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Diffstat (limited to 'pc/main.c')
| -rw-r--r-- | pc/main.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/pc/main.c b/pc/main.c new file mode 100644 index 0000000..fe0d75d --- /dev/null +++ b/pc/main.c @@ -0,0 +1,134 @@ +/* Name: set-led.c + * Project: custom-class, a basic USB example + * Author: Christian Starkjohann + * Creation Date: 2008-04-10 + * Tabsize: 4 + * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH + * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt) + */ + +/* +General Description: +This is the host-side driver for the custom-class example device. It searches +the USB for the LEDControl device and sends the requests understood by this +device. +This program must be linked with libusb on Unix and libusb-win32 on Windows. +See http://libusb.sourceforge.net/ or http://libusb-win32.sourceforge.net/ +respectively. +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <usb.h> /* this is libusb */ +#include "opendevice.h" /* common code moved to separate module */ + +#include "../firmware/requests.h" /* custom request numbers */ +#include "../firmware/usbconfig.h" /* device's VID/PID and names */ + +static void usage(char *name) +{ + fprintf(stderr, "usage:\n"); + fprintf(stderr, " %s on ....... turn on LED\n", name); + fprintf(stderr, " %s off ...... turn off LED\n", name); + fprintf(stderr, " %s status ... ask current status of LED\n", name); +#if ENABLE_TEST + fprintf(stderr, " %s test ..... run driver reliability test\n", name); +#endif /* ENABLE_TEST */ +} + +int main(int argc, char **argv) +{ +usb_dev_handle *handle = NULL; +const unsigned char rawVid[2] = {USB_CFG_VENDOR_ID}, rawPid[2] = {USB_CFG_DEVICE_ID}; +char vendor[] = {USB_CFG_VENDOR_NAME, 0}, product[] = {USB_CFG_DEVICE_NAME, 0}; +char buffer[4]; +int cnt, vid, pid, isOn; + + usb_init(); + if(argc < 2){ /* we need at least one argument */ + usage(argv[0]); + exit(1); + } + /* compute VID/PID from usbconfig.h so that there is a central source of information */ + vid = rawVid[1] * 256 + rawVid[0]; + pid = rawPid[1] * 256 + rawPid[0]; + /* The following function is in opendevice.c: */ + if(usbOpenDevice(&handle, vid, vendor, pid, product, NULL, NULL, NULL) != 0){ + fprintf(stderr, "Could not find USB device \"%s\" with vid=0x%x pid=0x%x\n", product, vid, pid); + exit(1); + } + /* Since we use only control endpoint 0, we don't need to choose a + * configuration and interface. Reading device descriptor and setting a + * configuration and interface is done through endpoint 0 after all. + * However, newer versions of Linux require that we claim an interface + * even for endpoint 0. Enable the following code if your operating system + * needs it: */ +#if 0 + int retries = 1, usbConfiguration = 1, usbInterface = 0; + if(usb_set_configuration(handle, usbConfiguration) && showWarnings){ + fprintf(stderr, "Warning: could not set configuration: %s\n", usb_strerror()); + } + /* now try to claim the interface and detach the kernel HID driver on + * Linux and other operating systems which support the call. */ + while((len = usb_claim_interface(handle, usbInterface)) != 0 && retries-- > 0){ +#ifdef LIBUSB_HAS_DETACH_KERNEL_DRIVER_NP + if(usb_detach_kernel_driver_np(handle, 0) < 0 && showWarnings){ + fprintf(stderr, "Warning: could not detach kernel driver: %s\n", usb_strerror()); + } +#endif + } +#endif + + if(strcasecmp(argv[1], "status") == 0){ + cnt = usb_control_msg(handle, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN, CUSTOM_RQ_GET_STATUS, 0, 0, buffer, sizeof(buffer), 5000); + if(cnt < 1){ + if(cnt < 0){ + fprintf(stderr, "USB error: %s\n", usb_strerror()); + }else{ + fprintf(stderr, "only %d bytes received.\n", cnt); + } + }else{ + printf("LED is %s\n", buffer[0] ? "on" : "off"); + } + }else if((isOn = (strcasecmp(argv[1], "on") == 0)) || strcasecmp(argv[1], "off") == 0){ + cnt = usb_control_msg(handle, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT, CUSTOM_RQ_SET_STATUS, isOn, 0, buffer, 0, 5000); + if(cnt < 0){ + fprintf(stderr, "USB error: %s\n", usb_strerror()); + } +#if ENABLE_TEST + }else if(strcasecmp(argv[1], "test") == 0){ + int i; + srandomdev(); + for(i = 0; i < 50000; i++){ + int value = random() & 0xffff, index = random() & 0xffff; + int rxValue, rxIndex; + if((i+1) % 100 == 0){ + fprintf(stderr, "\r%05d", i+1); + fflush(stderr); + } + cnt = usb_control_msg(handle, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN, CUSTOM_RQ_ECHO, value, index, buffer, sizeof(buffer), 5000); + if(cnt < 0){ + fprintf(stderr, "\nUSB error in iteration %d: %s\n", i, usb_strerror()); + break; + }else if(cnt != 4){ + fprintf(stderr, "\nerror in iteration %d: %d bytes received instead of 4\n", i, cnt); + break; + } + rxValue = ((int)buffer[0] & 0xff) | (((int)buffer[1] & 0xff) << 8); + rxIndex = ((int)buffer[2] & 0xff) | (((int)buffer[3] & 0xff) << 8); + if(rxValue != value || rxIndex != index){ + fprintf(stderr, "\ndata error in iteration %d:\n", i); + fprintf(stderr, "rxValue = 0x%04x value = 0x%04x\n", rxValue, value); + fprintf(stderr, "rxIndex = 0x%04x index = 0x%04x\n", rxIndex, index); + } + } + fprintf(stderr, "\nTest completed.\n"); +#endif /* ENABLE_TEST */ + }else{ + usage(argv[0]); + exit(1); + } + usb_close(handle); + return 0; +} |