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Configurable PRB set from STDIN in pdsch_enodeb

This commit is contained in:
ismagom 2014-12-30 11:36:36 -05:00
parent 147c0f5f98
commit ae9af79172
1 changed files with 52 additions and 30 deletions
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82
lte/examples/pdsch_enodeb.c
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@ -42,10 +42,10 @@ void *uhd;
char *output_file_name = NULL;
#define LEFT_KEY 0x25
#define RIGHT_KEY 0x27
#define UP_KEY 0x26
#define DOWN_KEY 0x28
#define LEFT_KEY 68
#define RIGHT_KEY 67
#define UP_KEY 65
#define DOWN_KEY 66
lte_cell_t cell = {
6, // nof_prb
@ -59,7 +59,7 @@ lte_cell_t cell = {
int udp_port = -1; // -1 generates random data
uint32_t cfi=1;
uint32_t mcs_idx = 12;
uint32_t mcs_idx = 12, last_mcs_idx = 12;
int nof_frames = -1;
char *uhd_args = "";
@ -265,19 +265,28 @@ void base_free() {
}
}
int prbset_num = 1;
int prbset_num = 1, last_prbset_num = 1;
int prbset_orig = 0;
unsigned int
reverse(register unsigned int x)
{
x = (((x & 0xaaaaaaaa) >> 1) | ((x & 0x55555555) << 1));
x = (((x & 0xcccccccc) >> 2) | ((x & 0x33333333) << 2));
x = (((x & 0xf0f0f0f0) >> 4) | ((x & 0x0f0f0f0f) << 4));
x = (((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8));
return((x >> 16) | (x << 16));
}
uint32_t prbset_to_bitmask() {
uint32_t mask=0;
int k = 0;
for (int i=-cell.nof_prb/2;i<cell.nof_prb/2;i++) {
if (i >= prbset_orig - prbset_num/2 && i < prbset_orig + prbset_num/2) {
mask = mask | (0x1<<k);
for (int i=0;i<cell.nof_prb;i++) {
if (i >= prbset_orig && i < prbset_orig + prbset_num) {
mask = mask | (0x1<<i);
}
k++;
}
return mask;
return reverse(mask)>>(32-cell.nof_prb);
}
int update_radl(ra_pdsch_t *ra_dl) {
@ -321,24 +330,37 @@ int update_control(ra_pdsch_t *ra_dl) {
if (n == 1) {
// stdin ready
if (fgets(input, sizeof(input), stdin)) {
switch(input[0]) {
case LEFT_KEY:
prbset_orig++;
break;
case RIGHT_KEY:
prbset_orig--;
break;
case UP_KEY:
prbset_num++;
break;
case DOWN_KEY:
if (prbset_num > 0)
prbset_num--;
break;
default:
mcs_idx = atoi(input);
if(input[0] == 27) {
switch(input[2]) {
case RIGHT_KEY:
if (prbset_orig + prbset_num < cell.nof_prb)
prbset_orig++;
break;
case LEFT_KEY:
if (prbset_orig > 0)
prbset_orig--;
break;
case UP_KEY:
if (prbset_num < cell.nof_prb)
prbset_num++;
break;
case DOWN_KEY:
last_prbset_num = prbset_num;
if (prbset_num > 0)
prbset_num--;
break;
}
} else {
last_mcs_idx = mcs_idx;
mcs_idx = atoi(input);
}
bzero(input,sizeof(input));
if (update_radl(ra_dl)) {
printf("Trying with last known MCS index\n");
mcs_idx = last_mcs_idx;
prbset_num = last_prbset_num;
return update_radl(ra_dl);
}
return update_radl(ra_dl);
}
return 0;
} else if (n < 0) {
@ -451,7 +473,7 @@ int main(int argc, char **argv) {
}
/* Transmit PDCCH + PDSCH only when there is data to send */
if (sf_idx != 0) {
if (sf_idx != 0 && sf_idx != 5) {
if (udp_port > 0) {
int n = udpsource_read(&udp_source, data_unpacked, 1+(ra_dl.mcs.tbs-1)/8);
if (n > 0) {