ST1202_CHAN_ENABLE_HIGH
ret = st1202_read_reg(chip, ST1202_CHAN_ENABLE_HIGH, &chan_high);
ret = st1202_write_reg(chip, ST1202_CHAN_ENABLE_HIGH, chan_high);
ret = st1202_write_reg(chip, ST1202_CHAN_ENABLE_HIGH, ST1202_CHAN_DISABLE_ALL);