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#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
#include <stddef.h>
#include "usrp_e.h"
// max length #define PKT_DATA_LENGTH 1016
int main(int argc, char *argv[])
{
struct usrp_transfer_frame *tx_data, *rx_data;
int i, fp, packet_data_length, cnt;
struct usrp_e_ctl16 d;
if (argc < 2) {
printf("%s data_size (in bytes < 2040)\n", argv[0]);
return -1;
}
packet_data_length = atoi(argv[1]);
fp = open("/dev/usrp_e0", O_RDWR);
d.offset = 14;
d.count = 1;
d.buf[0] = (1 << 13);
ioctl(fp, USRP_E_WRITE_CTL16, &d);
tx_data = malloc(2048);
rx_data = malloc(2048);
tx_data->flags = 0;
tx_data->len = sizeof(struct usrp_transfer_frame) + packet_data_length;
while (1) {
for (i = 0; i < packet_data_length; i++) {
tx_data->buf[i] = random() >> 24;
}
cnt = write(fp, tx_data, 2048);
cnt = read(fp, rx_data, 2048);
if (tx_data->len != rx_data->len)
printf("Bad frame length sent %d, read %d\n", tx_data->len, rx_data->len);
for (i = 0; i < packet_data_length; i++) {
if (tx_data->buf[i] != rx_data->buf[i])
printf("Bad data at %d, sent %d, received %d\n", i, tx_data->buf[i], rx_data->buf[i]);
}
printf("---------------------------------------------------\n");
sleep(1);
}
}
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