REG_WDOG_AND_BOOT
ret = si2165_readreg8(state, REG_WDOG_AND_BOOT, val);
ret = si2165_writereg8(state, REG_WDOG_AND_BOOT, 0x00);
ret = si2165_readreg8(state, REG_WDOG_AND_BOOT, val);
ret = si2165_writereg8(state, REG_WDOG_AND_BOOT, 0x00);
ret = si2165_readreg8(state, REG_WDOG_AND_BOOT, val);
ret = si2165_writereg_mask8(state, REG_WDOG_AND_BOOT, 0x02, 0x02);
ret = si2165_readreg8(state, REG_WDOG_AND_BOOT, &val);