FreeCalypso > hg > freecalypso-tools

annotate rvinterf/lowlevel/rviflcd.c @ 402:817f3b5f019e

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doc/RF_tables: typo fix
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 18 Mar 2018 08:37:23 +0000
parents a626f0ef542a
children
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1 /*
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2 * This rvinterf module implements the piping of LCD output to fc-lcdemu
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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 <stdio.h>
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7 #include <string.h>
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8 #include <strings.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 extern u_char rxpkt[];
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13 extern size_t rxpkt_len;
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15 char *extlcd_program;
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16 FILE *extlcd_pout;
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18 void
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19 open_extlcd_pipe()
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20 {
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21 extlcd_pout = popen(extlcd_program, "w");
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22 if (!extlcd_pout) {
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23 perror(extlcd_program);
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24 exit(1);
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25 }
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26 }
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28 void
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29 output_to_extlcd()
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30 {
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31 int i;
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32
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33 fprintf(extlcd_pout, "%u %u ", rxpkt[1], rxpkt[2]);
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34 for (i = 3; i < rxpkt_len; i += 2)
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35 fprintf(extlcd_pout, "%02X%02X", rxpkt[i+1] ^ 0xFF,
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36 rxpkt[i] ^ 0xFF);
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37 fputc('\n', extlcd_pout);
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38 fflush(extlcd_pout);
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39 }