Sylvain Munaut | 0f91413 | 2009-12-22 21:53:22 +0100 | [diff] [blame] | 1 | |
| 2 | #include <stdio.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <unistd.h> |
| 5 | #include <string.h> |
| 6 | #include <sys/types.h> |
| 7 | #include <sys/stat.h> |
| 8 | #include <fcntl.h> |
| 9 | |
| 10 | #include "gps.h" |
| 11 | #include "ubx.h" |
| 12 | #include "ubx-parse.h" |
| 13 | #include "rrlp.h" |
| 14 | |
| 15 | static int |
| 16 | do_ubx_read(struct gps_assist_data *gps, const char *filename) |
| 17 | { |
| 18 | int rv, fd, i; |
| 19 | struct stat st; |
| 20 | void *buf; |
| 21 | |
| 22 | /* Load file */ |
| 23 | fd = open(filename, O_RDONLY); |
| 24 | if (fd < 0) |
| 25 | return -1; |
| 26 | |
| 27 | rv = fstat(fd, &st); |
| 28 | if (rv < 0) { |
| 29 | close(fd); |
| 30 | return -1; |
| 31 | } |
| 32 | |
| 33 | buf = malloc(st.st_size); |
| 34 | if (!buf) { |
| 35 | close(fd); |
| 36 | return -1; |
| 37 | } |
| 38 | |
| 39 | rv = read(fd, buf, st.st_size); |
| 40 | if (rv != st.st_size) { |
| 41 | free(buf); |
| 42 | close(fd); |
| 43 | return -1; |
| 44 | } |
| 45 | |
| 46 | /* Parse each message */ |
| 47 | for (i=0; i<st.st_size;) { |
| 48 | int rv; |
| 49 | rv = ubx_msg_dispatch(ubx_parse_dt, buf + i, st.st_size - i, gps); |
| 50 | if (rv < 0) |
| 51 | i++; /* Invalid message: try one byte later */ |
| 52 | else |
| 53 | i += rv; |
| 54 | } |
| 55 | |
| 56 | /* Done */ |
| 57 | free(buf); |
| 58 | close(fd); |
| 59 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | static int |
| 64 | do_rrlp(struct gps_assist_data *gps) |
| 65 | { |
| 66 | struct rrlp_assist_req ar; |
| 67 | void *pdus[64]; |
| 68 | int len[64]; |
| 69 | int i, rv; |
| 70 | |
| 71 | char *test = "\x28\x00\x80\x10\x01\x32\x00\x19\x4F\x07\x15\x04"; |
| 72 | |
| 73 | rrlp_decode_assistance_request(&ar, test, 12); |
| 74 | printf("%08x %016llx\n", ar.req_elems, (long long unsigned) ar.eph_svs); |
| 75 | |
| 76 | ar.req_elems = -1; |
| 77 | ar.eph_svs = -1LL; |
| 78 | rv = rrlp_gps_assist_pdus(gps, &ar, pdus, len, 64); |
| 79 | printf("%d\n", rv); |
| 80 | for (i=0; i<rv; i++) { |
| 81 | printf("%p %d\n", pdus[i], len[i]); |
| 82 | } |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | int main(int argc, char *argv[]) |
| 87 | { |
| 88 | struct gps_assist_data gps; |
| 89 | int rv; |
| 90 | |
| 91 | memset(&gps, 0x00, sizeof(gps)); |
| 92 | |
| 93 | rv = do_ubx_read(&gps, "data.ubx"); |
| 94 | |
| 95 | rv = do_rrlp(&gps); |
| 96 | |
| 97 | return 0; |
| 98 | } |
| 99 | |