As title says, I'm working with a PIC16f1937 and the delay_ms() function is delaying too long. If I set delay_ms(10), it will delay for what seems like half a second. I'm using the internal oscillator "INTOSC oscillator: I/O function on clkin pin" at an oscillator frequency of 32.000 MHz. Does anyon...

I googled around some more, and found a way to get precise a 1Hz if anyone is interested:
http://www.romanblack.com/one_sec.htm

Hi all, I'm looking for a way to trigger an interrupt precisely every 1 second (1Hz). Is this possible using a PIC16f887, its internal 8MHz clock, and timers? I have tried to research ways to generate 1Hz from timers, but I haven't been able to get a straightforward solution. Can you help me out or ...

Sorry, forgot to mention: I'm using a PIC16F887. @jani I see, that makes sense why I'm getting the IRP bit warning. So is there any way I can have a single array/struct across multiple memory banks? I'm still unsure why I'm getting the "Not enough RAM" error seeing as I was only at 34% RAM consumpti...

I have 3 cases of code: one which compiles fine, one which gives the "IRP bit must be manually set" warning, and one which gives the "Not enough RAM" error. Each piece of code has a subtle difference from the others, but produces different errors. I am creating a matrix of characters, but at a certa...

Thanks for the tips. I think I have a pretty good design, I have done some research and analysis. The 18 column pins can supply enough current, and the 7 row pins toggle BJTs that sink the current from the columns. Code-wise, I wrote simple routines to turn on each light and/or all the lights in mul...

I made an LED matrix of size 18x7 controlled by a pic16f887. Columns are positive, rows are negative and pin mappings are as follows: 18 rows in this order: PORTB7-0, PORTD7-4, PORTC7-4, PORTD3-2 7 columns in this order: PORTA0-5, PORTE0 This was the most convenient set up since I did it on on a per...

I know this question has been asked many times in different ways, but there really is no straightforward answer that provides a solution (at least for what I want to do). I want to be able to store port bits/pins in an array like so: sbit arr[3] = {PORTA.B1, PORTB.B2, PORTC.B3}; but when I try to do...

Fixed it, I'll post the solution if anyone else has this problem. The problem was with how I initialized the pins: void initMain() { ANSEL = ANSELH = 0; // All I/O pins are configured as digital C1ON_bit = C2ON_bit = 0; // Disable comparators TRISA = TRISB = TRISC = TRISD = TRISE = 0; // All ports p...

I have tried searching, but I could not get a clear answer and/or find anything the same as what my question is.

I'm programming in C on a pic16f887 and I want more versatility with pins such as being able to put them into an array, passing them as arguments to functions...etc. So I was wondering what "type" a bit such as PORTB.F1 is? How would I store bits into an array? Would this work?: const char pinArr[3]...

Can any one offer any more explanation?

I have tried and tried and double checked my code. Double checked the hardware, no problem there.
I probed pins RA3, RB3, and RD3 and there is simply no voltage there so the problem is with the pic/software.

Why is that?
The data sheet says RA3 RB3 and RD3 are bidirectional pins?

Not sure what you mean by that. In the datasheet, RA3 RB3 RD3 are shown as bidirectional pins: https://lh4.googleusercontent.com/-sELB0wxijoE/T6Rali1JhwI/AAAAAAAAAaE/GhJdGQJdiZ4/s720/pic.png I'm pretty sure the initialization of those pins to output is correct, I've tried using two different control...

The pins can be set as outputs and can sink/source the current I have designed them for. The circuitry is very simple so there should be no interference to the pins. I ran another test code and found that pins RA3, RB3, and RD3 are not turning on. Coincidence that its bit 3 on each port? Here is the...