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diff --git a/docs/DRIVER.gu126x64D-K610A4 b/docs/DRIVER.gu126x64D-K610A4 new file mode 100644 index 0000000..903e21d --- /dev/null +++ b/docs/DRIVER.gu126x64D-K610A4 @@ -0,0 +1,111 @@ +--------------------------------------------------------------------- +GraphLCD driver library + +The GU126X64-K610A4 driver +--------------------------------------------------------------------- + +Description +----------- +The GU126X64-K610A4 driver supports Noritake GU126X64D-K610A4 VFD +display. + +The VFD is connected to a single PC parallel port. + +Wirings +------- +The GU126X64-K610A4 driver supports the following connections on a +parallel port: + + + printerport LCD other + ----------- ---------------- ------- + 5V (Con1.1) VCC (Power supply 5V) + ACK (10) MB (Con1.9) (Module Busy) + 0V (Con1.5) GND (Ground) + + GND (18) 0V (Con2.1) (Ground) + INIT (16) ENABLE (Con2.2) (ENABLE) + D0 (02) PA0 (Con2.3) (DataBit 0) + D1 (03) PA1 (Con2.4) (DataBit 1) + D2 (04) PA2 (Con2.5) (DataBit 2) + D3 (05) PA3 (Con2.6) (DataBit 3) + D4 (06) PA4 (Con2.7) (DataBit 4) + D5 (07) PA5 (Con2.8) (DataBit 5) + D6 (08) PA6 (Con2.9) (DataBit 6) + D7 (09) PA7 (Con2.10) (DataBit 7) + +The Display is configured to parallel port mode with "Clock Input" +to "Falling Edge". + +================================================================ + +Configuration Parameters +------------------------ +The GU126X64-K610A4 driver supports the following parameters in +config file: + +Device + Instead of using the direct output via port address (see Port), you + can use the parport device (/dev/parportX). The advantage over the + direct output via port address is that this works for non-root users + also. But it's a little bit slower. The modules ppdev.o, parport.o + and parport_pc.o must be loaded or compiled into the kernel. + +Port + Sets the port address of the parallel port. If this parameter is not + given, 0x378 is used. To use this direct output, the program that + uses the driver library has to be started with user 'root'. + +Width + Sets the horizontal size of the display. If this parameter is not + given, a default value of 256 pixels is used. + +Height + Sets the vertical size of the display. If this parameter is not + given, a default value of 64 pixels is used. + +UpsideDown + Rotates the display output by 180 degrees. This might be useful, if + the LCD is mounted upside-down. + Possible values: 'yes', 'no' + Default value: 'no' + +Invert + Inverts the display. + Possible values: 'yes', 'no' + Default value: 'no' + +Brightness + Sets the brightness of your display's backlight. + Possible values: 0 <= x <= 100) + Default value: 100 + +AdjustTiming + To get a timing that is as accurate as possible, the drivers measure + the time for port commands (see: benchmark in syslog). You might + decrease or increase the time to wait after port commands with this + parameter. Normally, there is no need to change this parameter. + Possible values: -50 <= x <= 50 + Default value: 0 + +RefreshDisplay + Normally, most of the drivers do not update the whole display, but + only the areas that have changed since last update. So it might be, + that some faulty pixels would stay a longer time. To avoid this, the + plugin makes a complete refresh from time to time. This parameter + defines how often a complete refresh will be done. + e.g.: A value of 5 means, that the plugin will make a complete + refresh on every 5th update. + A value of 0 completely disables complete refreshs. + Possible values: 0 <= x <= 50 + Default value: 0 + +Debug + Prints debugging information of some methods of the driver. + (add the values of interest) + + 1: show a log at the start of a refresh + 2: show a log at the end of a refresh with timing information + 4: show the rows (8 pixel) refreshed + 8: show every commands/bytes sent to the display + 16: log every unsuccessful waiting for display acknowledge |