55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/*
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* scan.c - Phase 1 barcode diagnostic for the Workabout MX integral laser.
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*
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* Loads the EAN/UPC decoder LDD (BAREAN.LDD), opens the decoder device (BAR:),
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* and dumps every byte of each read so the decoded format (length, any prefix
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* or type byte, terminator) can be confirmed.
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*
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* The load and open results are printed and then a key is waited for BEFORE
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* anything else, so the numbers stay on screen even if the open fails (a failed
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* open would otherwise return instantly and the System screen would wipe the
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* message). Blocking I/O throughout; exit via the System screen.
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*/
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#include <plib.h>
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#include "bcode.h"
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GLDEF_C INT main(VOID)
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{
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VOID *chan;
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UBYTE buf[64];
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INT loadErr, openErr, n, i;
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loadErr = bcodeLoad();
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openErr = bcodeOpen(&chan);
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/* Show both results and hold the screen until a key is pressed. */
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p_printf("load %s.LDD : %d\n", BCODE_LDD, loadErr);
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p_printf("open %s : %d\n", BCODE_DEV, openErr);
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p_printf("\n(0 = ok; for load, an 'already loaded' error is also ok)\n");
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p_printf("Press a key to continue...\n");
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p_getch();
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if (openErr < 0)
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return 1;
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p_printf("\n%s open. Scan a barcode. Exit via the System screen.\n\n",
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BCODE_DEV);
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for (;;) {
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n = p_read(chan, buf, sizeof(buf));
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if (n < 0) {
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p_printf("read err %d\n", n);
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continue;
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}
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if (n == 0)
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continue;
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p_printf("n=%d:", n);
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for (i = 0; i < n; i++)
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p_printf(" %d", buf[i]);
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p_printf(" \"");
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for (i = 0; i < n; i++)
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p_putch(buf[i] >= ' ' ? buf[i] : '.');
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p_printf("\"\n");
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}
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}
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