弄的这个超声波测距运行不了，求解答 -

#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
#include <intrins.h>
#include "eeprom52.h"
uchar code smg_du[]={0x28,0xee,0x32,0xa2,0xe4,0xa1,0x21,0xea,0x20,0xa0,0x64,0x38,0xfd,
0x60,0x25,0x39,0x26,0x31,0x71,0xff};
uchar dis_smg[8] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8};
sbit smg_we1 = P3^4;
sbit smg_we2 = P3^5;
sbit smg_we3 = P3^6;
sbit smg_we4 = P3^7;
sbit c_send = P3^2;
sbit c_recive = P3^3;
sbit beep = P2^3;
uchar smg_i = 3;
bit flag_300ms;
long distance;
uint set_upper = 400;
uint set_lower = 1;
uchar flag_csb_juli;
uint flag_time0;
uchar menu_1;
void delay_1ms(uint q)
{
uint i,j;
for(i=0;i<q;i++)
for(j=0;j<120;j++);
}
void smg_display() {
if(menu_1 == 0) {
dis_smg[0] = smg_du[distance % 10];
dis_smg[1] = smg_du[distance / 10 % 10];
dis_smg[2] = smg_du[distance / 100 % 10] & 0xdf;
}
else if(menu_1 == 1) {
dis_smg[0] = smg_du[set_upper % 10];
dis_smg[1] = smg_du[set_upper / 10 % 10];
dis_smg[2] = smg_du[set_upper / 100 % 10] & 0xdf;
dis_smg[3] = smg_du[10];
}
else if(menu_1 == 2) {
dis_smg[0] = smg_du[set_lower % 10];
dis_smg[1] = smg_du[set_lower / 10 % 10];
dis_smg[2] = smg_du[set_lower / 100 % 10] & 0xdf;
dis_smg[3] = smg_du[11];
}
}
void write_eeprom() {
SectorErase(0x2000);
byte_write(0x2000, set_upper % 256);
byte_write(0x2001, set_upper / 256);
byte_write(0x2002, set_lower % 256);
byte_write(0x2003, set_lower / 256);
byte_write(0x2058, a_a);
}
void read_eeprom() {
set_upper = byte_read(0x2001);
set_upper <<= 8;
set_upper |= byte_read(0x2000);
set_lower = byte_read(0x2003);
set_lower <<= 8;
set_lower |= byte_read(0x2002);
a_a = byte_read(0x2058);
}
void init_eeprom() {
read_eeprom();
if(a_a != 1) { //首次初始化
set_upper = 300;
set_lower = 30;
a_a = 1;
write_eeprom();
}
}
sbit KEY_SET = P2^0;
sbit KEY_ADD = P2^1;
sbit KEY_SUB = P2^2;
void key() {
static uchar key_new;
key_can = 20;
if(KEY_SET == 0 || KEY_ADD == 0 || KEY_SUB == 0) {
delay_1ms(1);
if((KEY_SET == 0 || KEY_ADD == 0 || KEY_SUB == 0) && (key_new == 1)) {
key_new = 0;
if(KEY_SET == 0) key_can = 1;
else if(KEY_ADD == 0) key_can = 2;
else if(KEY_SUB == 0) key_can = 3;
}
} else {
key_new = 1;
}
}
void key_with() {
if(key_can == 1) {
menu_1++;
if(menu_1 > 2) {
menu_1 = 0;
smg_i = 3;
} else if(menu_1 == 1) {
smg_i = 4;
} else if(menu_1 == 2) {
smg_i = 4;
}
}
if(menu_1 == 1) {
if(key_can == 2) {
set_upper = (set_upper >= 400) ? 400 : set_upper + 1;
} else if(key_can == 3) {
set_upper = (set_upper <= 1) ? 1 : set_upper - 1;
}
write_eeprom();
} else if(menu_1 == 2) {
if(key_can == 2) {
set_lower = (set_lower >= 400) ? 400 : set_lower + 1;
} else if(key_can == 3) {
set_lower = (set_lower <= 1) ? 1 : set_lower - 1;
}
dis_smg[0] = smg_du[set_d % 10];
dis_smg[1] = smg_du[set_d / 10 % 10] ;
dis_smg[2] = smg_du[set_d / 100 % 10] & 0xdf ;
dis_smg[3] = 0x60; //a
write_eeprom();
}
}
void clock_h_l() {
static uchar value;
if(distance >= set_upper || distance <= set_lower) {
value++;
if(value >= 2) {
beep = ~beep;
}
} else {
value = 0;
beep = 1;
}
}
void smg_we_switch(uchar i)
{
switch(i)
{
case 0: smg_we1 = 0; smg_we2 = 1; smg_we3 = 1; smg_we4 = 1; break;
case 1: smg_we1 = 1; smg_we2 = 0; smg_we3 = 1; smg_we4 = 1; break;
case 2: smg_we1 = 1; smg_we2 = 1; smg_we3 = 0; smg_we4 = 1; break;
case 3: smg_we1 = 1; smg_we2 = 1; smg_we3 = 1; smg_we4 = 0; break;
}
}
void display()
{
static uchar i;
i++;
if(i >= smg_i)
i = 0;
smg_we_switch(i);
P1 = dis_smg[i];
}
void delay()
{
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
}
void send_wave()
{
c_send = 1;
delay();
c_send = 0;
TH0 = 0;
TL0 = 0;
TR0 = 0;
while(!c_recive);
TR0=1;
while(c_recive)
{
flag_time0 = TH0 * 256 + TL0;
if((flag_time0 > 40000))
{
TR0 = 0;
flag_csb_juli = 2;
distance = 888;
break ;
}
else
{
flag_csb_juli = 1;
}
}
if(flag_csb_juli == 1)
{
TR0=0;
distance =flag_time0;
distance *= 0.017;
if((distance > 500))
{
distance = 888;
}
}
}
void time_init()
{
EA = 1;
TMOD = 0X11;
ET0 = 0;
TR0 = 1;
ET1 = 1;
TR1 = 1;
}
void main() {
beep = 0;
delay_1ms(150);
P0 = P1 = P2 = P3 = 0xff;
time_init();
init_eeprom();
while(1) {
if(flag_300ms) {
flag_300ms = 0;
clock_h_l();
if(beep == 1) send_wave();
if(menu_1 == 0) smg_display();
}
key();
if(key_can < 10) key_with();
}
}
void time1_int() interrupt 3
{
static uchar value;
TH1 = 0xf8;
TL1 = 0x30;
display();
value++;
if(value >= 150)
{
value = 0;
flag_300ms = 1;
}
}

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