[bsp][nxp/mcxn10] Initial support for RTC driver.

Signed-off-by: Yilin Sun <imi415@imi.moe>

bsp/nxp/mcxn/Libraries/drivers/drv_rtc.c

@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2006-2024, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2024-02-06     Yilin Sun    Initial version.
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <sys/time.h>
+#include "drv_rtc.h"
+#include "fsl_common.h"
+#include "fsl_irtc.h"
+
+#ifdef RT_USING_RTC
+
+static rt_err_t mcx_rtc_init(rt_device_t dev)
+{
+    irtc_config_t rtc_cfg;
+
+    IRTC_GetDefaultConfig(&rtc_cfg);
+
+    //rtc_cfg.clockSelect = kIRTC_Clk32K;
+
+    if (IRTC_Init(RTC0, &rtc_cfg) != kStatus_Success)
+    {
+        return -RT_EIO;
+    }
+
+    return RT_EOK;
+}
+
+static rt_err_t mcx_rtc_get_time(time_t *ts)
+{
+    struct tm tm_new = {0};
+
+    irtc_datetime_t rtc_date;
+
+    IRTC_GetDatetime(RTC0, &rtc_date);
+
+    tm_new.tm_sec = rtc_date.second;
+    tm_new.tm_min = rtc_date.minute;
+    tm_new.tm_hour = rtc_date.hour;
+
+    tm_new.tm_mday = rtc_date.day;
+    tm_new.tm_mon = rtc_date.month - 1;
+    tm_new.tm_year = rtc_date.year - 1900;
+
+    *ts = timegm(&tm_new);
+
+    return RT_EOK;
+}
+
+static rt_err_t mcx_rtc_set_time(time_t *ts)
+{
+    struct tm now;
+    irtc_datetime_t rtc_date;
+
+    gmtime_r(ts, &now);
+
+    rtc_date.second = now.tm_sec ;
+    rtc_date.minute = now.tm_min ;
+    rtc_date.hour   = now.tm_hour;
+
+    rtc_date.weekDay = now.tm_wday;
+    rtc_date.day     = now.tm_mday;
+    rtc_date.month   = now.tm_mon  + 1;
+    rtc_date.year    = now.tm_year + 1900;
+
+    IRTC_SetWriteProtection(RTC0, false);
+    IRTC_SetDatetime(RTC0, &rtc_date);
+
+    return RT_EOK;
+}
+
+static rt_err_t mcx_rtc_control(rt_device_t dev, int cmd, void *args)
+{
+    switch (cmd)
+    {
+    case RT_DEVICE_CTRL_RTC_GET_TIME:
+        mcx_rtc_get_time((time_t *)args);
+        break;
+
+    case RT_DEVICE_CTRL_RTC_SET_TIME:
+        mcx_rtc_set_time((time_t *)args);
+        break;
+
+    case RT_DEVICE_CTRL_RTC_SET_ALARM:
+    /* TODO: Implement alarm features */
+    default:
+        return -RT_EINVAL;
+    }
+
+    return RT_EOK;
+}
+
+static struct rt_device device =
+{
+    .type    = RT_Device_Class_RTC,
+    .init    = mcx_rtc_init,
+    .open    = RT_NULL,
+    .close   = RT_NULL,
+    .read    = RT_NULL,
+    .write   = RT_NULL,
+    .control = mcx_rtc_control,
+};
+
+int rt_hw_rtc_init(void)
+{
+    rt_err_t ret = RT_EOK;
+
+    ret = rt_device_register(&device, "rtc", RT_DEVICE_FLAG_RDWR);
+    if (ret != RT_EOK)
+    {
+        return ret;
+    }
+
+    return RT_EOK;
+}
+
+INIT_DEVICE_EXPORT(rt_hw_rtc_init);
+
+#endif /*RT_USING_RTC */

bsp/nxp/mcxn/Libraries/drivers/drv_rtc.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2006-2024, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2024-02-06     Yilin Sun    Initial version.
+ */
+
+#ifndef __DRV_RTC_H__
+#define __DRV_RTC_H__
+
+#include <rtthread.h>
+#include <rtdevice.h>
+
+int rt_hw_rtc_init(void);
+
+#endif

bsp/nxp/mcxn/frdm-mcxn947/board/board.c

@@ -66,7 +66,6 @@ void rt_hw_board_init()
     /* enable VREF */
     SPC0->ACTIVE_CFG1 |= 0xFFFFFFFF;
 
-
     CLOCK_EnableClock(kCLOCK_Dma0);
     CLOCK_EnableClock(kCLOCK_Dma1);
 
@@ -75,10 +74,11 @@ void rt_hw_board_init()
     EDMA_Init(DMA0, &userConfig);
     EDMA_Init(DMA1, &userConfig);
 
-
     /* This init has finished in secure side of TF-M  */
     BOARD_InitBootClocks();
 
+    CLOCK_SetupClk16KClocking(kCLOCK_Clk16KToAll);
+
     SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
     /* set pend exception priority */
     NVIC_SetPriority(PendSV_IRQn, (1 << __NVIC_PRIO_BITS) - 1);