[bsp][stm32] Implement stm32 rtc driver to RTC framework V2.0

Author: iysheng

bsp/stm32/libraries/HAL_Drivers/drv_rtc.c

@@ -8,6 +8,7 @@
  * 2018-12-04   balanceTWK    first version
  * 2020-10-14   Dozingfiretruck Porting for stm32wbxx
  * 2021-02-05   Meco Man      fix the problem of mixing local time and UTC time
+ * 2021-07-05   iysheng       implement RTC framework V2.0
  */
 
 #include "board.h"
@@ -25,8 +26,6 @@
 
 #define BKUP_REG_DATA 0xA5A5
 
-static struct rt_device rtc;
-
 static RTC_HandleTypeDef RTC_Handler;
 
 RT_WEAK uint32_t HAL_RTCEx_BKUPRead(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister)
@@ -102,34 +101,6 @@ static rt_err_t set_rtc_time_stamp(time_t time_stamp)
     return RT_EOK;
 }
 
-static void rt_rtc_init(void)
-{
-#if !defined(SOC_SERIES_STM32H7) && !defined(SOC_SERIES_STM32WL) && !defined(SOC_SERIES_STM32WB)
-    __HAL_RCC_PWR_CLK_ENABLE();
-#endif
-
-    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
-#ifdef BSP_RTC_USING_LSI
-#ifdef SOC_SERIES_STM32WB
-RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI1;
-    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
-    RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
-    RCC_OscInitStruct.LSIState = RCC_LSI_ON;
-#else
-    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
-    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
-    RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
-    RCC_OscInitStruct.LSIState = RCC_LSI_ON;
-#endif
-#else
-    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
-    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
-    RCC_OscInitStruct.LSEState = RCC_LSE_ON;
-    RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
-#endif
-    HAL_RCC_OscConfig(&RCC_OscInitStruct);
-}
-
 #ifdef SOC_SERIES_STM32F1
 /* update RTC_BKP_DRx*/
 static void rt_rtc_f1_bkp_update(void)
@@ -160,7 +131,7 @@ static void rt_rtc_f1_bkp_update(void)
 }
 #endif
 
-static rt_err_t rt_rtc_config(struct rt_device *dev)
+static rt_err_t rt_rtc_config(void)
 {
     RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
 
@@ -234,81 +205,90 @@ static rt_err_t rt_rtc_config(struct rt_device *dev)
     return RT_EOK;
 }
 
-static rt_err_t rt_rtc_control(rt_device_t dev, int cmd, void *args)
+static rt_err_t stm32_rtc_init(void)
 {
-    rt_err_t result = RT_EOK;
-    RT_ASSERT(dev != RT_NULL);
-    switch (cmd)
+#if !defined(SOC_SERIES_STM32H7) && !defined(SOC_SERIES_STM32WL) && !defined(SOC_SERIES_STM32WB)
+    __HAL_RCC_PWR_CLK_ENABLE();
+#endif
+
+    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+#ifdef BSP_RTC_USING_LSI
+#ifdef SOC_SERIES_STM32WB
+RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI1;
+    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+    RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
+    RCC_OscInitStruct.LSIState = RCC_LSI_ON;
+#else
+    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
+    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+    RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
+    RCC_OscInitStruct.LSIState = RCC_LSI_ON;
+#endif
+#else
+    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
+    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+    RCC_OscInitStruct.LSEState = RCC_LSE_ON;
+    RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
+#endif
+    HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+    if (rt_rtc_config() != RT_EOK)
     {
-    case RT_DEVICE_CTRL_RTC_GET_TIME:
-        *(rt_uint32_t *)args = get_rtc_timestamp();
-        LOG_D("RTC: get rtc_time %x\n", *(rt_uint32_t *)args);
-        break;
+        LOG_E("rtc init failed.");
+        return -RT_ERROR;
+    }
 
-    case RT_DEVICE_CTRL_RTC_SET_TIME:
-        if (set_rtc_time_stamp(*(rt_uint32_t *)args))
-        {
-            result = -RT_ERROR;
-        }
-        LOG_D("RTC: set rtc_time %x\n", *(rt_uint32_t *)args);
-        break;
+    return RT_EOK;
+}
+
+static rt_err_t stm32_rtc_get_secs(void *args)
+{
+    *(rt_uint32_t *)args = get_rtc_timestamp();
+    LOG_D("RTC: get rtc_time %x\n", *(rt_uint32_t *)args);
+
+    return RT_EOK;
+}
+
+static rt_err_t stm32_rtc_set_secs(void *args)
+{
+    rt_err_t result = RT_EOK;
+
+    if (set_rtc_time_stamp(*(rt_uint32_t *)args))
+    {
+        result = -RT_ERROR;
     }
+    LOG_D("RTC: set rtc_time %x\n", *(rt_uint32_t *)args);
 
     return result;
 }
 
-#ifdef RT_USING_DEVICE_OPS
-const static struct rt_device_ops rtc_ops =
+static const struct rt_rtc_ops stm32_rtc_ops =
 {
+    stm32_rtc_init,
+    stm32_rtc_get_secs, /* get_secs */
+    stm32_rtc_set_secs, /* set secs */
     RT_NULL,
     RT_NULL,
     RT_NULL,
     RT_NULL,
-    RT_NULL,
-    rt_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);
+static rt_rtc_dev_t stm32_rtc_dev;
 
-    rt_rtc_init();
-    if (rt_rtc_config(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     = rt_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)
+static int rt_hw_rtc_init(void)
 {
     rt_err_t result;
-    result = rt_hw_rtc_register(&rtc, "rtc", RT_DEVICE_FLAG_RDWR);
+
+    stm32_rtc_dev.ops = &stm32_rtc_ops;
+    result = rt_rtc_dev_register(&stm32_rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR, RT_NULL);
     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_ONCHIP_RTC */