FreeCalypso > hg > freecalypso-tools

annotate target-utils/simagent/byterx.c @ 942:fab04df64690

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rvinterf/lowlevel: replace libg23 with libprint
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 24 May 2023 06:55:54 +0000
parents c136a1a2474b
children
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771
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1 #include <stdlib.h>
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2 #include "types.h"
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3 #include "simregs.h"
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4 #include "timeout.h"
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5
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6 rx_sim_byte(count)
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7 unsigned count;
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8 {
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9 for (; count; count--) {
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10 if (!(SIMREGS.stat & SIM_STAT_FEMPTY))
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11 return SIMREGS.drx;
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12 }
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13 return(-1);
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14 }
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15
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16 rx_sim_byte_hl()
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17 {
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18 int rc;
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19 unsigned parcnt;
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20
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21 for (parcnt = 0; parcnt < 3; parcnt++) {
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22 rc = rx_sim_byte(SIM_WAIT_TIMEOUT);
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23 if (rc < 0) {
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24 printf("ERROR: timeout waiting for SIM response\n");
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25 return(-1);
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26 }
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27 if (rc & 0x100)
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28 return rc & 0xFF;
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29 }
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30 printf("ERROR: received bad parity 3 times in a row\n");
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31 return(-1);
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32 }
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33
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34 flush_rx_fifo()
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35 {
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36 unsigned count;
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37
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38 for (count = 0; ; ) {
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39 if (SIMREGS.stat & SIM_STAT_FEMPTY)
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40 break;
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41 (void) SIMREGS.drx;
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42 if (++count >= 32) {
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43 printf("ERROR: Rx FIFO flush does not end\n");
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44 return(-1);
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45 }
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46 }
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47 return(0);
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48 }
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49
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50 void
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51 cmd_sertimeout(argbulk)
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52 char *argbulk;
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53 {
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54 char *argv[2];
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55 int count;
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56
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57 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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58 return;
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59 count = atoi(argv[0]);
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60 rx_sim_byte(count);
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61 }