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any idea? Thanks

well, failed again:(

I'm using 6722 evaluation board this time, and I can change the contrast. I'm sure the external oscillator is 20MHz. And the compiler is upgraded to 4.032. Hope my test program ...

Thanks,

* Ok, then I have to go back with the 6722 evaluation board (5v) since I have a 5v lcd
* I see another copy of my compiler is 4.084, is that better?
* For the external oscillator, the 3v ...

Still suspecting the voltage type (5v/3.3v) of my LCD. The order I did from sparkfun.com was a 5v white on black model:
http://www.sparkfun.com/commerce/product_info.php?products_id=709

but the la ...

Thanks for the instant response PCM Programmer. After making the following change, it's still not working.

1. I'm sure I'm using DB4-DB7 which is closer to the LED+ and LED-
2. I'm not sure about ...

is there any chance my lcd is broken? I can see the backlight is on, and when I change contrast, backlight seems changing. Can't figure out why it doesn't work, so frustrated Rolling Eyes

Ok, tested again with a 6627 3.3v board. Still no luck, pretty much appreciated if you can help me.

Wiring for data pin is still the same:

#define LCD_DB4 PIN_D0
#define LCD_DB5 PIN_D1
#de ...

Sorry for the mistake, if this is the case, I couldn't use 6722 board (5v) interfacing with this LCD?

I will get a 3.3v board and try again.

According to this LCD data sheet, the ADM1602K is a 3 ...

Thank you for responding, I'd like to provide more information so maybe someone can help me.

First of all, I checked my wiring which should be fine, backlight is on, contrast is changing in the fir ...

it's working for sure, I can make led flashing and interacts with UART

Is the PIC working ??

Hi PCM programmer and others,

I'm using CCS 6722 development kit interfacing with a 16x2 lcd (ADM1602k). tried both flex_lcd.c and lcdd.c, I still couldn't make the lcd working.

the only change ...