51單片機只能藍牙控制電機正轉(zhuǎn)，無法反轉(zhuǎn)

ID:526810 · 發(fā)表于 2019-7-15 23:14

最近在做一個藍牙遙控小車，有一個輪子接好線后立刻開始轉(zhuǎn)動，然后用手機連接藍牙后，隨便按一個設(shè)定的按鍵那個輪子就停轉(zhuǎn)，之后再用藍牙遙控就只能正轉(zhuǎn)不能反轉(zhuǎn)了。只有這一個輪子有這情況，其他的都沒問題，請問是哪里出問題了。
驅(qū)動用的是l298n，藍牙模塊hc-05，單片機代碼如下

單片機源程序如下:
include <reg51.h>
#define uint unsigned int
#define uchar unsigned char

sbit out1=P1^0;
sbit out2=P1^1;
sbit out3=P1^2;
sbit out4=P1^3;
sbit out5=P1^4;
sbit out6=P1^5;
sbit out7=P1^6;
sbit out8=P1^7;
sbit ea1=P0^0;
sbit ea2=P0^1;
sbit ea3=P0^2;
sbit ea4=P0^3;

void qianjin()
{
out1=1;out2=0; ea1=1;
out3=1;out4=0; ea2=1;
out5=1;out6=0; ea3=1;
out7=1;out8=0; ea4=1;
}
void houtui()
{
out1=0;out2=1; ea1=1;
out3=0;out4=1; ea2=1;
out5=0;out6=1; ea3=1;
out7=0;out8=1; ea4=1;
}
void youzhuan()
{
out1=1;out2=0;ea1=1;
out3=0;out4=1;ea2=1;
out5=1;out6=0;ea3=1;
out7=0;out8=1;ea4=1;
}
void zuozhuan()
{
out1=0;out2=1;ea1=1;
out3=1;out4=0;ea2=1;
out5=0;out6=1;ea3=1;
out7=1;out8=0;ea4=1;
}
void tingzhi()
{
out1=0;out2=0;ea1=0;
out3=0;out4=0;ea2=0;
out5=0;out6=0;ea3=0;
out7=0;out8=0;ea4=0;
}
void zuoyi()
{
out1=1;out2=0;ea1=1;
out3=0;out4=1;ea2=1;
out5=0;out6=1;ea3=1;
out7=1;out8=0;ea4=1;
}
void youyi()
{
out1=0;out2=1;ea1=1;
out3=1;out4=0;ea2=1;
out5=1;out6=0;ea3=1;
out7=0;out8=1;ea4=1;
}

void init()
{
IE=0x90;
SCON=0x50;
TMOD=0x20;
TH1=0xf4;
TL1=0xf4;
TCON=0x40;
TR1=1;
ES = 1;
EA=1;
}

void main()
{
init();

while(1)
{

}
}

void time() interrupt 4
{

if(RI)
{
RI=0;
switch(SBUF)
{
case 'w':qianjin();break;
case 's':houtui();break;

case 'a':zuozhuan();break;
case 'd':youzhuan();break;

case 'q':zuoyi();break;
case 'e':youyi();break;

case '0':tingzhi();break;

}
}
}

ID:332444 · 發(fā)表于 2019-7-16 09:19

排查故障有2種手法,1軟件2硬件或反過來查也一樣,先把電機換一個試看.

ID:123289 · 發(fā)表于 2019-7-16 09:42

怎么想的呢，不用藍牙，單獨運行，能否正反轉(zhuǎn)呢？

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51單片機只能藍牙控制電機正轉(zhuǎn)，無法反轉(zhuǎn)

51單片機只能藍牙控制電機正轉(zhuǎn)，無法反轉(zhuǎn)