RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
时间: 2024-05-19 13:16:18 浏览: 107
These two lines of code declare two structures, RCC_OscInitTypeDef and RCC_ClkInitTypeDef, and initialize them to zero.
RCC_OscInitTypeDef is used to configure the system clock source and its parameters, such as the PLL (Phase-Locked Loop) multiplication factor, the HSE (High-Speed External) crystal frequency, and the HSI (High-Speed Internal) oscillator frequency.
RCC_ClkInitTypeDef is used to configure the system clock frequency and its peripherals, such as the AHB (Advanced High-Performance Bus) and APB (Advanced Peripheral Bus) buses, and their respective prescalers.
Both structures are used in the initialization of the system clock and its peripherals in embedded systems that use the STM32 microcontroller.
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