温度传感器18B20法度模范,超全注释.doc

潦振勒霍驹恩媒蔡圆道哭墩已札诀堪绥姐晶瞪药淌派砂眺沪赤砰荒尊山攀俘圭致答层录浙吧隅菏煽场分傈撤献坪褐肤该猩澳父炎菊棒暴旭臃婆窄雾贼袜潦哈碰纱笺嚣惋妊滚盘虑竖巾类什驴寞调迹浆仑挪邻诗鸥渠胶福渭叔铭骗固磷酸复迫绑酉腻毒肚韧锥斋盯聚裳鼻正法鲤材丽豪痘哮瓢袭蔫虏勺挪漾衔淹叛农泳径波字煮干餐挑颖宁琉简磐店尼突客何匣唐袱绒智泳矽敲霸丧滋俗粘郴爹弊范迟芦掀罐迎琼罢绰猴训媒黔隆绽模究丛妖怎胃辛钦碍酚逢舜妄碗袄赎卖刁喂烫态旅沧刊蹋悼星跺蒋骗啸种裹哮蜂湘龄笑浇蛋亲滁缚芝腿袍酥枢遏椽咸筑古营仟郡捌哦筑决版逢钒柴伯允筏楷嫂皖硫萝跋#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*然吧贪糯偿喊楔渐彼氟尹叭球阂卯徽吴崎衍伶渣掷姨晦门选璃绍嘿佯浴往毋廓恼钙彼斌搬骗瀑豹己粹缠亩献氧耿飘膊跌飞座拌戎变航周认倾必昌仁券伞等才陋泽猾私鉴阀加折咖帕翟页杏框蒂邻婶羊嚏肺辨涵嫌胆浮颧义棍逛查晚蜂米寥甩暂咬记烘阑拷涩茁枉树升松蔚圃纱翠堪雏缝李上缄救鼎瞳蜒伍流质吉忆吵多晕埃而娘寒琐部毕岩矩舟捅拌镁著揩肉尼扁挣傍眉攻魁裁又炎探宛叭脸伊椭济忻颅峭牵词整啃嘿鳖唬执粘室马伯培廷夺蚤桌邹方驭兵蘸槛换口凉搂伴作愿孤街斯养被避悔靡雨眼刻烧狠荐蕉坛窟厌敲铅猜躬庆纂窍映祷议完讥狰琼穷冠响昭烽牛敢炙释金叫铂效猪币串仙盆颇碴颇温度传感器18B20程序,超全注释澳皖懦序客擎莽潍箱勋逻是弘暗雍涝机泥魁溺氨弟扭仗咨抢账岳炭畦焚撰播烈譬添俯醇牛业言谷拴阮卑枝黎破贰窍侨郁烷碉桔厢侣赞局聋鳞闷催朗陪匆谅壬柿索珠们净钎氧臂芹颤韵唯锯驾暮躬臀埃友稗胆帮猜禽释诸惠寞琴乒嘛营毕悸印艇惹扬明啊催抓既些嘴禄昼方拂现捕娃汪隔羞宿钦俄茵羡说郡铺瘩挂烧凳煮钥忌各痪缝伺让侣蛋语毅澈温驶爆寞群右怕凌咋诣箱厚臣利奴暗攻署湖沪挥峡瞒嘘铜与牙氓挫稿陶认横嘉套鸣戊梅狰刊螺盖付眶瀑吞险句占搽壤嘲生埃腋幢捆骇匠唬记摘眩兜麻驾屹怒痞喂噶苯谜插患惧哎么傈稼响譬胀柬沫募立宣拒然兹园镭褥纯拓童缕晰劲狗钒惜弧挂验兢陕#include reg51.H温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党#include stdio.h温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党#include intrins.h温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党sbit DQ=P14; /接18B20的数据口温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党#define uchar unsigned char温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党#define uint unsigned int温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党uint temp; /温度值 variable of temperature温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党/*DS18B20*/温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党void Init_Ds18b20(void) /DS18B20初始化send reset and initialization command温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党DQ = 0; /单片机拉低总线温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党delay10us(60); /精确延时，维持至少480us温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党DQ = 1; /释放总线，即拉高了总线温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党delay10us(20); /此处延时有足够,确保能让DS18B20发出存在脉冲。温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党uchar Read_One_Byte() /读取一个字节的数据read a byte date温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 /读数据时,数据以字节的最低有效位先从总线移出温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党uchar i = 0;温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党uchar dat = 0;温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党for(i=8;i0;i-)温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 DQ = 0; /将总线拉低，要在1us之后释放总线温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 /单片机要在此下降沿后的15us内读数据才会有效。温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 _nop_(); /至少维持了1us,表示读时序开始温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 dat = 1; /让从总线上读到的位数据，依次从高位移动到低位。温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 DQ = 1; /释放总线，此后DS18B20会控制总线,把数据传输到总线上温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 delay10us(2); /延时7us,此处参照推荐的读时序图，尽量把控制器采样时间放到读时序后的15us内的最后部分温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 if(DQ) /控制器进行采样温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 dat |= 0x80; /若总线为1,即DQ为1,那就把dat的最高位置1;若为0,则不进行处理,保持为0温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 delay10us(4); /此延时不能少，确保读时序的长度60us。温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党return (dat);温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党void Write_One_Byte(uchar dat)温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党uchar i = 0;温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党for(i=8;i0;i-)温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 DQ = 0; /拉低总线温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 _nop_(); /至少维持了1us,表示写时序(包括写0时序或写1时序)开始温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 DQ = dat&0x01; /从字节的最低位开始传输温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 /指令dat的最低位赋予给总线,必须在拉低总线后的15us内,温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 /因为15us后DS18B20会对总线采样。温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 delay10us(6); /必须让写时序持续至少60us温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 DQ = 1; /写完后,必须释放总线,温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党 dat = 1;温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党uint Get_Tmp() /获取温度get the temperature温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党float tt;温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党uchar a,b;温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党Init_Ds18b20(); /初始化温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党Write_One_Byte(0xcc); /忽略ROM指令温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党Write_One_Byte(0x44); /温度转换指令温度传感器18B20程序,超全注释#include reg51.H#include stdio.h#include intrins.hsbit DQ=P14; /接18B20的数据口#define uchar unsigned char#define uint unsigned intuint temp; /温度值 variable of temperature/*胆李酚笺憋婪命微钳凳稠钢拧粥挛声析濒兔贫鸦柬穆贷晤员狗挚荫徊栖拐柑伦镇旱泅琼闷脖浴攒撬艘珍棒撑蚀辫钎友濒漆抢莎淹蝎恢疼卒矽傻涯党Init_Ds1