
+
+#ifdef RT_USING_WDT
+
+#define WDT                   WDOG
+#define WDT_CLOCK_SOURCE      kWDOG32_ClockSource1 /* 0: Bus, 1: LPO, 2: SOSC, 3: SIRC */
+#define WDT_CLOCK_SOURCE_FREQ (128 * 1000 / 256)   /* 128kHz LPO divided by 256 */
+
+#define APP_WDT_IRQn        WDOG_EWM_IRQn
+#define APP_WDT_IRQ_HANDLER WDOG_EWM_IRQHandler
+
+struct mcx_wdt
+{
+    rt_watchdog_t watchdog;
+    WDOG_Type    *wdt_base;
+};
+
+static struct mcx_wdt wdt_dev;
+
+void APP_WDT_IRQ_HANDLER(void)
+{
+    /* ---- There's no WARN feature for WDOG32, will reset. ---- */
+    for (;;)
+    {
+    }
+}
+
+static rt_err_t wdt_init(rt_watchdog_t *wdt)
+{
+    wdog32_config_t config;
+
+    WDOG32_GetDefaultConfig(&config);
+
+    config.enableWdog32    = false;
+    config.clockSource     = WDT_CLOCK_SOURCE;
+    config.prescaler       = kWDOG32_ClockPrescalerDivide256;
+    config.timeoutValue    = WDT_CLOCK_SOURCE_FREQ * 5;
+    config.enableInterrupt = true;
+
+    WDOG32_Init(WDT, &config);
+    NVIC_EnableIRQ(APP_WDT_IRQn);
+
+    return RT_EOK;
+}
+
+static rt_err_t wdt_control(rt_watchdog_t *wdt, int cmd, void *arg)
+{
+    /* Feed fast path */
+    if (cmd == RT_DEVICE_CTRL_WDT_KEEPALIVE)
+    {
+        WDOG32_Refresh(wdt_dev.wdt_base);
+        return RT_EOK;
+    }
+
+    __disable_irq();
+    WDOG32_Unlock(wdt_dev.wdt_base);
+
+    switch (cmd)
+    {
+    case RT_DEVICE_CTRL_WDT_START:
+        WDOG32_Enable(wdt_dev.wdt_base);
+        break;
+
+    case RT_DEVICE_CTRL_WDT_STOP:
+        WDOG32_Disable(wdt_dev.wdt_base);
+        break;
+
+    case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
+        if (arg != RT_NULL)
+        {
+            uint32_t timeout = *((uint32_t *)arg);
+            timeout          = timeout * WDT_CLOCK_SOURCE_FREQ;
+            WDOG32_SetTimeoutValue(wdt_dev.wdt_base, timeout);
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    __enable_irq();
+    return RT_EOK;
+}
+
+static struct rt_watchdog_ops wdt_ops =
+    {
+        wdt_init,
+        wdt_control,
+};
+
+int rt_hw_wdt_init(void)
+{
+    wdt_dev.wdt_base     = WDT;
+    wdt_dev.watchdog.ops = &wdt_ops;
+
+    if (rt_hw_watchdog_register(&wdt_dev.watchdog, "wdt", RT_DEVICE_FLAG_DEACTIVATE, RT_NULL) != RT_EOK)
+    {
+        rt_kprintf("wdt register failed\n");
+        return -RT_ERROR;
+    }
+
+    return RT_EOK;
+}
+
+INIT_BOARD_EXPORT(rt_hw_wdt_init);
+
+#endif /* RT_USING_WDT */

bsp/nxp/mcx/mcxe/Libraries/drivers/drv_wdt.h

@@ -0,0 +1,19 @@
+/*
+* Copyright (c) 2006-2024 RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2024-11-25     hywing       The first version for NXP MCXA153 Board
+ */
+
+#ifndef __DRV_WDT_H__
+#define __DRV_WDT_H__
+
+#include <rtthread.h>
+#include <rtdevice.h>
+
+int rt_hw_wdt_init(void);
+
+#endif /* __DRV_WDT_H__ */