18F2431 Learning Curve

[mackrackit]

How are the configs setup?

[Demon]

I always stay away from analog pins until I get a basic program running.

Robert

[Aussie Barry]

Thanks Robert - Unfortunatley this device has so many options per pin. If I stay away from the analog pins then I run into PWM pins, motion feedback pins and others that I haven't got my head around yet. I thought the RA0/AN0 option was the path of leas resistance.

Dave, I am using my MeProgrammer to configure the device at time of programming.
Details are as follows:
Oscillator = INTRC
Inernal External Switch Over = Enabled
Fail-Safe Clock Monitor - Enabled
Power-Up Timer = Disabled
Brown-Out Reset = Enabled
Brown-Out Reset Voltage = 2.0V
Watchdog Timer = Enabled
Watchdog Timer Postscaler = 1:512
Watchdog Timer Window = Enabled
PWM Pins = Disabled on Reset
Low-Side Transistor Polarity = Active High
High-Side Transistor Polarity = Active High
Special Event Reset = Disabled
MCLR Pin Function = Reset
Stack Overflow/Underflow Reset = Enabled
Low Voltage Programming = Disabled

All other memory options are "Not Protected"

Cheers
Barry
VK2XBP

[Aussie Barry]

Update:

I have added the following lines to my Blinky LED program:

ANSEL0 = 0              ' Set all PORTA as digital I/O
ADCON0.0 = 0            ' Disable A/D module
TRISA = 0               ' Set PORTA as output

I was confident I would see a blinking LED after these changes but was sadly mistaken...

Cheers
Barry
VK2XBP

[mackrackit]

Some will disagree, but I have never trusted the programmer to set the configs.
What version of PBP are you running?

[Aussie Barry]

Ver 3.0.1.4

How should I manually set the configs and/or which configs are critical for my simple application?

I went back to the LCD test program and noticed that I do get two lines of text appearing BUT the timing is way out of kilter - maybe by a factor of 10 or 20?
I am pretty sure I have a clock issue. I don't have any crystals to drop in place but will try to get some tomorrow. I will also re-try the Blinky LED program and reduce the time between toggles to see if I can get something happening...

Cheers
Barry
VK2XBP