I'm going to include this nice patch for the DS2408 LCD display.
I am a little concerned that the Honoff is a little confusing.
Any comments,
Paul Alfille
---------- Forwarded message ----------
From: Maxime Soulé <[EMAIL PROTECTED]>
Date: Tue, Sep 9, 2008 at 5:44 PM
Subject: owfs-2.7p4 and Hobbyboards LCD/DS2408 patch
To: [EMAIL PROTECTED]
Hello,
I just discovered owfs and I find it very useful! You did a great job,
congratulation!
As I own a hobbyboard LCD driver board, I added two nodes to the DS2408
source file.
The first is "LCD_H/screenyx". It is like "LCD_H/screen" one but the two
first characters of the passed string allow to position the cursor:
"\x02\x04string" perl string write "string" at line 2 (option base 1) column
4 (option base 1).
Last one is "LCD_H/onoff": an ored integer to switch display (0x04), cursor
(0x02) and blinking cursor (0x01) on/off.
Hope this patch will help you...
Best regards,
Max.
--- owfs-2.7p4/module/owlib/src/c/ow_2408.c.orig 2008-09-09
22:02:57.000000000 +0200
+++ owfs-2.7p4/module/owlib/src/c/ow_2408.c 2008-09-09
23:24:19.000000000 +0200
@@ -83,7 +83,9 @@
WRITE_FUNCTION(FS_Hclear);
WRITE_FUNCTION(FS_Hhome);
WRITE_FUNCTION(FS_Hscreen);
+WRITE_FUNCTION(FS_Hscreenyx);
WRITE_FUNCTION(FS_Hmessage);
+WRITE_FUNCTION(FS_Honoff);
/* ------- Structures ----------- */
@@ -106,7 +108,9 @@
{"LCD_H/clear", PROPERTY_LENGTH_YESNO, NULL, ft_yesno, fc_stable,
NO_READ_FUNCTION, FS_Hclear, {v:NULL},},
{"LCD_H/home", PROPERTY_LENGTH_YESNO, NULL, ft_yesno, fc_stable,
NO_READ_FUNCTION, FS_Hhome, {v:NULL},},
{"LCD_H/screen", 128, NULL, ft_ascii, fc_stable, NO_READ_FUNCTION,
FS_Hscreen, {v:NULL},},
+ {"LCD_H/screenyx", 128, NULL, ft_ascii, fc_stable, NO_READ_FUNCTION,
FS_Hscreenyx, {v:NULL},},
{"LCD_H/message", 128, NULL, ft_ascii, fc_stable, NO_READ_FUNCTION,
FS_Hmessage, {v:NULL},},
+ {"LCD_H/onoff", PROPERTY_LENGTH_UNSIGNED, NULL, ft_unsigned, fc_stable,
NO_READ_FUNCTION, FS_Honoff, {v:NULL},}
};
DeviceEntryExtended(29, DS2408, DEV_alarm | DEV_resume | DEV_ovdr);
@@ -399,6 +403,54 @@
return OW_w_pios(data, j, PN(owq)) ? -EINVAL : 0;
}
+static int FS_Hscreenyx(struct one_wire_query *owq)
+{
+ char *buf = OWQ_buffer(owq);
+ size_t size = OWQ_size(owq);
+ BYTE data[2 * size + 2];
+ size_t i, j = 0;
+ u_char ua_tmp;
+
+ if (size < 2)
+ return -EINVAL;
+
+ if ((unsigned char)buf[1] > 20 || (unsigned char)buf[0] > 4)
+ return -EINVAL;
+
+ switch (buf[0])
+ {
+ default:
+ ua_tmp = 0x80;
+ break;
+ case 2:
+ ua_tmp = 0x80 | 0x40;
+ break;
+ case 3:
+ ua_tmp = 0x80 + 20;
+ break;
+ case 4:
+ ua_tmp = (0x80 | 0x40) + 20;
+ break;
+ }
+
+ ua_tmp += buf[1] - 1;
+
+ data[0] = (ua_tmp & 0xF0);
+ data[1] = (ua_tmp << 4) & 0xF0;
+
+ //printf("Hscreen test<%*s>\n",(int)size,buf) ;
+ for (i = 2, j = 2; i < size; ++i) {
+ if (buf[i]) {
+ data[j++] = (buf[i] & 0xF0) | 0x08;
+ data[j++] = ((buf[i] << 4) & 0xF0) | 0x08;
+ } else { //null byte becomes
space
+ data[j++] = 0x28;
+ data[j++] = 0x08;
+ }
+ }
+ return OW_w_pios(data, j, PN(owq)) ? -EINVAL : 0;
+}
+
static int FS_Hmessage(struct one_wire_query *owq)
{
if (FS_Hclear(owq) || FS_Hhome(owq)
@@ -407,6 +459,21 @@
return 0;
}
+// 0x01 => blinking cursor on
+// 0x02 => cursor on
+// 0x04 => display on
+static int FS_Honoff(struct one_wire_query *owq)
+{
+ BYTE onoff[] = { 0x00, 0x00 };
+
+ onoff[1] = ((0x08 | OWQ_U(owq)) << 4) & 0xF0;
+
+ // onoff
+ if (OW_w_pios(onoff, 2, PN(owq)))
+ return -EINVAL;
+ return 0;
+}
+
/* Read 6 bytes --
0x88 PIO logic State
0x89 PIO output Latch state
--- owfs-2.7p4/module/owlib/src/c/ow_2408.c.orig 2008-09-09
22:02:57.000000000 +0200
+++ owfs-2.7p4/module/owlib/src/c/ow_2408.c 2008-09-09 23:24:19.000000000
+0200
@@ -83,7 +83,9 @@
WRITE_FUNCTION(FS_Hclear);
WRITE_FUNCTION(FS_Hhome);
WRITE_FUNCTION(FS_Hscreen);
+WRITE_FUNCTION(FS_Hscreenyx);
WRITE_FUNCTION(FS_Hmessage);
+WRITE_FUNCTION(FS_Honoff);
/* ------- Structures ----------- */
@@ -106,7 +108,9 @@
{"LCD_H/clear", PROPERTY_LENGTH_YESNO, NULL, ft_yesno, fc_stable,
NO_READ_FUNCTION, FS_Hclear, {v:NULL},},
{"LCD_H/home", PROPERTY_LENGTH_YESNO, NULL, ft_yesno, fc_stable,
NO_READ_FUNCTION, FS_Hhome, {v:NULL},},
{"LCD_H/screen", 128, NULL, ft_ascii, fc_stable, NO_READ_FUNCTION,
FS_Hscreen, {v:NULL},},
+ {"LCD_H/screenyx", 128, NULL, ft_ascii, fc_stable, NO_READ_FUNCTION,
FS_Hscreenyx, {v:NULL},},
{"LCD_H/message", 128, NULL, ft_ascii, fc_stable, NO_READ_FUNCTION,
FS_Hmessage, {v:NULL},},
+ {"LCD_H/onoff", PROPERTY_LENGTH_UNSIGNED, NULL, ft_unsigned, fc_stable,
NO_READ_FUNCTION, FS_Honoff, {v:NULL},}
};
DeviceEntryExtended(29, DS2408, DEV_alarm | DEV_resume | DEV_ovdr);
@@ -399,6 +403,54 @@
return OW_w_pios(data, j, PN(owq)) ? -EINVAL : 0;
}
+static int FS_Hscreenyx(struct one_wire_query *owq)
+{
+ char *buf = OWQ_buffer(owq);
+ size_t size = OWQ_size(owq);
+ BYTE data[2 * size + 2];
+ size_t i, j = 0;
+ u_char ua_tmp;
+
+ if (size < 2)
+ return -EINVAL;
+
+ if ((unsigned char)buf[1] > 20 || (unsigned char)buf[0] > 4)
+ return -EINVAL;
+
+ switch (buf[0])
+ {
+ default:
+ ua_tmp = 0x80;
+ break;
+ case 2:
+ ua_tmp = 0x80 | 0x40;
+ break;
+ case 3:
+ ua_tmp = 0x80 + 20;
+ break;
+ case 4:
+ ua_tmp = (0x80 | 0x40) + 20;
+ break;
+ }
+
+ ua_tmp += buf[1] - 1;
+
+ data[0] = (ua_tmp & 0xF0);
+ data[1] = (ua_tmp << 4) & 0xF0;
+
+ //printf("Hscreen test<%*s>\n",(int)size,buf) ;
+ for (i = 2, j = 2; i < size; ++i) {
+ if (buf[i]) {
+ data[j++] = (buf[i] & 0xF0) | 0x08;
+ data[j++] = ((buf[i] << 4) & 0xF0) | 0x08;
+ } else { //null byte becomes
space
+ data[j++] = 0x28;
+ data[j++] = 0x08;
+ }
+ }
+ return OW_w_pios(data, j, PN(owq)) ? -EINVAL : 0;
+}
+
static int FS_Hmessage(struct one_wire_query *owq)
{
if (FS_Hclear(owq) || FS_Hhome(owq)
@@ -407,6 +459,21 @@
return 0;
}
+// 0x01 => blinking cursor on
+// 0x02 => cursor on
+// 0x04 => display on
+static int FS_Honoff(struct one_wire_query *owq)
+{
+ BYTE onoff[] = { 0x00, 0x00 };
+
+ onoff[1] = ((0x08 | OWQ_U(owq)) << 4) & 0xF0;
+
+ // onoff
+ if (OW_w_pios(onoff, 2, PN(owq)))
+ return -EINVAL;
+ return 0;
+}
+
/* Read 6 bytes --
0x88 PIO logic State
0x89 PIO output Latch state
-------------------------------------------------------------------------
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