/*---------------------------------------------------------------------------------- LPCARMÖжϷǵ䷽·¨´óȫʥµ®Âã±¼³ÌÐòÏê½â(¸üÐÂ) ÑãËþ²ËÅ©HotPower 2006.12.25 ¸üÐÂÓÚ²ËµØ Http://HotPower.21ic.org/----------------------------------------------------------------------------------*/ ££i nclude //ARM²ËÄñHotPower´´½¨¶¨ÒåÎļþ(×îÐÂΪµ¹Ëú°æ) /*--------------------------------------------------------------------------------- ×¢Ò⣺ LPC213XDEF.HÎļþÇëÔÚuser1/46/archives/2006/16994.htmlÏÂÔØ ¿É½«LPC213XDEF.H¿½±´µ½Keil\ARM\INC\PHILIPSĿ¼ÏÂ
void __swi(0) Enable_IRQ(void); void __SWI_0 (void) { int tmp; __asm { MRS tmp, SPSR BIC tmp, tmp, #0x80 MSR SPSR_c, tmp } }
void __swi(1) Disable_IRQ(void); void __SWI_1 (void) { int tmp; __asm { MRS tmp, SPSR ORR tmp, tmp, #0x80 MSR SPSR_c, tmp } }
void __swi(2) Enable_FIQ(void); void __SWI_2 (void) { int tmp; __asm { MRS tmp, SPSR BIC tmp, tmp, #0x40 MSR SPSR_c, tmp } }
void __swi(3) Disable_FIQ(void); void __SWI_3 (void) { int tmp; __asm { MRS tmp, SPSR ORR tmp, tmp, #0x40 MSR SPSR_c, tmp } }
void __swi(4) Enable_VIC(void); void __SWI_4 (void) { VIC->Protection = 0;//¿ª·Å¶ÔVICµÄдÈë±£»¤ }
/*------------------------------------------------------------- SWIÖжϺÍVICSoftIntÈí¼þÖжϵÄÇø±ðÖ®´¦
ÓÉÓÚVIC->Protection¿ÉÒÔÔÚÈκμ¶±ðËæÒâÖÃ'1'£¬¼´¹Ø±Õ ¶ÔVICµÄдÈ룬¹Êû±ØÒª¹¹ÔìDisable_VIC(); ÒÔϺ¯ÊýSetVICProtection()Ö»ÊÇ˵Ã÷SWIÖжϺÍVICSoftIntÈí¼þ ÖжϵÄÇø±ð£¬¼´Ç°ÕßÊôÓÚ·ÇÆÁ±ÎÖжϣ¬ÇÒ¿É´ø²ÎÊýºÍ·µ»ØÖµ¡£ ¶øºóÕߺÍÊôÓÚ¿ÉÆÁ±ÎÖжϣ¬ÓëVICÖжÏÒ»Ñù£¬ÎÞ²ÎÊýºÍ·µ»ØÖµ¡£ µ«VICSoftIntÈí¼þÖжÏÓбðÓÚÄ£¿éµÄVICÖжϡ£Ëü¿É×Ô×éÖжϣ¬Ò²¿É Ä£Äâϵͳģ¿éÖжϡ£ Á½Õß¶¼ºÜÁé»î£¬µ«ÓÃ;ºÍ·½·¨ÓкܴóµÄ²îÒì¡£ SWIÖжϸĽøµÄ×¢½â¼ûSWI.sºÍSWI_Table.s.·ñÔò²»ÄÜÕýÈ·¿ª¹ØFIQ/IRQ --------------------------------------------------------------*/ unsigned int __swi(5) SetVICProtection(unsigned int val); unsigned int __SWI_5 (unsigned int val) { VIC->Protection = val;//VIC->Protection¿ÉÒÔËæÒâÖÃ'1',µ«Çå'0'±ØÐëÔÚ¹ÜÀíģʽÏ return VIC->Protection; }
extern void FIQ_EINT0 (void) __irq { VIC->SoftIntClr = (1 << VICIntSel_EINT0);//ÔöÇ¿°²È«ÐÔ INTCON->EXT_INT = (1 << EINT0); //Çå³ýINT0ÖжϱêÖ¾ VIC->VectAddr = 0; }
void IRQ_EINT1 (void) __irq { VIC->SoftIntClr = (1 << VICIntSel_EINT1);;//ÔöÇ¿°²È«ÐÔ while(INTCON->EXT_INT & (1 << EINT1)) {//µÈ´ýP0_3ºÍP0_14¶¼Îª¸ßµçƽ INTCON->EXT_INT = (1 << EINT1);//Çå³ýINT1ÖжϱêÖ¾(µçƽ´¥·¢±ØÐë¶ÁºóÇå³ý!!!) } VIC->VectAddr = 0; }
void IRQ_SOFT (void) __irq { VIC->SoftIntClr = (1 << VICIntSel_SoftInt22);//Çå³ýÓû§Èí¼þÖжϱêÖ¾ VIC->VectAddr = 0; }
void IRQ_Default (void) __irq { switch(VIC->IRQStatus) { case (1 << VICIntSel_EINT0)://À¹½Ø·Ç·¨INT0ÖÐ¶Ï INTCON->EXT_INT = (1 << EINT0);//Çå³ý·Ç·¨INT0ÖжϱêÖ¾ VIC->SoftIntClr = (1 << VICIntSel_EINT0);//Çå³ý·Ç·¨INT0Èí¼þÖжϱêÖ¾ break; case (1 << VICIntSel_EINT1)://À¹½Ø·Ç·¨INT1ÖÐ¶Ï INTCON->EXT_INT = (1 << EINT1);//Çå³ý·Ç·¨INT1ÖжϱêÖ¾ VIC->SoftIntClr = (1 << VICIntSel_EINT1);//Çå³ý·Ç·¨INT1Èí¼þÖжϱêÖ¾ break; case (1 << VICIntSel_EINT2)://À¹½Ø·Ç·¨INT2ÖÐ¶Ï INTCON->EXT_INT = (1 << EINT2);//Çå³ý·Ç·¨INT2ÖжϱêÖ¾ VIC->SoftIntClr = (1 << VICIntSel_EINT2);//Çå³ý·Ç·¨INT2Èí¼þÖжϱêÖ¾ break; case (1 << VICIntSel_EINT3)://À¹½Ø·Ç·¨INT3ÖÐ¶Ï INTCON->EXT_INT = (1 << EINT3);//Çå³ý·Ç·¨INT2ÖжϱêÖ¾ VIC->SoftIntClr = (1 << VICIntSel_EINT3);//Çå³ý·Ç·¨INT3Èí¼þÖжϱêÖ¾ break; case (1 << VICIntSel_SoftInt23)://À¹½Ø·Ç·¨Óû§Èí¼þÖжÏVICIntSel_SoftInt23 VIC->SoftIntClr = (1 << VICIntSel_SoftInt23);//Çå³ý·Ç·¨Óû§Èí¼þÖжϱêÖ¾ break; case (1 << VICIntSel_SoftInt24)://À¹½Ø·Ç·¨Óû§Èí¼þÖжÏVICIntSel_SoftInt24 VIC->SoftIntClr = (1 << VICIntSel_SoftInt24);//Çå³ý·Ç·¨Óû§Èí¼þÖжϱêÖ¾ break; case (1 << VICIntSel_SoftInt25)://À¹½Ø·Ç·¨Óû§Èí¼þÖжÏVICIntSel_SoftInt25 VIC->SoftIntClr = (1 << VICIntSel_SoftInt25);//Çå³ý·Ç·¨Óû§Èí¼þÖжϱêÖ¾ break; case (1 << VICIntSel_SoftInt26)://À¹½Ø·Ç·¨Óû§Èí¼þÖжÏVICIntSel_SoftInt26 VIC->SoftIntClr = (1 << VICIntSel_SoftInt26);//Çå³ý·Ç·¨Óû§Èí¼þÖжϱêÖ¾ break; default: VIC->SoftIntClr = 0xffffff;//Çå³ýËùÓзǷ¨Óû§Èí¼þÖжϱêÖ¾ } VIC->VectAddr = 0; }
int main(void) { unsigned int i;
Disable_IRQ();//¹Ø±ÕÏòÁ¿ÖжÏ×Ü¿ª¹Ø Disable_FIQ();//¹Ø±Õ¿ìËÙÖжÏ×Ü¿ª¹Ø
VIC->IntEnable = 0;//¹Ø±ÕÈ«²¿ÖÐ¶Ï VIC->SoftIntClr = 0xffffffff;//Çå³ýËùÓÐÈíÖжϱêÖ¾ VIC->IntSelect = 0;//È«²¿ÖжÏΪIRQÖжϻòĬÈÏÖжÏ
PINSEL->PIN_SEL0 = 0x00000000;//ÉèÖùܽÅÁ¬½ÓGPIO PINSEL->PIN_SEL1 = 0x00000000;//ÉèÖùܽÅÁ¬½ÓGPIO P0->IODIR = 0x00000000;//ÉèÖÃP0¿ÚΪÊäÈë P1->IODIR = 0x00000000;//ÉèÖÃP1¿ÚΪÊäÈë
PINSEL->PIN_SEL0 |= (P0_1_EINT0 << P0_1_PINSEL); //Ñ¡ÔñP0.1ΪINT0ÍⲿÖжÏÒý½Å PINSEL->PIN_SEL1 |= (P0_16_EINT0 << P0_16_PINSEL); //Ñ¡ÔñP0.16Ò²¿ÉΪINT0ÍⲿÖжÏÒý½Å
PINSEL->PIN_SEL0 |= (P0_3_EINT1 << P0_3_PINSEL); //Ñ¡ÔñP0.3ΪINT1ÍⲿÖжÏÒý½Å PINSEL->PIN_SEL0 |= (P0_14_EINT1 << P0_14_PINSEL); //Ñ¡ÔñP0.14Ò²¿ÉΪINT1ÍⲿÖжÏÒý½Å
INTCON->EXT_POLAR = ~(1 << EXTPOLAR0); //INT0ΪµÍµçƽÓÐЧ
INTCON->EXT_POLAR &= ~(1 << EXTPOLAR1); //INT1ΪµÍµçƽÓÐЧ
INTCON->EXT_MODE = (1 << EXTMODE0); //ÉèÖÃINT0Ϊ±ßÑØ´¥·¢
INTCON->EXT_MODE &= ~(1 << EXTMODE1); //ÉèÖÃINT1Ϊµçƽ´¥·¢
/*------------------------------------------------------------------------------------------- FIQÖжϺÍIRQÖжϵÄÇø±ðÖ®´¦ FIQÖжϺÍIRQÖж϶¼ÊôÓÚ¿ÉÆÁ±ÎÖжϣ¬ËûÃÇ·Ö±ðÊÜCPSRµÄFºÍIλµÄ¿ØÖÆ¡£
ǰÕß²»Ðè¶ÔVIC->VectAddrsºÍVIC->VectCntls½øÐÐÉèÖ㬵«ÒªÏëÕýÈ·µØ ÖжÏÒª×ö¼¸²½¹¤×÷£º 1. VIC->IntSelect = (1 << VICIntSel_EINT0); //ÉèÖÃEINT0ΪFIQÖÐ¶Ï 2. VIC->IntEnable |= (1 << VICIntSel_EINT0); //ʹÄÜEINT0ÖÐ¶Ï 3. ½¨Á¢FIQÖжϺ¯ÊýFIQ_EINT0(). ×¢ÒâÒªÉùÃ÷ΪÍⲿµÄ¼´extern void FIQ_EINT0 (void) __irq 4. ¸ÄдStartup.SµÄÄÚÈÝ¡££¨¸ÄдºóµÄ×¢½â¼ûStartup.S£©
ºóÕßÐè¶ÔVIC->VectAddrsºÍVIC->VectCntls½øÐÐÉèÖ᣷½·¨£º 1. VIC->IntSelect &= ~(1 << VICIntSel_EINT1); //ÉèÖÃEINT1ΪIRQÖÐ¶Ï 2. VIC->VectCntls[0] = VICIntSel_Enable | VICIntSel_EINT1;//ÉèÖÃÍⲿÖжÏ1·ÖÅäVIC×î¸ßÓÅÏȼ¶ IRQ_EINT1;//ÉèÖÃÖжϷþÎñ³ÌÐòµØÖ·¼ûStartup_Table.S VIC->IntEnable |= (1 << VICIntSel_EINT1); //ʹÄÜEINT1ÖÐ¶Ï 3. ½¨Á¢IRQÖжϺ¯ÊýIRQ_EINT1(). ×¢ÒâÒªÉùÃ÷ΪÄÚ²¿µÄ¼´void IRQ_EINT1 (void) __irq 4. ±ØÐë¸ÄдStartup.SµÄÄÚÈÝ¡£ 5. µ±VICÖжÏÏòÁ¿µØÖ·Î´¶¨Òå»ò³¬³öVIC->VectAddrs[15]ʱ£¬Ê¹ÓÃĬÈÏÖжÏÏòÁ¿VIC->DefVectAddr ÏòÁ¿(Êý×é)ÏòÁ¿ÓëĬÈÏÖжÏÏòÁ¿×î´óµÄ²»Í¬ÔÚÓÚÿ¸öÏòÁ¿Öж϶¼ÓÐ1¸öÖжϵØÖ·£¬¶øÄ¬ÈÏÖжÏÏòÁ¿ Ö»Õ¼ÓÃ1¸ö¹«¹²µÄÖжϵØÖ·µ«¿É°üº¬¶à¸öÖжÏÔ´¡£¹ÊĬÈÏÖжÏÏòÁ¿±ØÐëÅбðÊÇij¸ö¾ßÌåµÄÖжÏÔ´¡£ ËùÒÔÒ²¿ÉÒÔÈÏΪĬÈÏÖжÏÏòÁ¿ÊǵÚ17¸öÖжÏÏòÁ¿¡£ ÌØ±ð×¢Òâ·ÇµäµÄĬÈÏÖжÏÏòÁ¿ÄÚ²»ÊÇÖжϵĵØÖ·¶øÊÇÐòºÅ16~31. 6. ·ÇµäÓë¾µäµÄ×î´ó²»Í¬ÔÚÓÚǰÕßµÄVIC->VectAddrs[x]ÄÚ²»ÊǵØÖ·¶øÊÇÏòÁ¿Êý×éµÄÐòºÅ¡£ ·ÇµäµÄÖжÏÏòÁ¿µØÖ·ÐèÒªÔÚStartup_Table.s¼´FLASHÄÚÉèÖᣠ¶ø¾µäµÄÖжÏÏòÁ¿µØÖ·ÐèÒªÔÚVIC->VectAddrs[x]»òVIC->DefVectAddr¼´RAMÄÚÉèÖÃÕæÕýµÄÖжÏÏòÁ¿µØÖ·¡£ --------------------------------------------------------------------------------------------*/
VIC->IntSelect = (1 << VICIntSel_EINT0); //ÉèÖÃEINT0ΪFIQÖжÏ
VIC->VectCntls[0] = VICIntSel_Enable | VICIntSel_EINT1;//ÉèÖÃÍⲿÖжÏ1·ÖÅäVIC×î¸ßÓÅÏȼ¶ ; VIC->VectAddrs[0] = (unsigned int)IRQ_EINT1;//ÉèÖÃÖжϷþÎñ³ÌÐòµØÖ· VIC->IntEnable |= (1 << VICIntSel_EINT1);//ʹÄÜÍⲿÖжÏ1
VIC->VectCntls[1] = VICIntSel_Enable | VICIntSel_SoftInt22;//ÉèÖÃÓû§Èí¼þÖÐ¶Ï ; VIC->VectAddrs[1] = (unsigned int)IRQ_SOFT;//ÉèÖÃÓû§Èí¼þÖжϷþÎñ³ÌÐòµØÖ· VIC->IntEnable |= (1 << VICIntSel_SoftInt22);//ʹÄÜÓû§Èí¼þÖжÏ
VIC->DefVectAddr = (unsigned int)31;//16~31¶¼¿É//¶¨Òå³ýVIC->VectAddrs[0]~VIC->VectAddrs[15]ÍâµÄÖжϺ¯Êý
INTCON->EXT_INT = (1 << EINT0) //Çå³ýINT0ÖжϱêÖ¾ | (1 << EINT1) //Çå³ýINT1ÖжϱêÖ¾ | (1 << EINT2) //Çå³ýINT2ÖжϱêÖ¾ | (1 << EINT3);//Çå³ýINT3ÖжϱêÖ¾
VIC->SoftIntClr = (1 << VICIntSel_EINT0) //Çå³ýEINT0ÈíÖжϱêÖ¾ | (1 << VICIntSel_EINT1) //Çå³ýEINT1ÈíÖжϱêÖ¾ | (1 << VICIntSel_EINT1) //Çå³ýEINT2ÈíÖжϱêÖ¾ | (1 << VICIntSel_EINT1);//Çå³ýEINT3ÈíÖжϱêÖ¾
VIC->IntEnable = (1 << VICIntSel_EINT0) //ʹÄÜEINT0ÖÐ¶Ï | (1 << VICIntSel_EINT1);//ʹÄÜEINT1ÖжÏ
/*-------------------------------------------------------------------------- ÏÂÁÐÑ»·ÊǷǵäµÄ¾«»ªËùÔÚ£¬Æä˼·Çëµ½²ËµØµÄ[·ÇµäÐÍLPCARMÖ®¹¥·ÀÌåϵ]ÀïѰÕÒ¡£ user1/46/cmd.html?do=blogs&id=1240&uid=46
ÆäËûÐèÒªStartup_Hot.sÖ§³Ö£¬ÒÔÅäºÏ·ÇµäµÄÀ¹½Ø¹¤×÷¡£ ---------------------------------------------------------------------------*/ for (i = 0;i <= 15; i ++) { VIC->VectAddrs[i] = i;//Ë¢ÐÂÏòÁ¿µØÖ·¼Ä´æÆ÷VICVectAddr0~VICVectAddr15 }
VIC->Protection = 1;//¹Ø±ÕÔÚÓû§¼¶¶ÔVICµÄһЩд²Ù×÷ VIC->Protection = 0;//ÊÔͼÔÚÓû§¼¶´ò¿ª¶ÔVICµÄһЩд²Ù×÷µÄ±£»¤ Enable_FIQ();//¿ª·Å¿ìËÙÖжÏ×Ü¿ª¹Ø VIC->SoftInt = (1 << VICIntSel_EINT0);//Èí¼þÄ£Äâ¿ìËÙÖжÏ0(ʧ°Ü£¡£¡£¡) __nop(); Enable_VIC();//µÈÐ§ÎªÌØÈ¨¼¶µÄVIC->Protection = 0; VIC->SoftInt = (1 << VICIntSel_EINT0);//Èí¼þÄ£Äâ¿ìËÙÖжÏ0(³É¹¦£¡£¡£¡) __nop();
VIC->SoftInt = (1 << VICIntSel_SoftInt22);//Èí¼þÄ£ÄâÓû§Èí¼þÖжÏ(ʧ°Ü£¡£¡£¡)
Enable_IRQ();//×¢ÒâÏÖÔÚÁ¢¼´½øÈëEINT1Ó²¼þÖжϣ¨ÒòΪ¼Ù¶¨P0.3/P0.14¶¼Îª¸ßµçƽ£© VIC->SoftInt = (1 << VICIntSel_SoftInt22);//Èí¼þÄ£ÄâÓû§Èí¼þÖжÏ(³É¹¦£¡£¡£¡)
VIC->SoftInt = (1 << VICIntSel_EINT1);//Èí¼þÄ£ÄâÏòÁ¿ÖжÏ1(³É¹¦£¡£¡£¡)
VIC->Protection = 1;//¹Ø±ÕÔÚÓû§¼¶¶ÔVICµÄһЩд²Ù×÷ VIC->Protection = 0;;//ÔÚÓû§¼¶ÊÔͼд'0'ÎÞЧ!!!Ó¦¸ÃÓÃEnable_VIC();»òSetVICProtection(0); while(i == 0) {//²»»á½øÈëËÀÑ»· __nop(); } i = SetVICProtection(0);//½øÈëÌØÈ¨¼¶´ò¿ª¶ÔVICµÄһЩд²Ù×÷µÄ±£»¤
VIC->IntEnable |= (1 << VICIntSel_SoftInt23);//ʹÄÜ·Ç·¨Óû§Èí¼þÖÐ¶Ï VIC->IntEnable |= (1 << VICIntSel_SoftInt24);//ʹÄÜ·Ç·¨Óû§Èí¼þÖÐ¶Ï VIC->IntEnable |= (1 << VICIntSel_SoftInt25);//ʹÄÜ·Ç·¨Óû§Èí¼þÖÐ¶Ï VIC->IntEnable |= (1 << VICIntSel_SoftInt26);//ʹÄÜ·Ç·¨Óû§Èí¼þÖжÏ
Disable_IRQ();//¹Ø±ÕÏòÁ¿ÖжÏ×Ü¿ª¹Ø PINSEL->PIN_SEL0 |= (P0_7_EINT2 << P0_7_PINSEL); //Ñ¡ÔñP0.7ΪINT2ÍⲿÖжÏÒý½Å INTCON->EXT_POLAR &= ~(1 << EXTPOLAR2); //INT2ΪµÍµçƽÓÐЧ INTCON->EXT_MODE |= (1 << EXTMODE2); //ÉèÖÃINT2Ϊ±ßÑØ´¥·¢ // INTCON->EXT_MODE &= ~(1 << EXTMODE2); //ÉèÖÃINT2Ϊµçƽ´¥·¢ VIC->IntEnable |= (1 << VICIntSel_EINT2);//ʹÄÜ·Ç·¨ÍⲿÖжÏ2 /*---------------------------------------------------------------------------------------------- ÒÔϼ¸¾äÒý·¢·Ç·¨Óû§Èí¼þÖжϺóVIC->VectAddrֵΪVIC->DefVectAddr£¬¹Ê³ÌÐò·ÉÈëIRQ_Default()´¦Ö´ÐС£ -----------------------------------------------------------------------------------------------*/ VIC->SoftInt = (1 << VICIntSel_SoftInt23);//Èí¼þÄ£Äâ·Ç·¨Óû§Èí¼þÖжÏ(³ÌÐò·É) VIC->SoftInt = (1 << VICIntSel_SoftInt24);//Èí¼þÄ£Äâ·Ç·¨Óû§Èí¼þÖжÏ(³ÌÐò·É) VIC->SoftInt = (1 << VICIntSel_SoftInt25);//Èí¼þÄ£Äâ·Ç·¨Óû§Èí¼þÖжÏ(³ÌÐò·É) VIC->SoftInt = (1 << VICIntSel_SoftInt26);//Èí¼þÄ£Äâ·Ç·¨Óû§Èí¼þÖжÏ(³ÌÐò·É) VIC->SoftInt = (1 << VICIntSel_EINT2);//Èí¼þÄ£Äâ·Ç·¨INT2Èí¼þÖжÏ(³ÌÐò·É£¡£¡£¡)
INTCON->EXT_INT = (1 << EINT2);//Çå³ý·Ç·¨INT2ÖжϱêÖ¾ VIC->SoftIntClr = (1 << VICIntSel_EINT2);//Çå³ý·Ç·¨INT2Èí¼þÖжϱêÖ¾
Enable_IRQ();//¿ª·ÅÏòÁ¿ÖжÏ×Ü¿ª¹Ø
VIC->Protection = 1;//¹Ø±ÕÔÚÓû§¼¶¶ÔVICµÄһЩд²Ù×÷,±£»¤ÔÚÓû§¼¶VIC²»±»ÒÔÍâ¸Äд while(i == 0) {//½øÈëËÀÑ»· __nop(); } }
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