STM32F103的HAL库下，配置内部时钟到64MHz

void SystemClock_Config(void) {   RCC_OscInitTypeDef RCC_OscInitStruct = {0};   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};ide   /** Initializes the CPU, AHB and APB busses clocks    */   RCC_OscInitS

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