#define DISPLAY_SET_C_ADDR(c) DISPLAY_CMD=(0x00|((c)&0x0f)); \
DISPLAY_CMD=(0x10|(((c)&0x70)>>4))
#define DISPLAY_SET_MASTER DISPLAY_CMD=0x18
#define DISPLAY_SET_C_ADDR(c) DISPLAY_CMD=(0x00|((c)&0x0f)); \
DISPLAY_CMD=(0x10|(((c)&0x70)>>4))
#define DISPLAY_SET_MASTER DISPLAY_CMD=0x18