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view cp2102/read_eeprom_main.c @ 107:bc3367755586 default tip
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author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 21 Nov 2023 22:11:09 +0000 |
parents | 1cacc1ae56f0 |
children |
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/* * This program locates a CP2102 device via libusb, reads its internal * 1024-byte EEPROM and writes (into a file) an image of this EEPROM * in the same Intel HEX format as used by cp210x-program-1.0, * the Python-language tool from 2014. */ #include <sys/types.h> #include <string.h> #include <strings.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <usb.h> #include "../libuwrap/find_dev.h" #include "cp210x_defs.h" extern struct usb_device *find_cp2102_device(); u_char eeprom[SIZE_EEPROM]; char *device_selector, *outfilename; process_cmdline(argc, argv) char **argv; { int c; extern int optind; extern char *optarg; while ((c = getopt(argc, argv, "d:")) != EOF) { switch (c) { case 'd': device_selector = optarg; continue; default: usage: fprintf(stderr, "usage: %s [-d device-selector] output-hex-file\n", argv[0]); exit(1); } } if (argc != optind + 1) goto usage; outfilename = argv[optind]; } main(argc, argv) char **argv; { struct usb_device *dev; usb_dev_handle *usbh; FILE *outf; process_cmdline(argc, argv); dev = find_cp2102_device(device_selector); usbh = usb_open(dev); if (!usbh) { fprintf(stderr, "error: usb_open() failed\n"); exit(1); } read_eeprom(usbh); usb_close(usbh); outf = fopen(outfilename, "w"); if (!outf) { perror(outfilename); exit(1); } intel_hex_out(eeprom, outf); fclose(outf); exit(0); }