ME Labs, Inc. | 1-719-520-5323 | Example Program - I2CX4.pbp

' Name        : I2CX4.pbp
' Compiler    : PICBASIC PRO Compiler 2.6
' Assembler   : PM or MPASM
' Target PIC  : PIC12F683
' Hardware    : LAB-X4 Experimenter Board
' Oscillator  : 4MHz internal
' Keywords    : I2CREAD, I2CWRITE, SEROUT
' Description : PICBASIC PRO program to read and write to I2C SEEPROMs.
' Writes to the first 16 locations of an external serial EEPROM.
' Reads first 16 locations back and send to LCD repeatedly.
'  Note: for SEEPROMs with byte-sized address.
'

Include "modedefs.bas"  ' Mode definitions for Serout

LCD Var GPIO.1          ' LCD TX pin
SCL Var GPIO.4          ' Clock pin
SDA Var GPIO.5          ' Data pin

B0  Var Byte            ' Address
B1  Var Byte            ' Data 1
B2  Var Byte            ' Data 2

   ANSEL = 0            ' Set all digital
   CMCON0 = 7           ' Analog comparators off
   OPTION_REG.7 = 0     ' Enable internal pull ups

   Pause 500            ' Wait for LCD to start up

   For B0 = 0 To 15     ' Loop 16 times
     B1 = B0 + 100      ' B1 is data for SEEPROM
     I2CWRITE SDA, SCL, $A0, B0, [B1] ' Write each location
     Pause 10           ' Delay 10ms after each write
   Next B0

mainloop:
   For B0 = 0 To 15 Step 2 ' Loop 8 times
     I2CREAD SDA, SCL, $A0, B0, [B1, B2] ' Read 2 locations in a row
     Serout LCD, T2400, [$fe, 1, #B0, ": ", #B1, " ", #B2] ' Display 2 locations
     Pause 1000 ' Wait 1 second
   Next B0
   Goto mainloop

   End

           

Download the program file.