１.使能SYSSＣFG和相應(yīng)ＧPIO時(shí)鐘?RCC_AＰＢ2PeｒｉpｈClｏckＣmd(RCC_APB２Periph_SYＳCＦG,ENABLE);

RCC_ＡHB1ＰeｒiｐhClockCmd(ＲＣC＿AHB1Peripｈ_GPIOx，ENABLE);

2．配置相應(yīng)GＰIＯ為輸入模式?GPIO＿InｉｔStｒuｃturｅ.ＧPＩO_Mode=GＰIＯ_Mｏde_ＩＮ;

GＰIＯ_InitSｔrｕcｔurｅ.GPIO＿PuPd＝GPIＯ_PｕＰd_NOPULＬ;?GＰＩO＿InitStructure．GＰIO_Pin＝ＧPＩO_Piｎ_x;?GPIO_Iniｔ(GＰIＯx(chóng),＆GPIＯ_ＩnitＳtructuｒe);??3.配置相應(yīng)GPIO為EXIT線

SYＳＣFG_ＥXTＩＬineConfig（EXＴI_PoｒtSouｒceGPIOx,EXＴI_PｉｎSourｃｅx);?４.配置ＥＸIＴ的工作參數(shù)?EＸTＩ_InitStrucｔｕｒe.EXTI_Line=EXTI_Linex;

EＸTＩ_InitStrucｔｕre.ＥXTI_Ｍｏｄｅ=EXTI＿M(jìn)odｅ_Interrupｔ;//中斷,ＥXTI_Modｅ_Event為事件

EＸTＩ_InitSｔｒucture.EXTI_Tｒiggｅr=ＥXTI_Tｒigger＿Ｆaｌling；//下降沿，EXTI_Trｉggｅｒ＿Rｉｓｉｎg為上升沿，EXTI_Trigｇeｒ_Risiｎg＿Fａllinｇ雙跳邊沿

ＥXTI_InｉtＳｔｒucture．EＸＴI_LinｅＣmｄ=ENAＢLＥ；?EＸTI_Init(&EXTＩ＿IｎitSｔｒｕctuｒｅ）;?

5.配置NVIC中的EXＴI中斷線?NVIC_InｉtSｔrｕctｕrｅ.NVIＣ_IRＱChannel＝EＸＴIx＿IRQｎ;?NＶＩC_IｎiｔStrｕctｕre.NVＩC_ＩRQCｈaｎnelＰｒeeｍptionPrioｒitｙ＝xｘ；

NVIC＿ＩnｉtSｔructｕre.NVIＣ_ＩRQCｈaｎneｌＳubPｒｉorｉｔy=xx;

ＮＶIC_InitStructure.NVIC_ＩＲQChａnnelCｍｄ＝ＥＮABLE;

NVIC_Ｉｎit(&NVIＣ_IniｔStructure）;?????程序舉例：??ｉｎtmaiｎ(void)?{?ＧPIO＿InitTypeＤeｆＧＰＩO_ＩniｔStructure;?EXTI_InitTｙｐeDefEXTI_IｎitＳｔructure;

NＶIC＿ＩniｔTypeＤefNＶIC_InｉtStruｃture;

RCＣ_AHB１P(pán)eriphＣloｃkCmｄ(RCC＿AHＢ１Ｐeripｈ＿GPIＯA,ENABLE）;

RＣC_ＡHＢ1PｅrｉphClocｋCｍd(RCC_AHB1Peｒiph_GPIOC，EＮABLＥ);?RCＣ_AHB1PeripｈClockCmd(RCC＿AHB１P(pán)eriph_GPＩOF,ENＡBLＥ);?RCC_APB2PeriphCloｃｋCｍd(RCC＿APB２Perｉph_ＳYSCFG,ＥNＡＢLＥ);

GPIＯ_InｉtＳtruｃｔｕre.ＧPIO_Pｉn＝GPＩO＿Pin_7｜GPＩO_Pｉｎ＿8;／/ｌed?GＰＩO_ＩnitStructuｒe.GPIO_Mｏde=GPIO＿M(jìn)odｅ_ＯUT；

ＧPIＯ_ＩnitStｒuctｕre.GＰIO_ＯTypｅ=GPIO_OTyｐe_PP；

GＰIO＿InｉｔStructｕrｅ.GＰIＯ＿Ｓpeｅd=ＧPIO_Speeｄ_100MHz;?GＰIＯ＿InitStrｕcture.GPＩO_ＰuPd＝GPＩＯ_PuPd_NOPULL;?GPIO_Iｎｉt(GPIＯF，&GＰＩO_InitStruｃture);?

?GＰIO_InｉtＳtructure.ＧＰIO＿Ｍode=GPＩO＿M(jìn)ode_IN;?GPIＯ＿ＩniｔSｔructurｅ.ＧPIO_PuＰｄ=GPIO_ＰuPd＿NＯPULL;

GＰIO_InitStｒｕcturｅ.GPIO_Pｉn=ＧPIO_Ｐiｎ_０|GPIO_Ｐin＿5;?GPIＯ_Init（ＧPIOＡ,&GPＩO_ＩniｔStructure);?GＰＩO_ＩnｉtSｔructｕre.GPIO_Pin＝GPIO_Pin_13；?GＰIO_Inｉｔ(GPIＯC,&ＧPIO_ＩniｔSｔructure);?GPIO＿InitSｔrｕｃturｅ.GＰIＯ_Ｐin=GＰIＯ_Piｎ_1１;?ＧPIＯ_Inｉt(GPＩOF,&GPIO_InitＳtructurｅ);?

ＳYSCFG＿EXTＩLｉneCｏnfig(EXTＩ_PoｒtSｏｕrceGPIOA,EXTＩ_PｉnSｏurce0)；?EXＴI_InitＳtｒucｔure.ＥXＴＩ_Line=EXTI_Ｌinｅ0;?ＥXＴI_IｎitSｔrｕctｕre.EXＴＩ_Ｍode=ＥXTI_Modｅ_Iｎtｅrrupt;?EＸTＩ_ＩｎiｔStruｃture.EXTI＿Ｔｒiggeｒ=EXTＩ＿Ｔrigger_Ｆaｌliｎg;

EＸＴＩ_InitＳtrｕｃtｕre.ＥＸＴI_LｉneCｍd＝ENABLE;

ＥXTI_Inｉt(&ＥXTI＿InitStructure);

??NVIＣ_ＩniｔＳｔruｃture.NＶIC_ＩRQChaｎｎeｌ=EＸＴＩ０_IRQn;

ＮVＩＣ_InitSｔrｕcture．NVIC_ＩRQChannｅｌＰreｅmｐtｉoｎPｒiｏrity=0ｘ0F;//優(yōu)先級(jí)最低

NVIC＿InitStrｕcｔｕrｅ.NVIC_IＲQCｈaｎnelSubPrｉority=0x0F;

ＮVIC_InitStrｕcｔure.NVIC_ＩRQChａｎnｅlCmd＝ENABLE;

ＮＶIＣ_Init(＆ＮVIC_InｉtStructure）;?

?SＹSCFＧ_EＸTILineCｏnｆｉg（EＸTＩ＿PorｔSｏｕrｃeGＰIOA,EXTＩ_ＰinSouｒce5);?EXTI_IｎitSｔructｕｒe.EXＴI＿Liｎe=EＸTＩ＿Liｎe5;?EXTＩ＿InitＳtｒuctuｒe.EXTI＿M(jìn)ode＝ＥXＴＩ_Ｍoｄe_Interruｐｔ;

EＸTＩ_ＩnitStructurｅ.EＸTI＿Ｔriｇgeｒ=ＥXTI＿Tｒｉggｅr＿Falｌiｎg;

EXＴＩ_InitSｔructure.EＸTＩ_LineCｍd＝ＥNABＬE;?EXＴI_Init(＆EＸTI_ＩniｔＳtruｃtｕｒe);

NVIC＿IniｔStrucｔurｅ.NVIＣ_IRＱChａnｎel=EＸTI９_5_IRＱn;

NＶIC_InｉtStrｕcｔure．NVIC_ＩRQChannelPreｅmｐtionPｒｉoriｔy=0x0F;/／優(yōu)先級(jí)最低?NＶIＣ_InitStructｕrｅ．NVIＣ_IRQＣhannelSｕbPrｉorｉty＝0ｘ0F;

NVIC_InitStructuｒe．NVIC_ＩRQChannelＣmd=ENABLＥ；?NVIC_Init(&NVIC＿InitStructure);

?SＹSCFG_ＥXＴILinｅCｏnfig(EXTＩ_PortSourｃeGＰＩＯF,EXＴI_ＰinＳourｃe１1）;

EXＴI_ＩnitStructｕre.EＸTI_Lｉｎｅ=ＥＸTI_Lｉne１１;?EXTＩ_ＩｎitStructｕre.EXTI_Mｏde=EXＴＩ_Ｍoｄe_Inｔｅrrｕpt;?ＥXTI_InｉｔStrｕctuｒe.EXＴI_Ｔrigｇeｒ＝EXＴＩ_Trigｇer_Fallｉｎg;?EXTＩ_IniｔStructurｅ.EXTI_ＬiｎeCmd=ENABＬＥ;?EXTI_Inｉt（&ＥXTI_InitStruｃｔｕrｅ)；?

?ＮVＩC_ＩniｔStｒucｔｕre.ＮＶIC＿ＩRQChanｎｅl＝ＥXTI15_10_ＩＲＱn；?NＶIＣ_InitＳtrucｔｕre．NVIＣ＿ＩＲＱChａnnelPｒｅe(cuò)mptｉonPriｏrｉｔy=0ｘ0F;//優(yōu)先級(jí)最低?ＮVIC＿InitStrucｔurｅ.NVIC＿IRQCｈａnｎｅlSuｂＰｒiorｉty=0x0F;?NVＩＣ＿IｎitStructuｒe.NVIC_IRQChanneｌCmd＝ＥNＡBＬE;

ＮVＩC_Init(&NVＩC＿InitＳｔｒuｃturｅ)；

?

SYSＣFG＿EＸTＩLiｎeCｏnｆig（EXＴI＿PｏｒtSoｕrceＧＰＩOC,ＥXTI_PinSouｒce13);

EＸＴI_IｎｉtStructｕre.ＥXTI_Lｉnｅ＝EXTI_Ｌine１3;?EXTＩ_InitStrucｔure.EＸTI＿M(jìn)ode=ＥＸTI_Ｍode_Interrupt;?EXTI＿InitStruｃtuｒe．ＥXTI_Tｒiｇｇer=EＸTI_Tｒiｇger_Ｆａlling；?ＥＸTI_ＩｎitSｔｒucture.ＥＸＴI_LｉneCmｄ=ENABLE；

ＥＸTI_Inｉt(&EXTI_IｎitSｔructurｅ);

?ＮVIC＿ＩnｉtStrｕcturｅ.ＮＶIC_ＩRQChannel=ＥXTI15＿10＿IRＱn;

NVIＣ_ＩniｔSｔruｃtuｒe.ＮＶIC_IＲQChaｎneｌPrｅe(cuò)mptionPriority=0x0Ｆ;/／優(yōu)先級(jí)最低

ＮVＩC_ＩｎitStrｕcturｅ.NVＩC_IRQChaｎnelSｕbPriorｉty＝0x0F;

NVIＣ＿IｎiｔStructuｒe.ＮVIC_IRQCｈａｎｎelCmｄ=ENABＬE；?ＮVIC_Init(&NVＩＣ_ＩniｔＳtrｕctｕre);?

ＧＰＩＯ_SetBiｔs(GPIＯF，GPIO_Pin_7|GＰIＯ＿Ｐｉn＿9);

GPIO_SetBits（GPIOF,ＧPIO_Ｐｉn_8|GPIO_Pin＿1０);?

while(1)

{

}

}

??

?voidEXTＩ0_IRQHanｄｌｅr(void)?{

iｆ(EＸTI_GetITStａt(yī)us(EXTI＿Linｅ0)!=RESET)

{

/*ToｇgleLＥＤ１＊/

ＧPIO_ReｓeｔBits(GPIOF,GPIO_Piｎ＿８）;

/＊CｌeartheEＸTＩｌinｅ0ｐｅndｉnｇbit＊／

EXＴI_ClｅａrIＴＰeｎdｉnｇBiｔ(EＸＴI＿Lｉnｅ０);

}?｝

?vｏｉdEＸTI9＿5_ＩＲQHandleｒ（voｉｄ)?{

if(EXＴI_GetITStatus（EXＴI_Ｌine5）！=RESEＴ）?{

/*ToggleLED1*/

GＰIO＿SeｔBiｔs(GPIＯＦ,GＰIO_Pin＿8);

/＊ＣｌeartheEXTIlｉne0pendingbit*/

EXTＩ＿ClearIＴＰeｎdingBit（EXＴI_Line５);?}

}

?voidEXTＩ15_10_IＲQHanｄlｅr(voiｄ)

{

ｉf(EXTI＿ＧetIＴSｔatus(EXTI_Linｅ11)!=RＥＳET)?{?/*TｏggleＬＥD2*／

ＧＰIO_RｅsetBits(ＧPIＯＦ,GPＩO_Piｎ_