/*
* GraphLCD driver library
*
* gu256x64-372.c - 8-bit driver module for Noritake GU256x64-372
* VFD displays. The VFD is operating in its 8-bit
* mode connected to a single PC parallel port.
*
* based on:
* gu256x32f driver module for graphlcd
* (c) 2003 Andreas Brachold <vdr04 AT deltab.de>
* HD61830 device
* (c) 2001-2003 by Carsten Siebholz <c.siebholz AT t-online.de>
* lcdproc 0.4 driver hd44780-ext8bit
* (c) 1999, 1995 Benjamin Tse <blt AT comports.com>
*
* This file is released under the GNU General Public License. Refer
* to the COPYING file distributed with this package.
*
* (c) 2004 Andreas 'randy' Weinberger (randy AT smue.org)
*/
#include <errno.h>
#include <syslog.h>
#include <unistd.h>
#include <sys/time.h>
#include <cstring>
#include "common.h"
#include "config.h"
#include "gu256x64-372.h"
#include "port.h"
namespace GLCD
{
#define SCREENSOFF 0x00 // both screens are off
#define SCREEN1ON 0x01 // only screen #1 is on (graphic screen)
#define SCREEN2ON 0x02 // only screen #2 is on (graphic/character screen)
#define SCREENSON 0x03 // both screens are on
#define CURS_AUTOINC 0x04 // cursor increments automatically
#define CURS_HOLD 0x05 // cursor holds
#define SCREEN2CHAR 0x06 // screen #2 sets to "character" display
#define SCREEN2GRAPH 0x07 // screen #2 sets to "graphic" display
#define DATA_WRITE 0x08 // data write mode
#define DATA_READ 0x09 // data read mode
#define DISP_LOSTA1 0x0A // lower addr. of display start of screen #1
#define DISP_HISTA1 0x0B // upper addr. of display start of screen #1
#define DISP_LOSTA2 0x0C // lower addr. of display start of screen #2
#define DISP_HISTA2 0x0D // upper addr. of display start of screen #2
#define CURS_LOADDR 0x0E // lower addr. of cursor of screen #1 & #2
#define CURS_HIADDR 0x0F // upper addr. of cursor start of screen #1 & #2
#define DISP_OR 0x10 // or display of screen #1 & #2
#define DISP_EXOR 0x11 // ex-or display of screen #1 & #2
#define DISP_AND 0x12 // and display of screen #1 & #2
#define BRIGHT_1 0x18 // luminance level 1 100.0%
#define BRIGHT_2 0x19 // luminance level 2 87.5%
#define BRIGHT_3 0x1A // luminance level 3 75.0%
#define BRIGHT_4 0x1B // luminance level 4 62.5%
static const std::string kWiringStandard = "Standard";
static const std::string kWiringWindows = "Windows";
const unsigned char kStandardWRHI = 0x04; // 16 / INIT
const unsigned char kStandardWRLO = 0x00; //
const unsigned char kStandardRDHI = 0x00; //
const unsigned char kStandardRDLO = 0x00; //
const unsigned char kStandardCDHI = 0x00; // 17 / nSELECT
const unsigned char kStandardCDLO = 0x08; //
const unsigned char kWindowsWRHI = 0x00; // 01 / nSTRB
const unsigned char kWindowsWRLO = 0x01; //
const unsigned char kWindowsRDHI = 0x00; // 14 / nLINEFEED
const unsigned char kWindowsRDLO = 0x02; //
const unsigned char kWindowsCDHI = 0x00; // 17 / nSELECT
const unsigned char kWindowsCDLO = 0x08; //
cDriverGU256X64_372::cDriverGU256X64_372(cDriverConfig * config)
: config(config)
{
oldConfig = new cDriverConfig(*config);
port = new cParallelPort();
m_nRefreshCounter = 0;
}
cDriverGU256X64_372::~cDriverGU256X64_372()
{
delete oldConfig;
delete port;
}
int cDriverGU256X64_372::Init()
{
int x;
struct timeval tv1, tv2;
width = config->width;
if (width <= 0)
width = 256;
height = config->height;
if (height <= 0)
height = 64;
m_iSizeYb = (height + 7) / 8;
// default values
WRHI = kStandardWRHI;
WRLO = kStandardWRLO;
RDHI = kStandardRDHI;
RDLO = kStandardRDLO;
CDHI = kStandardCDHI;
CDLO = kStandardCDLO;
for (unsigned int i = 0; i < config->options.size(); i++)
{
if (config->options[i].name == "Wiring")
{
if (config->options[i].value == kWiringStandard)
{
WRHI = kStandardWRHI;
WRLO = kStandardWRLO;
RDHI = kStandardRDHI;
RDLO = kStandardRDLO;
CDHI = kStandardCDHI;
CDLO = kStandardCDLO;
syslog(LOG_DEBUG, "%s: using standard wiring\n");
}
else if (config->options[i].value == kWiringWindows)
{
WRHI = kWindowsWRHI;
WRLO = kWindowsWRLO;
RDHI = kWindowsRDHI;
RDLO = kWindowsRDLO;
CDHI = kWindowsCDHI;
CDLO = kWindowsCDLO;
syslog(LOG_DEBUG, "%s: using windows wiring\n");
}
else
{
syslog(LOG_ERR, "%s error: wiring %s not supported, using default (Standard)!\n",
config->name.c_str(), config->options[i].value.c_str());
}
}
}
// setup linear lcd array
m_pDrawMem = new unsigned char *[width];
if (m_pDrawMem)
{
for (x = 0; x < width; x++)
{
m_pDrawMem[x] = new unsigned char[m_iSizeYb];
memset(m_pDrawMem[x], 0, m_iSizeYb);
}
}
Clear();
// setup the lcd array for the "vertical" mem
m_pVFDMem = new unsigned char *[width];
if (m_pVFDMem)
{
for (x = 0; x < width; x++)
{
m_pVFDMem[x] = new unsigned char[m_iSizeYb];
memset(m_pVFDMem[x], 0, m_iSizeYb);
}
}
ClearVFDMem();
if (config->device == "")
{
// use DirectIO
if (port->Open(config->port) != 0)
return -1;
uSleep(10);
}
else
{
// use ppdev
if (port->Open(config->device.c_str()) != 0)
return -1;
}
if (nSleepInit() != 0)
{
syslog(LOG_ERR, "%s: INFO: cannot change wait parameters Err: %s (cDriver::Init)\n", config->name.c_str(), strerror(errno));
m_bSleepIsInit = false;
}
else
{
m_bSleepIsInit = true;
}
syslog(LOG_DEBUG, "%s: benchmark started.\n", config->name.c_str());
gettimeofday(&tv1, 0);
for (x = 0; x < 10000; x++)
{
port->WriteData(x % 0x100);
}
gettimeofday(&tv2, 0);
nSleepDeInit();
m_nTimingAdjustCmd = ((tv2.tv_sec - tv1.tv_sec) * 10000 + (tv2.tv_usec - tv1.tv_usec)) / 1000;
syslog(LOG_DEBUG, "%s: benchmark stopped. Time for Port Command: %ldns\n", config->name.c_str(), m_nTimingAdjustCmd);
GU256X64Cmd(SCREEN1ON);
GU256X64Cmd(CURS_AUTOINC);
GU256X64Cmd(SCREEN2CHAR);
GU256X64Cmd(DISP_LOSTA1); GU256X64Data(0x00);
GU256X64Cmd(DISP_HISTA1); GU256X64Data(0x00);
GU256X64Cmd(DISP_LOSTA2); GU256X64Data(0x00);
GU256X64Cmd(DISP_HISTA2); GU256X64Data(0x10);
GU256X64Cmd(CURS_LOADDR); GU256X64Data(0x00);
GU256X64Cmd(CURS_HIADDR); GU256X64Data(0x00);
GU256X64Cmd(DISP_OR);
port->Release();
*oldConfig = *config;
// Set Display SetBrightness
SetBrightness(config->brightness);
// clear display
Clear();
ClearVFDMem();
syslog(LOG_INFO, "%s: gu256x64-372 initialized.\n", config->name.c_str());
return 0;
}
int cDriverGU256X64_372::DeInit()
{
int x;
if (m_pVFDMem)
for (x = 0; x < width; x++)
{
delete[] m_pVFDMem[x];
}
delete[] m_pVFDMem;
if (m_pDrawMem)
for (x = 0; x < width; x++)
{
delete[] m_pDrawMem[x];
}
delete[] m_pDrawMem;
if (port->Close() != 0)
return -1;
return 0;
}
int cDriverGU256X64_372::CheckSetup()
{
if (config->device != oldConfig->device ||
config->port != oldConfig->port ||
config->width != oldConfig->width ||
config->height != oldConfig->height)
{
DeInit();
Init();
return 0;
}
if (config->brightness != oldConfig->brightness)
{
oldConfig->brightness = config->brightness;
SetBrightness(config->brightness);
}
if (config->upsideDown != oldConfig->upsideDown ||
config->invert != oldConfig->invert)
{
oldConfig->upsideDown = config->upsideDown;
oldConfig->invert = config->invert;
return 1;
}
return 0;
}
void cDriverGU256X64_372::ClearVFDMem()
{
for (int x = 0; x < width; x++)
memset(m_pVFDMem[x], 0, m_iSizeYb);
}
void cDriverGU256X64_372::Clear()
{
for (int x = 0; x < width; x++)
memset(m_pDrawMem[x], 0, m_iSizeYb);
}
void cDriverGU256X64_372::SetBrightness(unsigned int percent)
{
port->Claim();
if (percent > 88) {
GU256X64Cmd(BRIGHT_1);
} else if (percent > 75) {
GU256X64Cmd(BRIGHT_2);
} else if (percent > 66) {
GU256X64Cmd(BRIGHT_3);
} else if (percent > 0 ) {
GU256X64Cmd(BRIGHT_4);
} else {
GU256X64Cmd(SCREENSOFF);
}
port->Release();
}
void cDriverGU256X64_372::GU256X64Cmd(unsigned char data)
{
if (m_bSleepIsInit)
nSleepInit();
port->WriteControl(CDHI | WRHI | RDLO);
port->WriteData(data);
nSleep(100 + (100 * config->adjustTiming) - m_nTimingAdjustCmd);
port->WriteControl(CDHI | WRLO | RDLO);
nSleep(100 + (100 * config->adjustTiming) - m_nTimingAdjustCmd);
port->WriteControl(CDHI | WRHI | RDLO);
nSleep(100 + (100 * config->adjustTiming) - m_nTimingAdjustCmd);
}
void cDriverGU256X64_372::GU256X64Data(unsigned char data)
{
if (m_bSleepIsInit)
nSleepInit();
port->WriteControl(CDLO | WRHI | RDLO);
port->WriteData(data);
nSleep(100 + (100 * config->adjustTiming) - m_nTimingAdjustCmd);
port->WriteControl(CDLO | WRLO | RDLO);
nSleep(100 + (100 * config->adjustTiming) - m_nTimingAdjustCmd);
port->WriteControl(CDLO | WRHI | RDLO);
nSleep(100 + (100 * config->adjustTiming) - m_nTimingAdjustCmd);
}
void cDriverGU256X64_372::SetPixel(int x, int y)
{
unsigned char c;
if (!m_pDrawMem)
return;
if (x >= width || x < 0)
return;
if (y >= height || y < 0)
return;
if (config->upsideDown)
{
x = width - 1 - x;
y = height - 1 - y;
}
c = 0x80 >> (y % 8);
m_pDrawMem[x][y/8] = m_pDrawMem[x][y/8] | c;
}
void cDriverGU256X64_372::Set8Pixels(int x, int y, unsigned char data)
{
int n;
// x - pos is'nt mayby align to 8
x &= 0xFFF8;
for (n = 0; n < 8; ++n)
{
if (data & (0x80 >> n)) // if bit is set
SetPixel(x + n, y);
}
}
void cDriverGU256X64_372::Refresh(bool refreshAll)
{
int xb, yb;
if (!m_pVFDMem || !m_pDrawMem)
return;
bool doRefresh = false;
int minX = width;
int maxX = 0;
int minYb = m_iSizeYb;
int maxYb = 0;
if (CheckSetup() > 0)
refreshAll = true;
for (xb = 0; xb < width; ++xb)
{
for (yb = 0; yb < m_iSizeYb; ++yb)
{
if (m_pVFDMem[xb][yb] != m_pDrawMem[xb][yb])
{
m_pVFDMem[xb][yb] = m_pDrawMem[xb][yb];
minX = std::min(minX, xb);
maxX = std::max(maxX, xb);
minYb = std::min(minYb, yb);
maxYb = std::max(maxYb, yb + 1);
doRefresh = true;
}
}
}
m_nRefreshCounter = (m_nRefreshCounter + 1) % config->refreshDisplay;
if (!refreshAll && !m_nRefreshCounter)
refreshAll = true;
if (refreshAll || doRefresh)
{
if (refreshAll) {
minX = 0;
maxX = width;
minYb = 0;
maxYb = m_iSizeYb;
// and reset RefreshCounter
m_nRefreshCounter = 0;
}
minX = std::max(minX, 0);
maxX = std::min(maxX, width - 1);
minYb = std::max(minYb, 0);
maxYb = std::min(maxYb, m_iSizeYb);
port->Claim();
GU256X64Cmd(CURS_LOADDR); GU256X64Data(0x00);
GU256X64Cmd(CURS_HIADDR); GU256X64Data(0x00);
GU256X64Cmd(DATA_WRITE);
for (xb = 0; xb < width; xb++)
{
for (yb = 0; yb < m_iSizeYb; yb++)
{
GU256X64Data((m_pVFDMem[xb][yb]) ^ (config->invert ? 0xff : 0x00));
}
}
port->Release();
}
}
} // end of namespace