FreeCalypso > hg > freecalypso-tools
annotate libpwon/duart28c.c @ 926:6a0aa8d36d06
rvinterf backslash escape: introduce libprint
The new helper function library named libprint is meant to replace
the badly misnamed libg23, and will soon contain functions for
printing all of the same kinds of GPF TST packets that are now handled
in libg23. However, we are also moving safe_print_trace() from libasync
to this new library, and changing it to emit our new backslash escape
format.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 23 May 2023 03:47:46 +0000 |
parents | 7d1df6d831e4 |
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rev | line source |
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libpwon: added -Pdtr and -Prts support for DUART28C
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1 #include <sys/types.h> |
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2 #include <sys/ioctl.h> |
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3 #include <stdio.h> |
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4 #include <stdlib.h> |
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5 #include <string.h> |
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6 #include <strings.h> |
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7 #include <unistd.h> |
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8 |
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9 extern int target_fd; |
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10 |
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11 int bootctrl_duart28c_mode; |
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12 static int mctl_arg; |
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13 |
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14 bootctrl_check_duart28c(bc_name) |
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15 char *bc_name; |
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16 { |
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17 if (!strcmp(bc_name, "dtr")) { |
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18 bootctrl_duart28c_mode = 1; |
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19 mctl_arg = TIOCM_DTR; |
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20 return 1; |
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21 } |
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22 if (!strcmp(bc_name, "rts")) { |
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23 bootctrl_duart28c_mode = 1; |
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24 mctl_arg = TIOCM_RTS; |
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25 return 1; |
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26 } |
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27 return 0; |
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28 } |
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29 |
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30 void |
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31 fork_duart28c_pulse() |
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32 { |
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33 int i; |
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34 |
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35 i = fork(); |
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36 if (i < 0) { |
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37 perror("fork"); |
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38 exit(1); |
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39 } |
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40 if (i) |
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41 return; |
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42 ioctl(target_fd, TIOCMBIS, &mctl_arg); |
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43 usleep(50000); |
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44 ioctl(target_fd, TIOCMBIC, &mctl_arg); |
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45 exit(0); |
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46 } |