Hello.
I'm trying to connect my CFAH2002A-NGG-JP to a PIC16F84A and things aren't working out quite right. Here is what if going on.
When I try to initialize the LCD, if I place the device in 2-line mode with a blinking cursor and underlined, I see all 40 squares dark with the first two blinking dimly. I can tell they're blinking but it's not a real on/off look.
If I set the device to 1-line mode, turn the display off, then turn it on with a cursor, underlined and blinking, the cursor looks good and the bottom row isn't dark. The top row is.
I don't quite understand what is going on. I read the spec sheet but I didn't see anything about clearing a particular row.
I can write characters to the bottom row in 1-line mode They are very faint though or don't show up at all. An "H" looks like "| |".
I thought sending a 0x38, 0x0F and then 0x01 would give me a blank screen in 2-line mode in the "home" position.
Obviously I mis-read something. Did I break it?? Any help would be appreciated since I'm lost now.
I'm trying to connect my CFAH2002A-NGG-JP to a PIC16F84A and things aren't working out quite right. Here is what if going on.
When I try to initialize the LCD, if I place the device in 2-line mode with a blinking cursor and underlined, I see all 40 squares dark with the first two blinking dimly. I can tell they're blinking but it's not a real on/off look.
If I set the device to 1-line mode, turn the display off, then turn it on with a cursor, underlined and blinking, the cursor looks good and the bottom row isn't dark. The top row is.
I don't quite understand what is going on. I read the spec sheet but I didn't see anything about clearing a particular row.
I can write characters to the bottom row in 1-line mode They are very faint though or don't show up at all. An "H" looks like "| |".
I thought sending a 0x38, 0x0F and then 0x01 would give me a blank screen in 2-line mode in the "home" position.
Obviously I mis-read something. Did I break it?? Any help would be appreciated since I'm lost now.
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