aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorVadim Yanitskiy <axilirator@gmail.com>2018-09-07 19:09:12 +0700
committerPiotr Krysik <ptrkrysik@gmail.com>2018-09-13 15:35:44 +0200
commit562125270bff1bc6181989607426b803523c420a (patch)
tree4fc398cd8e4711158b38a804d43ba407fb2e4090
parent9e46c4807dd48629469e3c7587c13b98162acd49 (diff)
apps/grgsm_trx: fix inaccurate sample rate calculation
-rwxr-xr-xapps/grgsm_trx2
-rw-r--r--python/trx/radio_if.py3
2 files changed, 4 insertions, 1 deletions
diff --git a/apps/grgsm_trx b/apps/grgsm_trx
index 45312e6..6efed07 100755
--- a/apps/grgsm_trx
+++ b/apps/grgsm_trx
@@ -46,7 +46,7 @@ class Application:
base_port = 6700
# PHY specific
- phy_sample_rate = 4 * 1625000 / 6
+ phy_sample_rate = radio_if.SAMPLE_RATE
phy_freq_offset_hz = None
phy_tx_antenna = "TX/RX"
phy_rx_antenna = "RX2"
diff --git a/python/trx/radio_if.py b/python/trx/radio_if.py
index 407e724..2aeb49a 100644
--- a/python/trx/radio_if.py
+++ b/python/trx/radio_if.py
@@ -75,6 +75,9 @@ class radio_if(gr.top_block):
GSM_TS_PERIOD_uS = GSM_SYM_PERIOD_uS * 156.25
GSM_UL_DL_SHIFT_uS = -(GSM_TS_PERIOD_uS * 3)
+ # TODO: explain where do these values come from?
+ SAMPLE_RATE = 4.0 * 1625000.0 / 6.0
+
# FIXME: shall be measured (automatically?) for
# particular device and particular clock rate.
# The current value is measured for USRP B2X0 at 26e6.