STSW-STLKT01: Projects/SensorTile/Applications/DataLog/Src/cube_hal_l4.c Source File

STSW-STLKT01

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cube_hal_l4.c
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1 
38 /* Includes ------------------------------------------------------------------*/
39 #include "cube_hal.h"
40 
41 static void Error_Handler( void );
42 
48 void SystemClock_Config(void)
49 {
50  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
51  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
52  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
53 
54  __HAL_RCC_PWR_CLK_ENABLE();
55  HAL_PWR_EnableBkUpAccess();
56 
57  /* Enable the LSE Oscilator */
58  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
59  RCC_OscInitStruct.LSEState = RCC_LSE_ON;
60  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
61  {
62  Error_Handler();
63  }
64 
65  /* Enable the CSS interrupt in case LSE signal is corrupted or not present */
66  HAL_RCCEx_DisableLSECSS();
67 
68  /* Enable MSI Oscillator and activate PLL with MSI as source */
69  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
70  RCC_OscInitStruct.MSIState = RCC_MSI_ON;
71  RCC_OscInitStruct.HSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
72  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_11;
73  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
74  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
75  RCC_OscInitStruct.PLL.PLLM = 6;
76  RCC_OscInitStruct.PLL.PLLN = 40;
77  RCC_OscInitStruct.PLL.PLLP = 7;
78  RCC_OscInitStruct.PLL.PLLQ = 4;
79  RCC_OscInitStruct.PLL.PLLR = 4;
80  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
81  {
82  Error_Handler();
83  }
84 
85  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
86  PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
87  if(HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
88  {
89  Error_Handler();
90  }
91 
92  /* Enable MSI Auto-calibration through LSE */
93  HAL_RCCEx_EnableMSIPLLMode();
94 
95  /* Select MSI output as USB clock source */
96  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USB;
97  PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_MSI;
98  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
99 
100  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
101  clocks dividers */
102  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
103  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
104  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
105  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
106  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; //2
107  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
108  {
109  Error_Handler();
110  }
111 }
112 
118 static void Error_Handler( void )
119 {
120  while (1)
121  {}
122 }
123 
124 
125 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
SystemClock_Config
void SystemClock_Config(void)
System Clock Configuration.
Definition: cube_hal_l4.c:48
Error_Handler
static void Error_Handler(void)
This function is executed in case of error occurrence.
Definition: cube_hal_l4.c:118
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