From 2b1768b107b2744dedac49b246fcec81e8d307af Mon Sep 17 00:00:00 2001
From: hackbard <hackbard>
Date: Tue, 13 Feb 2007 00:40:18 +0000
Subject: [PATCH] initial checkin of usb_bulk_test code

---
 fx2/usb_bulk_test.c | 145 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 fx2/usb_bulk_test.c

diff --git a/fx2/usb_bulk_test.c b/fx2/usb_bulk_test.c
new file mode 100644
index 0000000..f68309a
--- /dev/null
+++ b/fx2/usb_bulk_test.c
@@ -0,0 +1,145 @@
+/*
+ * usb_bulk_test.c - test fx2 bulktransfer
+ *
+ * usage: ./usb_bulk_test device iface alt_setting ep_out ep_in
+ * build: gcc -Wall -O3 usb_bulk_test.c -o usb_bulk_test
+ *
+ * author:hackbard@hackdaworld.org
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <linux/version.h>
+#include <linux/usb.h>
+#include <linux/usbdevice_fs.h>
+
+#define BUFLEN		(1024*10)
+#define BULKMAX		256
+#define TIMEOUT		1
+
+
+int main(int argc,char **argv) {
+
+	int usb_fd;
+	int random_fd;
+	int left;
+	int ret,rx,tmp;
+	unsigned char *tbuf;
+	struct usbdevfs_bulktransfer tbulk;
+	unsigned char *rbuf;
+	struct usbdevfs_bulktransfer rbulk;
+	struct usbdevfs_setinterface iface;
+
+
+	if(argc!=6) {
+		printf("usage: %s device iface alt_setting ep_out ep_in\n",
+		       argv[0]);
+		return -1;
+	}
+
+	tbuf=(unsigned char *)malloc(BUFLEN);
+	rbuf=(unsigned char *)malloc(BUFLEN);
+	if((rbuf==NULL)||(tbuf==NULL)) {
+		perror("malloc test buffer");
+		return -1;
+	}
+
+	usb_fd=open(argv[1],O_RDWR);
+	if(usb_fd<0) {
+		perror("open usb device");
+		return usb_fd;
+	}
+
+	random_fd=open("/dev/urandom",O_RDONLY);
+	if(random_fd<0) {
+		perror("open random device");
+		return random_fd;
+	}
+	printf("\npoke random data into buffer ...");
+	fflush(stdout);
+	left=BUFLEN;
+	while(left)
+		left-=read(random_fd,&(tbuf[BUFLEN-left]),left);
+	printf(" done\n");
+	close(random_fd);
+	
+	iface.interface=atoi(argv[2]);
+	iface.altsetting=atoi(argv[3]);
+
+	tbulk.ep=strtoul(argv[4],0,16);
+	tbulk.timeout=TIMEOUT;
+	tbulk.data=&tbuf;
+
+	rbulk.ep=strtoul(argv[5],0,16);
+	rbulk.timeout=TIMEOUT;
+	rbulk.data=&rbuf;
+
+	printf("\n");
+	printf("summary:\n");
+	printf("device %s\n",argv[1]);
+	printf("interface %d\n",iface.interface);
+	printf("alternate setting %d\n",iface.altsetting);
+	printf("bulk ep (out) %0x2\n",tbulk.ep);
+	printf("bulk ep (in) %0x2\n",rbulk.ep);
+	printf("\n");
+
+	printf("setting interface %d, alternate setting %d\n",
+	       iface.interface,
+	       iface.altsetting);
+
+	ret=ioctl(usb_fd,USBDEVFS_SETINTERFACE,&iface);
+	if(ret<0) {
+		perror("set interface");
+		return ret;
+	}
+
+	left=BUFLEN;
+	while(left) {
+		tbulk.data=&(tbuf[BUFLEN-left]);
+		rbulk.data=&(rbuf[BUFLEN-left]);
+		tbulk.len=BULKMAX;
+		printf("transmit ");
+		fflush(stdout);
+		ret=ioctl(usb_fd,USBDEVFS_BULK,&tbulk);
+		if(ret<0) {
+			perror("transmitting data");
+			return ret;
+		}
+		printf("done (%d) - receive ",ret);
+		fflush(stdout);
+
+		rx=0;
+		while(ret) {
+			rbulk.len=ret;
+			rbulk.data=&(rbuf[BUFLEN-left+rx]);
+			tmp=ioctl(usb_fd,USBDEVFS_BULK,&rbulk);
+				if(tmp<0) {
+					perror("receiving data");
+					return tmp;
+				}
+			printf("[%d] ",tmp);
+			rx+=tmp;
+			ret-=tmp;
+		}
+		printf("done (%d)",rx);
+
+		if(!memcmp(&tbuf[BUFLEN-left],&rbuf[BUFLEN-left],rx))
+			printf(" <--- equal!\n");
+		else
+			printf(" <--- differ! :(\n");
+
+		left-=rx;
+	}
+
+	close(usb_fd);
+
+	return 0;
+}
-- 
2.39.2