stm32 步進(jìn)電機(jī)換向程序(中斷優(yōu)先級的嵌套和通用定時(shí)器的使用)

1、STM32步進(jìn)電機(jī)換向程序按中斷0，步進(jìn)電機(jī)反向運(yùn)轉(zhuǎn)。串口調(diào)試助手中出現(xiàn)“ItisEXIT0IRQHlerenter.”采用三個(gè)定時(shí)器，TIM2，4輸出脈沖。TIM3控制相位差。#include“stm32f10x_lib.h“#include“stdio.h“#include“time.h“#include“pwm.h“voidRCC_Configuration(void)voidGPIO_Configuration(void)voi

2、dNVIC_Configuration(void)voidEXIT_Configuration(void)voidUSART_Configuration(void)intmain(void)RCC_Configuration()函數(shù)略去NVIC_Configuration()GPIO_Configuration()USART_Configuration()EXIT_Configuration()TIM3_NVIC_Configurati

3、on()TIM3_Configuration()TIM4_PWM_Init()TIM2_PWM_Init()TIM_Cmd(TIM4ENABLE)START_TIMEwhile(1):NVIC_ConfigurationvoidNVIC_Configuration(void)NVIC_InitTypeDefNVIC_InitStructure#ifdef...#else...#endif#ifdefVECT_TAB_RAMNVIC_Se

4、tVectTable(NVIC_VectTab_RAM0x0)#elseVECT_TAB_FLASHNVIC_SetVectTable(NVIC_VectTab_FLASH0x0)#endif選擇NVIC優(yōu)先級分組2NVIC_PriityGroupConfig(NVIC_PriityGroup_2)使能EXIT0通道，0級先占優(yōu)先級，0級次占優(yōu)先級NVIC_InitStructure.NVIC_IRQChannel=EXTI0_IRQC

5、hannelNVIC_InitStructure.NVIC_IRQChannelPreemptionPriity=0NVIC_InitStructure.NVIC_IRQChannelSubPriity=0NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLENVIC_Init(voidEXIT_Configuration(void)EXTI_InitTypeDefEXTI_InitStructure外

6、部中斷0通道、1通道（EXITLine0）在下降沿時(shí)觸發(fā)中斷EXTI_InitStructure.EXTI_Line=EXTI_Line0|EXTI_Line1EXTI_InitStructure.EXTI_Mode=EXTI_Mode_InterruptEXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_FallingEXTI_InitStructure.EXTI_LineCmd=ENABLEEX