add rtc

Power_Pico/Core/Inc/rtc.h

@@ -0,0 +1,52 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    rtc.h
+  * @brief   This file contains all the function prototypes for
+  *          the rtc.c file
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2025 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __RTC_H__
+#define __RTC_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+extern RTC_HandleTypeDef hrtc;
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_RTC_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __RTC_H__ */
+

Power_Pico/Core/Inc/stm32f4xx_hal_conf.h

@@ -58,7 +58,7 @@
 /* #define HAL_IWDG_MODULE_ENABLED */
 /* #define HAL_LTDC_MODULE_ENABLED */
 /* #define HAL_RNG_MODULE_ENABLED */
-/* #define HAL_RTC_MODULE_ENABLED */
+#define HAL_RTC_MODULE_ENABLED
 /* #define HAL_SAI_MODULE_ENABLED */
 /* #define HAL_SD_MODULE_ENABLED */
 /* #define HAL_MMC_MODULE_ENABLED */

Power_Pico/Core/Src/main.c

@@ -22,6 +22,7 @@
 #include "adc.h"
 #include "dma.h"
 #include "i2c.h"
+#include "rtc.h"
 #include "spi.h"
 #include "tim.h"
 #include "usart.h"
@@ -103,6 +104,7 @@ int main(void)
   MX_SPI2_Init();
   MX_I2C1_Init();
   MX_TIM2_Init();
+  MX_RTC_Init();
   /* USER CODE BEGIN 2 */
 
   /* USER CODE END 2 */
@@ -146,9 +148,10 @@ void SystemClock_Config(void)
   /** Initializes the RCC Oscillators according to the specified parameters
   * in the RCC_OscInitTypeDef structure.
   */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
   RCC_OscInitStruct.PLL.PLLM = 8;

Power_Pico/Core/Src/rtc.c

@@ -0,0 +1,105 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    rtc.c
+  * @brief   This file provides code for the configuration
+  *          of the RTC instances.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2025 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Includes ------------------------------------------------------------------*/
+#include "rtc.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+RTC_HandleTypeDef hrtc;
+
+/* RTC init function */
+void MX_RTC_Init(void)
+{
+
+  /* USER CODE BEGIN RTC_Init 0 */
+
+  /* USER CODE END RTC_Init 0 */
+
+  /* USER CODE BEGIN RTC_Init 1 */
+
+  /* USER CODE END RTC_Init 1 */
+
+  /** Initialize RTC Only
+  */
+  hrtc.Instance = RTC;
+  hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
+  hrtc.Init.AsynchPrediv = 127;
+  hrtc.Init.SynchPrediv = 255;
+  hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
+  hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
+  hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
+  if (HAL_RTC_Init(&hrtc) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN RTC_Init 2 */
+
+  /* USER CODE END RTC_Init 2 */
+
+}
+
+void HAL_RTC_MspInit(RTC_HandleTypeDef* rtcHandle)
+{
+
+  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
+  if(rtcHandle->Instance==RTC)
+  {
+  /* USER CODE BEGIN RTC_MspInit 0 */
+
+  /* USER CODE END RTC_MspInit 0 */
+
+  /** Initializes the peripherals clock
+  */
+    PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
+    PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
+    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
+    {
+      Error_Handler();
+    }
+
+    /* RTC clock enable */
+    __HAL_RCC_RTC_ENABLE();
+  /* USER CODE BEGIN RTC_MspInit 1 */
+
+  /* USER CODE END RTC_MspInit 1 */
+  }
+}
+
+void HAL_RTC_MspDeInit(RTC_HandleTypeDef* rtcHandle)
+{
+
+  if(rtcHandle->Instance==RTC)
+  {
+  /* USER CODE BEGIN RTC_MspDeInit 0 */
+
+  /* USER CODE END RTC_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_RTC_DISABLE();
+  /* USER CODE BEGIN RTC_MspDeInit 1 */
+
+  /* USER CODE END RTC_MspDeInit 1 */
+  }
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */