First version

commandline/usb-servo.c

@@ -0,0 +1,75 @@
+/**
+ * \file usb-servo.c
+ * \brief Commandline-tool for the USB-Servo.
+ * \author Ronald Schaten
+ * \version $Id: usb-servo.c,v 1.1 2006/10/28 12:40:42 rschaten Exp $
+ *
+ * License: See documentation.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <usb.h>                /* this is libusb, see
+                                   http://libusb.sourceforge.net/ */
+
+#include "usbdrv.h"
+
+/**
+ * Displays usage-information. This function is called if the parameters cannot
+ * be parsed.
+ * \param name The name of this application.
+ */
+void usage(char *name) {
+    fprintf(stderr, "usage:\n");
+    fprintf(stderr, "  %s status\n", name);
+    fprintf(stderr, "  %s set <angle>\n", name);
+    fprintf(stderr, "  %s test\n\n", name);
+    fprintf(stderr, "parameters:\n");
+    fprintf(stderr, "  angle: Required angle for the servo.\n");
+}
+
+/**
+ * Main function. Initializes the USB-device, parses commandline-parameters and
+ * calls the functions that communicate with the device.
+ * \param argc Number of arguments.
+ * \param argv Arguments.
+ * \return Error code.
+ */
+int main(int argc, char **argv) {
+    usb_dev_handle *handle = NULL;
+
+    if (argc < 2) {
+        usage(argv[0]);
+        exit(1);
+    }
+    usb_init();
+    if (usbOpenDevice(&handle, USBDEV_SHARED_VENDOR, "www.schatenseite.de",
+         USBDEV_SHARED_PRODUCT, "USB-Servo") != 0) {
+        fprintf(stderr,
+                "Could not find USB device \"USB-Servo\" with vid=0x%x pid=0x%x\n",
+                USBDEV_SHARED_VENDOR, USBDEV_SHARED_PRODUCT);
+        exit(1);
+    }
+    /* We have searched all devices on all busses for our USB device
+       above. Now try to open it and perform the vendor specific control
+       operations for the function requested by the user. */
+    if (strcmp(argv[1], "test") == 0) {
+        if (dev_test(handle, argc, argv) != 0) {
+            usage(argv[1]);
+        }
+    } else if (strcmp(argv[1], "set") == 0) {
+        if (dev_set(handle, argc, argv) != 0) {
+            usage(argv[1]);
+        }
+    } else if (strcmp(argv[1], "status") == 0) {
+        if (dev_status(handle, argc, argv) != 0) {
+            usage(argv[1]);
+        }
+    } else {
+        usage(argv[0]);
+        exit(1);
+    }
+    usb_close(handle);
+    return 0;
+}