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refactor: make rxdataF_comp 4D array

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put symbol index as first dimension. It is necessary because the offset for
the buffer to start of a symbol can be arbitrary and hence not aligned to 32
byte boundary. Having each symbol in a separate dimension ensures alignment.
This commit is contained in:
Sakthivel Velumani
2026-03-18 18:57:45 +00:00
parent cb8e129397
commit 7c36011669
5 changed files with 38 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
+5 -4
View File
@@ -1384,7 +1384,8 @@ void nr_pdsch_ptrs_processing(int nbRx,
c16_t ptrs_phase_per_slot[][14], c16_t ptrs_phase_per_slot[][14],
int32_t ptrs_re_per_slot[][14], int32_t ptrs_re_per_slot[][14],
uint32_t rx_size_symbol, uint32_t rx_size_symbol,
c16_t rxdataF_comp[][nbRx][rx_size_symbol * NR_SYMBOLS_PER_SLOT], int nl,
c16_t rxdataF_comp[][nl][nbRx][rx_size_symbol],
NR_DL_FRAME_PARMS *frame_parms, NR_DL_FRAME_PARMS *frame_parms,
NR_DL_UE_HARQ_t *dlsch0_harq, NR_DL_UE_HARQ_t *dlsch0_harq,
NR_DL_UE_HARQ_t *dlsch1_harq, NR_DL_UE_HARQ_t *dlsch1_harq,
@@ -1477,7 +1478,7 @@ void nr_pdsch_ptrs_processing(int nbRx,
*nb_rb, *nb_rb,
rnti, rnti,
frame_parms->ofdm_symbol_size, frame_parms->ofdm_symbol_size,
rxdataF_comp[0][aarx] + symbol * rx_size_symbol, rxdataF_comp[symbol][0][aarx],
gold, gold,
(int16_t *)&phase_per_symbol[symbol], (int16_t *)&phase_per_symbol[symbol],
&ptrs_re_symbol[symbol]); &ptrs_re_symbol[symbol]);
@@ -1510,9 +1511,9 @@ void nr_pdsch_ptrs_processing(int nbRx,
#ifdef DEBUG_DL_PTRS #ifdef DEBUG_DL_PTRS
printf("[PHY][DL][PTRS]: Rotate Symbol %2d with %d + j* %d\n", i, phase_per_symbol[i].r,phase_per_symbol[i].i); printf("[PHY][DL][PTRS]: Rotate Symbol %2d with %d + j* %d\n", i, phase_per_symbol[i].r,phase_per_symbol[i].i);
#endif #endif
rotate_cpx_vector(&rxdataF_comp[0][aarx][i * rx_size_symbol], rotate_cpx_vector(rxdataF_comp[i][0][aarx],
&phase_per_symbol[i], &phase_per_symbol[i],
&rxdataF_comp[0][aarx][i * rx_size_symbol], rxdataF_comp[i][0][aarx],
((*nb_rb) * NR_NB_SC_PER_RB), ((*nb_rb) * NR_NB_SC_PER_RB),
15); 15);
}// if not DMRS Symbol }// if not DMRS Symbol
openair1/PHY/NR_UE_ESTIMATION/nr_estimation.h
+2 -1
View File
@@ -141,7 +141,8 @@ void nr_pdsch_ptrs_processing(int nbRx,
c16_t ptrs_phase_per_slot[][14], c16_t ptrs_phase_per_slot[][14],
int32_t ptrs_re_per_slot[][14], int32_t ptrs_re_per_slot[][14],
uint32_t rx_size_symbol, uint32_t rx_size_symbol,
c16_t rxdataF_comp[][nbRx][rx_size_symbol * NR_SYMBOLS_PER_SLOT], int nl,
c16_t rxdataF_comp[][nl][nbRx][rx_size_symbol],
NR_DL_FRAME_PARMS *frame_parms, NR_DL_FRAME_PARMS *frame_parms,
NR_DL_UE_HARQ_t *dlsch0_harq, NR_DL_UE_HARQ_t *dlsch0_harq,
NR_DL_UE_HARQ_t *dlsch1_harq, NR_DL_UE_HARQ_t *dlsch1_harq,
openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_demodulation.c
+27 -26
View File
@@ -133,15 +133,15 @@ static uint32_t build_csi_overlap_bitmap(fapi_nr_dl_config_dlsch_pdu_rel15_t *dl
static void nr_dlsch_channel_compensation(uint32_t rx_size_symbol, static void nr_dlsch_channel_compensation(uint32_t rx_size_symbol,
int nbRx, int nbRx,
uint8_t n_layers,
c16_t rxdataF_ext[][rx_size_symbol], c16_t rxdataF_ext[][rx_size_symbol],
int32_t dl_ch_estimates_ext[][rx_size_symbol], int32_t dl_ch_estimates_ext[][rx_size_symbol],
c16_t dl_ch_mag[][nbRx][rx_size_symbol], c16_t dl_ch_mag[][nbRx][rx_size_symbol],
c16_t dl_ch_magb[][nbRx][rx_size_symbol], c16_t dl_ch_magb[][nbRx][rx_size_symbol],
c16_t dl_ch_magr[][nbRx][rx_size_symbol], c16_t dl_ch_magr[][nbRx][rx_size_symbol],
c16_t rxdataF_comp[][nbRx][rx_size_symbol * NR_SYMBOLS_PER_SLOT], c16_t rxdataF_comp[][n_layers][nbRx][rx_size_symbol],
int ***rho, int ***rho,
NR_DL_FRAME_PARMS *frame_parms, NR_DL_FRAME_PARMS *frame_parms,
uint8_t n_layers,
unsigned char symbol, unsigned char symbol,
int length, int length,
unsigned char mod_order, unsigned char mod_order,
@@ -175,7 +175,7 @@ static void nr_dlsch_channel_compensation(uint32_t rx_size_symbol,
dl_ch_mag128b = (simde__m128i *)dl_ch_magb[l][aarx]; dl_ch_mag128b = (simde__m128i *)dl_ch_magb[l][aarx];
dl_ch_mag128r = (simde__m128i *)dl_ch_magr[l][aarx]; dl_ch_mag128r = (simde__m128i *)dl_ch_magr[l][aarx];
rxdataF128 = (simde__m128i *)rxdataF_ext[aarx]; rxdataF128 = (simde__m128i *)rxdataF_ext[aarx];
rxdataF_comp128 = (simde__m128i *)(rxdataF_comp[l][aarx] + symbol * rx_size_symbol); rxdataF_comp128 = (simde__m128i *)(rxdataF_comp[symbol][l][aarx]);
for (int rb = 0; rb < nb_rb_0; rb++) { for (int rb = 0; rb < nb_rb_0; rb++) {
if (mod_order > 2) { if (mod_order > 2) {
@@ -390,7 +390,7 @@ static void nr_dlsch_extract_rbs(uint32_t rxdataF_sz,
static void nr_dlsch_detection_mrc(uint32_t rx_size_symbol, static void nr_dlsch_detection_mrc(uint32_t rx_size_symbol,
short nl, short nl,
short n_rx, short n_rx,
c16_t rxdataF_comp[][n_rx][rx_size_symbol * NR_SYMBOLS_PER_SLOT], c16_t rxdataF_comp[][nl][n_rx][rx_size_symbol],
int ***rho, int ***rho,
c16_t dl_ch_mag[][n_rx][rx_size_symbol], c16_t dl_ch_mag[][n_rx][rx_size_symbol],
c16_t dl_ch_magb[][n_rx][rx_size_symbol], c16_t dl_ch_magb[][n_rx][rx_size_symbol],
@@ -403,12 +403,12 @@ static void nr_dlsch_detection_mrc(uint32_t rx_size_symbol,
if (n_rx > 1) { if (n_rx > 1) {
for (int l = 0; l < nl; l++) { for (int l = 0; l < nl; l++) {
rxdataF_comp128_0 = (simde__m128i *)(rxdataF_comp[l][0] + symbol * rx_size_symbol); rxdataF_comp128_0 = (simde__m128i *)(rxdataF_comp[symbol][l][0]);
dl_ch_mag128_0 = (simde__m128i *)dl_ch_mag[l][0]; dl_ch_mag128_0 = (simde__m128i *)dl_ch_mag[l][0];
dl_ch_mag128_0b = (simde__m128i *)dl_ch_magb[l][0]; dl_ch_mag128_0b = (simde__m128i *)dl_ch_magb[l][0];
dl_ch_mag128_0r = (simde__m128i *)dl_ch_magr[l][0]; dl_ch_mag128_0r = (simde__m128i *)dl_ch_magr[l][0];
for (int aarx = 1; aarx < n_rx; aarx++) { for (int aarx = 1; aarx < n_rx; aarx++) {
rxdataF_comp128_1 = (simde__m128i *)(rxdataF_comp[l][aarx] + symbol * rx_size_symbol); rxdataF_comp128_1 = (simde__m128i *)(rxdataF_comp[symbol][l][aarx]);
dl_ch_mag128_1 = (simde__m128i *)dl_ch_mag[l][aarx]; dl_ch_mag128_1 = (simde__m128i *)dl_ch_mag[l][aarx];
dl_ch_mag128_1b = (simde__m128i *)dl_ch_magb[l][aarx]; dl_ch_mag128_1b = (simde__m128i *)dl_ch_magb[l][aarx];
dl_ch_mag128_1r = (simde__m128i *)dl_ch_magr[l][aarx]; dl_ch_mag128_1r = (simde__m128i *)dl_ch_magr[l][aarx];
@@ -719,7 +719,7 @@ void nr_conjch0_mult_ch1(c16_t *ch0, c16_t *ch1, c16_t *ch0conj_ch1, unsigned sh
static void nr_dlsch_mmse(uint32_t rx_size_symbol, static void nr_dlsch_mmse(uint32_t rx_size_symbol,
unsigned char n_rx, unsigned char n_rx,
unsigned char nl, // number of layer unsigned char nl, // number of layer
c16_t rxdataF_comp[][n_rx][rx_size_symbol * NR_SYMBOLS_PER_SLOT], c16_t rxdataF_comp[][nl][n_rx][rx_size_symbol],
c16_t dl_ch_mag[][n_rx][rx_size_symbol], c16_t dl_ch_mag[][n_rx][rx_size_symbol],
c16_t dl_ch_magb[][n_rx][rx_size_symbol], c16_t dl_ch_magb[][n_rx][rx_size_symbol],
c16_t dl_ch_magr[][n_rx][rx_size_symbol], c16_t dl_ch_magr[][n_rx][rx_size_symbol],
@@ -802,7 +802,7 @@ static void nr_dlsch_mmse(uint32_t rx_size_symbol,
// print_shorts(" H_h_H=",(int16_t*)&conjH_H_elements[ctx*nl+rtx][0][0]); // print_shorts(" H_h_H=",(int16_t*)&conjH_H_elements[ctx*nl+rtx][0][0]);
// print_shorts(" Inv_H_h_H=",(int16_t*)&inv_H_h_H[ctx*nl+rtx][0]); // print_shorts(" Inv_H_h_H=",(int16_t*)&inv_H_h_H[ctx*nl+rtx][0]);
mult_complex_vectors(inv_H_h_H[ctx][rtx], mult_complex_vectors(inv_H_h_H[ctx][rtx],
rxdataF_comp[ctx][0] + symbol * rx_size_symbol, rxdataF_comp[symbol][ctx][0],
outtemp, outtemp,
sizeofArray(outtemp), sizeofArray(outtemp),
shift - (fp_flag == 1 ? 1 : 0)); shift - (fp_flag == 1 ? 1 : 0));
@@ -818,7 +818,7 @@ static void nr_dlsch_mmse(uint32_t rx_size_symbol,
//Copy zero_forcing out to output array //Copy zero_forcing out to output array
for (int rtx = 0; rtx < nl; rtx++) for (int rtx = 0; rtx < nl; rtx++)
nr_element_sign(rxdataF_zforcing[rtx], rxdataF_comp[rtx][0] + symbol * rx_size_symbol, nb_rb_0, +1); nr_element_sign(rxdataF_zforcing[rtx], rxdataF_comp[symbol][rtx][0], nb_rb_0, +1);
//Update LLR thresholds with the Matrix determinant //Update LLR thresholds with the Matrix determinant
simde__m128i *dl_ch_mag128_0=NULL,*dl_ch_mag128b_0=NULL,*dl_ch_mag128r_0=NULL,*determ_fin_128; simde__m128i *dl_ch_mag128_0=NULL,*dl_ch_mag128b_0=NULL,*dl_ch_mag128r_0=NULL,*determ_fin_128;
@@ -910,8 +910,9 @@ static void nr_dlsch_layer_demapping(int16_t *llr_cw[2],
static void nr_dlsch_llr(uint32_t rx_size_symbol, static void nr_dlsch_llr(uint32_t rx_size_symbol,
int nbRx, int nbRx,
uint sz, uint sz,
int nl,
int16_t layer_llr[][sz], int16_t layer_llr[][sz],
c16_t rxdataF_comp[][nbRx][rx_size_symbol * NR_SYMBOLS_PER_SLOT], c16_t rxdataF_comp[][nl][nbRx][rx_size_symbol],
c16_t dl_ch_mag[rx_size_symbol], c16_t dl_ch_mag[rx_size_symbol],
c16_t dl_ch_magb[rx_size_symbol], c16_t dl_ch_magb[rx_size_symbol],
c16_t dl_ch_magr[rx_size_symbol], c16_t dl_ch_magr[rx_size_symbol],
@@ -924,22 +925,22 @@ static void nr_dlsch_llr(uint32_t rx_size_symbol,
switch (dlsch[0].dlsch_config.qamModOrder) { switch (dlsch[0].dlsch_config.qamModOrder) {
case 2 : case 2 :
for(int l = 0; l < dlsch[0].Nl; l++) for(int l = 0; l < dlsch[0].Nl; l++)
nr_qpsk_llr(&rxdataF_comp[l][0][symbol * rx_size_symbol], layer_llr[l] + llr_offset_symbol, len); nr_qpsk_llr(&rxdataF_comp[symbol][l][0][0], layer_llr[l] + llr_offset_symbol, len);
break; break;
case 4 : case 4 :
for(int l = 0; l < dlsch[0].Nl; l++) for(int l = 0; l < dlsch[0].Nl; l++)
nr_16qam_llr(&rxdataF_comp[l][0][symbol * rx_size_symbol], dl_ch_mag, layer_llr[l] + llr_offset_symbol, len); nr_16qam_llr(&rxdataF_comp[symbol][l][0][0], dl_ch_mag, layer_llr[l] + llr_offset_symbol, len);
break; break;
case 6 : case 6 :
for(int l=0; l < dlsch[0].Nl; l++) for(int l=0; l < dlsch[0].Nl; l++)
nr_64qam_llr(&rxdataF_comp[l][0][symbol * rx_size_symbol], dl_ch_mag, dl_ch_magb, layer_llr[l] + llr_offset_symbol, len); nr_64qam_llr(&rxdataF_comp[symbol][l][0][0], dl_ch_mag, dl_ch_magb, layer_llr[l] + llr_offset_symbol, len);
break; break;
case 8: case 8:
for(int l=0; l < dlsch[0].Nl; l++) for(int l=0; l < dlsch[0].Nl; l++)
nr_256qam_llr(&rxdataF_comp[l][0][symbol * rx_size_symbol], dl_ch_mag, dl_ch_magb, dl_ch_magr, layer_llr[l] + llr_offset_symbol, len); nr_256qam_llr(&rxdataF_comp[symbol][l][0][0], dl_ch_mag, dl_ch_magb, dl_ch_magr, layer_llr[l] + llr_offset_symbol, len);
break; break;
default: default:
@@ -951,19 +952,19 @@ static void nr_dlsch_llr(uint32_t rx_size_symbol,
if (dlsch1_harq) { if (dlsch1_harq) {
switch (dlsch[1].dlsch_config.qamModOrder) { switch (dlsch[1].dlsch_config.qamModOrder) {
case 2 : case 2 :
nr_qpsk_llr(&rxdataF_comp[0][0][symbol * rx_size_symbol], layer_llr[0] + llr_offset_symbol, len); nr_qpsk_llr(&rxdataF_comp[symbol][0][0][0], layer_llr[0] + llr_offset_symbol, len);
break; break;
case 4: case 4:
nr_16qam_llr(&rxdataF_comp[0][0][symbol * rx_size_symbol], dl_ch_mag, layer_llr[0] + llr_offset_symbol, len); nr_16qam_llr(&rxdataF_comp[symbol][0][0][0], dl_ch_mag, layer_llr[0] + llr_offset_symbol, len);
break; break;
case 6 : case 6 :
nr_64qam_llr(&rxdataF_comp[0][0][symbol * rx_size_symbol], dl_ch_mag, dl_ch_magb, layer_llr[0] + llr_offset_symbol, len); nr_64qam_llr(&rxdataF_comp[symbol][0][0][0], dl_ch_mag, dl_ch_magb, layer_llr[0] + llr_offset_symbol, len);
break; break;
case 8 : case 8 :
nr_256qam_llr(&rxdataF_comp[0][0][symbol * rx_size_symbol], dl_ch_mag, dl_ch_magb, dl_ch_magr, layer_llr[0] + llr_offset_symbol, len); nr_256qam_llr(&rxdataF_comp[symbol][0][0][0], dl_ch_mag, dl_ch_magb, dl_ch_magr, layer_llr[0] + llr_offset_symbol, len);
break; break;
default: default:
@@ -993,7 +994,7 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
int32_t *log2_maxh, int32_t *log2_maxh,
int rx_size_symbol, int rx_size_symbol,
int nbRx, int nbRx,
c16_t rxdataF_comp[][nbRx][rx_size_symbol * NR_SYMBOLS_PER_SLOT], c16_t rxdataF_comp[][dlsch->Nl][nbRx][rx_size_symbol],
c16_t ptrs_phase_per_slot[][NR_SYMBOLS_PER_SLOT], c16_t ptrs_phase_per_slot[][NR_SYMBOLS_PER_SLOT],
int32_t ptrs_re_per_slot[][NR_SYMBOLS_PER_SLOT], int32_t ptrs_re_per_slot[][NR_SYMBOLS_PER_SLOT],
int G, int G,
@@ -1264,6 +1265,7 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
start_meas_nr_ue_phy(ue, DLSCH_CHANNEL_COMPENSATION_STATS); start_meas_nr_ue_phy(ue, DLSCH_CHANNEL_COMPENSATION_STATS);
nr_dlsch_channel_compensation(rx_size_symbol, nr_dlsch_channel_compensation(rx_size_symbol,
nbRx, nbRx,
nl,
rxdataF_ext, rxdataF_ext,
dl_ch_estimates_ext, dl_ch_estimates_ext,
dl_ch_mag, dl_ch_mag,
@@ -1272,7 +1274,6 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
rxdataF_comp, rxdataF_comp,
NULL, NULL,
fp, fp,
nl,
symbol, symbol,
nb_re_pdsch, nb_re_pdsch,
dlsch_config->qamModOrder, dlsch_config->qamModOrder,
@@ -1371,6 +1372,7 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
ptrs_phase_per_slot, ptrs_phase_per_slot,
ptrs_re_per_slot, ptrs_re_per_slot,
rx_size_symbol, rx_size_symbol,
nl,
rxdataF_comp, rxdataF_comp,
fp, fp,
dlsch0_harq, dlsch0_harq,
@@ -1385,6 +1387,7 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
nr_dlsch_llr(rx_size_symbol, nr_dlsch_llr(rx_size_symbol,
nbRx, nbRx,
layer_llr_size, layer_llr_size,
nl,
layer_llr, layer_llr,
rxdataF_comp, rxdataF_comp,
dl_ch_mag[0][0], dl_ch_mag[0][0],
@@ -1419,13 +1422,13 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
size_t offset = 0; size_t offset = 0;
for (int i = startSymbIdx; i < startSymbIdx + nbSymb; i++) { for (int i = startSymbIdx; i < startSymbIdx + nbSymb; i++) {
size_t data_size = sizeof(c16_t) * dl_valid_re[i]; size_t data_size = sizeof(c16_t) * dl_valid_re[i];
UEscopeCopyUnsafe(ue, pdschRxdataF_comp, &rxdataF_comp[0][0][rx_size_symbol * i], data_size, offset, i); UEscopeCopyUnsafe(ue, pdschRxdataF_comp, &rxdataF_comp[i][0][0][0], data_size, offset, i);
offset += data_size; offset += data_size;
} }
UEunlockScopeData(ue, pdschRxdataF_comp) UEunlockScopeData(ue, pdschRxdataF_comp)
} }
} else { } else {
UEscopeCopy(ue, pdschRxdataF_comp, rxdataF_comp[0], sizeof(c16_t), nbRx, rx_size_symbol * fp->symbols_per_slot, 0); UEscopeCopy(ue, pdschRxdataF_comp, rxdataF_comp[0], sizeof(c16_t), nbRx, rx_size_symbol, 0);
} }
} }
@@ -1453,10 +1456,8 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
if (ue->phy_sim_pdsch_rxdataF_comp) if (ue->phy_sim_pdsch_rxdataF_comp)
for (int a = 0; a < nbRx; a++) { for (int a = 0; a < nbRx; a++) {
for (int l = 0; l < nl; l++) { for (int l = 0; l < nl; l++) {
int offset = (void *)rxdataF_comp[l][a] - (void *)rxdataF_comp[0] + symbol * rx_size_symbol * sizeof(c16_t); int offset = (void *)rxdataF_comp[symbol][l][a] - (void *)rxdataF_comp[0];
memcpy(ue->phy_sim_pdsch_rxdataF_comp + offset, memcpy(ue->phy_sim_pdsch_rxdataF_comp + offset, rxdataF_comp[symbol][l][a], sizeof(c16_t) * rx_size_symbol);
rxdataF_comp[l][a] + symbol * rx_size_symbol,
sizeof(c16_t) * rx_size_symbol);
} }
memcpy((c16_t *)ue->phy_sim_pdsch_dl_ch_estimates + pdsch_est_size * a, dl_ch_estimates, pdsch_est_size * sizeof(c16_t)); memcpy((c16_t *)ue->phy_sim_pdsch_dl_ch_estimates + pdsch_est_size * a, dl_ch_estimates, pdsch_est_size * sizeof(c16_t));
} }
openair1/PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h
+1 -1
View File
@@ -318,7 +318,7 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
int32_t *log2_maxh, int32_t *log2_maxh,
int rx_size_symbol, int rx_size_symbol,
int nbRx, int nbRx,
c16_t rxdataF_comp[][nbRx][rx_size_symbol * NR_SYMBOLS_PER_SLOT], c16_t rxdataF_comp[][dlsch->Nl][nbRx][rx_size_symbol],
c16_t ptrs_phase_per_slot[][NR_SYMBOLS_PER_SLOT], c16_t ptrs_phase_per_slot[][NR_SYMBOLS_PER_SLOT],
int32_t ptrs_re_per_slot[][NR_SYMBOLS_PER_SLOT], int32_t ptrs_re_per_slot[][NR_SYMBOLS_PER_SLOT],
int G, int G,
openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
+3 -2
View File
@@ -617,12 +617,13 @@ static int nr_ue_pdsch_procedures(PHY_VARS_NR_UE *ue,
const uint32_t rx_size_symbol = (freq_alloc.num_rbs * NR_NB_SC_PER_RB + 15) & ~15; const uint32_t rx_size_symbol = (freq_alloc.num_rbs * NR_NB_SC_PER_RB + 15) & ~15;
fourDimArray_t *toFree2 = NULL; fourDimArray_t *toFree2 = NULL;
allocCast3D(rxdataF_comp, allocCast4D(rxdataF_comp,
c16_t, c16_t,
toFree2, toFree2,
ue->frame_parms.symbols_per_slot,
dlsch[0].Nl, dlsch[0].Nl,
ue->frame_parms.nb_antennas_rx, ue->frame_parms.nb_antennas_rx,
rx_size_symbol * ue->frame_parms.symbols_per_slot, rx_size_symbol,
false); false);
uint32_t nvar = 0; uint32_t nvar = 0;