FreeCalypso > hg > freecalypso-tools

annotate miscutil/fc-pulse-dtr.c @ 752:c79aaed75bd8

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compile-fc-batt: allow possible third field in source lines Battery tables maintained in the fc-battery-conf repository will now have a third field added, defining thresholds for the battery bars icon, and there will be a new utility to compile them into the new /etc/batterytab2 file read by the FC Tourmaline version of our FCHG driver. For backward compatibility with the original Magnetite version of FCHG, compile-fc-batt remains the tool for compiling the original /etc/batterytab file format, and it needs to ignore the newly added third field in battery table sources.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 05 Nov 2020 20:37:55 +0000
parents 5b8287c655cf
children
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5b8287c655cf fc-pulse-dtr and fc-pulse-rts utilities implemented
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1 /*
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2 * This utility opens a serial port, asserts DTR for 50 ms, then negates it
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3 * and exits. It is intended for use with FreeCalypso DUART28C adapters.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <sys/file.h>
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8 #include <sys/ioctl.h>
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11 #include <unistd.h>
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12
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13 main(argc, argv)
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14 char **argv;
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15 {
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16 int target_fd;
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17 int mctl_arg = TIOCM_DTR;
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18
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19 if (argc != 2) {
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20 fprintf(stderr, "usage: %s ttyname\n", argv[0]);
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21 exit(1);
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22 }
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23 target_fd = open(argv[1], O_RDWR|O_NONBLOCK);
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24 if (target_fd < 0) {
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25 perror(argv[1]);
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26 exit(1);
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27 }
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28 ioctl(target_fd, TIOCMBIS, &mctl_arg);
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29 usleep(50000);
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30 ioctl(target_fd, TIOCMBIC, &mctl_arg);
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31 exit(0);
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32 }