diasplay i2c and eeprom

Comments

• Repetier

  November 2018

  I2C is prone to freezes on communication problems. Try without display and see if eeprom works (assuming you have a due with i2c eeprom). Then you know that there is a conflict with I2C, maybe different speeds.
  
  Does the display show?
• RAyWB

  November 2018 edited November 2018

  see here:

  on due you should use second I2C port for Display.

  https://forum.repetier.com/discussion/3092/ssd1306-i2c-display-on-due#latest
• Oleg

  November 2018 edited November 2018

  Repetier said:

  I2C is prone to freezes on communication problems. Try without display and see if eeprom works (assuming you have a due with i2c eeprom). Then you know that there is a conflict with I2C, maybe different speeds.
  
  Does the display show?

  see here:

  on due you should use second I2C port for Display.

  https://forum.repetier.com/discussion/3092/ssd1306-i2c-display-on-due#latest

  Display, encoder eeprom work. but rewriting eeprom does not work.

  If you turn off the display, then the eeprom rewrite works
• Oleg

  November 2018 edited November 2018

  if you specify spi display, then eeprom overwrite works

  does not work only with i2c display, while reading works and overwriting is not.

  Tell me where to look for an error in the firmware?
  while using an alternative. I keep eeprom on SD
  

  
  arduino due 
  ramps fd
  i2c pin 20-21
  my uiconfig.h  
  #define UI_DISPLAY_TYPE 5
  // ST7920 with software SPI//#define U8GLIB_ST7920// SSD1306 with software SPI//#define U8GLIB_SSD1306_SW_SPI// SH1106 with software SPI// U8GLIB_SH1106_SW_SPI// SSD1306 over I2C using hardware I2C pins// #define U8GLIB_MINI12864_2X_SW_SPI#define U8GLIB_SSD1306_I2C
  #define UI_HAS_BACK_KEY 0
  /** Uncomment this, if you have keys connected via i2c to a PCF8574 chip. */ //#define UI_HAS_I2C_KEYS  void uiInitKeys() { #if UI_HAS_KEYS!=0   UI_KEYS_INIT_CLICKENCODER_LOW(33,31); // click encoder on pins 47 and 45. Phase is connected with gnd for signals.  //UI_KEYS_INIT_BUTTON_LOW(4); // push button, connects gnd to pin   //UI_KEYS_INIT_BUTTON_LOW(5);   //UI_KEYS_INIT_BUTTON_LOW(6);   //UI_KEYS_INIT_BUTTON_LOW(11);   //UI_KEYS_INIT_BUTTON_LOW(42);   //  UI_KEYS_INIT_CLICKENCODER_LOW(47,45); // click encoder on pins 47 and 45. Phase is connected with gnd for signals.   UI_KEYS_INIT_BUTTON_LOW(35); // push button, connects gnd to pin //  UI_KEYS_INIT_MATRIX(32,47,45,43,41,39,37,35); #endif } void uiCheckKeys(uint16_t &action) { #if UI_HAS_KEYS!=0    //UI_KEYS_CLICKENCODER_LOW_REV(33,31); // click encoder on pins 47 and 45. Phase is connected with gnd for signals. // UI_KEYS_BUTTON_LOW(4,UI_ACTION_OK); // push button, connects gnd to pin // UI_KEYS_BUTTON_LOW(5,UI_ACTION_NEXT); // push button, connects gnd to pin  //UI_KEYS_BUTTON_LOW(6,UI_ACTION_PREVIOUS); // push button, connects gnd to pin  //UI_KEYS_BUTTON_LOW(11,UI_ACTION_BACK); // push button, connects gnd to pin  //UI_KEYS_BUTTON_LOW(42,UI_ACTION_SD_PRINT ); // push button, connects gnd to pin  //UI_KEYS_CLICKENCODER_LOW_REV(47,45); // click encoder on pins 47 and 45. Phase is connected with gnd for signals.  //UI_KEYS_BUTTON_LOW(43,UI_ACTION_OK); // push button, connects gnd to pin #endif
  
• RAyWB

  November 2018 edited November 2018

  the problem is that eeprom and display use different i2c routines.

  u8glib(Display library) has it´s own routines which don´t match the HAL routines.

  That´s what causes the problems.

  So if you follow my suggestion with  DUE´s second I2C Port (pin 70/71) for display , you can use display and I2C EEProm without problems.

  (Had the same problems on my DUE/RADDS/SSD1306 combination)
  
• Oleg

  November 2018

  good afternoon. tell me how to use 20 -21 under EPROM 70 and 71 under the display. I failed. is there an example of what you need to change in the firmware?null
• RAyWB

  November 2018 edited November 2018

  what to change is written in the thread i supposed

  https://forum.repetier.com/discussion/3092/ssd1306-i2c-display-on-due#latest

  
  

  only line numbers changed , as there were many updates since then.

  
  

  in actual version there is only a single line to change, just edit ui.cpp and search for

  
  

  u8g_InitI2C(&u8g, &u8g_dev_ssd1306_128x64_i2c, U8G_I2C_OPT_NONE); (should be around line 909)

  change to:

  
  

  u8g_InitI2C(&u8g,&u8g_dev_ssd1306_128x64_i2c,U8G_I2C_OPT_DEV_1);
  

  
  

  
  

  remember there are hardware combinations which need modifications,

  It is impossible to have all  setups working out of the Box and especially the I2C stuff

  sometimes is quite tricky.

  And of coarse Repetier does a great job in writing and supporting this Firmware .

  Keep in mind : up to now Firmware and support is still for free
  

  
  

  
  

  
  
  
• Oleg

  November 2018