some help with math

[longpole001]

gives 0 when less then 3

[Art]

If you have to check for <3 as well you might be approaching the code size of the lookup table.
Are all the lookup tables repeating like this? It’s the sort of problem I like,
certianly a mind F* though.

[longpole001]

as a test i reversed high to low byte in the font structure

unfortunately it worked , and this is supported by the data dumps as shown in previous posts , so to make the font common routine work i would have to reverse all the data stucture for each font chr - which if i dont have abetter option will need to be done

        ' Code for "0"  Asci 48    90 real values _   
@ dw      0x0000,0x0000,0x00FF,0xFF03,0x0FC0,0xF0FF,0xFF1F,0x1FF8,0xF8FF,0xC33F,0x3FFC,0xFC81;,0x3F   
@ dw      0x813F,0x7FFC,0xFE00,0x007F,0x7FFE,0xFE00,0x007F,0x7FFE,0xFE00,0x007F,0x7FFE,0xFE00,0x007F   ;swaped low high bytes arround 
@ dw      0x7FFE,0xFE00,0x007F,0x7FFE,0xFE00,0x813F,0x3FFC,0xFC81,0xC33F,0x1FFC,0xF8FF,0xFF1F;,0xF8  
@ dw      0x0FF8,0xF0FF,0xFF03,0x00C0,0x00FF,0x0000,0x0000,0x0000

[Art]

If you can write to that area your program could swap the data and write it back,
then set a flag somewhere in a spare EEPROM bit to flag not to do it again.
That’s if you can’t write something to spit it out a serial terminal in the format you want it.
If the pic can read that and also has a serial terminal, you should be able to get it to format the lines as code you have above.

[longpole001]

sorry richard the result i am seeing does not support what your are saying and the results show on the GLCD and debug terminal show the seqaunce for @ db option and @ dw to be incorrect when using readcode i have at the moment , a it gets 1 byte at a time

remember the whole goel is to

a. not change the font original data sequence of values
b. store only the font data values , and not add any other values to flash to get the data back - unlike pokecode does




try it for your self

this is font chr "0" , where the font is 24 bits wide for (X) and 30 lines (Y)high
LG font values for Common_font routine then are
Y_scan = 29 ' 30 - Y scan lines - 1 - Cos "for " starts at 1
X_scan = 3 ' 3 - X scan x 8 bits ( 24 bits)
Font_lookup = 1 ' Use LG_Font_lookup
gosub Font_Common ' not using flash chip


with poke/peek it works ok with this code
terminal should show the same data format and exact seq as the pokecode data

 
        ' Code for "0"  Asci 48    90 real values _   
pokecode $00,$00,$00,$00,$FF,$00,$03,$FF,$C0,$0F,$FF,$F0,$1F,$FF,$F8,$1F,$FF,$F8,$3F,$C3,$FC,$3F,$81,$FC,$3F,_
         $81,$FC,$7F,$00,$FE,$7F,$00,$FE,$7F,$00,$FE,$7F,$00,$FE,$7F,$00,$FE,$7F,$00,$FE,$7F,$00,$FE,$7F,$00,_
         $FE,$7F,$00,$FE,$7F,$00,$FE,$7F,$00,$FE,$3F,$81,$FC,$3F,$81,$FC,$3F,$C3,$FC,$1F,$FF,$F8,$1F,$FF,$F8,_
         $0F,$FF,$F0,$03,$FF,$C0,$00,$FF,$00,$00,$00,$00,$00,$00,$00

code to place the code on glcd and terminal - terminal should show the address and data in the same sequance as the data input here

'=================== FONT COMMON ROUTINE - pokecode use ========================== 
' Assumes gl_x, gl_y,X_scan,Y_scan,Font_lookup   
' ALL FONTS MUST BE gl_x = 8 , 16 , 24 etc 
' Inv_font = 0 = normal 1= inverse   

Font_Common: 
   x_save = gl_x                ' save the gl_x start point value 
   y_save = gl_y                ' save the gl_y start point value
   gl_yb  = y_save + Y_scan     ' number of y scans for the char from y starting point(0) 
   gl_xb  = 0 
   Address = 0 
   if Font_lookup = 1  then 
@ GetAddress _LG_Font_Base, _Font_Base_Address                 ; gets base start address of LG_font into  Font_Base_Address varable 
      Font_Index = (LG_font - 45)* (90*2)                       ' remove the ascii chr value 45 offset  0 * font chr length x 2 cos of RETLW INSTRUCTION for each byte read  in index 
       HSEROUT [13,10,"lg Font_Base_Address = ",hex Font_Base_Address," font index = ",dec Font_Index, 13,10]     'debug 
  endif
        
   if Font_lookup = 2  then                                    ' remove the offset of the first symbol $2D / 45  so start at 0 
@ GetAddress _Med_Font_Base, _Font_Base_Address
        Font_Index = (Med_font - 45)* (40*2)                   ' remove the ascii chr value 45 offset * font chr length in index
   endif                                        
   Address = Font_Base_Address + Font_Index                    'gets you to the start of the glyph
 
   for gl_y = y_save to gl_yb      ' y scan lines, start to finish values
       gl_x = x_save               ' clear x position to start point (keep it an 8bit multiple)
       gosub gl_gaddr              ' Set address
       
      for gl_xb = 1 to X_scan        ' gl_x byte x  X scan bytes on each line
          peekcode Address,gl_byte   ' read the indexed byte in
          HSEROUT [hex Address,"- ",hex gl_byte, ","]  
         glcd_msb = gl_byte         
          glcd_cmd = DATA_WR_INC     ' write and increment
          gosub send_1               ' send to glcd
          Address = Address+2        ' inc address here +2 cos each byte includes intruction code  , as data start at 0  
      next gl_xb                     ' next byte of font
   next gl_y                       ' next scan line of font
   gl_y = y_save                   ' Restore the Y location    
   gl_x = x_save                   ' Restore the X location
 return

to use @ db data format the poke code data is changed to this format

         ' Code for "0"  Asci 48    90 real values _   
@ db     0x00,0x00,0x00,0x00,0xFF,0x00,0x03,0xFF,0xC0,0x0F,0xFF,0xF0,0x1F,0xFF,0xF8,0x1F,0xFF,0xF8,0x3F,0xC3,0xFC,0x3F,0x81,0xFC,0x3F
@ db     0x81,0xFC,0x7F,0x00,0xFE,0x7F,0x00,0xFE,0x7F,0x00,0xFE,0x7F,0x00,0xFE,0x7F,0x00,0xFE,0x7F,0x00,0xFE,0x7F,0x00,0xFE,0x7F,0x00
@ db     0xFE,0x7F,0x00,0xFE,0x7F,0x00,0xFE,0x7F,0x00,0xFE,0x3F,0x81,0xFC,0x3F,0x81,0xFC,0x3F,0xC3,0xFC,0x1F,0xFF,0xF8,0x1F,0xFF,0xF8
@ db     0x0F,0xFF,0xF0,0x03,0xFF,0xC0,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00

routine to get this data out and into the corect sequance - BUT THIS DOES NOT WORK AS THE DATA IS OUT OF SEQUANCE cos of readcode of low high reading

 Font_Common: 
   x_save = gl_x                ' save the gl_x start point value 
   y_save = gl_y                ' save the gl_y start point value
   gl_yb  = y_save + Y_scan     ' number of y scans for the char from y starting point(0) 
   gl_xb  = 0 
   Address = 0 
   if Font_lookup = 1  then 
@ GetAddress _LG_Font_Base, _Font_Base_Address                 ; gets base start address of LG_font into  Font_Base_Address varable 
       Font_Index = (LG_font - 45)* 90                          ' remove the ascii chr value 45 offset  0 * font chr length                                                            
     HSEROUT [13,10,"lg Font_Base_Address = ",hex Font_Base_Address," font index = ",dec Font_Index, 13,10]     'debug
   endif
        
   if Font_lookup = 2  then                                    ' remove the offset of the first symbol $2D / 45  so start at 0 
@ GetAddress _Med_Font_Base, _Font_Base_Address
        Font_Index = (Med_font - 45)*40                        ' remove the ascii chr value 45 offset * font chr length in index
   endif                                        
   Address = Font_Base_Address + Font_Index                    'gets you to the start of the glyph
 
   for gl_y = y_save to gl_yb      ' y scan lines, start to finish values
       gl_x = x_save               ' clear x position to start point (keep it an 8bit multiple)
       gosub gl_gaddr              ' Set address
      for gl_xb = 1 to X_scan       ' gl_xb byte x  X scan bytes can be 2 or 3 on each line
         readcode Address,gl_byte
         HSEROUT [hex Address,"- ",hex gl_byte, ","] 
          glcd_msb = gl_byte         ' put in 1st byte - stored as         
          glcd_cmd = DATA_WR_INC     ' write and increment
          gosub send_1               ' send to glcd
          Address = Address + 1      ' inc address + 1  
      next gl_xb                     ' next byte of font
        
   next gl_y                       ' next scan line of font
   gl_y = y_save                   ' Restore the Y location    
   gl_x = x_save                   ' Restore the X location
 return

same data joined to make word values ,

these are stored in flash correct seq in flash as the font data shown here

recovery routine is same as above - and has the same issue readcode gets the data not in correct seq required

        ' Code for "0"  Asci 48    90 real values _   
@ dw     0x0000,0x0000,0xFF00,0x03FF,0xC00F,0xFFF0,0x1FFF,0xF81F,0xFFF8,0x3FC3,0xFC3F,0x81FC        ;,0x3F
@ dw     0x3F81,0xFC7F,0x00FE,0x7F00,0xFE7F,0x00FE,0x7F00,0xFE7F,0x00FE,0x7F00,0xFE7F,0x00FE,0x7F00
@ dw     0xFE7F,0x00FE,0x7F00,0xFE7F,0x00FE,0x3F81,0xFC3F,0x81FC,0x3FC3,0xFC1F,0xFFF8,0x1FFF        ;,0xF8
@ dw     0xF80F,0xFFF0,0x03FF,0xC000,0xFF00,0x0000,0x0000,0x0000