LCD with PIC16F687

[schu4647]

I had a similiar problem. Turned out I was configuring registers wrong. I notice some of the pins that you are using can also be analog. You need to make them digital for the LCD command to work. Try making ANSEL = %11111111. I can't remember if %00000000 is analog or digital, but I thought it was analog.

[schu4647]

You also need to make anselh=%00001111. Anselh is the analog register for port C while ansel is the register for port A. Like I said though I may have the 0's and 1's backwards. I always get confused and have to experiment. The four 0s at the beginning are don't cares.

[jblackann]

Apparently that was what I needed to do. I did not have the ANSELH register set. To set each pin to the Digital function, each bit must be set to a "0", so ANSELH = %00000000. Thanks.

My LCD works now and gives me the Hello World example that I have seen in numerous examples. Thanks.

[jblackann]

Would you have any advice for setting the configuration bits? Now I am manually changing them before I load the program into the microcontroller.

I want to disable the watchdog timer and master reset to be internal.

Thanks.

[mister_e]

read the FAQ, there's a huge thread about that http://www.picbasic.co.uk/forum/showthread.php?t=543