mirror of
https://github.com/davidgiven/fluxengine.git
synced 2025-10-31 11:17:01 -07:00
607bb141b3
then we read the pulsetrain into nice tidy bits with a proper clock, which makes the decoder's job way easier. We can actually get rid of the entire MFM decoder state machine. Also, after sorting out the magic bit patterns at the beginning of records, we can now reliably pull them out of the bitstream without needing to know anything about the records themselves.
91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
#include "globals.h"
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#include <stdarg.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <libusb.h>
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void error(const char* message, ...)
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{
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va_list ap;
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va_start(ap, message);
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fprintf(stderr, "fluxengine: ");
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vfprintf(stderr, message, ap);
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fprintf(stderr, "\n");
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va_end(ap);
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exit(1);
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}
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double gettime(void)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return (double)tv.tv_sec + tv.tv_usec/1000000.0;
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}
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int countargs(char* const* argv)
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{
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int count = 0;
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while (*argv++)
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count++;
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return count;
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}
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void syntax_error(void)
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{
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error("syntax error (try -h for help)");
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}
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static char* const* parse_global_options(char* const* argv)
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{
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for (;;)
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{
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switch (getopt(countargs(argv), argv, "+ht:"))
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{
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case -1:
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return argv + optind;
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case 'h':
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error("sorry, no help yet");
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default:
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syntax_error();
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}
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}
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}
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int main(int argc, char* const* argv)
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{
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argv = parse_global_options(argv);
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usb_init();
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/* Just check that a FluxEngine is plugged in. */
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(void) usb_get_version();
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if (!argv[0])
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syntax_error();
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if (strcmp(argv[0], "rpm") == 0)
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cmd_rpm(argv);
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else if (strcmp(argv[0], "usbbench") == 0)
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cmd_usbbench(argv);
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else if (strcmp(argv[0], "read") == 0)
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cmd_read(argv);
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else if (strcmp(argv[0], "write") == 0)
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cmd_write(argv);
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else if (strcmp(argv[0], "mfmdecode") == 0)
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cmd_mfmdecode(argv);
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else if (strcmp(argv[0], "testpattern") == 0)
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cmd_testpattern(argv);
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else if (strcmp(argv[0], "fluxdump") == 0)
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cmd_fluxdump(argv);
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else if (strcmp(argv[0], "calibrate") == 0)
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cmd_calibrate(argv);
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else if (strcmp(argv[0], "getclock") == 0)
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cmd_getclock(argv);
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else
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syntax_error();
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return 0;
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} |