Hi
I recently bought at CFAH2002A-NYA-JP. I am trying to get it working using the 4-bit interface. I have followed the instructions in the HD44780U manual very closely but still can't get it to initialize properly. The initialization process seems to go fine up to the DISPLAY_OFF instruction, that is the display is truned off (so wiring is OK). The next two instructions, the display clear and the entry mode set, seem to skrew things up, after they are executed the first line of the lcd is all black, also the top 3 pixels of the second row a dark. After each instruction sent to the LCD I check the busy flag, wait untill it is 0, then send the next intstruction.
Has any one gotten the 4-bit interface working on the 20x2 LCD? Can any one point to me what I might be doing wrong?
Thanks in advance
Ledion
I recently bought at CFAH2002A-NYA-JP. I am trying to get it working using the 4-bit interface. I have followed the instructions in the HD44780U manual very closely but still can't get it to initialize properly. The initialization process seems to go fine up to the DISPLAY_OFF instruction, that is the display is truned off (so wiring is OK). The next two instructions, the display clear and the entry mode set, seem to skrew things up, after they are executed the first line of the lcd is all black, also the top 3 pixels of the second row a dark. After each instruction sent to the LCD I check the busy flag, wait untill it is 0, then send the next intstruction.
Has any one gotten the 4-bit interface working on the 20x2 LCD? Can any one point to me what I might be doing wrong?
Thanks in advance
Ledion
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