#define BIT_SET(x,n) (x=x | (0x01<<n))
#define BIT_TEST(x,n) ((x & (0x01<<n))!=0)
#define BIT_CLEAR(x,n) (x=x & ~(0x01<<n))
/* 将 RGB 转变为 565 格式,手机屏幕常用 */
#define RGB2PIXEL(r,g,b) ((((r >> 3) & 0x1F) << 11) | (((g >> 2)&0x3F) << 5) | (((b >> 3)&0x1F)) | 0)
