Hi,

Sorry to post again on this subject but I now have a data sheet for this
part (well, the driver chip....but not the product I am using) and the LCD
will not work.
I think that some of the information is lost in the translation from
Japanese which makes it difficult to read what really needs to be done with
the device. The result of this is that I believe the LCD is not being
initialised properly.

From the data sheet, it suggests following the following course of events

(LCD initialise) <<-- Whatever this means.....Does this mean to initialise
it or that it has been initialised by the power up?
<i2c start>
<set addr>
<begin to send data>
<i2c stop>

However, the LCD does not ack the slave address that the data sheet
suggests. Hence, I did this (CCS C).  >>>

void I2C_TestLCD(void)
{

     uint8_t Addr;

    // Set outputs floating
    output_high(EEPROM_SDA);
    output_high(EEPROM_SCL);

    // Setup the configuration byte

     for(Addr = 0 ; Addr < 255 ; Addr++)
     {

         i2c_start();
          delay_ms(WAIT);

          if(i2c_write(Addr))
          {
               // It ignores this address
               printf("%03U=NAK\n\r", Addr);
          }
          else
          {
               // found the address.....it acks
               printf("%03U=ACK\n\r", Addr);
               delay_ms(WAIT);
               i2c_write(0x00);
               delay_ms(WAIT);
               i2c_write(0x20);
               delay_ms(WAIT);
               i2c_write(0x01);
               delay_ms(WAIT);
               i2c_write(0x0E);
               delay_ms(WAIT);
               i2c_write(0x06);
               delay_ms(WAIT);
               i2c_write(0x40);
               delay_ms(WAIT);
               // Write data to DDRAM
              i2c_start();
               delay_ms(WAIT);
               i2c_write(Addr);
               delay_ms(WAIT);
               i2c_write(0x00);
               delay_ms(WAIT);
               i2c_write(0x80);
               delay_ms(WAIT);
              i2c_start();
               delay_ms(WAIT);
               i2c_write(Addr);
               delay_ms(WAIT);
               i2c_write(0x40);
               delay_ms(WAIT);
               i2c_write(0x52);
               delay_ms(WAIT);
               i2c_write(0x52);
               delay_ms(WAIT);

        }

          i2c_stop();

    }

}


This way, I find the slave address then write out the sequence suggested in
the LCD data sheet. Does it work? Nope!
If the thing is anything like the Hitachi, then I know they can be quite
fickle about initialisation.

I presume that this is not being done properly and the datasheet I have
does not say how to do it.
Has anyone knowledge of/written a driver for this LCD?

Best regards,
Dan

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics