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annotate sw/libserial/openport.c @ 2:a4918a161d2e

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sw: starting with libserial, copied from fc-sim-sniff
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 11 Oct 2024 22:37:11 +0000
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a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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2 * This module implements the basic serial port opening operation.
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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3 */
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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4
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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5 #include <sys/types.h>
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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6 #include <sys/file.h>
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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7 #include <sys/ioctl.h>
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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8 #include <stdio.h>
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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9 #include <stdlib.h>
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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10 #include <unistd.h>
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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11
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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12 int target_fd;
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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13
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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14 open_serial_port(ttyport)
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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15 char *ttyport;
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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16 {
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Mychaela Falconia <falcon@freecalypso.org>
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17 target_fd = open(ttyport, O_RDWR|O_NONBLOCK);
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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18 if (target_fd < 0) {
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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19 perror(ttyport);
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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20 exit(1);
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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21 }
a4918a161d2e sw: starting with libserial, copied from fc-sim-sniff
Mychaela Falconia <falcon@freecalypso.org>
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22 ioctl(target_fd, TIOCEXCL);
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Mychaela Falconia <falcon@freecalypso.org>
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23 return 0;
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Mychaela Falconia <falcon@freecalypso.org>
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24 }