-/* $Id: drv_USBLCD.c,v 1.16 2004/09/24 21:41:00 reinelt Exp $
+/* $Id: drv_USBLCD.c,v 1.17 2004/10/02 09:31:58 reinelt Exp $
*
* new style driver for USBLCD displays
*
*
*
* $Log: drv_USBLCD.c,v $
+ * Revision 1.17 2004/10/02 09:31:58 reinelt
+ * USBLCD driver modified to use libusb
+ *
* Revision 1.16 2004/09/24 21:41:00 reinelt
* new driver for the BWCT USB LCD interface board.
*
#include <sys/ioctl.h>
#include <sys/time.h>
+#ifdef HAVE_USB_H
+#include <usb.h>
+#endif
+
#include "debug.h"
#include "cfg.h"
#include "qprintf.h"
#include "drv_generic_text.h"
+#define USBLCD_VENDOR 0x10D2
+#define USBLCD_VENDOR2 0x1212
+#define USBLCD_DEVICE 0x0001
+
#define IOC_GET_HARD_VERSION 1
#define IOC_GET_DRV_VERSION 2
-static char Name[]="USBLCD";
+static char Name[] = "USBLCD";
-static char *Port=NULL;
+static char *Port = NULL;
+static int use_libusb = 0;
static int usblcd_file;
static unsigned char *Buffer;
static unsigned char *BufPtr;
+#ifdef HAVE_USB_H
+
+static usb_dev_handle *lcd;
+static int interface;
+
+extern int usb_debug;
+
+#endif
+
+extern int got_signal;
+
+
+
/****************************************/
/*** hardware dependant functions ***/
/****************************************/
+#ifdef HAVE_USB_H
+
+static int drv_UL_open (void)
+{
+ struct usb_bus *busses, *bus;
+ struct usb_device *dev;
+
+ lcd = NULL;
+
+ info ("%s: scanning for USBLCD...", Name);
+
+ usb_debug = 0;
+
+ usb_init();
+ usb_find_busses();
+ usb_find_devices();
+ busses = usb_get_busses();
+
+ for (bus = busses; bus; bus = bus->next) {
+ for (dev = bus->devices; dev; dev = dev->next) {
+ if (((dev->descriptor.idVendor == USBLCD_VENDOR) ||
+ (dev->descriptor.idVendor == USBLCD_VENDOR2)) &&
+ (dev->descriptor.idProduct == USBLCD_DEVICE)) {
+
+ unsigned int v = dev->descriptor.bcdDevice;
+
+ info ("%s: found USBLCD V%1d%1d.%1d%1d on bus %s device %s", Name,
+ (v & 0xF000)>>12,(v & 0xF00)>>8, (v & 0xF0)>>4, (v & 0xF),
+ bus->dirname, dev->filename);
+
+ interface = 0;
+ lcd = usb_open(dev);
+ if (usb_claim_interface(lcd, interface) < 0) {
+ error ("%s: usb_claim_interface() failed!", Name);
+ error ("%s: maybe you have the usblcd module loaded?", Name);
+ return -1;
+ }
+ return 0;
+ }
+ }
+ }
+ error ("%s: could not find a USBLCD", Name);
+ return -1;
+}
+
+
+static int drv_UL_close (void)
+{
+ usb_release_interface(lcd, interface);
+ usb_close(lcd);
+
+ return 0;
+}
+
+#endif
+
+
static void drv_UL_send ()
{
gettimeofday (&now, NULL);
#endif
- write(usblcd_file,Buffer,BufPtr-Buffer);
+ if (use_libusb) {
+#ifdef HAVE_USB_H
+ // Fixme: ep?
+ usb_bulk_write(lcd, 1, Buffer, BufPtr-Buffer, 1000);
+#endif
+ } else {
+ write(usblcd_file,Buffer,BufPtr-Buffer);
+ }
+
#if 0
gettimeofday (&end, NULL);
- debug ("send %d bytes in %d msec (%d usec/byte)", BufPtr-Buffer,
- (1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec)/1000,
+ debug ("send %d bytes in %d usec (%d usec/byte)", BufPtr-Buffer,
+ (1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec),
(1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec)/(BufPtr-Buffer));
#endif
- BufPtr=Buffer;
+ BufPtr = Buffer;
}
static int drv_UL_start (const char *section, const int quiet)
{
- int rows=-1, cols=-1;
+ int rows = -1, cols = -1;
int major, minor;
char *port, *s;
char buf[128];
if (Port) {
free(Port);
- Port=NULL;
+ Port = NULL;
}
- if ((port=cfg_get(section, "Port", NULL))==NULL || *port=='\0') {
+
+ if ((port = cfg_get(section, "Port", NULL)) == NULL || *port == '\0') {
error ("%s: no '%s.Port' entry from %s", Name, section, cfg_source());
return -1;
}
- if (port[0] == '/') {
- Port = strdup(port);
+
+ if (strcasecmp (port, "libusb") == 0) {
+#ifdef HAVE_USB_H
+ use_libusb = 1;
+ debug ("using libusb");
+#else
+ error ("%s: cannot use 'libusb' port.", Name);
+ error ("%s: lcd4linux was compiled without libusb support!", Name);
+ return -1;
+#endif
} else {
- int len = 5+strlen(port)+1;
- Port = malloc(len);
- qprintf(Port, len, "/dev/%s", port);
+ if (port[0] == '/') {
+ Port = strdup(port);
+ } else {
+ int len = 5 + strlen(port) + 1;
+ Port = malloc(len);
+ qprintf(Port, len, "/dev/%s", port);
+ }
+ debug ("using device %s ", Port);
}
-
- debug ("using device %s ", Port);
s=cfg_get(section, "Size", NULL);
if (s==NULL || *s=='\0') {
DROWS = rows;
DCOLS = cols;
- /* Init the command buffer */
- Buffer = (char*)malloc(1024);
- if (Buffer==NULL) {
- error ("%s: coommand buffer could not be allocated: malloc() failed", Name);
- return -1;
- }
-
- /* open port */
- usblcd_file=open(Port,O_WRONLY);
- if (usblcd_file==-1) {
- error ("%s: open(%s) failed: %s", Name, Port, strerror(errno));
- return -1;
- }
-
- /* get driver version */
- memset(buf,0,sizeof(buf));
- if (ioctl(usblcd_file, IOC_GET_DRV_VERSION, buf)!=0) {
- error ("USBLCD: ioctl() failed, could not get Driver Version!");
- return -1;
- }
- info("%s: Driver Version: %s", Name, buf);
+ if (use_libusb) {
+
+#ifdef HAVE_USB_H
+ if (drv_UL_open() < 0) {
+ return -1;
+ }
+#endif
+
+ } else {
+
+ /* open port */
+ usblcd_file=open(Port,O_WRONLY);
+ if (usblcd_file==-1) {
+ error ("%s: open(%s) failed: %s", Name, Port, strerror(errno));
+ return -1;
+ }
+
+ /* get driver version */
+ memset(buf, 0, sizeof(buf));
+ if (ioctl(usblcd_file, IOC_GET_DRV_VERSION, buf) != 0) {
+ error ("USBLCD: ioctl() failed, could not get Driver Version!");
+ return -1;
+ }
+ info("%s: Driver Version: %s", Name, buf);
- if (sscanf(buf,"USBLCD Driver Version %d.%d",&major,&minor)!=2) {
- error("%s: could not read Driver Version!", Name);
- return -1;
- }
- if (major!=1) {
- error("%d: Driver Version %d not supported!", Name, major);
- return -1;
- }
+ if (sscanf(buf,"USBLCD Driver Version %d.%d", &major, &minor) != 2) {
+ error("%s: could not read Driver Version!", Name);
+ return -1;
+ }
+ if (major != 1) {
+ error("%d: Driver Version %d not supported!", Name, major);
+ return -1;
+ }
- memset(buf,0,sizeof(buf));
- if (ioctl(usblcd_file, IOC_GET_HARD_VERSION, buf)!=0) {
- error ("%s: ioctl() failed, could not get Hardware Version!", Name);
- return -1;
- }
- info("%s: Hardware Version: %s", Name, buf);
+ memset(buf, 0, sizeof(buf));
+ if (ioctl(usblcd_file, IOC_GET_HARD_VERSION, buf) != 0) {
+ error ("%s: ioctl() failed, could not get Hardware Version!", Name);
+ return -1;
+ }
+ info("%s: Hardware Version: %s", Name, buf);
- if (sscanf(buf,"%d.%d",&major,&minor)!=2) {
- error("%s: could not read Hardware Version!", Name);
- return -1;
+ if (sscanf(buf, "%d.%d", &major, &minor) != 2) {
+ error("%s: could not read Hardware Version!", Name);
+ return -1;
+ }
+
+ if (major!=1) {
+ error("%s: Hardware Version %d not supported!", Name, major);
+ return -1;
+ }
}
- if (major!=1) {
- error("%s: Hardware Version %d not supported!", Name, major);
+ /* Init the command buffer */
+ Buffer = (char*)malloc(1024);
+ if (Buffer == NULL) {
+ error ("%s: coommand buffer could not be allocated: malloc() failed", Name);
return -1;
}
-
- /* reset coimmand buffer */
- BufPtr=Buffer;
-
+ BufPtr = Buffer;
+
/* initialize display */
drv_UL_command (0x29); /* 8 Bit mode, 1/16 duty cycle, 5x8 font */
drv_UL_command (0x08); /* Display off, cursor off, blink off */
drv_generic_text_greet ("goodbye!", NULL);
}
- debug ("closing port %s", Port);
- close(usblcd_file);
+ if (use_libusb) {
+#ifdef HAVE_USB_H
+ drv_UL_close();
+#endif
+ } else {
+ debug ("closing port %s", Port);
+ close(usblcd_file);
+ }
if (Buffer) {
free(Buffer);
projects / lcd4linux.git / commitdiff