mangavalk/lcdproc
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Added Stephen Davies output register extension code.

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This commit is contained in:
robijn
2002-06-03 21:34:24 +00:00
parent f13e87b912
commit 77e6977196
7 changed files with 83 additions and 13 deletions
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server/drivers/hd44780-ext8bit.c
+17 -2
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@@ -32,8 +32,8 @@
* D3 (5) Y3
* D4 (6) Y4
* D5 (7) Y5
* D6 (7) Y6
* D7 (7) Y7
* D6 (8) Y6
* D7 (9) Y7
* nSTRB (1) Y8
* nSEL (17) Y9
* nACK (10) X0
@@ -70,11 +70,13 @@
void lcdtime_HD44780_senddata (PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch);
void lcdtime_HD44780_backlight (PrivateData *p, unsigned char state);
unsigned char lcdtime_HD44780_readkeypad (PrivateData *p, unsigned int YData);
void lcdtime_HD44780_output(PrivateData *p, int data);
#define RS STRB
#define RW LF
#define EN1 INIT
#define BL SEL
#define LE SEL
static int semid;
@@ -110,6 +112,8 @@ hd_init_ext8bit (Driver *drvthis)
// Remember which input lines are stuck
p->stuckinputs = lcdtime_HD44780_readkeypad (p, 0);
}
// Writes new value to the "bargraph" latches
hd44780_functions->output = lcdtime_HD44780_output;
return 0;
}
@@ -176,3 +180,14 @@ unsigned char lcdtime_HD44780_readkeypad (PrivateData *p, unsigned int YData)
((readval & BUSY) / BUSY <<1) | /* pin 11 */
((readval & ACK) / ACK )) & ~p->stuckinputs; /* pin 10 */
}
void lcdtime_HD44780_output(PrivateData *p, int data)
{
// Setup data bus
port_out(p->port, data);
// Strobe the latch (374 latches on rising edge, 3/574 on trailing. No matter)
port_out (p->port + 2, (LE | p->backlight_bit) ^ OUTMASK);
if ( p->delayBus ) p->hd44780_functions->uPause (p, 1);
port_out (p->port + 2, (p->backlight_bit) ^ OUTMASK);
if ( p->delayBus ) p->hd44780_functions->uPause (p, 1);
}