FreeCalypso > hg > fc-usbser-tools

annotate libuwrap/prelim_init.c @ 71:0b37be8b23ca

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doc/FTDI-EEPROM-format: document string descriptors
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 24 Sep 2023 22:27:38 +0000
parents ab506f6aa57c
children
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * libftdi-0.20 performs these preliminary steps just before it goes
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3 * looking for the device of interest via usb_get_busses() followed
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4 * by traversal of the returned tree - hence we do likewise.
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <usb.h>
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10 #include "prelim_init.h"
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11
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12 void libusb_prelim_init(void)
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13 {
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14 usb_init();
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15 if (usb_find_busses() < 0) {
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16 fprintf(stderr, "error: usb_find_busses() failed\n");
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17 exit(1);
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18 }
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19 if (usb_find_devices() < 0) {
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20 fprintf(stderr, "error: usb_find_devices() failed\n");
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21 exit(1);
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22 }
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23 }