Author Topic: NHD-C0220Biz-FSW adds character 0x11 at begining of line  (Read 1524 times)

whAtlGa

  • Newbie
  • *
  • Posts: 2
  • Karma: 0
    • View Profile
NHD-C0220Biz-FSW adds character 0x11 at begining of line
« on: July 06, 2016, 09:40:04 PM »
I probably missed something in the data sheet or in the set up.  Every time I have more that 16 characters on a line I get a symbol at the start of the line that looks like a cross or character 0x11 shown on page 10 of the data sheet.  Happens on both the 1st line and 2nd line. 

Update: After trying different lengths I get character 0x10 at 16 characters and it increases by one the longer the line goes. The text I send is displayed correctly there is just this extra character at the beginning of the line.

« Last Edit: July 07, 2016, 08:23:33 AM by whAtlGa »

Saurabh_B

  • Administrator
  • Hero Member
  • *****
  • Posts: 360
  • Karma: 10
    • View Profile
Re: NHD-C0220Biz-FSW adds character 0x11 at begining of line
« Reply #1 on: July 08, 2016, 12:09:19 PM »
Would it be possible to share the portion of the code where you are sending the characters?

At many times random characters may appear when there is a timing issue. How fast are you writing to the display, and are you allowing a delay after every command?

whAtlGa

  • Newbie
  • *
  • Posts: 2
  • Karma: 0
    • View Profile
Re: NHD-C0220Biz-FSW adds character 0x11 at begining of line
« Reply #2 on: July 08, 2016, 09:31:31 PM »
That does seem to be the case.  The configuration went to the module a byte at the time but the text was handled with block writes.  I changed them to this
for x in range (0,len(Line1)):
     bus.write_byte_data(LCD,0x40,Line1


That resolved the issue.

Thank you for your assistance.

Saurabh_B

  • Administrator
  • Hero Member
  • *****
  • Posts: 360
  • Karma: 10
    • View Profile
Re: NHD-C0220Biz-FSW adds character 0x11 at begining of line
« Reply #3 on: July 11, 2016, 08:20:40 AM »
Glad to see you have it working properly.  8)

 

NHD‐C0220BiZ‐FS(RGB)‐FBW‐3VM capacitor on pin 7&8

Started by Ticoti0xFFBoard Character LCDs

Replies: 1
Views: 2858
Last post April 09, 2014, 10:17:30 AM
by Michael_L
NHD‐C0220BiZ‐FS(RGB)‐FBW‐3VM Potting

Started by SebKisterBoard Character LCDs

Replies: 1
Views: 1875
Last post June 22, 2016, 04:51:17 PM
by Saurabh_B
Blank Display on NHD‐C0220BiZ‐FS(RGB)‐FBW‐3VM

Started by SteveCBoard Character LCDs

Replies: 3
Views: 4685
Last post May 13, 2014, 12:04:36 AM
by SteveC
NHD‐C0220BiZ‐FS(RGB)‐FBW‐3VM - Cable for LED Backlights

Started by wadehBoard Character LCDs

Replies: 2
Views: 915
Last post December 02, 2016, 06:02:27 PM
by wadeh
Sample Code Question for NHD‐C0220BiZ‐FS(RGB)‐FBW‐3VM LCD

Started by SteveCBoard Character LCDs

Replies: 2
Views: 3091
Last post July 31, 2014, 08:44:29 PM
by SteveC