Date: Wed, 26 Aug 2020 10:16:28 +0200 (CEST) From: Wojciech Puchar <wojtek@puchar.net> To: freebsd-hackers@freebsd.org Subject: USB experts help needed Message-ID: <alpine.BSF.2.20.2008261012170.79099@puchar.net>
next in thread | raw e-mail | index | archive | help
i am implementing my own "mass storage device" (actually fake but doesn't matter) on microcontroller. I already finished implementing control endpoint part so it is properly detected configured itp. But i have no idea why i'm getting USB reset after successful reply to "get max lun" control endpoint command (0xFE). i reply with one byte of zero according to USB mass storage specs. below is log from my microcontroller's program USB: RESET USB: Setting USB address 6 USB: Host received response from control interface. USB: Sending config descriptor 0100:8 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0100:18 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0300:2 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0300:4 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0301:2 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0301:32 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0302:2 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0302:12 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0200:9 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0200:32 bytes. USB: Host received response from control interface. USB: Set configuration 1 received. USB: Host received response from control interface. USB: Mass storage get MAX LUN received. USB: Host received response from control interface. USB: RESET ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ USB: Setting USB address 6 USB: Host received response from control interface. USB: Sending config descriptor 0100:8 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0100:18 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0200:9 bytes. USB: Host received response from control interface. USB: Sending config descriptor 0200:32 bytes. USB: Host received response from control interface. USB: Set configuration 1 received. USB: Host received response from control interface. USB: Mass storage reset received. USB: Host received response from control interface. USB: Clear endpoint 1 received. USB: Host received response from control interface. . . . after reset FreeBSD seems to again perform initialization without asking for amount of LUN again the last "clear endpoint 1" is because i don't have endpoint 1 implemented yet
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?alpine.BSF.2.20.2008261012170.79099>