hd44780: Added 'usb4all' connection type for USB-4-all devices (T. Mohaupt)

2012-02-18 15:24:43 +00:00
parent a2083da28f
commit 4ea3f1cf98
10 changed files with 790 additions and 10 deletions
@@ -0,0 +1,46 @@
+/** \file server/drivers/hd44780-usb4all.h
+ * USB-4-all connection type of hd44780 driver for Hitachi HD44780 based
+ * LCD displays connected to an USB-4-all controller.
+ */
+
+/*-
+ * Copyright (C) 2012 Thomas Mohaupt <thomas.mohaupt@gmail.com>
+ *               2010 Roland Wundrig <http://wundrig.de/>
+ *
+ * Some code parts are adapted from Roland Wundrig linux demo code
+ * (part of usb4all package)
+ *
+ * This file is released under the GNU General Public License version 2.
+ * Refer to the COPYING file distributed with this package.
+ */
+
+#ifndef HD_USB4ALL_H
+#define HD_USB4ALL_H
+
+#include "lcd.h"		/* for Driver */
+
+/* vendor and product id */
+#define USB4ALL_VENDORID   0x004D8
+#define USB4ALL_PRODUCTID  0x0FF0B
+
+/* USB read/write timeouts */
+#define TIMEOUT_READ   1000
+#define TIMEOUT_WRITE  1000
+
+/* USB transfer modes */
+#define MODE_INT   0x04		/* usb interface : interrup mode */
+#define MODE_BULK  0x08		/* usb interface : bulk mode */
+
+#define USB4ALL_TX_MAX  64	/* usb4all tx buffer size */
+#define USB4ALL_RX_MAX  16	/* usb4all rx buffer size */
+
+/* assignment of PWM channels */
+#define USB4ALL_PWM_CONTRAST    0x01	/* PWM channel used for contrast */
+#define USB4ALL_PWM_BRIGHTNESS  0x02	/* PWM channel used for brightness */
+
+#define USB4ALL_RESET   0xFF
+
+/* initialise this particular driver */
+int hd_init_usb4all(Driver *drvthis);
+
+#endif