FreeCalypso > hg > fc-sim-sniff

annotate sw/sniff-rx/byteproc.c @ 22:b112c2df6c43

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
sw: simtrace3-sniff-rx program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 22 Aug 2023 06:16:44 +0000
parents
children 43f678895a3a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
22
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * In this module we implement byte-level processing of the serial stream
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * coming from the sniffer FPGA.
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 */
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <sys/time.h>
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <stdio.h>
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <stdlib.h>
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <time.h>
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 extern FILE *main_outf;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 extern int logfile_flag;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 extern struct timeval curtime;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 extern struct tm *cur_tm;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 static int byte_pending_flag, byte_pending_val;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 void
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 rx_byte_in(new_byte)
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 {
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 if (!byte_pending_flag) {
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 byte_pending_flag = 1;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 byte_pending_val = new_byte;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 return;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 }
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 /* received complete 2-byte message from the FPGA */
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 fprintf(main_outf, "[%02d:%02d:%02d.%06u] %02X%02X\n", cur_tm->tm_hour,
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 cur_tm->tm_min, cur_tm->tm_sec, (unsigned) curtime.tv_usec,
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 new_byte, byte_pending_val);
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 byte_pending_flag = 0;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 if (logfile_flag && (new_byte & 0x80))
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 printf("SIM RST is %s\n", new_byte & 0x40 ? "high" : "low");
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 }
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 void
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 flush_pending_byte()
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 {
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 if (!byte_pending_flag)
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 return;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 printf("BAD BAD BAD: loss of byte sync with FPGA source!\n");
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 byte_pending_flag = 0;
b112c2df6c43 sw: simtrace3-sniff-rx program written, compiles
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 }