write_com0x80必须空一个格，要不然乱码Delay8Displayfreque
twrite_com0x90Delay8Displayphasemeasurewrite_com0x88Delay8Displayamplitude1write_com0x98Delay8Displayamplitude2
voidscree
ucharfreque
tucharphasemeasureucharamplitude1ucharamplitude2write_com0x01spri
tffreque
t