81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#include "../main/SystemInclude.h"
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/**
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* @brief 系统时钟初始化函数
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* @note 配置芯片时钟树，使用内部高速时钟(HSI)作为系统时钟源
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*/
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void SystemClockConfiguration(void)
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{
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RCC_ClockInitTypeDef Clock_InitStructure;
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Clock_InitStructure.SYSCLKSource = RCC_SYSCLK_SRC_HSI_DIV2; // SYSCLK = 32M/2 = 16MHz
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Clock_InitStructure.AHBCLKDivider = RCC_SYSCLK_DIV2; // PCLK = SYSCLK/4 = 4MHz
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Clock_InitStructure.APB1CLKDivider = RCC_HCLK_DIV1; // PCLK1 = HCLK
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Clock_InitStructure.APB2CLKDivider = RCC_HCLK_DIV1; // PCKL2 = HCLK
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if (LHL_RCC_ClockConfig(&Clock_InitStructure, LHL_NRM_TIMEOUT) != LHL_OK)
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{
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while(1); // Error Handler
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}
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}
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void System_MCO_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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#if 0 //set p2.2 is MCO
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GPIO_InitStruct.Pin = GPIO_PIN_2;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Current = GPIO_CURRENT_16mA;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.SchmittTrigger = ENABLE;
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GPIO_InitStruct.Alternate = GPIO2_2_AF_ECLKOUT; // AF为
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LHL_GPIO_Init(pGPIO2, &GPIO_InitStruct);
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#endif
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#if 1 //set p0.4 is ECLKOUT
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GPIO_InitStruct.Pin = GPIO_PIN_4;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Current = GPIO_CURRENT_16mA;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.SchmittTrigger = ENABLE;
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GPIO_InitStruct.Alternate = GPIO0_4_AF_ECLKOUT; // AF为
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LHL_GPIO_Init(pGPIO0, &GPIO_InitStruct);
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#endif
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/** RCC_MCOSOURCE_LSI
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* RCC_MCOSOURCE_SYSCLK
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* RCC_MCOSOURCE_HSI
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* RCC_MCOSOURCE_HSE
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* RCC_MCOSOURCE_PLL_DIV2
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* RCC_MCOSOURCE_PCLK1
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* RCC_MCOSOURCE_PCLK2
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* RCC_MCOSOURCE_HCLK */
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LHL_RCC_MCOConfig(RCC_MCOSOURCE_PCLK1);//选择起始时钟源
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}
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void disable_interrupts(void)
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{
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__disable_irq();
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}
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void enable_interrupts(void)
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{
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__enable_irq();
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}
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void ResetSystem(void)
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{
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}
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