From 411df5ce4ca6463f0af32659d397c91554d73271 Mon Sep 17 00:00:00 2001
From: hackbard <hackbard>
Date: Sun, 26 Feb 2006 14:19:34 +0000
Subject: [PATCH] messing around with usb_*

---
 gemtag/gemtag.c | 45 ++++++++++++++++++++++++++-------------------
 1 file changed, 26 insertions(+), 19 deletions(-)

diff --git a/gemtag/gemtag.c b/gemtag/gemtag.c
index 9656f01..bca97eb 100644
--- a/gemtag/gemtag.c
+++ b/gemtag/gemtag.c
@@ -27,7 +27,6 @@
 int hexdump(unsigned char *data,int len) {
 	int i;
 
-	printf("dump: ");
 	for(i=0;i<len;i++) printf("%02x ",data[i]);
 	printf("\n");
 
@@ -98,34 +97,36 @@ int gemtag_transcieve(struct gemtag_handle *gh,unsigned char cmd,
 	memcpy(txbuf+size,tx,tx_len);
 
 	/* crc check */
-	gh->capabilities=GEMTAG_CAP_CRC;
 	if(gh->capabilities&GEMTAG_CAP_CRC) {
 		size+=tx_len;
 		crcptr=(u_int16_t *)(txbuf+size);
-		*crcptr=gemtag_calc_crc(txbuf,size);
+		*crcptr=htons(gemtag_calc_crc(txbuf,size));
 		size+=2;
 	}
 
 	/* usb write */
+	printf("-> ");
 	hexdump(txbuf,size);
+	usb_clear_halt(gh->handle,0x02);
 	ret=usb_bulk_write(gh->handle,0x02,txbuf,size,0);
-	if(ret<0) {
+	if(ret<=0) {
 		perror("usb bulk write");
 		return ret;
 	}
-	printf("write of %d bytes successfull\n",ret);
 
 	/* usb read */
+	usb_clear_halt(gh->handle,0x81);
 	ret=usb_bulk_read(gh->handle,0x81,rxbuf,sizeof(rxbuf),0);
 	size=ret;
-	if(ret<0) {
+	if(ret<=0) {
 		perror("usb bulk read");
 		return ret;
 	}
-	printf("received %d bytes\n",ret);
+	printf("-> ");
+	hexdump(rxbuf,ret);
 	
 	if(rxhdr->seq!=txhdr->seq)
-		puts("transmitted/recieved header are not equal");
+		puts("transmitted/recieved sequence number do not match");
 
 	/* crc check */
 	
@@ -144,6 +145,7 @@ struct gemtag_handle *gemtag_open(void) {
 	unsigned int rlen;
 	unsigned int i,numconf;
 	unsigned int j,numint;
+	unsigned int k,numalt;
 	struct gemtag_handle *gh;
 
 	rlen=sizeof(rbuf);
@@ -161,15 +163,22 @@ struct gemtag_handle *gemtag_open(void) {
 	memset(gh,0,sizeof(struct gemtag_handle));
 
 	numconf=gemtag->descriptor.bNumConfigurations;
-	printf("found gemtag, %u configuration(s)\n",numconf);
+	printf("found gemtag (%02x/%02x), %u configuration(s)\n",
+	       gemtag->descriptor.idVendor,
+	       gemtag->descriptor.idProduct,numconf);
 	for(i=0;i<numconf;i++) {
 		numint=gemtag->config[i].bNumInterfaces;
-		printf("config %u [nr %u] has %u interface(s)\n",
+		printf("  config %u [nr %u] has %u interface(s)\n",
 		       i,gemtag->config[i].bConfigurationValue,
 		       numint);
 		for(j=0;j<numint;j++) {
-			printf("config %u interface %u has %u altsetting(s)\n",
-			       i,j,gemtag->config[i].interface[j].num_altsetting);
+			numalt=gemtag->config[i].interface[j].num_altsetting;
+			printf("    interface %u has %u altsetting(s): ",
+			       j,numalt);
+			for(k=0;k<numalt;k++)
+				printf("%u ",
+		gemtag->config[i].interface[j].altsetting[k].bAlternateSetting);
+			printf("\n");
 		}
 	}
 
@@ -190,16 +199,14 @@ struct gemtag_handle *gemtag_open(void) {
 	}
 	puts("interface 0 claimed");
 
-/*	if(usb_set_altinterface(gh->handle,1)) {
-		perror("set alt interface");
-		goto out_free;
-	}
-	puts("alt setting 1 selected");
-*/
+	while(usb_set_altinterface(gh->handle,0))
+		printf("trying to set alt interface\n");
+	puts("alt setting 0 selected");
 
 	gh->capabilities|=GEMTAG_CAP_CRC;
 
-	gemtag_transcieve(gh,0x22,NULL,0,rbuf,&rlen);
+	gemtag_transcieve(gh,GEMTAG_CMD_GET_FW_VERSION,
+	                  NULL,0,rbuf,&rlen);
 
 	return gh;
 
-- 
2.20.1