diff options
Diffstat (limited to 'glcddrivers/sed1520.c')
| -rw-r--r-- | glcddrivers/sed1520.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/glcddrivers/sed1520.c b/glcddrivers/sed1520.c new file mode 100644 index 0000000..67da56d --- /dev/null +++ b/glcddrivers/sed1520.c @@ -0,0 +1,402 @@ +/* + * GraphLCD driver library + * + * sed1520.c - SED1520 driver class + * + * This file is released under the GNU General Public License. Refer + * to the COPYING file distributed with this package. + * + * (c) 2003 Andreas 'randy' Weinberger <vdr AT smue.org> + */ + +#include <syslog.h> +#include <sys/time.h> + +#include "common.h" +#include "config.h" +#include "port.h" +#include "sed1520.h" + + +namespace GLCD +{ + +// commands +const unsigned char kSEAD = 0x00; // Set (X) Column Address +const unsigned char kSEPA = 0xb8; // Set (Y) Page Address +const unsigned char kSEDS = 0xc0; // Set Display Start Line +const unsigned char kDION = 0xaf; // Display on +const unsigned char kDIOF = 0xae; // Display off + +// control bits for DirectIO +#define CE1 0x01 +#define CE1HI 0x01 // Chip Enable 1 on +#define CE1LO 0x00 // Chip Enable 1 off + +const unsigned char kCS1HI = 0x00; // Chip Select 1 +const unsigned char kCS1LO = 0x01; +const unsigned char kCS2HI = 0x04; // Chip Select 2 +const unsigned char kCS2LO = 0x00; +const unsigned char kCDHI = 0x08; // Command/Data Register Select +const unsigned char kCDLO = 0x00; +const unsigned char kLEDHI = 0x02; // LED Backlight (not supported currently) +const unsigned char kLEDLO = 0x00; + + +cDriverSED1520::cDriverSED1520(cDriverConfig * config) +: config(config) +{ + oldConfig = new cDriverConfig(*config); + + port = new cParallelPort(); + + refreshCounter = 0; +} + +cDriverSED1520::~cDriverSED1520() +{ + delete port; + delete oldConfig; +} + +int cDriverSED1520::Init() +{ + int x; + int i; + struct timeval tv1, tv2; + + if (!(config->width % 8) == 0) { + width = config->width + (8 - (config->width % 8)); + } else { + width = config->width; + } + + if (!(config->height % 8) == 0) { + height = config->height + (8 - (config->height % 8)); + } else { + height = config->height; + } + + if (width <= 0) + width = 120; + if (height <= 0) + height = 32; + + SEAD = kSEAD; + SEPA = kSEPA; + SEDS = kSEDS; + DION = kDION; + DIOF = kDIOF; + LED = kLEDHI; + CDHI = kCDHI; + CDLO = kCDLO; + CS1HI = kCS1HI; + CS1LO = kCS1LO; + CS2HI = kCS2HI; + CS2LO = kCS2LO; + + for (unsigned int i = 0; i < config->options.size(); i++) + { + if (config->options[i].name == "") + { + } + } + + // setup linear lcd array + LCD = new unsigned char *[(width + 7) / 8]; + if (LCD) + { + for (x = 0; x < (width + 7) / 8; x++) + { + LCD[x] = new unsigned char[height]; + memset(LCD[x], 0, height); + } + } + // setup the lcd array for the paged sed1520 + LCD_page = new unsigned char *[width]; + if (LCD_page) + { + for (x = 0; x < width; x++) + { + LCD_page[x] = new unsigned char[(height + 7) / 8]; + memset(LCD_page[x], 0, (height + 7) / 8); + } + } + + 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_DEBUG, "%s: INFO: cannot change wait parameters (cDriver::Init)\n", config->name.c_str()); + useSleepInit = false; + } + else + { + useSleepInit = true; + } + + syslog(LOG_DEBUG, "%s: benchmark started.\n", config->name.c_str()); + gettimeofday(&tv1, 0); + for (i = 0; i < 1000; i++) + { + port->WriteData(i % 0x100); + } + gettimeofday(&tv2, 0); + if (useSleepInit) + nSleepDeInit(); + timeForPortCmdInNs = (tv2.tv_sec - tv1.tv_sec) * 1000000 + (tv2.tv_usec - tv1.tv_usec); + syslog(LOG_DEBUG, "%s: benchmark stopped. Time for Command: %ldns\n", config->name.c_str(), timeForPortCmdInNs); + + // initialize graphic mode + InitGraphic(); + + port->Release(); + + *oldConfig = *config; + + // clear display + Clear(); + + syslog(LOG_INFO, "%s: SED1520 initialized.\n", config->name.c_str()); + return 0; +} + +int cDriverSED1520::DeInit() +{ + int x; + + // free linear lcd array + if (LCD) + { + for (x = 0; x < (width + 7) / 8; x++) + { + delete[] LCD[x]; + } + delete[] LCD; + } + // free the lcd array for the paged sed1520 + if (LCD_page) + { + for (x = 0; x < width; x++) + { + delete[] LCD_page[x]; + } + delete[] LCD_page; + } + + if (port->Close() != 0) + return -1; + return 0; +} + +int cDriverSED1520::CheckSetup() +{ + if (config->device != oldConfig->device || + config->port != oldConfig->port || + config->width != oldConfig->width || + config->height != oldConfig->height) + { + DeInit(); + Init(); + return 0; + } + + if (config->upsideDown != oldConfig->upsideDown || + config->invert != oldConfig->invert) + { + oldConfig->upsideDown = config->upsideDown; + oldConfig->invert = config->invert; + return 1; + } + return 0; +} + +int cDriverSED1520::InitGraphic() +{ + // initialize controller1, set display start 0, set page 0, set y address 0, display on + SED1520Cmd(SEDS, 1); + SED1520Cmd(SEPA, 1); + SED1520Cmd(SEAD, 1); + SED1520Cmd(DION, 1); + + // initialize controller2, set display start 0, set page 0, set y address 0, display on + SED1520Cmd(SEDS, 2); + SED1520Cmd(SEPA, 2); + SED1520Cmd(SEAD, 2); + SED1520Cmd(DION, 2); + + return 0; +} + +void cDriverSED1520::SED1520Cmd(unsigned char data, int cmdcs) +{ + if (useSleepInit) + nSleepInit(); + + switch (cmdcs) + { + case 1: + port->WriteControl(CDHI | CS1LO | CS2LO | LEDHI); + nSleep(450 - timeForPortCmdInNs + 100 * config->adjustTiming); + port->WriteData(data); + nSleep(650 - timeForPortCmdInNs + 100 * config->adjustTiming); + port->WriteControl(CDHI | CS1HI | CS2LO | LEDHI); + nSleep(450 - timeForPortCmdInNs + 100 * config->adjustTiming); + break; + case 2: + port->WriteControl(CDHI | CS1LO | CS2LO | LED); + nSleep(450 - timeForPortCmdInNs + 100 * config->adjustTiming); + port->WriteData(data); + nSleep(650 - timeForPortCmdInNs + 100 * config->adjustTiming); + port->WriteControl(CDHI | CS1LO | CS2HI | LED); + nSleep(450 - timeForPortCmdInNs + 100 * config->adjustTiming); + break; + } + if (useSleepInit) + nSleepDeInit(); +} + +void cDriverSED1520::SED1520Data(unsigned char data, int datacs) +{ + if (useSleepInit) + nSleepInit(); + + switch (datacs) + { + case 1: + port->WriteControl(CDLO | CS1LO | CS2LO | LEDHI); + nSleep(450 - timeForPortCmdInNs + 100 * config->adjustTiming); + port->WriteData(data); + nSleep(650 - timeForPortCmdInNs + 100 * config->adjustTiming); + port->WriteControl(CDLO | CS1HI | CS2LO | LEDHI); + nSleep(450 - timeForPortCmdInNs + 100 * config->adjustTiming); + break; + case 2: + port->WriteControl(CDLO | CS1LO | CS2LO | LED); + nSleep(450 - timeForPortCmdInNs + 100 * config->adjustTiming); + port->WriteData(data); + nSleep(650 - timeForPortCmdInNs + 100 * config->adjustTiming); + port->WriteControl(CDLO | CS1LO | CS2HI | LED); + nSleep(450 - timeForPortCmdInNs + 100 * config->adjustTiming); + break; + } + if (useSleepInit) + nSleepDeInit(); +} + +void cDriverSED1520::Clear() +{ + for (int x = 0; x < (width + 7) / 8; x++) + memset(LCD[x], 0, height); +} + +void cDriverSED1520::Set8Pixels (int x, int y, unsigned char data) +{ + if (x >= width || y >= height) + return; + + if (!config->upsideDown) + { + // normal orientation + LCD[x / 8][y] = LCD[x / 8][y] | data; + } + else + { + // upside down orientation + x = width - 1 - x; + y = height - 1 - y; + LCD[x / 8][y] = LCD[x / 8][y] | ReverseBits(data); + } +} + +void cDriverSED1520::Refresh(bool refreshAll) +{ + int x,y,xx,yy; + unsigned char dByte, oneBlock[8]; + + if (CheckSetup() > 0) + refreshAll = true; + + if (config->refreshDisplay > 0) + { + refreshCounter = (refreshCounter + 1) % config->refreshDisplay; + if (!refreshAll && !refreshCounter) + refreshAll = true; + } + + refreshAll = true; // differential update is not yet supported + + if (refreshAll) + { + // draw all + + // convert the linear lcd array to the paged array for the display + for (y = 0; y < (height + 7) / 8; y++) + { + for (x = 0; x < (width + 7) / 8; x++) + { + for (yy = 0; yy < 8; yy++) + { + oneBlock[yy] = LCD[x][yy + (y * 8)] ^ (config->invert ? 0xff : 0x00); + } + for (xx = 0; xx < 8; xx++) + { + dByte = 0; + for (yy = 0; yy < 8; yy++) + { + if (oneBlock[yy] & bitmask[xx]) + { + dByte += (1 << yy); + } + } + LCD_page[x * 8 + xx][y] = dByte; + } + } + } + + port->Claim(); + + // send lcd_soll data to display, controller 1 + // set page and start address + for (y = 0; y < (height + 7) / 8; y++) + { + SED1520Cmd(SEAD, 1); + SED1520Cmd(SEPA + y, 1); + SED1520Data(0x00 ^ (config->invert ? 0xff : 0x00), 1); // fill first row with zero + + for (x = 0; x < width / 2 + 1; x++) + { + SED1520Data(LCD_page[x][y], 1); + } + + SED1520Cmd(SEAD, 2); + SED1520Cmd(SEPA + y, 2); + + for (x = width / 2; x < width; x++) + { + SED1520Data(LCD_page[x][y], 2); + } + + SED1520Data(0x00 ^ (config->invert ? 0xff : 0x00), 2); // fill last row with zero + } + port->Release(); + } + else + { + // draw only the changed bytes + } +} + +} // end of namespace |