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/** \file server/drivers/pylcd.c
* LCDd \c pyramid driver for the programmable LC displays
* from Pyramid Computer GmbH.
*
* For more information see
* http://www.pyramid.de/en/products/specialities.php
*/
/*-
* Copyright (C) 2005 Silvan Marco Fin <silvan@kernelconcepts.de>
* 2006 coresystems GmbH <info@coresystems.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/select.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <termios.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#include "shared/defines.h"
#include "lcd.h"
#include "pylcd.h"
#include "lcd_lib.h"
#include "shared/report.h"
#include "adv_bignum.h"
#define True 1
#define False 0
#define MICROTIMEOUT 50000 /* Timeout for select() */
#define NOKEY "00000"
/* variables for the server core */
MODULE_EXPORT char *api_version = API_VERSION;
MODULE_EXPORT int stay_in_foreground = 0;
MODULE_EXPORT int supports_multiple = 0;
MODULE_EXPORT char *symbol_prefix = "pyramid_";
/* Prototypes: */
static int data_ready(PrivateData *p);
static int read_tele(PrivateData *p, char *buffer);
static int real_send_tele(PrivateData *p, char *buffer, int len);
static int send_tele(PrivateData *p, char *buffer);
static int send_ACK(PrivateData *p);
static unsigned long long timestamp(void);
static int initTTY(Driver *drvthis, int FD);
/* local functions for pylcd.c */
/**
* Performs an select on the device used. Returns if no data is available at
* the moment. Used to keep reading-operations from blocking the driver.
*/
static int
data_ready(PrivateData *p)
{
FD_ZERO(&p->rdfs);
FD_SET(p->FD, &p->rdfs);
return select(p->FD + 1, &p->rdfs, NULL, NULL, &p->timeout) > 0;
}
/**
* Reads one telegramm, stores the telegramm without ETX/STX in buffer.
* \param p Pointer to driver's private data
* \param buffer Pointer to memory to store the telegram in. Must be at least
* MAXOUNT size!
* \return True (1) on successful detection of a telegram, False (0) if
* nothing was read or the telegramm didn't match its CC or if
* MAXCOUNT was exeeded without reading a complete telegramm.
*/
static int
read_tele(PrivateData *p, char *buffer)
{
char zeichen = 0;
int len = 0;
char cc = 0x00;
/* Try to find STX within first 10 chars */
while (data_ready(p)
&& (read(p->FD, &zeichen, 1) > 0)
&& (zeichen != 0x02)
&& (len < MAXCOUNT))
len++;
/* If no STX available, set buffer all zero and return */
if (zeichen != 0x02) {
memset(buffer, 0, MAXCOUNT);
return False;
}
/* Now start reading until ETX */
cc ^= zeichen;
len = 0;
while (data_ready(p)
&& (read(p->FD, &zeichen, 1) > 0)
&& (len < MAXCOUNT)) {
buffer[len] = zeichen;
cc ^= zeichen;
if (zeichen == 0x03)
break; /* break before len++! */
len++;
}
/*
* Read the next character. If the previous character was ETX and the
* read charcters is a valid checksum, replace the ETX with NUL and
* return the resulting string. Otherwise clear buffer (throw away all
* read data) and return.
*/
if (data_ready(p)
&& (read(p->FD, &zeichen, 1) > 0)
&& (buffer[len] == 0x03)
&& (zeichen == cc)) {
buffer[len] = 0x00;
return True;
}
else {
memset(buffer, 0, MAXCOUNT);
return False;
}
}
/**
* Send the input as telegramm.
*
* The telegram buffer just contains the raw telegram data:
* - It shall not contain STX and ETX marks.
* - It may contain bytes below 0x20, they are automatically escaped.
*
* \param p Pointer to driver's private data
* \param buffer Buffer containing the data to send
* \param len Number of bytes to send from buffer
* \return Always 0
*
* \note This function does not wait for any ACKs.
*/
static int
real_send_tele(PrivateData *p, char *buffer, int len)
{
char cc = 0x00;
int i, j;
char buffer2[255];
i = 0;
j = 0;
buffer2[j++] = 0x02; /* emit <STX> */
/*
* copy the whole telegram package and escape characters below 0x20. ie.
* 0x8 --> <ESC> 0x28.
*/
while (len-- && j < 253) {
if (buffer[i] >= 0x00 && buffer[i] < 0x20) {
buffer2[j++] = 0x1b;
buffer2[j++] = buffer[i++] + 0x20;
}
else {
buffer2[j++] = buffer[i++];
}
}
buffer2[j++] = 0x03; /* emit <ETX> */
len = j; /* new package length */
/* calculate <BCC> over all bytes */
for (i = 0; i < len; i++)
cc ^= buffer2[i];
buffer2[len++] = cc;
write(p->FD, buffer2, len);
/* Take a little nap. This works as a pacemaker */
usleep(50);
return 0;
}
/**
* Send the string given in buffer. The string must be NUL-terminated.
*
* \param p Pointer to driver's private data
* \param buffer Pointer to the string to send
* \return Always 0
*/
static int
send_tele(PrivateData *p, char *buffer)
{
return real_send_tele(p, buffer, strlen(buffer));
}
/**
* Sends an acknowledge to the display.
*/
static int
send_ACK(PrivateData *p)
{
return send_tele(p, "Q");
}
/**
* Returns the current time in microseconds since the Epoch.
*/
static unsigned long long
timestamp(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return (unsigned long long)tv.tv_sec * 1000000 + (unsigned long long)tv.tv_usec;
}
/**
* Sets the serial device, used for communication with the LCD, into raw mode.
* \param drvthis Pointer to driver
* \param FD File descriptor of serial device to configure.
* \return -1 on error, 0 otherwise
*/
static int
initTTY(Driver *drvthis, int FD)
{
struct termios tty_mode;
if (tcgetattr(FD, &tty_mode) == 0) {
cfmakeraw(&tty_mode);
#ifdef CBAUDEX /* CBAUDEX not defined in FreeBSD */
tty_mode.c_cflag |= CBAUDEX;
#endif
cfsetospeed(&tty_mode, B115200);
cfsetispeed(&tty_mode, 0);
tty_mode.c_cc[VMIN] = 1;
tty_mode.c_cc[VTIME] = 1;
if (tcsetattr(FD, TCSANOW, &tty_mode) != 0) {
report(RPT_ERR, "%s: setting TTY failed: %s", drvthis->name, strerror(errno));
return -1;
}
}
else {
report(RPT_ERR, "%s: reading TTY failed: %s", drvthis->name, strerror(errno));
return -1;
}
return 0;
}
/**
* Initialize the driver.
* \param drvthis Pointer to driver structure.
* \retval 0 Success.
* \retval <0 Error.
*/
MODULE_EXPORT int
pyramid_init(Driver *drvthis)
{
char buffer[MAXCOUNT];
int i;
PrivateData *p;
/* get memory for private data */
p = (PrivateData *) malloc(sizeof(PrivateData));
if ((p == NULL) || (drvthis->store_private_ptr(drvthis, p) < 0)) {
report(RPT_ERR, "%s: error allocating memory for modules private data", drvthis->name);
return -1;
}
/* initialize elements of private data */
p->width = WIDTH;
p->height = HEIGHT;
p->customchars = CUSTOMCHARS;
p->cellwidth = CELLWIDTH;
p->cellheight = CELLHEIGHT;
p->ccmode = standard;
memset(p->framebuffer, ' ', SCREEN_SIZE);
memset(p->backingstore, ' ', SCREEN_SIZE);
strcpy(p->last_key_pressed, NOKEY);
p->last_key_time = timestamp();
p->timeout.tv_sec = 0;
p->timeout.tv_usec = MICROTIMEOUT;
/*
* read config file, fill configuration dependent elements of private
* data
*/
/* Which serial device should be used? */
strncpy(p->device, drvthis->config_get_string(drvthis->name, "Device", 0, "/dev/lcd"), sizeof(p->device));
p->device[sizeof(p->device) - 1] = '\0';
report(RPT_INFO, "%s: using Device %s", drvthis->name, p->device);
/* Initialize connection to the LCD */
/* open and initialize serial device */
p->FD = open(p->device, O_RDWR);
if (p->FD == -1) {
report(RPT_ERR, "%s: open(%s) failed: %s", drvthis->name, p->device, strerror(errno));
return -1;
}
if (initTTY(drvthis, p->FD) != 0)
return -1;
/*
* Acknowledge all telegramms, the device may yet be sending.
* (Reset doesn't clear telegramms, darn protocol ... )
*/
tcflush(p->FD, TCIFLUSH); /* clear port buffer */
while (1) {
i = read_tele(p, buffer);
if (i == True)
send_ACK(p);
else
break;
usleep(600000);
}
/* Initialize the display hardware: reset, clear and set cursor shape */
send_tele(p, "R");
send_tele(p, "C0101");
send_tele(p, "D ");
send_tele(p, "C0101");
send_tele(p, "M3");
/* invalidate LED status to make output(0) work */
for (i = 0; i < 7; i++)
p->led[i] = -1;
/* hardware selftest + clear all LEDs */
pyramid_output(drvthis, 0); /* needed, otherwise L11 won't work */
for (i = 0; i < 7; i++) {
pyramid_output(drvthis, 1 << i);
usleep(10000);
}
for (i = 6; i >= 0; i--) {
pyramid_output(drvthis, 1 << i);
usleep(10000);
}
pyramid_output(drvthis, 0);
report(RPT_DEBUG, "%s: init() done", drvthis->name);
return 0;
}
/**
* Close the driver (do necessary clean-up).
* \param drvthis Pointer to driver structure.
*/
MODULE_EXPORT void
pyramid_close(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
if (p->FD) {
tcflush(p->FD, TCIFLUSH);
close(p->FD);
}
}
/**
* Return the display width in characters.
* \param drvthis Pointer to driver structure.
* \return Number of characters the display is wide.
*/
MODULE_EXPORT int
pyramid_width(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
return p->width;
}
/**
* Return the display height in characters.
* \param drvthis Pointer to driver structure.
* \return Number of characters the display is high.
*/
MODULE_EXPORT int
pyramid_height(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
return p->height;
}
/**
* Clear the screen.
* \param drvthis Pointer to driver structure.
*/
MODULE_EXPORT void
pyramid_clear(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
memset(p->framebuffer, ' ', SCREEN_SIZE);
p->ccmode = standard;
}
/**
* Flush data on screen to the display. Compares the current frame buffer
* contents with the stored backing store. Send complete screen content if
* they are different.
* \param drvthis Pointer to driver structure.
*/
MODULE_EXPORT void
pyramid_flush(Driver *drvthis)
{
static char mesg[33];
PrivateData *p = (PrivateData *) drvthis->private_data;
int i;
if (memcmp(p->framebuffer, p->backingstore, SCREEN_SIZE)) {
memcpy(p->backingstore, p->framebuffer, SCREEN_SIZE);
/* Prepare send buffer */
mesg[0] = 'D';
memcpy(mesg + 1, p->framebuffer, SCREEN_SIZE);
/*
* we got the japanese HD44780U, so convert the german umlauts and
* other stuff, assuming input is iso_8859-1.
*/
for (i = 1; i < 33; i++) {
switch ((unsigned char)mesg[i]) {
case 0xe4: /* */
mesg[i] = 0xe1;
break;
case 0xf6: /* */
mesg[i] = 0xef;
break;
case 0xfc: /* */
mesg[i] = 0xf5;
break;
case 0xdf: /* */
mesg[i] = 0xe2;
break;
case 0xb7: /* */
mesg[i] = 0xa5;
break;
case 0xb0: /* */
mesg[i] = 0xdf;
break;
}
}
/* We do not wait for the ACK here, these are read by get_key() */
send_tele(p, "C0101");
real_send_tele(p, mesg, 33);
/* Minimum execution time 40ms */
usleep(40000);
}
/* Set cursor */
sprintf(mesg, "C%02d%02d", p->C_x, p->C_y);
real_send_tele(p, mesg, 5);
sprintf(mesg, "M%d", p->C_state);
real_send_tele(p, mesg, 2);
}
/**
* Print a string on the screen at position (x,y).
* The upper-left corner is (1,1), the lower-right corner is (p->width, p->height).
* \param drvthis Pointer to driver structure.
* \param x Horizontal character position (column).
* \param y Vertical character position (row).
* \param string String that gets written.
*/
MODULE_EXPORT void
pyramid_string(Driver *drvthis, int x, int y, const char string[])
{
int offset;
int len;
PrivateData *p = (PrivateData *) drvthis->private_data;
x = min(p->width, x);
y = min(p->height, y);
offset = (x - 1) + p->width * (y - 1);
len = min(strlen(string), p->width * p->height - offset + 1);
memcpy(&p->framebuffer[offset], string, len);
}
/**
* Print a character on the screen at position (x,y).
* The upper-left corner is (1,1), the lower-right corner is (p->width, p->height).
* \param drvthis Pointer to driver structure.
* \param x Horizontal character position (column).
* \param y Vertical character position (row).
* \param c Character that gets written.
*/
MODULE_EXPORT void
pyramid_chr(Driver *drvthis, int x, int y, char c)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
x = min(p->width, x);
y = min(p->height, y);
p->framebuffer[(x - 1) + p->width * (y - 1)] = c;
}
/**
* Define a custom character and write it to the LCD.
* \param drvthis Pointer to driver structure.
* \param n Custom character to define [0 - (NUM_CCs-1)].
* \param dat Array of 8 (= cellheight) bytes, each representing a row in
* CGRAM starting from the top. The five rightmost bits in
* each byte represent the pixels in that row.
*/
MODULE_EXPORT void
pyramid_set_char(Driver *drvthis, int n, unsigned char *dat)
{
char tele[10] = "G@ABCDEFGH";
int row, pixels;
PrivateData *p = (PrivateData *) drvthis->private_data;
unsigned char mask = (1 << p->cellwidth) - 1;
if (n < 0 || n > 7) {
debug(RPT_WARNING, "only characters 0-7 can be changed");
return;
}
if (!dat) {
debug(RPT_WARNING, "no character data");
return;
}
if (memcmp(dat, p->cc_cache[n], CELLHEIGHT)) {
memcpy(p->cc_cache[n], dat, CELLHEIGHT);
/* which character? */
tele[1] = n + 0x40;
for (row = 0; row < p->cellheight; row++) {
pixels = dat[row] & mask;
/* pixel information is transferred with an offset of 40h */
pixels |= 0x40;
tele[row + 2] = pixels;
}
real_send_tele(p, tele, 10);
usleep(200); /* extra delay required for processing this */
}
}
/**
* Get total number of custom characters available.
* \param drvthis Pointer to driver structure.
* \return Number of custom characters.
*/
MODULE_EXPORT int
pyramid_get_free_chars(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
return (p->customchars);
}
/**
* Return the width of a character in pixels.
* \param drvthis Pointer to driver structure.
* \return Number of pixel columns a character cell is wide.
*/
MODULE_EXPORT int
pyramid_cellwidth(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
return (p->cellwidth);
}
/**
* Return the height of a character in pixels.
* \param drvthis Pointer to driver structure.
* \return Number of pixel lines a character cell is high.
*/
MODULE_EXPORT int
pyramid_cellheight(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
return (p->cellheight);
}
/**
* Defines some custom characters.
* These characters are enabled if the value 0x100 is sent to the \c output command.
* \param drvthis Pointer to driver structure.
*/
static void
pyramid_init_custom1(Driver *drvthis)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
static unsigned char a[] = {
b_______,
b_______,
b_______,
b___XXXX,
b___XXXX,
b___XXXX,
b___XXXX,
b___XXXX
};
static unsigned char b[] = {
b_______,
b_______,
b_______,
b__XXXXX,
b__XXXX_,
b__XXX__,
b__XX___,
b__X____,
};
static unsigned char c[] = {
b___XXXX,
b___XXXX,
b___XXXX,
b___XXXX,
b___XXXX,
b_______,
b_______,
b_______
};
static unsigned char d[] = {
b__X____,
b__XX___,
b__XXX__,
b__XXXX_,
b__XXXXX,
b_______,
b_______,
b_______
};
if (p->ccmode != custom) {
pyramid_set_char(drvthis, 1, a);
pyramid_set_char(drvthis, 2, b);
pyramid_set_char(drvthis, 3, c);
pyramid_set_char(drvthis, 4, d);
p->ccmode = custom;
}
}
/**
* Draw a vertical bar bottom-up.
* \param drvthis Pointer to driver structure.
* \param x Horizontal character position (column) of the starting point.
* \param y Vertical character position (row) of the starting point.
* \param len Number of characters that the bar is high at 100%
* \param promille Current height level of the bar in promille.
* \param options Options (currently unused).
*/
MODULE_EXPORT void
pyramid_vbar(Driver *drvthis, int x, int y, int len, int promille, int options)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
static unsigned char vBars[7][8] = {
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F},
{0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F, 0x1F},
{0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F},
{0x00, 0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F},
{0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F},
};
if (p->ccmode != vbar) {
int i;
if (p->ccmode != standard) {
report(RPT_WARNING, "%s: vbar: cannot combine two modes using user-defined characters",
drvthis->name);
return;
}
for (i = 0; i < 7; i++)
pyramid_set_char(drvthis, i + 1, vBars[i]);
p->ccmode = vbar;
}
lib_vbar_static(drvthis, x, y, len, promille, options, p->cellheight, 0);
}
/**
* Draw a horizontal bar to the right.
* \param drvthis Pointer to driver structure.
* \param x Horizontal character position (column) of the starting point.
* \param y Vertical character position (row) of the starting point.
* \param len Number of characters that the bar is long at 100%
* \param promille Current length level of the bar in promille.
* \param options Options (currently unused).
*/
MODULE_EXPORT void
pyramid_hbar(Driver *drvthis, int x, int y, int len, int promille, int options)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
static unsigned char hBars[4][8] = {
{0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10},
{0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18},
{0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C},
{0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E},
};
if (p->ccmode != hbar) {
int i;
if (p->ccmode != standard) {
report(RPT_WARNING, "%s: hbar: cannot combine two modes using user-defined characters",
drvthis->name);
return;
}
for (i = 0; i < 4; i++)
pyramid_set_char(drvthis, i + 1, hBars[i]);
p->ccmode = hbar;
}
lib_hbar_static(drvthis, x, y, len, promille, options, p->cellwidth, 0);
}
/**
* Place an icon on the screen.
* \param drvthis Pointer to driver structure.
* \param x Horizontal character position (column).
* \param y Vertical character position (row).
* \param icon synbolic value representing the icon.
* \retval 0 Icon has been successfully defined/written.
* \retval <0 Server core shall define/write the icon.
*/
MODULE_EXPORT int
pyramid_icon(Driver *drvthis, int x, int y, int icon)
{
static unsigned char heart_open[] = {
b__XXXXX,
b__X_X_X,
b_______,
b_______,
b_______,
b__X___X,
b__XX_XX,
b__XXXXX
};
static unsigned char heart_filled[] = {
b__XXXXX,
b__X_X_X,
b___X_X_,
b___XXX_,
b___XXX_,
b__X_X_X,
b__XX_XX,
b__XXXXX
};
static unsigned char arrow_up[] = {
b____X__,
b___XXX_,
b__X_X_X,
b____X__,
b____X__,
b____X__,
b____X__,
b_______
};
static unsigned char arrow_down[] = {
b____X__,
b____X__,
b____X__,
b____X__,
b__X_X_X,
b___XXX_,
b____X__,
b_______
};
static unsigned char checkbox_off[] = {
b_______,
b_______,
b__XXXXX,
b__X___X,
b__X___X,
b__X___X,
b__XXXXX,
b_______
};
static unsigned char checkbox_on[] = {
b____X__,
b____X__,
b__XXX_X,
b__X_XX_,
b__X_X_X,
b__X___X,
b__XXXXX,
b_______
};
static unsigned char checkbox_gray[] = {
b_______,
b_______,
b__XXXXX,
b__X_X_X,
b__XX_XX,
b__X_X_X,
b__XXXXX,
b_______
};
static unsigned char ellipsis[] = {
b_______,
b_______,
b_______,
b_______,
b_______,
b_______,
b__X_X_X,
b_______
};
switch (icon) {
case ICON_BLOCK_FILLED:
pyramid_chr(drvthis, x, y, 255);
break;
case ICON_HEART_OPEN:
pyramid_set_char(drvthis, 0, heart_open);
pyramid_chr(drvthis, x, y, 0);
break;
case ICON_HEART_FILLED:
pyramid_set_char(drvthis, 0, heart_filled);
pyramid_chr(drvthis, x, y, 0);
break;
case ICON_ARROW_UP:
pyramid_set_char(drvthis, 2, arrow_up);
pyramid_chr(drvthis, x, y, 2);
break;
case ICON_ARROW_DOWN:
pyramid_set_char(drvthis, 3, arrow_down);
pyramid_chr(drvthis, x, y, 3);
break;
case ICON_ARROW_LEFT:
pyramid_chr(drvthis, x, y, 127);
break;
case ICON_ARROW_RIGHT:
pyramid_chr(drvthis, x, y, 126);
break;
case ICON_CHECKBOX_OFF:
pyramid_set_char(drvthis, 4, checkbox_off);
pyramid_chr(drvthis, x, y, 4);
break;
case ICON_CHECKBOX_ON:
pyramid_set_char(drvthis, 5, checkbox_on);
pyramid_chr(drvthis, x, y, 5);
break;
case ICON_CHECKBOX_GRAY:
pyramid_set_char(drvthis, 6, checkbox_gray);
pyramid_chr(drvthis, x, y, 6);
break;
case ICON_ELLIPSIS:
pyramid_set_char(drvthis, 7, ellipsis);
pyramid_chr(drvthis, x, y, 7);
break;
default:
debug(RPT_DEBUG, "%s: x=%d, y=%d, icon=%x", __FUNCTION__, x, y, icon);
return -1;
}
return 0;
}
/**
* API: Draw a big number (0-9 and colon) on the screen.
*/
MODULE_EXPORT void
pyramid_num(Driver *drvthis, int x, int num)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
int do_init = 0;
if ((num < 0) || (num > 10))
return;
if (p->ccmode != bignum) {
if (p->ccmode != standard) {
report(RPT_WARNING, "%s: num: cannot combine two modes using user-defined characters",
drvthis->name);
return;
}
p->ccmode = bignum;
do_init = 1;
}
lib_adv_bignum(drvthis, x, num, 0, do_init);
};
/**
* Set cursor position and state. Cursor position and state is not immediately
* set, but stored in PrivateData and set on flush.
*
* \param drvthis Pointer to driver structure.
* \param x Horizontal cursor position (column).
* \param y Vertical cursor position (row).
* \param state New cursor state.
*/
MODULE_EXPORT void
pyramid_cursor(Driver *drvthis, int x, int y, int state)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
p->C_x = x;
p->C_y = y;
switch (state) {
case CURSOR_OFF:
state = 0;
break;
case CURSOR_DEFAULT_ON:
state = 3;
break;
case CURSOR_UNDER:
state = 1;
break;
case CURSOR_BLOCK:
state = 2;
break;
default:
report(RPT_WARNING, "%s: Unknown cursor state %d", drvthis->name, state);
state = 0;
}
p->C_state = state;
}
/**
* Set output port.
* Setting an output port bit lights the associated LED;
* re-setting the bit turns the LED off.
* \param drvthis Pointer to driver structure.
* \param state Integer with bits representing port states.
*/
MODULE_EXPORT void
pyramid_output(Driver *drvthis, int state)
{
PrivateData *p = (PrivateData *) drvthis->private_data;
int i;
char tele[] = {"L00"};
for (i = 0; i < 7; i++) {
if (p->led[i] != (state & (1 << i))) {
p->led[i] = state & (1 << i);
tele[1] = i + '1';
tele[2] = p->led[i] ? '1' : '0';
send_tele(p, tele);
}
}
if (state & (1 << 8)) {
pyramid_init_custom1(drvthis);
}
}
/**
* Get key from the device
* \param drvthis Pointer to driver structure.
* \return String representation of the key.
* \c NULL if nothing available / unmapped key.
*/
MODULE_EXPORT const char *
pyramid_get_key(Driver *drvthis)
{
/* supports only one key at a time */
static char buffer[MAXCOUNT]; /* has to be static to be visible
* outside this function */
unsigned long long current_time;
int retval;
PrivateData *p = (PrivateData *) drvthis->private_data;
/*
* Now we read everything from the display, and as long as we got ACKs,
* we ignore them. (eat up all pending ACKs)
*/
while (1) {
retval = read_tele(p, buffer);
if ((retval == False) || (buffer[0] != 'Q'))
break;
}
if (retval == False)
strcpy(buffer, p->last_key_pressed);
else
send_ACK(p);
/* If a key wasn't released yet it may be released now. */
if (buffer[0] == 'K') {
/* test if its a release event */
if ((strcmp(buffer, "K0003") == 0)
|| (strcmp(buffer, "K0030") == 0)
|| (strcmp(buffer, "K0300") == 0)
|| (strcmp(buffer, "K3000") == 0)) {
debug(RPT_DEBUG, "%s: Key released: %s", __FUNCTION__, p->last_key_pressed);
strcpy(p->last_key_pressed, NOKEY);
return NULL;
}
else { /* It must be a new key event */
strcpy(p->last_key_pressed, buffer);
debug(RPT_DEBUG, "%s: Key pressed: %s", __FUNCTION__, p->last_key_pressed);
}
}
/* If no keys are pressed at this time, we are done. */
if (p->last_key_pressed[0] == NOKEY[0])
return NULL;
current_time = timestamp();
if (current_time > p->last_key_time + 500000) /* New keys only every
* 0.5 seconds */
p->last_key_time = current_time;
else
return NULL;
if (strcmp(p->last_key_pressed, "K0001") == 0) /* first from left */
return "Up";
if (strcmp(p->last_key_pressed, "K0010") == 0) /* second from left */
return "Down";
if (strcmp(p->last_key_pressed, "K0100") == 0) /* third from left */
return "Enter";
if (strcmp(p->last_key_pressed, "K1000") == 0) /* last from left */
return "Escape";
#ifdef PYRAMID_DECODE_COMBINED_KEYPRESSES
/* Do we really want to type that much */
if (strcmp(p->last_key_pressed, "K0012") == 0) /* A+B */
return "Up+Down";
if (strcmp(p->last_key_pressed, "K0021") == 0) /* B+A */
return "Down+Up";
if (strcmp(p->last_key_pressed, "K0102") == 0) /* A+C */
return "Up+Enter";
if (strcmp(p->last_key_pressed, "K0201") == 0) /* C+A */
return "Enter+Up";
if (strcmp(p->last_key_pressed, "K1002") == 0) /* A+D */
return "Up+Escape";
if (strcmp(p->last_key_pressed, "K2001") == 0) /* D+A */
return "Escape+Up";
if (strcmp(p->last_key_pressed, "K0120") == 0) /* B+C */
return "Down+Enter";
if (strcmp(p->last_key_pressed, "K0210") == 0) /* C+B */
return "Enter+Down";
if (strcmp(p->last_key_pressed, "K1020") == 0) /* B+D */
return "Down+Escape";
if (strcmp(p->last_key_pressed, "K2010") == 0) /* D+B */
return "Escape+Down";
if (strcmp(p->last_key_pressed, "K0012") == 0) /* C+D */
return "Enter+Escape";
if (strcmp(p->last_key_pressed, "K0021") == 0) /* D+C */
return "Escape+Enter";
#endif
return NULL; /* Ignore combined key events */
}
/**
* Provide some information about this driver.
* \param drvthis Pointer to driver structure.
* \return Constant string with information.
*/
MODULE_EXPORT const char *
pyramid_get_info(Driver *drvthis)
{
static char *pyramid_info_string = "Pyramid LCD driver";
return pyramid_info_string;
}
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