4 Replies Latest reply on Feb 26, 2015 10:24 AM by MichaelF_56 Branched to a new discussion.

    BCM20737S recovery problems

      Hi

       

      We have made our custom board with BCM20737S. I've difficult to download firmware (via WICED IDE) and recover firmware.

      Download never works (i already created a specific discussion for that) and recovery time to time.

       

      As soon i downloaded firmware in recovery mode, parts always boots correctly.

       

      download log is mentionning :

       

      Downloaded 0 code bytes ( 0.0%) and 0 data bytes ( 0.0%). Verified 0 code bytes ( 0.0%) and 0 data bytes ( 0.0%).   Current state: Terminated with error

      Failed to execute HCI Reset

       

      sequence to enter in recovery :

           - unplugging everything

           - reset + boot (short to SDA) push

           - powering up chip (USB powered) and connecting uart to PC

           - reset release (boot still pushed)

           - release boot

       

      it works time to time.

       

      WICED IDE make target : WICED_SENSE-BCM920737TAG_Q32 recover UART=COM2

      Uart is the right port.

       

      do you know what is this message : Failed to execute HCI Reset ?

      do you know if this download impossibility / recovery difficulty can be caused by windows drivers ? (i'm using CYPRESS usb to uart bridge)


      thanks a lot

       

      Best regards