{"id":57895,"date":"2025-08-15T22:20:10","date_gmt":"2025-08-15T14:20:10","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/57895.html"},"modified":"2025-08-15T22:20:10","modified_gmt":"2025-08-15T14:20:10","slug":"%e3%80%90dsp28335-%e4%ba%8b%e4%bb%b6%e9%a9%b1%e5%8a%a8%e3%80%91%e5%94%a4%e9%86%92%e6%b2%89%e7%9d%a1%e7%9a%84-cpu%ef%bc%9a%e5%a4%96%e9%83%a8%e4%b8%ad%e6%96%ad-xint-%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/57895.html","title":{"rendered":"\u3010DSP28335 \u4e8b\u4ef6\u9a71\u52a8\u3011\u5524\u9192\u6c89\u7761\u7684 CPU\uff1a\u5916\u90e8\u4e2d\u65ad (XINT) \u5b9e\u6218"},"content":{"rendered":"<p>\u5927\u5bb6\u597d&#xff01;\u5728\u524d\u9762\u7684\u6559\u7a0b\u4e2d&#xff0c;\u6211\u4eec\u7684\u00a0main\u00a0\u51fd\u6570\u603b\u662f\u5728\u4e00\u4e2a\u00a0while(1)\u00a0\u5faa\u73af\u91cc\u5fd9\u788c\u5730\u67e5\u8be2&#xff08;\u8f6e\u8be2&#xff09;\u6309\u952e\u72b6\u6001\u3002\u8fd9\u79cd\u65b9\u5f0f\u867d\u7136\u53ef\u884c&#xff0c;\u4f46 CPU \u5c31\u50cf\u4e00\u4e2a\u4e0d\u505c\u6253\u7535\u8bdd\u95ee\u201c\u4f60\u597d\u4e86\u5417&#xff1f;\u201d\u7684\u4eba&#xff0c;\u65e2\u6d6a\u8d39\u4e86\u5927\u91cf\u7684\u8ba1\u7b97\u8d44\u6e90&#xff0c;\u4e5f\u65e0\u6cd5\u4fdd\u8bc1\u54cd\u5e94\u7684\u5b9e\u65f6\u6027\u3002<\/p>\n<p>\u4eca\u5929&#xff0c;\u6211\u4eec\u5c06\u5b66\u4e60\u4e00\u79cd\u9769\u547d\u6027\u7684\u5de5\u4f5c\u65b9\u5f0f\u2014\u2014\u5916\u90e8\u4e2d\u65ad (External Interrupt, XINT)\u3002\u6211\u4eec\u5c06\u6559\u4f1a DSP \u5728\u6ca1\u6709\u4e8b\u4ef6\u53d1\u751f\u65f6\u201c\u4f11\u606f\u201d&#xff08;\u6267\u884c\u4e3b\u5faa\u73af\u4efb\u52a1&#xff09;&#xff0c;\u53ea\u5728\u5916\u90e8\u5f15\u811a\u7535\u5e73\u53d1\u751f\u8df3\u53d8&#xff08;\u5982\u6309\u952e\u88ab\u6309\u4e0b&#xff09;\u7684\u77ac\u95f4&#xff0c;\u624d\u88ab\u5524\u9192\u53bb\u6267\u884c\u7279\u5b9a\u4efb\u52a1\u3002\u8fd9\u662f\u6784\u5efa\u9ad8\u6548\u3001\u4f4e\u529f\u8017\u3001\u9ad8\u54cd\u5e94\u901f\u5ea6\u7cfb\u7edf\u7684\u6838\u5fc3\u6280\u672f\u3002<\/p>\n<h4>\u4e00\u3001\u786c\u4ef6\u57fa\u7840&#xff1a;\u5916\u90e8\u4e2d\u65ad\u7684\u4fe1\u53f7\u901a\u8def<\/h4>\n<p style=\"text-align:center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"594\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815142005-689f421596740.png\" width=\"533\" \/><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"617\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815142007-689f421701300.png\" width=\"609\" \/><\/p>\n<p style=\"text-align:center\">[\u56fe1 &amp; \u56fe2: F28335 \u5916\u90e8\u4e2d\u65ad\u903b\u8f91\u7ed3\u6784\u56fe]<\/p>\n<p>DSP28335 \u63d0\u4f9b\u4e86\u4e00\u4e2a\u4e13\u95e8\u7528\u6765\u5904\u7406\u5916\u90e8\u5f15\u811a\u7535\u5e73\u53d8\u5316\u7684\u786c\u4ef6\u4e2d\u65ad\u7cfb\u7edf\u3002<\/p>\n<ul>\n<li>\n<p>7&#043;1 \u4e2a\u5916\u90e8\u4e2d\u65ad\u901a\u9053&#xff1a;\u00a0F28335 \u5171\u6709\u00a07 \u4e2a\u53ef\u5c4f\u853d\u5916\u90e8\u4e2d\u65ad (XINT1 ~ XINT7)\u00a0\u548c\u00a01 \u4e2a\u4e0d\u53ef\u5c4f\u853d\u5916\u90e8\u4e2d\u65ad (XNMI)&#xff0c;\u5176\u4e2d XNMI \u548c XINT13 \u5171\u7528\u4e2d\u65ad\u6e90\u3002<\/p>\n<\/li>\n<li>\n<p>\u7075\u6d3b\u7684 GPIO \u6620\u5c04&#xff1a;\u00a0\u5e76\u975e\u6240\u6709 GPIO \u90fd\u80fd\u89e6\u53d1\u6240\u6709\u5916\u90e8\u4e2d\u65ad\u3002\u5b83\u4eec\u7684\u5206\u5de5\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li>\n<p>XINT1, XINT2:\u00a0\u53ea\u80fd\u7531\u00a0GPIO0 ~ GPIO31\u00a0\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u5f15\u811a\u6765\u89e6\u53d1\u3002<\/p>\n<\/li>\n<li>\n<p>XINT3 ~ XINT7:\u00a0\u53ea\u80fd\u7531\u00a0GPIO32 ~ GPIO63\u00a0\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u5f15\u811a\u6765\u89e6\u53d1\u3002<\/p>\n<\/li>\n<li>\n<p>XNMI\/XINT13:\u00a0\u53ef\u7531\u00a0GPIO0 ~ GPIO31\u00a0\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u5f15\u5e55\u811a\u6765\u89e6\u53d1\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u4fe1\u53f7\u7684\u5b8c\u6574\u65c5\u7a0b\u662f&#xff1a;GPIO \u5f15\u811a -&gt; GPIO \u4e2d\u65ad\u9009\u62e9\u5668 (GPIOXINTnSEL) -&gt; XINTn \u4e2d\u65ad\u63a7\u5236\u5668 -&gt; PIE \u6a21\u5757 -&gt; C28x \u5185\u6838\u3002\u6211\u4eec\u8f6f\u4ef6\u914d\u7f6e\u7684\u6838\u5fc3&#xff0c;\u5c31\u662f\u6253\u901a\u8fd9\u6761\u8def\u5f84\u4e0a\u7684\u6240\u6709\u5173\u5361\u3002<\/p>\n<h4>\u4e8c\u3001\u6838\u5fc3\u5bc4\u5b58\u5668&#xff1a;\u914d\u7f6e\u4e2d\u65ad\u7684\u201c\u6273\u673a\u201d<\/h4>\n<p style=\"text-align:center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"456\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815142008-689f42188fc0a.png\" width=\"374\" \/><\/p>\n<p style=\"text-align:center\">[\u56fe3: \u5916\u90e8\u4e2d\u65ad\u63a7\u5236\u5bc4\u5b58\u5668 XINTnCR \u4f4d\u5b9a\u4e49]<\/p>\n<p>\u6bcf\u4e2a\u5916\u90e8\u4e2d\u65ad\u901a\u9053&#xff08;XINTn&#xff09;\u90fd\u6709\u4e00\u4e2a\u5bf9\u5e94\u7684\u63a7\u5236\u5bc4\u5b58\u5668\u00a0XINTnCR&#xff0c;\u5b83\u6709\u4e24\u5927\u5173\u952e\u8bbe\u7f6e&#xff1a;<\/p>\n<li>\n<p>Polarity\u00a0(\u4f4d 3~2)&#xff1a;\u89e6\u53d1\u6781\u6027<\/p>\n<ul>\n<li>\n<p>00\u00a0\u6216\u00a010&#xff1a;\u4e0b\u964d\u6cbf\u89e6\u53d1\u3002\u975e\u5e38\u9002\u5408\u6309\u952e\u6309\u4e0b&#xff08;\u7535\u5e73\u4ece\u9ad8\u5230\u4f4e&#xff09;\u7684\u573a\u666f\u3002<\/p>\n<\/li>\n<li>\n<p>01&#xff1a;\u4e0a\u5347\u6cbf\u89e6\u53d1\u3002<\/p>\n<\/li>\n<li>\n<p>11&#xff1a;\u4e0a\u5347\u6cbf\u548c\u4e0b\u964d\u6cbf\u5747\u89e6\u53d1\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>Enable\u00a0(\u4f4d 0)&#xff1a;\u4e2d\u65ad\u4f7f\u80fd<\/p>\n<ul>\n<li>\n<p>0&#xff1a;\u7981\u6b62\u8be5\u5916\u90e8\u4e2d\u65ad\u901a\u9053\u3002<\/p>\n<\/li>\n<li>\n<p>1&#xff1a;\u4f7f\u80fd\u8be5\u5916\u90e8\u4e2d\u65ad\u901a\u9053\u3002\u8fd9\u662f\u6253\u5f00 XINTn \u6a21\u5757\u81ea\u8eab\u529f\u80fd\u7684\u603b\u5f00\u5173\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<h4>\u4e09\u3001\u8f6f\u4ef6\u914d\u7f6e\u516b\u6b65\u6cd5&#xff1a;\u8ba9\u4e2d\u65ad\u8dd1\u8d77\u6765<\/h4>\n<p>\u914d\u7f6e\u4e00\u4e2a\u5916\u90e8\u4e2d\u65ad&#xff0c;\u867d\u7136\u6d89\u53ca\u591a\u4e2a\u6a21\u5757&#xff0c;\u4f46\u9075\u5faa\u4e00\u4e2a\u6e05\u6670\u3001\u56fa\u5b9a\u7684\u6d41\u7a0b\u3002\u4e0b\u9762\u6211\u4eec\u4ee5\u201c\u914d\u7f6e GPIO12 \u4f5c\u4e3a XINT1 \u7684\u89e6\u53d1\u6e90\u201d\u4e3a\u4f8b&#xff0c;\u62c6\u89e3\u8fd9\u516b\u4e2a\u6b65\u9aa4\u3002<\/p>\n<p>(1) \u521d\u59cb\u5316 PIE \u6a21\u5757<br \/>\n\u8fd9\u662f\u6240\u6709\u4e2d\u65ad\u914d\u7f6e\u7684\u8d77\u70b9\u3002\u6211\u4eec\u9700\u8981\u521d\u59cb\u5316 PIE \u63a7\u5236\u5668\u548c\u5411\u91cf\u8868&#xff0c;\u4e3a\u4e2d\u65ad\u7cfb\u7edf\u642d\u5efa\u597d\u57fa\u7840\u6846\u67b6\u3002<\/p>\n<p>InitPieCtrl();      \/\/ \u521d\u59cb\u5316PIE\u63a7\u5236\u5668\u5bc4\u5b58\u5668<br \/>\nIER &#061; 0x0000;       \/\/ \u6e05\u96f6CPU\u7ea7\u4e2d\u65ad\u4f7f\u80fd\u5bc4\u5b58\u5668<br \/>\nIFR &#061; 0x0000;       \/\/ \u6e05\u96f6CPU\u7ea7\u4e2d\u65ad\u6807\u5fd7\u5bc4\u5b58\u5668<br \/>\nInitPieVectTable(); \/\/ \u521d\u59cb\u5316PIE\u4e2d\u65ad\u5411\u91cf\u8868&#xff0c;\u5c06\u5176\u6240\u6709\u5165\u53e3\u6307\u5411\u4e00\u4e2a\u9ed8\u8ba4ISR<\/p>\n<p>(2) \u914d\u7f6e GPIO \u4e3a\u8f93\u5165\u6a21\u5f0f<br \/>\n\u65e2\u7136\u8981\u63a5\u6536\u5916\u90e8\u4fe1\u53f7&#xff0c;\u90a3\u4e48\u5bf9\u5e94\u7684 GPIO \u5f15\u811a\u5fc5\u987b\u88ab\u914d\u7f6e\u4e3a\u8f93\u5165\u6a21\u5f0f\u3002<\/p>\n<p>EALLOW;<br \/>\n\/\/ \u4f7f\u80fdGPIO\u65f6\u949f&#8230;<br \/>\nGpioCtrlRegs.GPAMUX1.bit.GPIO12 &#061; 0; \/\/ \u8bbe\u4e3a\u901a\u7528GPIO<br \/>\nGpioCtrlRegs.GPADIR.bit.GPIO12 &#061; 0;  \/\/ \u8bbe\u4e3a\u8f93\u5165<br \/>\nEDIS;<\/p>\n<p>(3) \u6620\u5c04 GPIO \u5230\u4e2d\u65ad\u7ebf<br \/>\n\u544a\u8bc9\u7cfb\u7edf&#xff0c;XINT1 \u8fd9\u6761\u4e2d\u65ad\u4e13\u7ebf\u5e94\u8be5\u53bb\u201c\u76d1\u542c\u201d\u54ea\u4e2a GPIO \u5f15\u811a\u3002<\/p>\n<p>EALLOW;<br \/>\n\/\/ XINT1 \u7684\u6e90\u9009\u62e9\u5bc4\u5b58\u5668&#xff0c;.GPIOSEL \u5b57\u6bb5\u5199\u5165\u5f15\u811a\u53f7<br \/>\nGpioIntRegs.GPIOXINT1SEL.bit.GPIOSEL &#061; 12; \/\/ XINT1 \u7531 GPIO12 \u89e6\u53d1<br \/>\nEDIS;<\/p>\n<p>(4) \u6ce8\u518c\u4e2d\u65ad\u670d\u52a1\u51fd\u6570 (ISR)<br \/>\n\u5c06\u6211\u4eec\u81ea\u5df1\u7f16\u5199\u7684 ISR \u51fd\u6570\u5730\u5740&#xff0c;\u5199\u5165\u5230 PIE \u5411\u91cf\u8868\u4e2d\u00a0XINT1\u00a0\u5bf9\u5e94\u7684\u4f4d\u7f6e\u3002<\/p>\n<p>EALLOW;<br \/>\nPieVectTable.XINT1 &#061; &amp;EXTI1_IRQn; \/\/ EXTI1_IRQn \u662f\u6211\u4eec\u51fd\u6570\u7684\u51fd\u6570\u540d<br \/>\nEDIS;<\/p>\n<p>(5) \u4f7f\u80fd PIE \u7ea7\u4e2d\u65ad<br \/>\n\u6839\u636e PIE \u4e2d\u65ad\u5411\u91cf\u8868&#xff0c;XINT1 \u5c5e\u4e8e PIE\u00a0\u7b2c 1 \u7ec4\u7684\u7b2c 4 \u4e2a\u4e2d\u65ad (INT1.4)\u3002\u6211\u4eec\u9700\u8981\u6253\u5f00\u8fd9\u4e2a\u901a\u9053\u3002<\/p>\n<p>PieCtrlRegs.PIEIER1.bit.INTx4 &#061; 1; \/\/ \u4f7f\u80fd PIE \u7ec41 \u7684 INT4<\/p>\n<p>(6) \u914d\u7f6e XINTn \u7684\u89e6\u53d1\u65b9\u5f0f\u5e76\u4f7f\u80fd<br \/>\n\u8bbe\u7f6e\u00a0XINTnCR\u00a0\u5bc4\u5b58\u5668&#xff0c;\u5b9a\u4e49\u6211\u4eec\u9700\u8981\u7684\u89e6\u53d1\u8fb9\u6cbf&#xff0c;\u5e76\u6b63\u5f0f\u542f\u7528 XINT1 \u6a21\u5757\u3002<\/p>\n<p>XIntruptRegs.XINT1CR.bit.POLARITY &#061; 0; \/\/ 0: \u4e0b\u964d\u6cbf\u89e6\u53d1<br \/>\nXIntruptRegs.XINT1CR.bit.ENABLE &#061; 1;   \/\/ 1: \u4f7f\u80fd XINT1<\/p>\n<p>(7) \u4f7f\u80fd CPU \u7ea7\u4e2d\u65ad<br \/>\n\u6253\u5f00 CPU \u7ea7\u7684\u603b\u5f00\u5173\u3002\u56e0\u4e3a XINT1 \u6700\u7ec8\u6c47\u96c6\u5230 CPU \u7684\u00a0INT1\u00a0\u603b\u7ebf\u4e0a&#xff0c;\u6240\u4ee5\u6211\u4eec\u8981\u4f7f\u80fd\u00a0INT1&#xff0c;\u5e76\u6253\u5f00\u5168\u5c40\u4e2d\u65ad\u3002<\/p>\n<p>IER |&#061; M_INT1; \/\/ \u4f7f\u80fdCPU\u7684INT1<br \/>\nEINT;          \/\/ \u4f7f\u80fd\u5168\u5c40\u4e2d\u65ad(Clear INTM bit)<br \/>\nERTM;          \/\/ \u4f7f\u80fd\u8c03\u8bd5\u4e8b\u4ef6<\/p>\n<p>(8) \u7f16\u5199\u4e2d\u65ad\u670d\u52a1\u51fd\u6570 (ISR)<br \/>\n\u8fd9\u662f\u4e2d\u65ad\u53d1\u751f\u540e&#xff0c;CPU \u6700\u7ec8\u8981\u6267\u884c\u7684\u4ee3\u7801\u3002<\/p>\n<p>\/\/ \u4f7f\u7528 &#039;interrupt&#039; \u5173\u952e\u5b57\u58f0\u660e\u8fd9\u662f\u4e00\u4e2a\u4e2d\u65ad\u670d\u52a1\u51fd\u6570<br \/>\ninterrupt void EXTI1_IRQn(void)<br \/>\n{<br \/>\n    \/\/ &#8230; \u5728\u8fd9\u91cc\u7f16\u5199\u5904\u7406\u4e8b\u4ef6\u7684\u4ee3\u7801 &#8230;<\/p>\n<p>    \/\/ !! \u5173\u952e&#xff1a;\u5411 PIE \u53d1\u9001\u201c\u786e\u8ba4\u201d\u4fe1\u53f7&#xff0c;\u8868\u793a\u4e2d\u65ad\u5df2\u5904\u7406<br \/>\n    PieCtrlRegs.PIEACK.all &#061; PIEACK_GROUP1;<br \/>\n}<\/p>\n<p>PIEACK\u00a0\u5bc4\u5b58\u5668\u975e\u5e38\u91cd\u8981&#xff0c;\u5b83\u544a\u8bc9 PIE \u63a7\u5236\u5668&#xff0c;\u8be5\u7ec4\u7684\u4e2d\u65ad\u5df2\u7ecf\u5f97\u5230\u54cd\u5e94&#xff0c;\u53ef\u4ee5\u6e05\u9664\u6807\u5fd7&#xff0c;\u4ee5\u4fbf\u4e0b\u4e00\u6b21\u4e2d\u65ad\u80fd\u6b63\u5e38\u89e6\u53d1\u3002<\/p>\n<h4>\u56db\u3001\u4ee3\u7801\u5b9e\u6218&#xff1a;\u6309\u952e\u89e6\u53d1 LED \u7ffb\u8f6c<\/h4>\n<p>\u4e0b\u9762\u6211\u4eec\u901a\u8fc7\u5b8c\u6574\u7684\u4ee3\u7801&#xff0c;\u5b9e\u73b0\u7528 K1 \u952e (\u8fde\u63a5 GPIO12) \u89e6\u53d1 XINT1 \u4e2d\u65ad\u6765\u7ffb\u8f6c LED2&#xff0c;\u7528\u53e6\u4e00\u4e2a\u6309\u952e (\u8fde\u63a5 GPIO13) \u89e6\u53d1 XINT2 \u4e2d\u65ad\u6765\u7ffb\u8f6c LED3\u3002<\/p>\n<h5>1.\u00a0exti.h\u00a0(\u5934\u6587\u4ef6)<\/h5>\n<p>#ifndef EXTI_H_<br \/>\n#define EXTI_H_<\/p>\n<p>#include &#034;DSP2833x_Device.h&#034;     \/\/ DSP2833x \u5934\u6587\u4ef6<br \/>\n#include &#034;DSP2833x_Examples.h&#034;   \/\/ DSP2833x \u4f8b\u5b50\u76f8\u5173\u5934\u6587\u4ef6<\/p>\n<p>void EXTI1_Init(void);<br \/>\ninterrupt void EXTI1_IRQn(void);<\/p>\n<p>void EXTI2_Init(void);<br \/>\ninterrupt void EXTI2_IRQn(void);<\/p>\n<p>#endif \/* EXTI_H_ *\/<\/p>\n<p>2.\u00a0exti.c\u00a0(\u6e90\u6587\u4ef6)<\/p>\n<p>#include &#034;exti.h&#034;<br \/>\n#include &#034;leds.h&#034;<br \/>\n#include &#034;key.h&#034;<\/p>\n<p>void EXTI1_Init(void)<br \/>\n{<br \/>\nEALLOW;<br \/>\nSysCtrlRegs.PCLKCR3.bit.GPIOINENCLK &#061; 1;    \/\/ GPIO input clock<br \/>\nEDIS;<\/p>\n<p>EALLOW;<br \/>\n\/\/KEY\u7aef\u53e3\u914d\u7f6e<br \/>\nGpioCtrlRegs.GPAMUX1.bit.GPIO12&#061;0;<br \/>\nGpioCtrlRegs.GPADIR.bit.GPIO12&#061;0;<br \/>\nGpioCtrlRegs.GPAPUD.bit.GPIO12&#061;0;<br \/>\nGpioCtrlRegs.GPAQSEL1.bit.GPIO12 &#061; 0;        \/\/ \u5916\u90e8\u4e2d\u65ad1&#xff08;XINT1&#xff09;\u4e0e\u7cfb\u7edf\u65f6\u949fSYSCLKOUT\u540c\u6b65<\/p>\n<p>GpioCtrlRegs.GPBMUX2.bit.GPIO48&#061;0;<br \/>\nGpioCtrlRegs.GPBDIR.bit.GPIO48&#061;1;<br \/>\nGpioCtrlRegs.GPBPUD.bit.GPIO48&#061;0;<br \/>\nGpioDataRegs.GPBCLEAR.bit.GPIO48&#061;1;<br \/>\nEDIS;<\/p>\n<p>EALLOW;<br \/>\nGpioIntRegs.GPIOXINT1SEL.bit.GPIOSEL &#061; 12;   \/\/ XINT1\u662fGPIO12<br \/>\nEDIS;<\/p>\n<p>EALLOW;\/\/ \u4fee\u6539\u88ab\u4fdd\u62a4\u7684\u5bc4\u5b58\u5668&#xff0c;\u4fee\u6539\u524d\u5e94\u6dfb\u52a0EALLOW\u8bed\u53e5<br \/>\nPieVectTable.XINT1 &#061; &amp;EXTI1_IRQn;<br \/>\nEDIS;   \/\/ EDIS\u7684\u610f\u601d\u662f\u4e0d\u5141\u8bb8\u4fee\u6539\u88ab\u4fdd\u62a4\u7684\u5bc4\u5b58\u5668<\/p>\n<p>PieCtrlRegs.PIEIER1.bit.INTx4 &#061; 1;          \/\/ \u4f7f\u80fdPIE\u7ec41\u7684INT4<\/p>\n<p>XIntruptRegs.XINT1CR.bit.POLARITY &#061; 0;      \/\/ \u4e0b\u964d\u6cbf\u89e6\u53d1\u4e2d\u65ad<br \/>\nXIntruptRegs.XINT1CR.bit.ENABLE&#061; 1;        \/\/ \u4f7f\u80fdXINT1<\/p>\n<p>IER |&#061; M_INT1;                              \/\/ \u4f7f\u80fdCPU\u4e2d\u65ad1&#xff08;INT1&#xff09;<br \/>\nEINT;                                       \/\/ \u5f00\u5168\u5c40\u4e2d\u65ad<br \/>\nERTM;<br \/>\n}<\/p>\n<p>interrupt void EXTI1_IRQn(void)<br \/>\n{<br \/>\nUint32 i;<br \/>\nfor(i&#061;0;i&lt;10000;i&#043;&#043;);    \/\/\u952e\u76d8\u6d88\u6296\u52a8<br \/>\nwhile(!KEY_H1);<br \/>\nLED2_TOGGLE;<br \/>\nPieCtrlRegs.PIEACK.bit.ACK1&#061;1;<br \/>\n}<\/p>\n<p>void EXTI2_Init(void)<br \/>\n{<br \/>\nEALLOW;<br \/>\nSysCtrlRegs.PCLKCR3.bit.GPIOINENCLK &#061; 1;    \/\/ GPIO input clock<br \/>\nEDIS;<\/p>\n<p>EALLOW;<br \/>\n\/\/KEY\u7aef\u53e3\u914d\u7f6e<br \/>\nGpioCtrlRegs.GPAMUX1.bit.GPIO13&#061;0;<br \/>\nGpioCtrlRegs.GPADIR.bit.GPIO13&#061;0;<br \/>\nGpioCtrlRegs.GPAPUD.bit.GPIO13&#061;0;<br \/>\nGpioCtrlRegs.GPAQSEL1.bit.GPIO13 &#061; 2;        \/\/ \u5916\u90e8\u4e2d\u65ad2&#xff08;XINT2&#xff09;\u8f93\u5165\u9650\u5b9a6\u4e2a\u91c7\u6837\u7a97\u53e3<br \/>\nGpioCtrlRegs.GPACTRL.bit.QUALPRD1 &#061; 0xFF;   \/\/ \u6bcf\u4e2a\u91c7\u6837\u7a97\u53e3\u7684\u5468\u671f\u4e3a510*SYSCLKOUT<\/p>\n<p>GpioCtrlRegs.GPBMUX2.bit.GPIO48&#061;0;<br \/>\nGpioCtrlRegs.GPBDIR.bit.GPIO48&#061;1;<br \/>\nGpioCtrlRegs.GPBPUD.bit.GPIO48&#061;0;<br \/>\nGpioDataRegs.GPBCLEAR.bit.GPIO48&#061;1;<br \/>\nEDIS;<\/p>\n<p>EALLOW;<br \/>\nGpioIntRegs.GPIOXINT2SEL.bit.GPIOSEL &#061; 13;   \/\/ XINT2\u662fGPIO13<br \/>\nEDIS;<\/p>\n<p>EALLOW;\/\/ \u4fee\u6539\u88ab\u4fdd\u62a4\u7684\u5bc4\u5b58\u5668&#xff0c;\u4fee\u6539\u524d\u5e94\u6dfb\u52a0EALLOW\u8bed\u53e5<br \/>\nPieVectTable.XINT2 &#061; &amp;EXTI2_IRQn;<br \/>\nEDIS;   \/\/ EDIS\u7684\u610f\u601d\u662f\u4e0d\u5141\u8bb8\u4fee\u6539\u88ab\u4fdd\u62a4\u7684\u5bc4\u5b58\u5668<\/p>\n<p>PieCtrlRegs.PIEIER1.bit.INTx5 &#061; 1;          \/\/ \u4f7f\u80fdPIE\u7ec41\u7684INT5<\/p>\n<p>XIntruptRegs.XINT2CR.bit.POLARITY &#061; 0;      \/\/ \u4e0b\u964d\u6cbf\u89e6\u53d1\u4e2d\u65ad<br \/>\nXIntruptRegs.XINT2CR.bit.ENABLE &#061; 1;        \/\/ \u4f7f\u80fdXINT2<\/p>\n<p>IER |&#061; M_INT1;                              \/\/ \u4f7f\u80fdCPU\u4e2d\u65ad1&#xff08;INT1&#xff09;<br \/>\nEINT;                                       \/\/ \u5f00\u5168\u5c40\u4e2d\u65ad<br \/>\nERTM;<br \/>\n}<\/p>\n<p>interrupt void EXTI2_IRQn(void)<br \/>\n{<br \/>\nUint32 i;<br \/>\nfor(i&#061;0;i&lt;10000;i&#043;&#043;);    \/\/\u952e\u76d8\u6d88\u6296\u52a8<br \/>\nwhile(!KEY_H2);<br \/>\nLED3_TOGGLE;<br \/>\nPieCtrlRegs.PIEACK.bit.ACK1&#061;1;<br \/>\n}<\/p>\n<p>3. mian.c\u00a0(\u6e90\u6587\u4ef6)<\/p>\n<p>#include &#034;DSP2833x_Device.h&#034;     \/\/ DSP2833x Headerfile Include File<br \/>\n#include &#034;DSP2833x_Examples.h&#034;   \/\/ DSP2833x Examples Include File<\/p>\n<p>#include &#034;leds.h&#034;<br \/>\n#include &#034;exti.h&#034;<\/p>\n<p>\/*******************************************************************************<br \/>\n* \u51fd \u6570 \u540d         : main<br \/>\n* \u51fd\u6570\u529f\u80fd   : \u4e3b\u51fd\u6570<br \/>\n* \u8f93    \u5165         : \u65e0<br \/>\n* \u8f93    \u51fa         : \u65e0<br \/>\n*******************************************************************************\/<br \/>\nvoid main()<br \/>\n{<br \/>\nint i&#061;0;<\/p>\n<p>InitSysCtrl();<\/p>\n<p>InitPieCtrl();<br \/>\nIER &#061; 0x0000;<br \/>\nIFR &#061; 0x0000;<br \/>\nInitPieVectTable();<\/p>\n<p>LED_Init();<br \/>\nEXTI1_Init();<br \/>\nEXTI2_Init();<\/p>\n<p>while(1)<br \/>\n{<br \/>\ni&#043;&#043;;<br \/>\nif(i%2000&#061;&#061;0)<br \/>\n{<br \/>\nLED1_TOGGLE;<br \/>\n}<br \/>\nDELAY_US(100);<br \/>\n}<br \/>\n}<\/p>\n<p>\u53ef\u4ee5\u770b\u5230&#xff0c;\u4e3b\u5faa\u73af\u00a0while(1)\u00a0\u91cc\u4e0d\u518d\u6709\u00a0KEY_Scan()\u00a0\u51fd\u6570\u4e86\u3002CPU \u53ea\u662f\u5728\u60a0\u95f2\u5730\u95ea\u70c1\u7740 LED1&#xff0c;\u5b8c\u5168\u4e0d\u7528\u5173\u5fc3\u6309\u952e\u4f55\u65f6\u6309\u4e0b\u3002\u4e00\u65e6\u6309\u952e\u6309\u4e0b&#xff0c;\u786c\u4ef6\u4f1a\u81ea\u52a8\u6253\u65ad CPU&#xff0c;\u53bb\u6267\u884c\u5bf9\u5e94\u7684 ISR&#xff0c;\u6267\u884c\u5b8c\u6bd5\u540e\u518d\u65e0\u7f1d\u8fd4\u56de&#xff0c;\u8fd9\u6b63\u662f\u4e2d\u65ad\u7684\u9b45\u529b\u6240\u5728\u3002<\/p>\n<h4>\u603b\u7ed3<\/h4>\n<p>\u901a\u8fc7\u672c\u6b21\u5b9e\u6218&#xff0c;\u6211\u4eec\u4e0d\u4ec5\u5c06\u4e2d\u65ad\u7406\u8bba\u843d\u5730&#xff0c;\u8fd8\u638c\u63e1\u4e86\u914d\u7f6e\u548c\u4f7f\u7528\u5916\u90e8\u4e2d\u65ad\u7684\u5168\u6d41\u7a0b\u3002\u4f60\u73b0\u5728\u5e94\u8be5\u6df1\u523b\u7406\u89e3\u4e86&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5916\u90e8\u4e2d\u65ad\u4fe1\u53f7\u4ece GPIO \u5230 CPU \u7684\u5b8c\u6574\u786c\u4ef6\u8def\u5f84\u3002<\/p>\n<\/li>\n<li>\n<p>\u8f6f\u4ef6\u914d\u7f6e\u5916\u90e8\u4e2d\u65ad\u7684 8 \u5927\u5173\u952e\u6b65\u9aa4&#xff0c;\u7f3a\u4e00\u4e0d\u53ef\u3002<\/p>\n<\/li>\n<li>\n<p>\u5982\u4f55\u7f16\u5199\u4e00\u4e2a\u89c4\u8303\u7684\u4e2d\u65ad\u670d\u52a1\u51fd\u6570&#xff0c;\u5c24\u5176\u662f\u00a0PIEACK\u00a0\u7684\u91cd\u8981\u6027\u3002<\/p>\n<\/li>\n<li>\n<p>\u4e2d\u65ad\u9a71\u52a8\u7684\u7f16\u7a0b\u601d\u60f3&#xff0c;\u5982\u4f55\u5c06 CPU \u4ece\u7e41\u5fd9\u7684\u8f6e\u8be2\u4e2d\u89e3\u653e\u51fa\u6765\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u5916\u90e8\u4e2d\u65ad\u662f DSP \u4e0e\u5916\u90e8\u4e16\u754c\u5b9e\u65f6\u4ea4\u4e92\u7684\u6865\u6881\u3002\u638c\u63e1\u4e86\u5b83&#xff0c;\u4f60\u5c31\u62e5\u6709\u4e86\u6784\u5efa\u590d\u6742\u3001\u9ad8\u6548\u3001\u53ef\u9760\u5d4c\u5165\u5f0f\u7cfb\u7edf\u7684\u5173\u952e\u80fd\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb324\u6b21\uff0c\u70b9\u8d5e15\u6b21\uff0c\u6536\u85cf3\u6b21\u3002\u901a\u8fc7\u672c\u6b21\u5b9e\u6218\uff0c\u6211\u4eec\u4e0d\u4ec5\u5c06\u4e2d\u65ad\u7406\u8bba\u843d\u5730\uff0c\u8fd8\u638c\u63e1\u4e86\u914d\u7f6e\u548c\u4f7f\u7528\u5916\u90e8\u4e2d\u65ad\u7684\u5168\u6d41\u7a0b\u3002\u4f60\u73b0\u5728\u5e94\u8be5\u6df1\u523b\u7406\u89e3\u4e86\uff1a\u5916\u90e8\u4e2d\u65ad\u4fe1\u53f7\u4ece GPIO \u5230 CPU \u7684\u5b8c\u6574\u786c\u4ef6\u8def\u5f84\u3002\u8f6f\u4ef6\u914d\u7f6e\u5916\u90e8\u4e2d\u65ad\u7684 8 \u5927\u5173\u952e\u6b65\u9aa4\uff0c\u7f3a\u4e00\u4e0d\u53ef\u3002\u5982\u4f55\u7f16\u5199\u4e00\u4e2a\u89c4\u8303\u7684\u4e2d\u65ad\u670d\u52a1\u51fd\u6570\uff0c\u5c24\u5176\u662f PIEACK \u7684\u91cd\u8981\u6027\u3002\u4e2d\u65ad\u9a71\u52a8\u7684\u7f16\u7a0b\u601d\u60f3\uff0c\u5982\u4f55\u5c06 CPU \u4ece\u7e41\u5fd9\u7684\u8f6e\u8be2\u4e2d\u89e3\u653e\u51fa\u6765\u3002\u5916\u90e8\u4e2d\u65ad\u662f DSP \u4e0e\u5916\u90e8\u4e16\u754c\u5b9e\u65f6\u4ea4\u4e92\u7684\u6865\u6881\u3002\u638c\u63e1\u4e86\u5b83\uff0c\u4f60\u5c31\u62e5\u6709\u4e86\u6784\u5efa\u590d\u6742\u3001\u9ad8\u6548\u3001\u53ef\u9760\u5d4c\u5165\u5f0f\u7cfb\u7edf\u7684\u5173\u952e\u80fd\u529b\u3002<\/p>\n","protected":false},"author":2,"featured_media":57892,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[6090,2639,270,269],"topic":[],"class_list":{"0":"post-57895","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-server","8":"tag-dsp","10":"tag-270","11":"tag-269"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010DSP28335 \u4e8b\u4ef6\u9a71\u52a8\u3011\u5524\u9192\u6c89\u7761\u7684 CPU\uff1a\u5916\u90e8\u4e2d\u65ad (XINT) \u5b9e\u6218 - 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