symbol e=5
symbol rs=4
symbol bbit=3
symbol lbit=2
symbol twoline=8
symbol scroncron=14
symbol clr=3
symbol redled=7
symbol redpb=pin0
symbol whtpb=pin7
symbol yelpb=pin2
symbol tbout=6
symbol serpin=6
symbol char=b2
symbol index=b3
symbol Line1=0
symbol Line2=64
symbol Line3=20
symbol Line4=84
symbol SetDDRam=128
symbol ShiftLeft=24
symbol ShiftRight=30
symbol bnum=b4
symbol defidx=b5
symbol numadr=b6
symbol bchr=b7
symbol tnumadr=b8
symbol cpos=b9
symbol coff=b10
symbol idx2=b11
symbol total=b12
symbol wtotal=b13
'Initialise IO
dirsb=%11111111
dirsc=%00001000
'Initialise display unit
init:
let pins = 0 'Clear all output lines
pause 200 'Wait 200 ms for LCD to reset.
let pins = bbit 'Set to 8-bit operation
pulsout e,1
pause 10 'Wait 10 ms
pulsout e,1 'Send data again
pulsout e,1
let pins = lbit 'Set to 4-bit operation.
pulsout e,1
pulsout e,1 'Send data again.
let pins = twoline 'Set to two line operation
pulsout e,1
let char = scroncron 'Screen on, cursor on instruction
gosub wrins
char=clr
gosub wrins
start: 'set cursor flag to line 1 col 1
cpos=146
'Define CG0 to 7:
eeprom (31,31,0,0,0,0,0,0)
eeprom (0,0,0,0,0,0,31,31)
eeprom (24,24,24,24,24,24,24,24)
eeprom (3,3,3,3,3,3,3,3)
eeprom (3,7,14,28,24,24,24,24)
eeprom (24,28,14,7,3,3,3,3)
eeprom (24,24,24,24,28,14,7,3)
eeprom (3,3,3,3,7,14,28,24)
char=64
gosub wrins
for index=0 to 63
read index,char
gosub wrchr
next
'Go back to DDRam
char=cpos
gosub wrins
'Define bignum data 0 to 9
eeprom (86,52,52,120) '0
eeprom (3,3,3,3) '1
eeprom (86,8,80,114) '2
eeprom (86,8,6,120) '3
eeprom (52,120,4,4) '4
eeprom (81,112,6,120) '5
eeprom (86,48,86,120) '6
eeprom (22,4,4,4) '7
eeprom (86,120,86,120) '8
eeprom (86,120,4,120) '9
'display title
char=128
gosub wrins
eeprom 200,("BIG COUNT ")
for index=200 to 211
read index, char
gosub wrchr
next
'Display a count from 000 to 255
main:
for index=0 to 255
total=index
for idx2=1 to 3
wtotal=total % 10
total=total/10
bnum=wtotal
gosub wrbig
next
pause 200
cpos=146
char=cpos
gosub wrins
next
goto main 'loop
wrchr:
if char<255 then skipconvspc
char=32
skipconvspc:
gosub wrbyte 'Send High nibble and set up low nibble
high rs 'Make sure RS is high
pulsout e,1 'Pulse enable pin to send data.
return
wrins:
gosub wrbyte 'Send High nibble and set up low nibble
pulsout e,1 'Pulse enable pin to send data.
return
wrbyte:
let pins = char/16 'High nibble of char to outputs 0 to 3
pulsout e,1 'Pulse the enable pin to send data.
let pins = char & 15 'Low nibble of char to outputs 0 to 3
return
wrbig: 'find start of definintion for 'bnum'
numadr=bnum*4+64
'write char out
for defidx=0 to 3
tnumadr=numadr+defidx
read tnumadr,bchr 'read byte with next two halves of the line
char=bchr/16-1 'write high nibble as CG
gosub wrchr
char=bchr & 15-1 'write low nibble as CG
gosub wrchr
lookup defidx,(64,20,84,0),coff
char=cpos+coff
gosub wrins
next
'restore to next position in line 1
cpos=cpos-3
char=cpos
gosub wrins
return
