Question

keil的报错 error c141:syntax error near')'

#include "reg51.h"

#define DATA_BUS (P0)

#define RS (P2_bit.P2_0)
#define RW (P2_bit.P2_1)
#define E (P2_bit.P2_2)
typedef unsigned char uchar;

typedef unsigned int uint;
void check_busy(void);

void write_command(uchar com);
void write_data(uchar data); <<<<<<<<报错所在的行
void LCD_init(void);
void string(uchar ad ,uchar *s);
void lcd_test(void);
void delay(uint);
void main(void)

{ LCD_init();
while(1)
{ string(0x80,"Have a nice day!");
string(0xC0," Proteus VSM");
delay(100);
write_command(0x01);
delay(100);
}
}
void delay(uint j)

{ uchar i = 60;
for(; j>0; j--)
{ while(--i);
i = 59;
while(--i);
i = 60;
}
}
void check_busy(void)

{ do
{ DATA_BUS = 0xff;
E = 0;
RS = 0;
RW = 1;
E = 1;
__no_operation();
} while(DATA_BUS & 0x80);
E = 0;
}

void write_command(uchar com)
{ check_busy();
E = 0;
RS = 0;
RW = 0;
DATA_BUS = com;
E = 1;
__no_operation();
E = 0;
delay(1);
}

void write_data(uchar data)
{ check_busy();
E = 0;
RS = 1;
RW = 0;
DATA_BUS = data;
E = 1;
__no_operation();
E = 0;
delay(1);
}

void LCD_init(void)
{ write_command(0x38); // 8-bits, 2 lines, 7x5 dots
write_command(0x0C); // no cursor, no blink, enable display
write_command(0x06); // auto-increment on
write_command(0x01); // clear screen
delay(1);
}

void string(uchar ad, uchar *s)
{ write_command(ad);
while(*s>0)
{ write_data(*s++);
delay(100);
}
}

Answer 1

data 是系统保留字， 不能做为自定义的变量名。 你把它换个名字就可以了。

Answer 2

参数名不要用data，换个名字。data在KEIL中是个关键字