Search found 18 matches

I have been working on and off for about a year on a project, and have realized that I need help! My background is in mechanical engineering, so understandably programming is not my strong point.
Th ...

I use bluetooth for both transmit and receive, but this would only be intensive during loading a new program. While the program runs, the bluetooth isn't used much, only to set a few parameters if nee ...

I am currently working on a project that could benefit from a bootloader. I want to make it more convenient by allowing the updates to be done over a bluetooth connection. I have a bluetooth module co ...

Wow, thanks! I being an amateur programmer would never have caught that. I don't fully understand pointer arithmetic, but that method of accessing the high or low byte of an integer was lifted from a ...

I just tried the program without the interrupt and it still doesn't work. Both chips were tested with the same 10MHz crystal. With the picbaud program I noticed the error in the 19200 baud rate is muc ...

Here is the complete program:

#include <18F4620.h>
#device ICD=TRUE
#fuses HS,NOWDT,PUT,NOLVP,NOBROWNOUT
#use delay (clock=10000000)
#use rs232(stream=AX12,baud=19200,xmit=PIN ...

Ok, I have two different student versions of the compiler. For the 16F877A, it is version 3.212, and for the 18F4620, version 4.084.
Just to be 100% sure it was not a harware problem, I put the old c ...

Nope, I'm not doing any low level stuff simply because I don't know how Smile

So there aren't any #byte, #locate, #bit or #org statements in the program. The one thing that may be suspect is the interru ...

Well, I tried installing the 18F4620 chip on the old board to replace the 16F877A. This means all of the hardware, including the crystal is the same. I loaded an essentially identical program that was ...

Hello,

I am working on an application that controls dynamixel ax-12 servo motors. These motors are addressable on a serial bus and can be sent command positions, speeds etc. Anyway, I had the code ...

In the meantime I did get things working by using the old ICD program with the new compiler. This allows me to download code to the chip. But I haven't figured out a way to use the debugger.
Does any ...

I recently upgraded to version 4.084 and my ICD no longer works. I still have an older version of the software on my laptop, and the ICD works fine with it. I updated the firmware on the ICD to the la ...

Thanks for the tips. I will definitely look into using an 18F4620. I do have a place on the board for a resistor between the crystal and the pic, so I'll make use of that.
I'm still curious about th ...

Hello,

I am currently designing a board for the 18f452 pic and I have a couple questions. I would like to to run the chip at 40 Mhz. I understand this can be done in two ways: use a 10Mhz crystal a ...

Right, my mistake. A 16Mhz crystal will give me the desired 1Mbps. I can change the crystal, but how do I get around the compiler limitation of the baud rate? The manual says of the set_uart_speed() f ...