添加RTC设备驱动 (#5914)

* 添加RTC设备驱动

bsp/hc32f460/Libraries/CMSIS/Device/HDSC/HC32F460/Include/ddl_config.h

@@ -86,7 +86,7 @@ extern "C"
 #define DDL_PWC_ENABLE                              (DDL_ON)
 #define DDL_QSPI_ENABLE                             (DDL_OFF)
 #define DDL_RMU_ENABLE                              (DDL_OFF)
-#define DDL_RTC_ENABLE                              (DDL_OFF)
+#define DDL_RTC_ENABLE                              (DDL_ON)
 #define DDL_SDIOC_ENABLE                            (DDL_OFF)
 #define DDL_SPI_ENABLE                              (DDL_OFF)
 #define DDL_SRAM_ENABLE                             (DDL_ON)

bsp/hc32f460/Libraries/SConscript

@@ -19,6 +19,7 @@ HC32F460_StdPeriph_Driver/src/hc32f460_pwc.c
 HC32F460_StdPeriph_Driver/src/hc32f460_sram.c
 HC32F460_StdPeriph_Driver/src/hc32f460_utility.c
 HC32F460_StdPeriph_Driver/src/hc32f460_exint_nmi_swi.c
+HC32F460_StdPeriph_Driver/src/hc32f460_rtc.c
 """)
 
 #src += Glob('HC32F460_StdPeriph_Driver/src/*.c')

bsp/hc32f460/board/Kconfig

@@ -35,6 +35,25 @@ menu "On-chip Peripheral Drivers"
                 default y                                               
         endif
 
+    menuconfig BSP_USING_RTC
+        bool "Enable RTC"
+        select RT_USING_RTC
+        select RT_USING_LIBC
+        default n
+
+        if BSP_USING_RTC
+            choice
+                prompt "Select clock source"
+                default BSP_RTC_USING_LRC
+
+                config BSP_RTC_USING_XTAL32
+                    bool "RTC USING XTAL32"
+
+                config BSP_RTC_USING_LRC
+                    bool "RTC USING LRC"
+            endchoice
+        endif
+
 endmenu
 
 

bsp/hc32f460/drivers/SConscript

@@ -14,6 +14,9 @@ if GetDepend(['RT_USING_PIN']):
 if GetDepend(['RT_USING_SERIAL']):
     src += ['drv_usart.c']
 
+if GetDepend('BSP_USING_RTC'):
+    src += ['drv_rtc.c']
+
 
 CPPPATH = [cwd]
 group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)

bsp/hc32f460/drivers/drv_rtc.c

+/*
+ * Copyright (C) 2020, Huada Semiconductor Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author             Notes
+ * 2022-05-09     xiaoxiaolisunny    first version
+ */
+
+#include <board.h>
+#include <rtdbg.h>
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <sys/time.h>
+
+#ifdef BSP_USING_RTC
+
+static struct rt_device rtc;
+
+static time_t hc32_rtc_get_time_stamp(void)
+{
+    stc_rtc_date_time_t  stcRtcDateTime = {0};
+    struct tm tm_new = {0};
+
+    RTC_GetDateTime(RtcDataFormatDec, &stcRtcDateTime);
+
+    tm_new.tm_sec  = stcRtcDateTime.u8Second;
+    tm_new.tm_min  = stcRtcDateTime.u8Minute;
+    tm_new.tm_hour = stcRtcDateTime.u8Hour;
+    tm_new.tm_mday = stcRtcDateTime.u8Day;
+    tm_new.tm_mon  = stcRtcDateTime.u8Month - 1;
+    tm_new.tm_year = stcRtcDateTime.u8Year + 100;
+    tm_new.tm_wday = stcRtcDateTime.u8Weekday;
+
+    LOG_D("get rtc time.");
+    return timegm(&tm_new);
+}
+
+static rt_err_t hc32_rtc_set_time_stamp(time_t time_stamp)
+{
+    stc_rtc_date_time_t  stcRtcDateTime = {0};
+    struct tm *p_tm;
+
+    p_tm = gmtime(&time_stamp);
+    if (p_tm->tm_year < 100)
+    {
+        return -RT_ERROR;
+    }
+
+    stcRtcDateTime.u8Second  = p_tm->tm_sec ;
+    stcRtcDateTime.u8Minute  = p_tm->tm_min ;
+    stcRtcDateTime.u8Hour    = p_tm->tm_hour;
+    stcRtcDateTime.u8Day     = p_tm->tm_mday;
+    stcRtcDateTime.u8Month   = p_tm->tm_mon + 1 ;
+    stcRtcDateTime.u8Year    = p_tm->tm_year - 100;
+    stcRtcDateTime.u8Weekday = p_tm->tm_wday;
+
+    if (Ok != RTC_SetDateTime(RtcDataFormatDec, &stcRtcDateTime, Enable, Enable))
+    {
+        return -RT_ERROR;
+    }
+
+    LOG_D("set rtc time.");
+    return RT_EOK;
+}
+
+static rt_err_t hc32_rtc_init(struct rt_device *dev)
+{
+    stc_rtc_init_t stcRtcInit;
+
+#ifdef BSP_RTC_USING_XTAL32
+    stc_clk_xtal32_cfg_t stcXtal32Cfg;
+    /* Xtal32 config */
+    CLK_Xtal32Cmd(Disable);//stop xtal32
+    stcXtal32Cfg.enDrv = ClkXtal32HighDrv;
+    stcXtal32Cfg.enFilterMode = ClkXtal32FilterModeFull;
+    CLK_Xtal32Config(&stcXtal32Cfg);
+    CLK_Xtal32Cmd(Enable);//startup xtal32
+
+    /* Waiting for XTAL32 stabilization */
+    rt_thread_delay(1000);
+#endif
+
+    /* Reset RTC counter */
+    if (ErrorTimeout == RTC_DeInit())
+    {
+        return -RT_ERROR;
+    }
+    else
+    {
+        /* Configure structure initialization */
+        stcRtcInit.enPeriodInt = RtcPeriodIntOneMin;
+        //stcRtcInit.enTimeFormat = RtcTimeFormat24Hour;
+        stcRtcInit.enCompenWay = RtcOutputCompenDistributed;
+        stcRtcInit.enCompenEn = Disable;
+        stcRtcInit.u16CompenVal = 0u;
+        /* Configuration RTC structure */
+#ifdef BSP_RTC_USING_XTAL32
+        stcRtcInit.enClkSource = RtcClkXtal32;
+#else
+        stcRtcInit.enClkSource = RtcClkLrc;
+#endif
+        stcRtcInit.enTimeFormat  = RtcTimeFormat24Hour;
+        (void)RTC_Init(&stcRtcInit);
+        /* Startup RTC count */
+        RTC_Cmd(Enable);
+    }
+
+    return RT_EOK;
+}
+
+static rt_err_t hc32_rtc_control(rt_device_t dev, int cmd, void *args)
+{
+    rt_err_t result = RT_EOK;
+
+    RT_ASSERT(dev != RT_NULL);
+    switch (cmd)
+    {
+    case RT_DEVICE_CTRL_RTC_GET_TIME:
+        *(rt_uint32_t *)args = hc32_rtc_get_time_stamp();
+        LOG_D("RTC: get rtc_time %x\n", *(rt_uint32_t *)args);
+        break;
+
+    case RT_DEVICE_CTRL_RTC_SET_TIME:
+        if (hc32_rtc_set_time_stamp(*(rt_uint32_t *)args))
+        {
+            result = -RT_ERROR;
+        }
+        LOG_D("RTC: set rtc_time %x\n", *(rt_uint32_t *)args);
+        break;
+    default:
+        return RT_EINVAL;
+    }
+
+    return result;
+}
+
+#ifdef RT_USING_DEVICE_OPS
+const static struct rt_device_ops rtc_ops =
+{
+    RT_NULL,
+    RT_NULL,
+    RT_NULL,
+    RT_NULL,
+    RT_NULL,
+    hc32_rtc_control
+};
+#endif
+
+static rt_err_t rt_hw_rtc_register(rt_device_t device, const char *name, rt_uint32_t flag)
+{
+    RT_ASSERT(device != RT_NULL);
+
+    if (hc32_rtc_init(device) != RT_EOK)
+    {
+        return -RT_ERROR;
+    }
+#ifdef RT_USING_DEVICE_OPS
+    device->ops         = &rtc_ops;
+#else
+    device->init        = RT_NULL;
+    device->open        = RT_NULL;
+    device->close       = RT_NULL;
+    device->read        = RT_NULL;
+    device->write       = RT_NULL;
+    device->control     = hc32_rtc_control;
+#endif
+    device->type        = RT_Device_Class_RTC;
+    device->rx_indicate = RT_NULL;
+    device->tx_complete = RT_NULL;
+    device->user_data   = RT_NULL;
+
+    /* register a character device */
+    return rt_device_register(device, name, flag);
+}
+
+int rt_hw_rtc_init(void)
+{
+    rt_err_t result;
+
+    result = rt_hw_rtc_register(&rtc, "rtc", RT_DEVICE_FLAG_RDWR);
+    if (result != RT_EOK)
+    {
+        LOG_E("rtc register err code: %d", result);
+        return result;
+    }
+    LOG_D("rtc init success");
+    return RT_EOK;
+}
+INIT_DEVICE_EXPORT(rt_hw_rtc_init);
+
+#endif /* BSP_USING_RTC */