FreeCalypso > hg > freecalypso-tools
annotate libserial-posix/openport.c @ 924:d452188587b4
rvinterf: begin change to backslash escape output format
Right now throughout the rvinterf suite, any time we emit output that
is expected to be ASCII, but may contain non-printable garbage, we use
'cat -v' form of garbage character representation. Unfortunately, this
transformation is lossy (can't be reversed 100% reliably in the user's
wetware), hence we would like to migrate to C-style backslash escapes,
including doubling of any already-present backslashes - this escape
mechanism is lossless. Begin this change by converting the output
of RV and L1 traces in rvinterf and rvtdump.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 23 May 2023 03:10:50 +0000 |
parents | fd7b447b99e3 |
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1 /* |
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2 * This module implements the basic serial port opening operation. |
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3 */ |
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4 |
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5 #include <sys/types.h> |
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6 #include <sys/file.h> |
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7 #include <sys/ioctl.h> |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include <unistd.h> |
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11 |
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12 int target_fd; |
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13 |
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14 open_serial_port(ttyport) |
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15 char *ttyport; |
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16 { |
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17 target_fd = open(ttyport, O_RDWR|O_NONBLOCK); |
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18 if (target_fd < 0) { |
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19 perror(ttyport); |
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20 exit(1); |
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21 } |
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22 ioctl(target_fd, TIOCEXCL); |
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23 return 0; |
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24 } |