What resources are used by the device os on the msom? I know that the I2C (Wire) must be locked because there is a PowerManager thread that communicates with a FuelGauge and PMIC, but are there are any other resources that are used? Is SPI ever used by the device os in a way that could conflict with user code?
The msom has an IC for QSPI Flash memory, does that require the user to lock SPI or SPI1 or is that a separate bus?