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GET /api/patches/810497/?format=api
{ "id": 810497, "url": "http://patchwork.ozlabs.org/api/patches/810497/?format=api", "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=api", "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": "<CA+yUT98Mwg+r1Btfn905+5P8tp-cMMBCeD9qDD5ByuC3iJb0bg@mail.gmail.com>", "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=api", "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=api", "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": "<baseband-devel-bounces@lists.osmocom.org>", "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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\n\tWed, 06 Sep 2017 03:28:44 -0700 (PDT)", "MIME-Version": "1.0", "From": "Adrian Musceac <kantooon@gmail.com>", "Date": "Wed, 6 Sep 2017 11:28:44 +0100", "Message-ID": "<CA+yUT98Mwg+r1Btfn905+5P8tp-cMMBCeD9qDD5ByuC3iJb0bg@mail.gmail.com>", "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<baseband-devel.lists.osmocom.org>", "List-Unsubscribe": "<https://lists.osmocom.org/mailman/options/baseband-devel>, \n\t<mailto:baseband-devel-request@lists.osmocom.org?subject=unsubscribe>", "List-Archive": "<http://lists.osmocom.org/pipermail/baseband-devel/>", "List-Post": "<mailto:baseband-devel@lists.osmocom.org>", "List-Help": "<mailto:baseband-devel-request@lists.osmocom.org?subject=help>", "List-Subscribe": "<https://lists.osmocom.org/mailman/listinfo/baseband-devel>, \n\t<mailto:baseband-devel-request@lists.osmocom.org?subject=subscribe>", "Errors-To": "baseband-devel-bounces@lists.osmocom.org", "Sender": "\"baseband-devel\" <baseband-devel-bounces@lists.osmocom.org>" }, "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": [] }