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PBCH debug changes

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This commit is contained in:
Raymond Knopp
2018-09-20 16:56:27 +02:00
parent 3996241b17
commit 90ccc5034e
2 changed files with 11 additions and 17 deletions
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openair1/PHY/NR_TRANSPORT/nr_pbch.c
+10 -16
View File
@@ -141,17 +141,13 @@ void nr_pbch_scrambling(NR_gNB_PBCH *pbch,
uint8_t reset, offset; uint8_t reset, offset;
uint32_t x1, x2, s=0; uint32_t x1, x2, s=0;
uint32_t *pbch_e = pbch->pbch_e; uint32_t *pbch_e = pbch->pbch_e;
uint32_t pbch_a_prime = pbch->pbch_a_prime;
uint32_t pbch_a_interleaved = pbch->pbch_a_interleaved;
uint32_t unscrambling_mask = 0x100006D; uint32_t unscrambling_mask = 0x100006D;
reset = 1; reset = 1;
// x1 is set in lte_gold_generic // x1 is set in lte_gold_generic
x2 = Nid; x2 = Nid;
// The Gold sequence is shifted by nushift* M, so we skip (nushift*M /32) double words // The Gold sequence is shifted by nushift* M, so we skip (nushift*M /32) double words
for (int i=0; i<(uint16_t)ceil((nushift*M)/32); i++) { for (int i=0; i<(uint16_t)ceil(((float)nushift*M)/32); i++) {
s = lte_gold_generic(&x1, &x2, reset); s = lte_gold_generic(&x1, &x2, reset);
reset = 0; reset = 0;
} }
// Scrambling is now done with offset (nushift*M)%32 // Scrambling is now done with offset (nushift*M)%32
@@ -168,9 +164,8 @@ void nr_pbch_scrambling(NR_gNB_PBCH *pbch,
#ifdef DEBUG_PBCH_ENCODING #ifdef DEBUG_PBCH_ENCODING
printf("s: %04x\t", s); printf("s: %04x\t", s);
#endif #endif
if (!encoded) { if (!encoded)
pbch_a_prime ^= ((unscrambling_mask>>i)&1)? ((pbch_a_interleaved>>i)&1)<<i : (((pbch_a_interleaved>>i)&1) ^ ((s>>((i+offset)&0x1f))&1))<<i; pbch->pbch_a_prime ^= ((unscrambling_mask>>i)&1)? ((pbch->pbch_a_interleaved>>i)&1)<<i : (((pbch->pbch_a_interleaved>>i)&1) ^ ((s>>((i+offset)&0x1f))&1))<<i;
}
else else
pbch_e[i>>5] ^= (((s>>((i+offset)&0x1f))&1)<<(i&0x1f)); pbch_e[i>>5] ^= (((s>>((i+offset)&0x1f))&1)<<(i&0x1f));
@@ -224,6 +219,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
LOG_I(PHY, "PBCH generation started\n"); LOG_I(PHY, "PBCH generation started\n");
memset((void*)pbch, 0, sizeof(NR_gNB_PBCH));
///Payload generation ///Payload generation
// Fix byte endian // Fix byte endian
if (!(sfn&7)) if (!(sfn&7))
@@ -260,25 +256,23 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
for (int i=0; i<32; i++) { for (int i=0; i<32; i++) {
pbch->pbch_a_interleaved |= ((in>>i)&1)<<(nr_pbch_payload_interleaver(i));//nr_pbch_payload_interleaving_pattern[i] pbch->pbch_a_interleaved |= ((in>>i)&1)<<(nr_pbch_payload_interleaver(i));//nr_pbch_payload_interleaving_pattern[i]
#ifdef DEBUG_PBCH_ENCODING #ifdef DEBUG_PBCH_ENCODING
printf("i %d in 0x%08x out 0x%08x ilv %d (in>>i)&1) %d\n", i, in, out, nr_pbch_payload_interleaver(i), (in>>i)&1); printf("i %d in 0x%08x out 0x%08x ilv %d (in>>i)&1) %d\n", i, in, pbch->pbch_a_interleaved, nr_pbch_payload_interleaver(i), (in>>i)&1);
#endif #endif
} }
/*for (int i=0; i<NR_POLAR_PBCH_PAYLOAD_BITS>>3; i++)
pbch->pbch_a_interleaved[i] = (uint8_t)((out>>(i<<3))&0xff);*/
#ifdef DEBUG_PBCH_ENCODING #ifdef DEBUG_PBCH_ENCODING
printf("Interleaving:\n"); printf("Interleaving:\n");
printf("pbch_a_interleaved: 0x%08x\n", pbch->pbch_a_interleaved); printf("pbch_a_interleaved: 0x%08x\n", pbch->pbch_a_interleaved);
#endif #endif
// Scrambling // Scrambling
M = (Lmax == 64)? (NR_POLAR_PBCH_PAYLOAD_BITS - 6) : (NR_POLAR_PBCH_PAYLOAD_BITS - 3); M = (Lmax == 64)? (NR_POLAR_PBCH_PAYLOAD_BITS - 6) : (NR_POLAR_PBCH_PAYLOAD_BITS - 3);
nushift = (((sfn>>2)&1)<<1) ^ ((sfn>>1)&1); nushift = (((sfn>>2)&1)<<1) ^ ((sfn>>1)&1);
pbch->pbch_a_prime = 0;
nr_pbch_scrambling(pbch, (uint32_t)config->sch_config.physical_cell_id.value, nushift, M, NR_POLAR_PBCH_PAYLOAD_BITS, 0); nr_pbch_scrambling(pbch, (uint32_t)config->sch_config.physical_cell_id.value, nushift, M, NR_POLAR_PBCH_PAYLOAD_BITS, 0);
#ifdef DEBUG_PBCH_ENCODING #ifdef DEBUG_PBCH_ENCODING
printf("Payload scrambling:\n"); printf("Payload scrambling: nushift %d M %d sfn3 %d sfn2 %d\n", nushift, M, (sfn>>2)&1, (sfn>>1)&1);
printf("pbch_a_prime: 0x%08x\n", pbch->pbch_a_prime); printf("pbch_a_prime: 0x%08x\n", pbch->pbch_a_prime);
#endif #endif
/// CRC, coding and rate matching /// CRC, coding and rate matching
targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
+1 -1
View File
@@ -977,7 +977,7 @@ extern "C" {
if(device_adds.size() == 0) { if(device_adds.size() == 0) {
double usrp_master_clock = 184.32e6; double usrp_master_clock = 184.32e6;
std::string args = "type=x300"; std::string args = "type=x300, addr=192.168.30.2";
// workaround for an api problem, master clock has to be set with the constructor not via set_master_clock_rate // workaround for an api problem, master clock has to be set with the constructor not via set_master_clock_rate
args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock); args += boost::str(boost::format(",master_clock_rate=%f") % usrp_master_clock);