I2C EEPROM Help

Comments

• PJMonty Posts: 983

  2009-07-02 05:58 edited 2009-07-02 05:58

  Ben,
  
  Add a subject to this thread to get more people to read it. In general, never post without a subject as those threads often get ignored.
  
  Thanks,
  PeterM
• Bean Posts: 8,129

  2009-07-02 11:12 edited 2009-07-02 11:12

  Do you really want the I2CSPEED to be 0.01 ?
  That might cause a problem at high clock speeds.
  Try removing that line.
  
  Bean
  
  ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  Money is not that important....In the grand scheme of things.
  
  ·
• JonnyMac Posts: 9,412

  2009-07-02 16:45 edited 2009-07-02 16:45

  I would avoid using locals, too, as this adds processing overhead and time to do things. You can change I2C_IN to this:
  
  

  FUNC I2C_IN
    ackNak = __PARAM1.0
    I2CRECV SDA, __PARAM1, ackNak
    ENDFUNC
  

  
  
  ... and if you make "flags" the first byte in your variable list it will be global, even in the SX48.
  
  And I agree with Bean; based on the spec sheet lowest I2CSPEED setting you can legally use is 0.125 (~400kHz) -- I think you missed a decimal point.
  
  Post Edited (JonnyMac) : 7/2/2009 4:52:43 PM GMT
• train nut Posts: 70

  2009-07-02 18:19 edited 2009-07-02 18:19

  I took out the I2CSPEED but I still get garbage.
  
  I was using locals to keep from using all my variable space but will try taking local out of I2CRead.
  
  Sorry about no subject as this is my first post.
  
  ·Thanks for the help so far.
  
  Ben
• JonnyMac Posts: 9,412

  2009-07-02 21:25 edited 2009-07-02 21:25

  SX/B has other tricks up it's sleeve that help preserve normal program variables. Have a look at the program that's attached.

  SXB

  SXB

  24LC512_v2.SXB

  8K

  24LC512_v2.SXB 8K