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Wed, 26 Aug 2020 10:35:31 +0200 (CEST) Subject: Re: USB experts help needed To: Wojciech Puchar , freebsd-hackers@freebsd.org References: From: Hans Petter Selasky Message-ID: <4276557d-8364-29de-6bdc-f9280008d847@selasky.org> Date: Wed, 26 Aug 2020 10:35:06 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4BbzhX5GJYz4rpw X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of hps@selasky.org designates 88.99.82.50 as permitted sender) smtp.mailfrom=hps@selasky.org X-Spamd-Result: default: False [-1.58 / 15.00]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+a:mail.turbocat.net]; NEURAL_HAM_LONG(-0.72)[-0.722]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[selasky.org]; ARC_NA(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-0.03)[-0.026]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_MEDIUM(-0.53)[-0.528]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:88.99.0.0/16, country:DE]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-hackers] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Aug 2020 08:35:41 -0000 On 2020-08-26 10:16, Wojciech Puchar wrote: > 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. > Are you sure the firmware on your device didn't crash and reboot? --HPS