diff options
Diffstat (limited to 'host/apps')
| -rw-r--r-- | host/apps/omap_debug/usrp-e-loopback.c | 76 |
1 files changed, 33 insertions, 43 deletions
diff --git a/host/apps/omap_debug/usrp-e-loopback.c b/host/apps/omap_debug/usrp-e-loopback.c index c463e774d..d11cf7d09 100644 --- a/host/apps/omap_debug/usrp-e-loopback.c +++ b/host/apps/omap_debug/usrp-e-loopback.c @@ -5,6 +5,7 @@ #include <stdlib.h> #include <unistd.h> #include <stddef.h> +#include <sys/mman.h> #include "usrp_e.h" // max length #define PKT_DATA_LENGTH 1016 @@ -12,9 +13,9 @@ static int packet_data_length; static int error; struct pkt { + int len; int checksum; int seq_num; - int len; short data[]; }; @@ -38,8 +39,8 @@ static int calc_checksum(struct pkt *p) static void *read_thread(void *threadid) { + char *rx_data; int cnt, prev_seq_num, pkt_count, seq_num_failure; - struct usrp_transfer_frame *rx_data; struct pkt *p; unsigned long bytes_transfered, elapsed_seconds; struct timeval start_time, finish_time; @@ -51,32 +52,25 @@ static void *read_thread(void *threadid) // IMPORTANT: must assume max length packet from fpga rx_data = malloc(2048); - p = (struct pkt *) ((void *)rx_data + offsetof(struct usrp_transfer_frame, buf)); - //p = &(rx_data->buf[0]); - printf("Address of rx_data = %p, p = %p\n", rx_data, p); - printf("offsetof = %d\n", offsetof(struct usrp_transfer_frame, buf)); - printf("sizeof rx data = %d\n", sizeof(struct usrp_transfer_frame) + sizeof(struct pkt)); + p = (struct pkt *) ((void *)rx_data); prev_seq_num = 0; pkt_count = 0; seq_num_failure = 0; while (1) { + cnt = read(fp, rx_data, 2048); if (cnt < 0) printf("Error returned from read: %d, sequence number = %d\n", cnt, p->seq_num); -// printf("Packet received, status = %X, len = %d\n", rx_data->status, rx_data->len); -// printf("p->seq_num = %d, p->len = %d\n", p->seq_num, p->len); - +// printf("p->seq_num = %d\n", p->seq_num); - if (rx_data->len != (p->len*2 + 12)) - printf("rx_data->len = %d, p->len*2 + 12 = %d\n", rx_data->len, p->len*2 + 12); pkt_count++; if (p->seq_num != prev_seq_num + 1) { - printf("Sequence number fail, current = %X, previous = %X, pkt_count = %d\n", + printf("Sequence number fail, current = %d, previous = %d, pkt_count = %d\n", p->seq_num, prev_seq_num, pkt_count); seq_num_failure ++; @@ -87,12 +81,12 @@ static void *read_thread(void *threadid) prev_seq_num = p->seq_num; if (calc_checksum(p) != p->checksum) { - printf("Cksum fail rx = %X, tx = %X, dif = %d, count = %d, len = %d, rx->len = %d\n", - calc_checksum(p), p->checksum, p->checksum - calc_checksum(p), pkt_count, p->len, rx_data->len); + printf("Checksum fail packet = %X, expected = %X, pkt_count = %d\n", + calc_checksum(p), p->checksum, pkt_count); error = 1; } - bytes_transfered += rx_data->len; + bytes_transfered += cnt; if (bytes_transfered > (100 * 1000000)) { gettimeofday(&finish_time, NULL); @@ -116,47 +110,32 @@ static void *read_thread(void *threadid) static void *write_thread(void *threadid) { - int seq_number, i, cnt, data_length; - struct usrp_transfer_frame *tx_data; + int seq_number, i, cnt; + void *tx_data; struct pkt *p; printf("Greetings from the write thread!\n"); tx_data = malloc(2048); - p = (struct pkt *) ((void *)tx_data + offsetof(struct usrp_transfer_frame, buf)); - printf("Address of tx_data = %p, p = %p\n", tx_data, p); + p = (struct pkt *) ((void *)tx_data); - printf("sizeof rp_transfer_frame = %d, sizeof pkt = %d\n", sizeof(struct usrp_transfer_frame), sizeof(struct pkt)); - - for (i=0; i < 2048; i++) + for (i=0; i < packet_data_length; i++) // p->data[i] = random() >> 16; p->data[i] = i; - tx_data->status = 0xdeadbeef; - - printf("tx_data->len = %d\n", tx_data->len); - seq_number = 1; while (1) { -// printf("tx status = %X, len = %d\n", tx_data->status, tx_data->len); - if (packet_data_length > 0) - data_length = packet_data_length; - else - data_length = (random() & 0x1ff) + (1004 - 512); - -// printf("data_length = %d\n", data_length); - p->seq_num = seq_number++; - p->len = data_length; - p->checksum = calc_checksum(p); - tx_data->len = 12 + p->len * 2; -// printf("tx status = %X, len = %d, p->len = %d\n", tx_data->status, tx_data->len, p->len); + if (packet_data_length > 0) + p->len = packet_data_length; + else + p->len = (random() & 0x1ff) + (1004 - 512); - cnt = write(fp, tx_data, sizeof(struct usrp_transfer_frame) + sizeof(struct pkt) + 2 * p->len); -// cnt = write(fp, tx_data, 2048); + p->checksum = calc_checksum(p); + cnt = write(fp, tx_data, p->len * 2 + 12); if (cnt < 0) printf("Error returned from write: %d\n", cnt); // sleep(1); @@ -171,6 +150,8 @@ int main(int argc, char *argv[]) struct sched_param s = { .sched_priority = 1 }; + void *rb; + struct usrp_transfer_frame *tx_rb, *rx_rb; if (argc < 2) { printf("%s data_size\n", argv[0]); @@ -182,23 +163,32 @@ int main(int argc, char *argv[]) fp = open("/dev/usrp_e0", O_RDWR); printf("fp = %d\n", fp); + rb = mmap(0, 202 * 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fp, 0); + if (!rb) { + printf("mmap failed\n"); + exit; + } + + sched_setscheduler(0, SCHED_RR, &s); error = 0; +#if 1 if (pthread_create(&rx, NULL, read_thread, (void *) t)) { printf("Failed to create rx thread\n"); exit(-1); } sleep(1); +#endif if (pthread_create(&tx, NULL, write_thread, (void *) t)) { printf("Failed to create tx thread\n"); exit(-1); } - while (!error) - sleep(1); +// while (!error) + sleep(1000000000); printf("Done sleeping\n"); } |