diff options
| -rw-r--r-- | host/apps/omap_debug/Makefile | 6 | ||||
| -rw-r--r-- | host/apps/omap_debug/usrp-e-fpga-rw.c | 167 |
2 files changed, 172 insertions, 1 deletions
diff --git a/host/apps/omap_debug/Makefile b/host/apps/omap_debug/Makefile index b00210c4f..f48eb9539 100644 --- a/host/apps/omap_debug/Makefile +++ b/host/apps/omap_debug/Makefile @@ -1,6 +1,6 @@ CFLAGS=-Wall -I../../lib/usrp/usrp_e/ -all : usrp-e-spi usrp-e-i2c usrp-e-rw usrp-e-uart usrp-e-led usrp-e-ctl usrp-e-button usrp-e-uart-rx fpga-downloader usrp-e-gpio usrp-e-debug-pins usrp-e-rw-random +all : usrp-e-spi usrp-e-i2c usrp-e-rw usrp-e-uart usrp-e-led usrp-e-ctl usrp-e-button usrp-e-uart-rx fpga-downloader usrp-e-gpio usrp-e-debug-pins usrp-e-rw-random usrp-e-fpga-rw usrp-e-spi : usrp-e-spi.c @@ -9,6 +9,9 @@ usrp-e-i2c : usrp-e-i2c.c usrp-e-rw : usrp-e-rw.c gcc -o $@ $< -lpthread +usrp-e-fpga-rw : usrp-e-fpga-rw.c + gcc -o $@ $< -lpthread + usrp-e-rw-random : usrp-e-rw-random.c gcc -o $@ $< -lpthread @@ -31,6 +34,7 @@ clean : rm -f usrp-e-spi rm -f usrp-e-i2c rm -f usrp-e-rw + rm -f usrp-e-fpga-rw rm -f usrp-e-rw-random rm -f usrp-e-uart rm -f usrp-e-uart-rx diff --git a/host/apps/omap_debug/usrp-e-fpga-rw.c b/host/apps/omap_debug/usrp-e-fpga-rw.c new file mode 100644 index 000000000..455657203 --- /dev/null +++ b/host/apps/omap_debug/usrp-e-fpga-rw.c @@ -0,0 +1,167 @@ +#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 +static int packet_data_length; + +struct pkt { + int checksum; + int seq_num; + short data[]; +}; + +static int fp; + +static int calc_checksum(struct pkt *p) +{ + int i, sum; + + i = 0; + sum = 0; + + for (i=0; i < packet_data_length; i++) + sum += p->data[i]; + + sum += p->seq_num; + + return sum; +} + +static void *read_thread(void *threadid) +{ + int cnt, prev_seq_num; + struct usrp_transfer_frame *rx_data; + struct pkt *p; + + printf("Greetings from the reading thread!\n"); + + // IMPORTANT: must assume max length packet from fpga + rx_data = malloc(sizeof(struct usrp_transfer_frame) + sizeof(struct pkt) + (1016 * 2)); + 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)); + + prev_seq_num = 0; + + while (1) { + + cnt = read(fp, rx_data, 2048); + if (cnt < 0) + printf("Error returned from read: %d\n", cnt); + +// printf("Packet received, flags = %X, len = %d\n", rx_data->flags, rx_data->len); +// printf("p->seq_num = %d\n", p->seq_num); + + if (p->seq_num != prev_seq_num + 1) + printf("Sequence number fail, current = %X, previous = %X\n", + p->seq_num, prev_seq_num); + prev_seq_num = p->seq_num; + + if (calc_checksum(p) != p->checksum) + printf("Checksum fail packet = %X, expected = %X\n", + calc_checksum(p), p->checksum); +// printf("\n"); + } + +} + +static void *write_thread(void *threadid) +{ + int seq_number, i, cnt; + struct usrp_transfer_frame *tx_data; + struct pkt *p; + + printf("Greetings from the write thread!\n"); + + tx_data = malloc(sizeof(struct usrp_transfer_frame) + sizeof(struct pkt) + (packet_data_length * 2)); + p = (struct pkt *) ((void *)tx_data + offsetof(struct usrp_transfer_frame, buf)); + printf("Address of tx_data = %p, p = %p\n", tx_data, p); + + printf("sizeof rp_transfer_frame = %d, sizeof pkt = %d\n", sizeof(struct usrp_transfer_frame), sizeof(struct pkt)); + + for (i=0; i < packet_data_length; i++) +// p->data[i] = random() >> 16; + p->data[i] = i; + + tx_data->flags = 0; + tx_data->len = 8 + packet_data_length * 2; + + printf("tx_data->len = %d\n", tx_data->len); + + seq_number = 1; + + while (1) { +// printf("tx flags = %X, len = %d\n", tx_data->flags, tx_data->len); + p->seq_num = seq_number++; + p->checksum = calc_checksum(p); + cnt = write(fp, tx_data, 2048); + if (cnt < 0) + printf("Error returned from write: %d\n", cnt); +// sleep(1); + } +} + + +int main(int argc, char *argv[]) +{ + pthread_t tx, rx; + long int t; + int fpga_config_flag ,decimation; + struct usrp_e_ctl16 d; + + if (argc < 4) { + printf("%s t|w|rw decimation data_size\n", argv[0]); + return -1; + } + + decimation = atoi(argv[2]); + packet_data_length = atoi(argv[3]); + + fp = open("/dev/usrp_e0", O_RDWR); + printf("fp = %d\n", fp); + + fpga_config_flag = 0; + if (strcmp(argv[1], "w") == 0) + fpga_config_flag |= (1 << 15); + else if (strcmp(argv[1], "r") == 0) + fpga_config_flag |= (1 << 14); + else if (strcmp(argv[1], "rw") == 0) + fpga_config_flag |= ((1 << 15) | (1 << 14)); + + fpga_config_flag |= decimation; + + d.offset = 14; + d.count = 1; + d.buf[0] = fpga_config_flag; + ioctl(fp, USRP_E_WRITE_CTL16, &d); + + sleep(1); // in case the kernel threads need time to start. FIXME if so + + if (fpga_config_flag & (1 << 14)) { + if (pthread_create(&rx, NULL, read_thread, (void *) t)) { + printf("Failed to create rx thread\n"); + exit(-1); + } + } + + sleep(1); + + if (fpga_config_flag & (1 << 15)) { + if (pthread_create(&tx, NULL, write_thread, (void *) t)) { + printf("Failed to create tx thread\n"); + exit(-1); + } + } + + sleep(10000); + + printf("Done sleeping\n"); +} |