FreeCalypso > hg > fc-usbser-tools
view cp2102/read_baudtab.c @ 79:f14d04e4d85d
doc/FTDI-EEPROM-format: document ftdi-chip and eeprom settings
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 26 Sep 2023 02:44:52 +0000 |
parents | ae8075bcc029 |
children | 8d35346f1d46 |
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/* * This program locates a CP2102 device via libusb, reads its internal * 1024-byte EEPROM, decodes the baud rate table portion thereof * and prints the decoded table. */ #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" u_char eeprom[SIZE_EEPROM]; main(argc, argv) char **argv; { struct usb_device *dev; usb_dev_handle *usbh; if (argc != 2) { fprintf(stderr, "usage: %s device-selector\n", argv[0]); exit(1); } dev = find_usbdev_by_desc_string(argv[1]); if (!dev) { fprintf(stderr, "error: specified USB device not found\n"); exit(1); } usbh = usb_open(dev); if (!usbh) { fprintf(stderr, "error: usb_open() failed\n"); exit(1); } read_eeprom(usbh); usb_close(usbh); decode_baud_table(stdout); exit(0); }