{"id":810497,"url":"http://patchwork.ozlabs.org/api/patches/810497/?format=json","web_url":"http://patchwork.ozlabs.org/project/osmocom-bb/patch/CA+yUT98Mwg+r1Btfn905+5P8tp-cMMBCeD9qDD5ByuC3iJb0bg@mail.gmail.com/","project":{"id":40,"url":"http://patchwork.ozlabs.org/api/projects/40/?format=json","name":"Osmocom Baseband development","link_name":"osmocom-bb","list_id":"baseband-devel.lists.osmocom.org","list_email":"baseband-devel@lists.osmocom.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"","list_archive_url":null,"date":"2017-09-06T10:28:44","name":"SDR_PHY question","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"b06e825916157fae939788b1d3e066bc051dcddf","submitter":{"id":72306,"url":"http://patchwork.ozlabs.org/api/people/72306/?format=json","name":"Adrian Musceac","email":"kantooon@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/osmocom-bb/patch/CA+yUT98Mwg+r1Btfn905+5P8tp-cMMBCeD9qDD5ByuC3iJb0bg@mail.gmail.com/mbox/","series":[{"id":1758,"url":"http://patchwork.ozlabs.org/api/series/1758/?format=json","web_url":"http://patchwork.ozlabs.org/project/osmocom-bb/list/?series=1758","date":"2017-09-06T10:28:44","name":"SDR_PHY question","version":1,"mbox":"http://patchwork.ozlabs.org/series/1758/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/810497/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/810497/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","baseband-devel@lists.osmocom.org"],"Delivered-To":["patchwork-incoming@bilbo.ozlabs.org","baseband-devel@lists.osmocom.org"],"Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=lists.osmocom.org\n\t(client-ip=2a01:4f8:191:444b::2:7; 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Wed, 6 Sep 2017 03:28:44 -0700 (PDT)"],"Received-SPF":"Pass (sender SPF authorized) identity=mailfrom;\n\tclient-ip=2607:f8b0:4001:c06::22c; helo=mail-io0-x22c.google.com;\n\tenvelope-from=kantooon@gmail.com;\n\treceiver=baseband-devel@lists.osmocom.org ","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;\n\th=mime-version:from:date:message-id:subject:to;\n\tbh=fGVQW9ZLCRxrlbhyepbDC0CsHbElcMQBnz5AKvR3zBI=;\n\tb=fQ9G2NSoogCncC34pTb5Uig7c73yOJMFt/tlZOJeIeIsItRqOoDhsx2WP9WqWrRPPR\n\t7w9v1x4wzoBxYp7j7YRRyIqXylJ1EI4IkcsErdmlYYv5N66Wi9Zv8gHGS6n1TDJUl4h3\n\tqXZP3grwPNRb2nIPVldcRpHjoW9X18nB/FgVTCkDGPzCJ0lXjrfIelxTUf8J3Knr84IQ\n\tjSkZQkJAJUrcJuIqbQnHmSTSohe9FBZWsBAIQF6M44gXJDsd+pnQQqRLBHfmM+gSNC89\n\tyXaJzk1nO9f1yDGymiLYdI3foj/O+PK7ZVnXiCXqDD4G0JZXhYyngpnUu83MJZR/XT0u\n\tDa8Q==","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:mime-version:from:date:message-id:subject:to;\n\tbh=fGVQW9ZLCRxrlbhyepbDC0CsHbElcMQBnz5AKvR3zBI=;\n\tb=rNXsCI91/irsvNM8JgGwNdDho4POnAq02Jx9YrqJmu2YTskKtbWD9xB/O7sa4w/kV1\n\tC1KgCY1lvLFf6lVEM+Osw/rDqDWR3XDFY4FmI1C6RzLeiq5e/qls1eSjnkR8BteGtbbN\n\tYrXvQjnPhsMvIVeqbQ7aSmA3trYp8/ccxLwOxSCAZmR0KvLuFVkXL+0xjk4llQN+mN0t\n\txphVXffREzxXtjieSwL2l9ocZmTDuLgNpgjTrZfIbWmdS2+icy8hTtfxE5zpolNWLssi\n\ttlB3ZIFIU3TW4kD27fA1xYqwzzEudl3M94EJjPyHLZvY3bGBMBCVCnjpGna3b0AeYG+3\n\tHw6w==","X-Gm-Message-State":"AHPjjUgG7Tm1Kdu1W49wRAz04r9BNPfKpRAW+bcsDr3CpBQs+eP2herQ\n\t/Wzx00E1CKMgt6BdR3Cgk7WL/MobKrdB","X-Google-Smtp-Source":"AOwi7QAUVHbz1m4mqyMRMmuK2akonbJVmODkt2rxCcWExEWkF/+vJumaglKQ/0FXBi5mmVQ+GPKkSZxnCDN6cO4Ob7Q=","X-Received":"by 10.107.47.93 with SMTP id j90mr2071435ioo.269.1504693724873; \n\tWed, 06 Sep 2017 03:28:44 -0700 (PDT)","MIME-Version":"1.0","From":"Adrian Musceac ","Date":"Wed, 6 Sep 2017 11:28:44 +0100","Message-ID":"","Subject":"SDR_PHY question","To":"baseband-devel@lists.osmocom.org","Content-Type":"text/plain; charset=\"UTF-8\"","X-BeenThere":"baseband-devel@lists.osmocom.org","X-Mailman-Version":"2.1.23","Precedence":"list","List-Id":"OsmocomBB - open source GSM baseband firmware\n\t","List-Unsubscribe":", \n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":", \n\t","Errors-To":"baseband-devel-bounces@lists.osmocom.org","Sender":"\"baseband-devel\" "},"content":"Hello,\n\nI am interested in the sdr_phy work being done currently, and I'm\ntrying to get it set up on my computer. I built osmo-trx from the ms\nbranch and implemented a crude power measurement command. When running\ntrxcon everything works fine, I get power indications for channels,\nand then when the mobile app is trying to sync to an ARFCN I start\nhaving issues.\n\nThe FCCH bursts are decoded fine, and so are the SCH bursts (which I\ncan also see in the osmo-trx terminal). I had to change the code of\ntrxcon in order for SCH to work, because the bit values were inverted\n(0 was 1 and viceversa). I am attaching the changes at the end of the\nmessage.\n\nUnfortunately, the BCCH and CCCH bursts are not decoded:\n<0006> sched_lchan_sch.c:98 Received SCH: bsic=30, fn=1116799, sched_fn=1116798\n<0006> sched_lchan_xcch.c:69 Data received on BCCH: fn=1116800 ts=0 bid=0\n<0006> sched_lchan_xcch.c:69 Data received on BCCH: fn=1116801 ts=0 bid=1\n<0006> sched_lchan_xcch.c:69 Data received on BCCH: fn=1116802 ts=0 bid=2\n<0006> sched_lchan_xcch.c:69 Data received on BCCH: fn=1116803 ts=0 bid=3\n<0006> sched_lchan_xcch.c:117 Received bad data frame at fn=1116800\n(2/51) for BCCH with 66 errors\n\nIt appears as if the deinterleaving in gsm0503_xcch_decode does not\nwork... could be the order of bursts?\n\nI'd appreciate any help here. I'm also ready to share the changes I've\nmade to osmo-trx/ms and trxcon.\n\nBest regards,\nAdrian\n\n *\n@@ -392,7 +397,7 @@ int trx_if_cmd_measure(struct trx_instance *trx,\n LOGP(DTRX, LOGL_ERROR, \"ARFCN %d not defined\\n\", arfcn_start);\n return -ENOTSUP;\n }\n-\n+ trx_ctrl_cmd(trx, 1, \"RXTUNE\", \"%d\", freq10 * 100);\n return trx_ctrl_cmd(trx, 1, \"MEASURE\", \"%d\", freq10 * 100);\n }\n\n@@ -421,6 +426,7 @@ static void trx_if_measure_rsp_cb(struct\ntrx_instance *trx, char *resp)\n arfcn == trx->pm_arfcn_stop);\n\n /* Schedule a next measurement */\n+ usleep(50000);\n if (arfcn != trx->pm_arfcn_stop)\n trx_if_cmd_measure(trx, ++arfcn, trx->pm_arfcn_stop);\n }\n@@ -558,9 +564,9 @@ static int trx_data_rx_cb(struct osmo_fd *ofd,\nunsigned int what)\n /* Copy and convert bits {254..0} to sbits {-127..127} */\n for (i = 0; i < 148; i++) {\n if (buf[8 + i] == 255)\n- bits[i] = -127;\n+ bits[i] = 127;\n else\n- bits[i] = 127 - buf[8 + i];\n+ bits[i] = -127 + buf[8 + i];\n }","diff":"diff --git a/src/host/trxcon/trx_if.c b/src/host/trxcon/trx_if.c\nindex 6a84af6..def571c 100644\n--- a/src/host/trxcon/trx_if.c\n+++ b/src/host/trxcon/trx_if.c\n@@ -325,6 +325,11 @@ int trx_if_cmd_setslot(struct trx_instance *trx,\nuint8_t tn, uint8_t type)\n return trx_ctrl_cmd(trx, 1, \"SETSLOT\", \"%d %d\", tn, type);\n }\n\n+int trx_if_cmd_sync(struct trx_instance *trx, uint8_t type)\n+{\n+ return trx_ctrl_cmd(trx, 1, \"SYNC\", \"%d\", type);\n+}\n+\n /*\n * Tuning Control\n","prefixes":[]}