I2C SDA signal hangs low until a power off/on cycle or SCL is manually clocked. There are seven INA219s on the bus controlled by a DM3730. One of them appears to be the device hanging SDA low. The INA219's data sheet references a 28mSecond SMBus timeout. I would have thought the SMBus timeout feature would force the INA219 to release the SDA signal. How does the SMBus timeout work?
jib