I set PC working in saving-power model,after PC screen turned dark entering into sleep state for a long time,connection USB-SPI programmer to IDE becoming "unknown" from "Running",besides output windows showed:
Initialising execution environment for project 'CSR uEnergy - 'CSRMeshSwitch''
Failed to open PtTransport stream: Last PtTransport error 0, ÖØµþ I/O ²Ù×÷ÔÚ½øÐÐÖÐ¡£
: Driver IO timed out.
Failed trying to initialise SPI connection.
Transport options were [SPITRANS=USB SPIPORT=0]
what is it that caused this?