Accessing special segments on NHD‐0108HZ‐FSW‐GBW 1x8

Ih55t

• July 16, 2014 09:07

I've been using the NHD‐0108HZ‐FSW‐GBW display with success using Arduino hardware and IDE. However, there are 4 segments (large arrows) at the bottom of this display that I can't seem to control.
The data sheet says the segments start at address 0X40. They also list them as 0X40-A1 through 0X40-A4. I don't understand what the A1 means. Additionally, I don't know how to access 0X40. Apparently, I'm lacking a fundamental understanding of the addressing scheme. Any thoughts or direction?

Thanks -

0

• 

  Michael_L

  • July 22, 2014 09:07

  I understand you were given this already, but I will post the code to control those segments below for any one else to use as reference:

  command(0x40); 
                 write(0x02);        //A4
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 command(0xc0);
                 write(0x00);
                 Delayms(500);
  
                 command(0x40); 
                 write(0x04);        //A3
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 command(0xc0);
                 write(0x00);
                 Delayms(500);
  
                 command(0x40); 
                 write(0x08);        //A2
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 command(0xc0);
                 write(0x00);
                 Delayms(500);
  
                 command(0x40); 
                 write(0x10);        //A1
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 write(0x00);
                 command(0xc0);
                 write(0x00);
                 Delayms(500);

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