大器所成 发表于 2015-1-11 13:02:40

问题求解~~~~~~

static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;

/* Select HSI48 Oscillator as PLL source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48;
RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI48;
RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV2;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct)!= HAL_OK)
{
    Error_Handler();                                                                     /*原函数1 处
}

/* Select PLL as system clock source and configure the HCLK and PCLK1 clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1)!= HAL_OK)
{
    Error_Handler();
}                                                                                             /*原函数2处
}


原函数1:
*/
__weak HAL_StatusTypeDef HAL_RCC_OscConfig(RCC_OscInitTypeDef*RCC_OscInitStruct)
{
/* Note : This function is defined into this file for library reference.*/
/*      Function content is located into file stm32f0xx_hal_rcc_ex.c to */
/*      handle the possible oscillators present in STM32F0xx devices    */

/* Return error status as not implemented here */
return HAL_ERROR;
}

原函数2:
__weak HAL_StatusTypeDef HAL_RCC_ClockConfig(RCC_ClkInitTypeDef*RCC_ClkInitStruct, uint32_t FLatency)
{
/* Note : This function is defined into this file for library reference.*/
/*      Function content is located into file stm32f0xx_hal_rcc_ex.c to */
/*      handle the possible oscillators present in STM32F0xx devices    */

/* Return error status as not implemented here */
return HAL_ERROR;
}

亲爱的大侠们,我在学习STM32F072的HAL库的时候经常遇到上面有颜色的函数,这段函数具体是怎么动作的?请知道的朋友说一下吧!感谢


大器所成 发表于 2015-1-11 13:03:57

是不是在调用函数时,会硬件操作
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