47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* scan.c - Phase 1 barcode diagnostic: read the integral laser via WL2:A.
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*
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* demman reports the scanner's port as WL2:A (decoder "Symbol"), so the
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* integral MX laser is driven by the resident WL2 driver - not BAR:, not
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* TTY:D. WL2 is not documented in this SDK, so this opens WL2:A and dumps what
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* a read returns, to learn its format. It uses the barcode-style read
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* (p_iow(pcb, P_FREAD, buf), count typically in buf[0]) and prints the first
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* bytes both as decimal and as text.
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*
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* Press the scan key to trigger a scan while the read is waiting.
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*/
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#include <plib.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[256];
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INT err, r, i, cnt;
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err = p_open(&chan, "WL2:A", (UINT)-1);
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p_printf("open WL2:A: %d\n", err);
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if (err < 0) {
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p_printf("Press a key to exit.\n");
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p_getch();
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return 1;
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}
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p_printf("Scan now (press the scan key). Dumping reads:\n\n");
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for (;;) {
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r = p_iow(chan, P_FREAD, buf);
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if (r < 0) {
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p_printf("read status %d\n", r);
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continue;
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}
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cnt = buf[0];
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p_printf("r=%d b0=%d:", r, cnt);
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for (i = 0; i < 24 && i < 256; i++)
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p_printf(" %d", buf[i]);
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p_printf(" \"");
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for (i = 0; i < 24 && i < 256; 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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