BUSY
#define BUSY 0x80000000
#define BUSY 0x80
BUSY,
#define BUSY 12
BUSY
BUSY = 2, // executing I2C command
#define BUSY (1 << 0)
#define BUSY 0x01
#define BUSY 0x4044
#define BUSY 0x04
#define BUSY PP_STAT_ERR /* Interface Busy. */
#define BUSY (1UL << 0)
#define BUSY (1UL << 0)