两个单片机之间使用SPI通信有何问题

//头文件# include //头文件# define uchar unsigned char# define uint unsigned int***it SCK = P1^0;//位定义时钟***it CS = P1^1;//位定义片选(使能)***it SDI = P1^2;//位定义Input***it SDO = P1^3;//位定义Outputuchar dat, dat0, dat1, b...