ࡱ> =?<q` R(bjbjqPqP2,::k hhhhhhh|  |H suuuuuu$:h>ihg gghh qqqgh h sqgsqqhhq tc 5"qO$0HqWqqh3 0 "q  I g Hgggg||| ||| |||hhhhhh 89c51USGr:gCQvPWM z^  HYPERLINK "http://bbs.cepark.com/tag-PWM.html" \t "_blank" PWM,  HYPERLINK "http://bbs.cepark.com/tag-%E5%8D%95%E7%89%87%E6%9C%BA.html" \t "_blank" USGr:g,  HYPERLINK "http://bbs.cepark.com/tag-C%E8%AF%AD%E8%A8%80.html" \t "_blank" C,  HYPERLINK "http://bbs.cepark.com/tag-%E7%A8%8B%E5%BA%8F.html" \t "_blank"  z^,  HYPERLINK "http://bbs.cepark.com/tag-%E7%BC%96%E5%86%99.html" \t "_blank" Q  HYPERLINK "http://www.jiathis.com/share/" \t "_blank" RN0R  HYPERLINK "javascript:;" \o "RN0Rejm_ZS" ejm_ZS  HYPERLINK "javascript:;" \o "RN0RQQzz" QQzz  HYPERLINK "javascript:;" \o "RN0R__Q" __Q  HYPERLINK "javascript:;" \o "RN0RNNQ" NNQ f,g z^O(uSTC89C52RCUSGr:g 22.1184MHzvf/c O(u,g z^]O9e b/f(uegc6RvAm5u:gv YcNL298qR5u gbaV Y ""^_^ #include "reg52.H" #include "MyType.h" //=============L298zS[IN=============== sbit ENA = P3^6;//]nqRO sbit IN1 = P0^3;//]nў~- sbit IN2 = P0^4;//]n~~+ sbit IN3 = P0^5;//Sn~~- sbit IN4 = P0^6;//Snў~+) sbit ENB = P3^7;//SnqRO //=============PWM================ #define PWM_COUST 100//PWM~RI{N uchar MOTO_speed1;//]5u:gl uchar MOTO_speed2; //S5u:gl uchar PWM_abs1;//]5u:gS~[0.cklspeed<0.Sl-100~100 (uextern int abs(int val); S~[0) { IN1 =0;IN2 =1;//ckl } else if (speed1<0) { IN1 =1;IN2 =0;//Sl } //==============S5u:g======(*Z \ b d h j     L N R T V X $ & . 0 ҽҨҽҽҨҽҽҨҽҽҨҽҽҨҽmm)hachacB*CJKHOJQJ^Jph hachacCJKHOJQJ^J)jhachacCJKHOJQJU^J)hachacB*CJKHOJQJ^Jph333)hachacB*CJKHOJQJ^Jph2jhachacB*CJKHOJQJU^Jph&hachac5CJKH$OJQJ\^J*(V F J !p"%'((h(v(z(((($ddd$1$If[$\$a$gdac $1$a$gdac$dd1$@&[$\$a$gdac(0 2 4 8 : @ B F H P T l r *#0#(((ڴhachachacCJKHaJUhachacKHOJQJ^J hachacKHOJQJ^JaJ)hachacB*CJKHOJQJ^Jph)jhachacCJKHOJQJU^J hachacCJKHOJQJ^J#======= if (speed2>0) { IN3 =1;IN4 =0;//ckl } else if (speed2<0) { IN3 =0;IN4 =1;//Sl } } /****************************************************************** Tymotor_PWM() RPWM`SzzkQ Spee (ue ԏVe /******************************************************************/ void motor_PWM () { uchar PWM_abs1; uchar PWM_abs2; PWM_abs1=MOTO_speed1; PWM_abs2=MOTO_speed2; if (PWM_abs1>PWMAnd) ENA=1; //]5u:g`SzzkQ else ENA=0; if (PWM_abs2>PWMAnd) ENB=1; //S5u:g`SzzkQ else ENB=0; if (PWMAnd>=PWM_COUST) PWMAnd=0; //PWMpen else PWMAnd+=1; } /****************************************************************** Tyvoid TIME_Init () R[ehVRYS cN (ue ԏVe /******************************************************************/ void TIME_Init () { //=========[ehVT2RYS PWM================== T2CON = 0x00; T2MOD = 0x00; RCAP2H = 0xff;//[e0.1ms RCAP2L = 0x47; TH2 = 0xff; TL2 = 0x47; ET2 = 1;//[ehV2-Ne_ TR2 = 1;//PWM[ehVsQ PWMhTg:N10ms } /****************************************************************** Tyvoid PWM_Time2 () interrupt 5 RT2-Ne PWMc6R Spe (umotor_PWM();//PWM`SzzkQ ԏV /******************************************************************/ void PWM_Time2 () interrupt 5 { TR2 = 0; TF2 = 0; ET2 = 0;//[ehV0-Neybk motor_PWM();//PWM`SzzkQ ET2 = 1;//[e-Ne0_/T TR2 = 1; } main { TIME_Init () motor(50,50)//]S5u:gvl/f50 } (((6kd$$IfTr 64aT0182P. 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