From 97b63d0329774b558800adc48b35fe335b2724d2 Mon Sep 17 00:00:00 2001
From: Martin Meloun <meloumar@cmp.felk.cvut.cz>
Date: Fri, 9 Aug 2013 17:41:33 +0200
Subject: [PATCH] A simple host application to talk to ROCON through USB

Currently not integrated with OCERA framework, link with libusb.
---
 host/rocon-send_cmd/rocon-send_cmd.c | 99 ++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 host/rocon-send_cmd/rocon-send_cmd.c

diff --git a/host/rocon-send_cmd/rocon-send_cmd.c b/host/rocon-send_cmd/rocon-send_cmd.c
new file mode 100644
index 0000000..6504c8d
--- /dev/null
+++ b/host/rocon-send_cmd/rocon-send_cmd.c
@@ -0,0 +1,99 @@
+#include <usb.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ROCON setup */
+#define ROCON_VID           0x1669
+#define ROCON_PID           0x1023
+#define ROCON_CONFIGURATION 1
+#define ROCON_INTFERFACE    0
+
+/* Endpoints */
+#define EP_IN               0x81
+#define EP_OUT              0x01
+
+#define BUFFER_SIZE         1024
+
+int opening_rocon = 0;
+
+usb_dev_handle *open_dev(void)
+{
+	struct usb_bus *bus;
+	struct usb_device *dev;
+
+	for (bus = usb_get_busses(); bus; bus = bus->next)
+	{
+		for (dev = bus->devices; dev; dev = dev->next)
+		{
+			if (dev->descriptor.idVendor == ROCON_VID && dev->descriptor.idProduct == ROCON_PID)
+			{
+				opening_rocon = 1;
+				return usb_open(dev);
+			}
+		}
+	}
+	return NULL;
+}
+
+int main(int argc, char** argv)
+{
+	usb_dev_handle *dev = NULL;
+	char buffer[BUFFER_SIZE];
+	int ret;
+
+	/* Init */
+	usb_init();
+	usb_find_busses();
+	usb_find_devices();
+
+	/* Open device */
+	if (!(dev = open_dev()))
+	{
+		if (opening_rocon)
+			printf("Error opening ROCON:\n%s\n", usb_strerror());
+		else
+			printf("ROCON not connected!\n");
+		
+		return 1;
+	}
+
+	/* Set configuration */
+	if (usb_set_configuration(dev, ROCON_CONFIGURATION) < 0)
+	{
+		printf("Error setting configuration #%d:\n%s\n", ROCON_CONFIGURATION, usb_strerror());
+		usb_close(dev);
+		return 1;
+	}
+
+	/* Set interface */
+	if (usb_claim_interface(dev, ROCON_INTFERFACE) < 0)
+	{
+		printf("Error claiming interface #%d:\n%s\n", ROCON_INTFERFACE, usb_strerror());
+		usb_close(dev);
+		return 1;
+	}
+
+	/* Write command */
+	snprintf(buffer, sizeof(buffer), "%s\n", argv[1]);
+	ret = usb_bulk_write(dev, EP_OUT, buffer, strlen(buffer), 5000);
+	if (ret < 0)
+	{
+		printf("Error sending command %s:\n%s\n", argv[1], usb_strerror());
+		usb_release_interface(dev, 0);
+		usb_close(dev);
+		return 1;
+	}
+
+	/* Read response */
+	ret = usb_bulk_read(dev, EP_IN, buffer, sizeof(buffer), 5000);
+	if (ret < 0)
+		printf("Error reading response:\n%s\n", usb_strerror());
+
+	buffer[ret] = '\0';
+	printf(buffer);
+
+	usb_release_interface(dev, 0);
+	usb_close(dev);
+	return 0;
+}
+ 
-- 
2.39.2