ME Labs, Inc. | 1-719-520-5323 | Example Program - I2CWX18.pbp

' Name        : I2CWX18.pbp
' Compiler    : PICBASIC PRO Compiler 2.6
' Assembler   : PM or MPASM
' Target PIC  : PIC16F88 or similar
' Hardware    : LAB-X18 Experimenter Board
' Oscillator  : 4MHz external crystal
' Keywords    : I2CREAD, I2CWRITE, LCDOUT
' Description : PICBASIC PRO program to read and write to I2C SEEPROMs
' that require a word-sized address. Writes to the first 16 locations
' of an external serial EEPROM. Reads first 16 locations back and sends
' to LCD repeatedly.
'

' Define LCD registers and bits
Define LCD_DREG  PORTA
Define LCD_DBIT  0
Define LCD_RSREG PORTB
Define LCD_RSBIT 6
Define LCD_EREG  PORTB
Define LCD_EBIT  3

SDA  Var PORTB.1  ' Data pin
SCL  Var PORTB.4  ' Clock pin

address Var Word  ' Address
B1      Var Byte  ' Data 1
B2      Var Byte  ' Data 2

   ANSEL = 0      ' PORTA is digital
   CMCON = 7      ' PORTA is digital
   Pause 100      ' Wait for LCD to start up

   For address = 0 To 15  ' Loop 16 times
     B1 = address + 100   ' B1 is data for SEEPROM
     I2CWrite SDA, SCL, $A0, address, [B1] ' Write each location
     Pause 10             ' Delay 10ms after each write
   Next address

loops:
   For address = 0 To 15 Step 2 ' Loop 8 times
     I2CRead SDA, SCL, $A0, address, [B1, B2]           ' Read 2 locations in a row
     LCDOut $fe, 1, #address, ": ", #B1, " ", #B2, " "  ' Display 2 locations
     Pause 1000
   Next address
   Goto loops

   End

           

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