Rejoiced a little to quickly above...... it compiled OK but there was no display on the LCD!!!

OK, lets try to summarise progress (or lack thereof) to date with respect to LCD issues

Using Marlin 1.1.0-RC7

This will compile and work with:
#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER line 1142
regardless of whether
#define DOGLCD line 976 is commented out or not

Using RC-7 Bugfix or RC-8

Will not compile with both
#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER line 1253 AND
#define DOGLCD line 1101

Gives following errors
In file included from sketch\ultralcd.cpp:56:0:
ultralcd_impl_DOGM.h:183: error: 'DOGLCD_CS' was not declared in this scope

U8GLIB_DOGM128_2X u8g(DOGLCD_CS, DOGLCD_A0); // HW-SPI Com: CS, A0 // 4 stripes
.................................................. ...............^
ultralcd_impl_DOGM.h:183: error: 'DOGLCD_A0' was not declared in this scope

U8GLIB_DOGM128_2X u8g(DOGLCD_CS, DOGLCD_A0); // HW-SPI Com: CS, A0 // 4 stripes
.............................................^
exit status 1
'DOGLCD_CS' was not declared in this scope

Programme will compile with either option if the other is commented out,BUT only provides a blank screen.

IF I remove U8glib from the system then the compilation with #define DOGLCD fails, complaining of no U8glib, however compiling with #define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER give no errors at all, which suggests that U8glib is not being used.
Which would mean no display.

I don't know whether the above is of any use to anyone with a better knowledge of Marlin than me?


Barry