Change in osmocom-bb[master]: trxcon/trx_if.c: drop Timing Advance range limitation
Harald Welte has submitted this change and it was merged. ( https://gerrit.osmocom.org/10817 ) Change subject: trxcon/trx_if.c: drop Timing Advance range limitation .. trxcon/trx_if.c: drop Timing Advance range limitation Despite the correct range of Timing Advance value is [0..63], there is a special feature in OsmocomBB which allows one to simulate the distance between both MS and a BTS by playing with the signal delay. This is why a signed 'int8_t' type is used in L1CTL protocol. No need to limit the range, just forward it to TRX. Change-Id: I06774b315b8451bf14083da6b2849d6e8594abc8 --- M src/host/trxcon/trx_if.c 1 file changed, 3 insertions(+), 7 deletions(-) Approvals: Harald Welte: Looks good to me, approved Jenkins Builder: Verified diff --git a/src/host/trxcon/trx_if.c b/src/host/trxcon/trx_if.c index b3735c2..19d8c75 100644 --- a/src/host/trxcon/trx_if.c +++ b/src/host/trxcon/trx_if.c @@ -380,7 +380,9 @@ * advance calculated from requested TA value. This value is * normally between 0 and 63, with each step representing * an advance of one bit period (about 3.69 microseconds). - * CMD SETTA <0-63> + * Since OsmocomBB has a special feature, which allows one + * to spoof the distance from BTS, the range is extended. + * CMD SETTA <-128..127> * RSP SETTA */ @@ -390,12 +392,6 @@ if (trx->ta == ta) return 0; - /* Make sure that TA value is in valid range */ - if (ta < 0 || ta > 63) { - LOGP(DTRX, LOGL_ERROR, "TA value %d is out of allowed range\n", ta); - return -ENOTSUP; - } - return trx_ctrl_cmd(trx, 0, "SETTA", "%d", ta); } -- To view, visit https://gerrit.osmocom.org/10817 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmocom-bb Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: I06774b315b8451bf14083da6b2849d6e8594abc8 Gerrit-Change-Number: 10817 Gerrit-PatchSet: 2 Gerrit-Owner: Vadim Yanitskiy Gerrit-Reviewer: Harald Welte Gerrit-Reviewer: Jenkins Builder (102)
Change in osmocom-bb[master]: trxcon/trx_if.c: drop Timing Advance range limitation
Harald Welte has posted comments on this change. ( https://gerrit.osmocom.org/10817 ) Change subject: trxcon/trx_if.c: drop Timing Advance range limitation .. Patch Set 1: Code-Review+2 -- To view, visit https://gerrit.osmocom.org/10817 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmocom-bb Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I06774b315b8451bf14083da6b2849d6e8594abc8 Gerrit-Change-Number: 10817 Gerrit-PatchSet: 1 Gerrit-Owner: Vadim Yanitskiy Gerrit-Reviewer: Harald Welte Gerrit-Reviewer: Jenkins Builder (102) Gerrit-Comment-Date: Fri, 07 Sep 2018 09:01:55 + Gerrit-HasComments: No Gerrit-HasLabels: Yes
Change in osmocom-bb[master]: trxcon/trx_if.c: drop Timing Advance range limitation
Vadim Yanitskiy has uploaded this change for review. ( https://gerrit.osmocom.org/10817 Change subject: trxcon/trx_if.c: drop Timing Advance range limitation .. trxcon/trx_if.c: drop Timing Advance range limitation Despite the correct range of Timing Advance value is [0..63], there is a special feature in OsmocomBB which allows one to simulate the distance between both MS and a BTS by playing with the signal delay. This is why a signed 'int8_t' type is used in L1CTL protocol. No need to limit the range, just forward it to TRX. Change-Id: I06774b315b8451bf14083da6b2849d6e8594abc8 --- M src/host/trxcon/trx_if.c 1 file changed, 3 insertions(+), 7 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmocom-bb refs/changes/17/10817/1 diff --git a/src/host/trxcon/trx_if.c b/src/host/trxcon/trx_if.c index 89331f3..7e6f7b9 100644 --- a/src/host/trxcon/trx_if.c +++ b/src/host/trxcon/trx_if.c @@ -405,7 +405,9 @@ * advance calculated from requested TA value. This value is * normally between 0 and 63, with each step representing * an advance of one bit period (about 3.69 microseconds). - * CMD SETTA <0-63> + * Since OsmocomBB has a special feature, which allows one + * to spoof the distance from BTS, the range is extended. + * CMD SETTA <-128..127> * RSP SETTA */ @@ -415,12 +417,6 @@ if (trx->ta == ta) return 0; - /* Make sure that TA value is in valid range */ - if (ta < 0 || ta > 63) { - LOGP(DTRX, LOGL_ERROR, "TA value %d is out of allowed range\n", ta); - return -ENOTSUP; - } - return trx_ctrl_cmd(trx, 0, "SETTA", "%d", ta); } -- To view, visit https://gerrit.osmocom.org/10817 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmocom-bb Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I06774b315b8451bf14083da6b2849d6e8594abc8 Gerrit-Change-Number: 10817 Gerrit-PatchSet: 1 Gerrit-Owner: Vadim Yanitskiy