sarf2k4 - if you are using the Development version of Marlin, you need to make the changes in pins_SANGUINOLOLU_11.h around line 109
If you are using 1.0.2 then you need to make them in pins.h around line 1281
In both cases, search for this comment: (//SPI GLCD 12864 ST7920 ( like [www.digole.com] ) For Melzi V2.0)
Also, if your Sanguinololu is running at 20 MHz, you will need to comment out the line #pragma GCC optimize (3) in file ultralcd_st7920_u8glib_rrd.h or else you will get garbled display
If you are using 1.0.2 then you need to make them in pins.h around line 1281
In both cases, search for this comment: (//SPI GLCD 12864 ST7920 ( like [www.digole.com] ) For Melzi V2.0)
Also, if your Sanguinololu is running at 20 MHz, you will need to comment out the line #pragma GCC optimize (3) in file ultralcd_st7920_u8glib_rrd.h or else you will get garbled display