typedef unsigned short WORD;
#define READ_RFR16(reg) ((((WORD) ##reg##H) << 8) + ##reg##L)
#define WRITE_RFR16(reg, value) do { ##reg##H = HIBYTE(value); ##reg##L = LOBYTE(value); } while (0)
上面这段代码里##大概代表什么意思啊,在C语言里##有没有特别的含义啊
还有下面也有##
#define IO_DIR_PORT_PIN(port, pin, dir) \
do { \
if (dir == IO_OUT) \
P##port##DIR |= (0x01<<(pin)); \
else \
P##port##DIR &= ~(0x01<<(pin)); \
}while(0) |
|
楼主
