mangavalk/lcdproc
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More formatting changes, new tags file.

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This commit is contained in:
William Ferrell
2000-04-03 22:13:57 +00:00
parent 0d703c5864
commit 6a115b4446
64 changed files with 8950 additions and 8950 deletions
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server/drivers/hd44780-serialLpt.c
+69 -69
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@@ -50,110 +50,110 @@ static char lastkey = 0;
int
hd_init_serialLpt (HD44780_functions * hd44780_functions, lcd_logical_driver * driver, char *args, unsigned int port)
{
int displayID = EN1 | EN2;
int displayID = EN1 | EN2;
lp = port;
lp = port;
hd44780_functions->senddata = lcdserLpt_HD44780_senddata;
hd44780_functions->senddata = lcdserLpt_HD44780_senddata;
// TODO: enable keypad only if specified on command line
driver->getkey = lcdserLpt_HD44780_getkey;
// TODO: enable keypad only if specified on command line
driver->getkey = lcdserLpt_HD44780_getkey;
// setup the lcd in 4 bit mode
shiftreg (displayID, 3);
hd44780_functions->uPause (4100);
// setup the lcd in 4 bit mode
shiftreg (displayID, 3);
hd44780_functions->uPause (4100);
shiftreg (displayID, 3);
hd44780_functions->uPause (100);
shiftreg (displayID, 3);
hd44780_functions->uPause (100);
shiftreg (displayID, 3);
hd44780_functions->uPause (40);
shiftreg (displayID, 3);
hd44780_functions->uPause (40);
shiftreg (displayID, 2);
hd44780_functions->uPause (40);
shiftreg (displayID, 2);
hd44780_functions->uPause (40);
// set display type functions
lcdserLpt_HD44780_senddata (0, RS_INSTR, FUNCSET | IF_4BIT | TWOLINE | SMALLCHAR);
// clear
lcdserLpt_HD44780_senddata (0, RS_INSTR, CLEAR);
hd44780_functions->uPause (1600);
// Now turn on the display
lcdserLpt_HD44780_senddata (displayID, RS_INSTR, ONOFFCTRL | DISPON | CURSOROFF | CURSORNOBLINK);
hd44780_functions->uPause (1600);
// set display type functions
lcdserLpt_HD44780_senddata (0, RS_INSTR, FUNCSET | IF_4BIT | TWOLINE | SMALLCHAR);
// clear
lcdserLpt_HD44780_senddata (0, RS_INSTR, CLEAR);
hd44780_functions->uPause (1600);
// Now turn on the display
lcdserLpt_HD44780_senddata (displayID, RS_INSTR, ONOFFCTRL | DISPON | CURSOROFF | CURSORNOBLINK);
hd44780_functions->uPause (1600);
return 0;
return 0;
}
void
lcdserLpt_HD44780_senddata (unsigned char displayID, unsigned char flags, unsigned char ch)
{
unsigned char dispID = 0, portControl = 0, h = ch >> 4, l = ch & 15;
unsigned char dispID = 0, portControl = 0, h = ch >> 4, l = ch & 15;
if (displayID == 1)
dispID |= EN1;
else if (displayID == 2)
dispID |= EN2;
else
dispID |= EN1 | EN2;
if (displayID == 1)
dispID |= EN1;
else if (displayID == 2)
dispID |= EN2;
else
dispID |= EN1 | EN2;
if (flags == RS_DATA)
portControl = RS;
else
portControl = 0;
if (flags == RS_DATA)
portControl = RS;
else
portControl = 0;
shiftreg (displayID, flags | portControl | h);
shiftreg (displayID, flags | portControl | l);
shiftreg (displayID, flags | portControl | h);
shiftreg (displayID, flags | portControl | l);
/* TODO: instead of delay read keys here */
/* TODO: instead of delay read keys here */
}
char
lcdserLpt_HD44780_getkey ()
{
// TODO: a keypad scan that does not use shift register
// define a key table
char keytr[] = "ABCDEFGH";
int n;
// TODO: a keypad scan that does not use shift register
// define a key table
char keytr[] = "ABCDEFGH";
int n;
rawshift (0); //send all line on shift register low
hd44780_functions->uPause (1);
if ((port_in (lp + 1) & 32) == 0) //test if line back is low - if not return(0)
{ //else
//start walking a single zero across the eight lines
for (n = 7; n >= 0; n--) {
rawshift (255 - (1 << n));
hd44780_functions->uPause (1);
rawshift (0); //send all line on shift register low
hd44780_functions->uPause (1);
if ((port_in (lp + 1) & 32) == 0) //test if line back is low - if not return(0)
{ //else
//start walking a single zero across the eight lines
for (n = 7; n >= 0; n--) {
rawshift (255 - (1 << n));
hd44780_functions->uPause (1);
if ((port_in (lp + 1) & 32) == 0) // check if line back is low if yes debounce
{
if (lastkey == keytr[n])
return (0);
// printf("key is %c %d\n",keytr[n],n);
lastkey = keytr[n];
return (keytr[n]); //return correct key code.
}
}
} //else fall out and return(0) [too transient a keypress]
lastkey = 0;
return (0);
if ((port_in (lp + 1) & 32) == 0) // check if line back is low if yes debounce
{
if (lastkey == keytr[n])
return (0);
// printf("key is %c %d\n",keytr[n],n);
lastkey = keytr[n];
return (keytr[n]); //return correct key code.
}
}
} //else fall out and return(0) [too transient a keypress]
lastkey = 0;
return (0);
}
/* this function sends r out onto the shift register */
void
rawshift (unsigned char r)
{
int i;
for (i = 7; i >= 0; i--) { /* MSB first */
port_out (lp, ((r >> i) & 1) * LCDDATA); /*set up data */
port_out (lp, (((r >> i) & 1) * LCDDATA) | LCDCLOCK); /*rising edge of clock */
}
int i;
for (i = 7; i >= 0; i--) { /* MSB first */
port_out (lp, ((r >> i) & 1) * LCDDATA); /*set up data */
port_out (lp, (((r >> i) & 1) * LCDDATA) | LCDCLOCK); /*rising edge of clock */
}
}
// displayID = value on parallel port to toggle the correct display
void
shiftreg (unsigned char displayID, unsigned char r)
{
rawshift (r);
port_out (lp, displayID); //latch it, to correct display
port_out (lp, 0);
rawshift (r);
port_out (lp, displayID); //latch it, to correct display
port_out (lp, 0);
}