{"id":905,"date":"2017-03-06T17:24:10","date_gmt":"2017-03-06T09:24:10","guid":{"rendered":"http:\/\/www.luwl.net\/?p=905"},"modified":"2017-03-06T17:24:10","modified_gmt":"2017-03-06T09:24:10","slug":"stc15-pwm%e9%a2%91%e7%8e%87","status":"publish","type":"post","link":"http:\/\/www.luwl.net\/?p=905","title":{"rendered":"STC15 PWM\u9891\u7387"},"content":{"rendered":"

STC15\u7684PWM\u8f93\u51fa\u9891\u7387\u8ba1\u7b97\uff1a<\/p>\n

PCA\u521d\u59cb\u5316\u65f6\uff0cPCA_Clock_1T\u65f6\uff0c\u9891\u7387\u4e3a\u7cfb\u7edf\u9891\u7387\/256\u3002<\/p>\n

22.1184M\u65f6\uff0cPWM\u4e3a86.4K Hz<\/p>\n

\u6211\u8981\u4e00\u4e2a\u66f4\u4f4e\u7684\u9891\u7387\u600e\u4e48\u505a\u5462\uff1f<\/p>\n

PCA_Clock_12T \u9891\u7387\u4e5f\u4e3a7.2K\uff0c\u53ea\u6709\u964d\u4f4e\u65f6\u949f\u9891\u7387\u4e86\uff0c\u6700\u4f4e\u964d\u4e3a5.5296M\u7684\u65f6\u5019\uff0c5.5296M\/256\/12\u4e3a1.8K\u3002<\/p>\n

\u73b0\u5728\uff0c\u53ea\u80fd\u518d\u8fdb\u884c\u5206\u9891\u4e86\uff0cSYSTEM_CLK_4T()\uff0c\u4f7f\u7cfb\u7edf\u65f6\u949f\u53d8\u4e3a1.3824M\uff0c\u8fd9\u6837\uff0cPWM\u9891\u7387\u4e3a540Hz<\/p>\n

\u7a0b\u5e8f\uff1a<\/p>\n

\r\n\r\n#include "config.h"\r\n#include "delay.h"\r\n#include "PCA.h"\r\n#include "ADC.h"\r\n\/************* \u672c\u5730\u51fd\u6570\u58f0\u660e **************\/\r\nvoid timer0_int (void) interrupt TIMER0_VECTOR \/\/timer0\u7528\u6765\u8c03\u5ea6\u5b9a\u65f6\u4efb\u52a1\u3002\r\n{\r\nUpdatePwm(PCA0,255-GetADCResult(0));\r\nUpdatePwm(PCA1,255-GetADCResult(1));\r\nUpdatePwm(PCA2,255-GetADCResult(2));\r\nWDT_reset(4);\/\/\u5582\u72d7\r\n}\r\n\/**********************************************\/\r\nvoid main(void)\r\n{\r\nSYSTEM_CLK_4T();\r\nTimer0_16bitAutoReload();\/\/16\u4f4d\u6a21\u5f0f\r\nTimer0_AsTimer();\/\/\u5b9a\u65f6\u5668\u6a21\u5f0f\r\nTimer0_1T();\r\nTL0 = 0x9A; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u503c1ms\r\nTH0 = 0xA9; \/\/\u8bbe\u7f6e\u5b9a\u65f6\u521d\u503c\r\nTimer0_InterruptEnable();\/\/\u4f7f\u80fd\u5b9a\u65f6\u56680\r\nPCA_config(); \/\/PWM\u914d\u7f6e\r\nInitADC(); \/\/\u521d\u59cb\u5316ADC\r\nEA = 1;\/\/\u4f7f\u80fd\u603b\u4e2d\u65ad\r\ndelay_ms(1);\r\ndelay_3us(1);\r\ndelay_us(1);\r\nTimer0_Run(); \/\/\u5b8c\u6210\u521d\u59cb\u5316\u5b9a\u65f6\u56680\u5f00\u59cb\u8ba1\u65f6\r\nwhile (1)\r\n{\r\n}\n\n}\r\n\r\n<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
STC15\u7684PWM\u8f93\u51fa\u9891\u7387\u8ba1\u7b97\uff1a PCA\u521d\u59cb\u5316\u65f6\uff0cPCA_Clock_1T\u65f6\uff0c\u9891 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-905","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.luwl.net\/index.php?rest_route=\/wp\/v2\/posts\/905","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.luwl.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.luwl.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.luwl.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.luwl.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=905"}],"version-history":[{"count":1,"href":"http:\/\/www.luwl.net\/index.php?rest_route=\/wp\/v2\/posts\/905\/revisions"}],"predecessor-version":[{"id":906,"href":"http:\/\/www.luwl.net\/index.php?rest_route=\/wp\/v2\/posts\/905\/revisions\/906"}],"wp:attachment":[{"href":"http:\/\/www.luwl.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=905"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.luwl.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=905"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.luwl.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}