trx_interface: append two unused bytes at the end of messages
Despite the last two bytes at the end of messages on DATA
interface are not used, let's keep the protocol compatibility
and fill them by 0x00.
diff --git a/lib/trx_interface/trx_impl.cc b/lib/trx_interface/trx_impl.cc
index 9b9c484..abcd45e 100644
--- a/lib/trx_interface/trx_impl.cc
+++ b/lib/trx_interface/trx_impl.cc
@@ -135,19 +135,25 @@
// Convert to transceiver interface specific bits {255..0}
for (int i = 0; i < 148; i++)
buf[8 + i] = burst[i] ? 255 : 0;
+
+ // Fill two unused bytes
+ buf[156] = 0x00;
+ buf[157] = 0x00;
}
void
trx_impl::handle_dl_burst(pmt::pmt_t msg)
{
// 8 bytes of header + 148 bytes of burst
- uint8_t buf[156];
+ // + two unused, but required bytes
+ // otherwise bursts would be rejected
+ uint8_t buf[158];
// Compose a new UDP payload with burst
burst_pack(msg, buf);
// Send a burst
- d_data_sock->udp_send(buf, 156);
+ d_data_sock->udp_send(buf, 158);
}
} /* namespace grgsm */