Parallax BASIC Stamp 2e - Page 144

I2CIN - BASIC Stamp Command Reference
Page 142 • BASIC Stamp Programming Manual 2.0b • www.parallaxinc.com
Idx VAR WORD 'Index variable for address
Check VAR NIB 'Index for checking returned values
Result VAR BYTE(16) '16-byte array for returned value
WriteToEEPROM:
DEBUG "Writing...", CR
PAUSE 2000
FOR Idx = 0 TO 2047 STEP 16 'For all 2K locations,
I2COUT 0, $A0+((Idx>>8)*2), Idx, [REP Idx>>4\16] 'Write 16 bytes at once
PAUSE 5
DEBUG "Addr: ", DEC4 Idx, "-", DEC4 Idx+15, " Value: ", DEC3 Idx>>4 & $FF, CR
NEXT
PAUSE 2000
ReadFromEEPROM:
DEBUG CR, "Reading...", CR
PAUSE 2000
FOR Idx = 0 TO 2047 STEP 16 'For all 2K locations,
I2CIN 0, $A1+((Idx>>8)*2), Idx, [STR Result\16] 'Read 16 bytes at once
FOR Check = 0 TO 15 'Check all 16 for
IF Result(Check) <> Idx>>4 & $FF THEN Error 'accuracy, stop if error
NEXT
DEBUG "Addr: ", DEC4 Idx, "-", DEC4 Idx+15, " Value: ", DEC3 Result, CR
NEXT
PAUSE 1000
DEBUG CR, " All Locations PASSED!"
STOP
Error:
DEBUG "Error at location: ", DEC4 Idx+Check, CR
DEBUG "Found: ", DEC3 Result(Check), " Expected: ", DEC3 Idx>>4 & $FF
STOP