fixeria has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmocom-bb/+/14691
Change subject: trx_toolkit/rand_burst_gen.py: use TrainingSeqGMSK and
BurstType enums
......................................................................
trx_toolkit/rand_burst_gen.py: use TrainingSeqGMSK and BurstType enums
Change-Id: I8a3faceae4a8d9b57d86d42600db839da073dad6
---
M src/target/trx_toolkit/rand_burst_gen.py
1 file changed, 16 insertions(+), 56 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmocom-bb refs/changes/91/14691/1
diff --git a/src/target/trx_toolkit/rand_burst_gen.py
b/src/target/trx_toolkit/rand_burst_gen.py
index 46c1e09..80ff3f2 100644
--- a/src/target/trx_toolkit/rand_burst_gen.py
+++ b/src/target/trx_toolkit/rand_burst_gen.py
@@ -28,50 +28,6 @@
class RandBurstGen:
- # GSM 05.02 Chapter 5.2.3 Normal Burst
- nb_tsc_list = [
- [
- 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0,
- 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1,
- ],
- [
- 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1,
- 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1,
- ],
- [
- 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1,
- 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0,
- ],
- [
- 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0,
- 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0,
- ],
- [
- 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0,
- 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1,
- ],
- [
- 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0,
- 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0,
- ],
- [
- 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1,
- 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1,
- ],
- [
- 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0,
- 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0,
- ],
- ]
-
- # GSM 05.02 Chapter 5.2.5 SCH training sequence
- sb_tsc = [
- 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0,
- 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
- 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1,
- 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1,
- ]
-
# GSM 05.02 Chapter 5.2.6 Dummy Burst
db_bits = [
0, 0, 0,
@@ -87,15 +43,13 @@
0, 0, 0,
]
- # GSM 05.02 Chapter 5.2.7 Access burst
- ab_tsc = [
- 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1,
- 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0,
- 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
- ]
+ # Pick a random TSC for a given burst type
+ def get_rand_tsc(self, bt):
+ tsc_list = filter(lambda seq: seq.bt == bt,
list(TrainingSeqGMSK))
+ return random.choice(tsc_list)
# Generate a normal burst
- def gen_nb(self, seq_idx = 0):
+ def gen_nb(self, tsc = None):
buf = []
# Tailing bits
@@ -109,7 +63,9 @@
buf.append(random.randint(0, 1))
# Training sequence
- buf += self.nb_tsc_list[seq_idx]
+ if tsc is None:
+ tsc = self.get_rand_tsc(BurstType.NORMAL)
+ buf += tsc.seq
# Steal flag 2 / 2
buf.append(random.randint(0, 1))
@@ -128,7 +84,7 @@
return [0] * GSM_BURST_LEN
# Generate a synchronization burst
- def gen_sb(self):
+ def gen_sb(self, tsc = None):
buf = []
# Tailing bits
@@ -139,7 +95,9 @@
buf.append(random.randint(0, 1))
# Training sequence
- buf += self.sb_tsc
+ if tsc is None:
+ tsc = self.get_rand_tsc(BurstType.SYNC)
+ buf += tsc.seq
# Random data 2 / 2
for i in range(0, 39):
@@ -155,14 +113,16 @@
return self.db_bits
# Generate an access burst
- def gen_ab(self):
+ def gen_ab(self, tsc = None):
buf = []
# Tailing bits
buf += [0] * 8
# Training sequence
- buf += self.ab_tsc
+ if tsc is None:
+ tsc = self.get_rand_tsc(BurstType.ACCESS)
+ buf += tsc.seq
# Random data
for i in range(0, 36):
--
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Gerrit-Project: osmocom-bb
Gerrit-Branch: master
Gerrit-Change-Id: I8a3faceae4a8d9b57d86d42600db839da073dad6
Gerrit-Change-Number: 14691
Gerrit-PatchSet: 1
Gerrit-Owner: fixeria <[email protected]>
Gerrit-MessageType: newchange
