mangavalk/lcdproc
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Removed lcddriver.c (doesn't do anything, isn't in any makefiles, etc.).

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Passed *every* piece of source in this project through indent. I'm setting
things up with ctags soon and am actually going to *gasp* use a nice
programming environment to continue development in. :)
This commit is contained in:
William Ferrell
2000-03-30 20:20:41 +00:00
parent 2222adcfbe
commit f5a5e9653b
88 changed files with 8207 additions and 8723 deletions
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server/drivers/hd44780-serialLpt.c
+85 -96
View File
@@ -31,13 +31,11 @@
#include "port.h"
// Hardware specific functions
void lcdserLpt_HD44780_senddata(unsigned char displayID,
unsigned char flags,
unsigned char ch);
void lcdserLpt_HD44780_senddata (unsigned char displayID, unsigned char flags, unsigned char ch);
static char lcdserLpt_HD44780_getkey(void);
void rawshift(unsigned char r);
void shiftreg(unsigned char displayID, unsigned char r);
static char lcdserLpt_HD44780_getkey (void);
void rawshift (unsigned char r);
void shiftreg (unsigned char displayID, unsigned char r);
#define RS 16
#define LCDDATA 8
@@ -47,127 +45,118 @@ void shiftreg(unsigned char displayID, unsigned char r);
static unsigned int lp;
static char lastkey=0;
static char lastkey = 0;
// Initialisation
int hd_init_serialLpt(HD44780_functions *hd44780_functions,
lcd_logical_driver *driver,
char *args,
unsigned int port)
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)
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()
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);
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.
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);
} //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)
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);
void
shiftreg (unsigned char displayID, unsigned char r)
{
rawshift (r);
port_out (lp, displayID); //latch it, to correct display
port_out (lp, 0);
}