怎么修改啊我沒有看懂，是按照書上來(lái)得但就是不對(duì)
ZXM02.c(21): error C202: 'north_south_time': undefined identifier
ZXM02.c(27): error C202: 'east_weat_red': undefined identifier
ZXM02.c(33): error C141: syntax error near 'north_south_yellow'
ZXM02.c(36): error C141: syntax error near 'north_south_yellow'
ZXM02.c(58): error C202: 'noeth_south_time': undefined identifier
單片機(jī)源程序如下:
- #include <reg51.h>
- #include <intrins.h>
- typedef unsigned char Uchar;
- typedef unsigned int Uint;
- #define ledport P0
- #define nort_south_time P1
- #define east_west_time P2
- sbit north_south_red=P0^0;
- sbit north_south_yellow=P0^1;
- sbit north_south_green=P0^2;
- sbit east_west_red=P0^3;
- sbit east_west_yellow=P0^4;
- sbit east_west_green=P0^5;
- Uchar discode[]={ 0xC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,0X88,0X83,0XC6,0XA1,0X86,0X8E};
- void Delay_nms (Uint nms);
- void seg7_dis(Uchar Ntime);
- void main()
- { ledport=0xff;
- north_south_time=0xff;
- east_west_time=0xff;
- while(1)
- { north_south_green=0;east_west_red=0;
- seg7_dis(9);
- north_south_green=1;east_weat_red=1;
- north_south_yellow=0;east_west_yellow=0;
- seg7_dis(3);
- north_south_yellow=1;east_west_yellow=1;
- north_south_red=0;east_west_green=0;
- seg7_dis(9)
- north_south_yellow=0;east_west_yellow=0;
- north_south_red=1;east_west_green=1;
- seg7_dis(3)
- north_south_yellow=1;east_west_yellow=1;
- }
- }
- void Delay_nms(Uint nms) {
- Uchar i, j;
- do {
- _nop_();
- i=2;
- j=199;
- do
- {
- while (--j);
- } while (--i);
- }
- while(--nms);
- }
- void seg7_dis(Uchar Ntime)
- { Uchar tmp;
- do{
- tmp=discode[Ntime];
- noeth_south_time=tmp;
- east_west_time=tmp;
- Delay_nms(1000);
- }while(--Ntime);
- }
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