dac_write 0x2f 0x0001
dac_write 0x30 0x7fff
dac_write 0x0D 0x0400
dac_write 0x02 0x20C2
dac_write 0x02 0x20D2
dac_write 0x12 0x0000
dac_write 0x13 0x0000
dac_write 0x14 0xE50D
dac_write 0x15 0x9435
dac_write 0x16 0x50D7
dac_write 0x17 0xE50D
dac_write 0x18 0x9435
dac_write 0x19 0x50D7

dac_write 0x1F 0x2220