XC5 Theory of Operation

this section describes how specific components operate on the xc2055 and xc4055 on board leds the four on board leds have the following indicators led indication green power ( pwr ) displays when the board is powered up and not in reset mode flashes during firmware update process green file system activity ( bsy ) flashes any time there is file system activity (on any storage device) blue ( wifi ) illuminates when wifi is connected and flashes when searching for a connection red status ( err ) flashes a certain number of times to indicate which error is occurring the flash codes are described below 2 unspecified error 3 network recovery script is preparing to run on a device configured for network recovery 4 no upgrade file found 5 failed to load kernel module \ 6 board is not capable of running the current firmware version \ 7 a piece of on board hardware is not working correctly \ 8 problem related to the storage device (either the usb drive or microsd card) \ 9 problem related to the registry/nand \ 10 the autorun script encountered a load/run error \ 11 wifi related error \ 12 unable to find bootable image a solid error light is displayed during the micro controller update in bos 9 0 36 updating from an earlier os version to bos 9 0 36 or later will trigger this light on board switch / svc button the svc button is connected to the gpp d6 gpio on the processor the reset button is also sent to the pmic (support micro), which when the button is asserted for four seconds will initiate a hard reset reset switch / gpio button the reset button is connected to the gpp d5 gpio on the processor the reset button is also sent to the pmic (support micro), which when the button is asserted for four seconds will initiate a hard reset microsd slot the xc2055 and xc4055 have one microsd slot high density memory cards with a capacity of up to 2tb, and sdr104 and microsc3 0 uhs i ultra high speed memory cards, are supported wireless module the xc2055 and xc4055 both have a dual antenna connection to allow users to install a brightsign wireless module without disassembling the unit brightsign modules are configured to work with 802 11 n or 802 11 ac access points this connection has a bluetooth option