如何编写一个C程序使51单片机LED灯按下列要求点亮

void main() { P1=0XFF; /*定义初始状态为全灭*/while(1) { delay(2000); P1=0X7e; delay(2000); P1=0Xbd; delay(2000);P1=0Xdb;delay(2000); P1=0Xe7; delay(2000); P1=0Xdb;delay(2000); P1=0Xbd;delay(2000); P1=0X7e; delay(2