Search found 18 matches

by Bryan
Mon Apr 23, 2012 3:27 am
Forum: Modules
Topic: I2C interface to SD21 Servo Controller
Replies: 2
Views: 2972

Hello again, persistance pays off - I have it working. Here's the code to write the speed and position to the controller. Speed=10 '0=full speed, 1 = slowest Position=900 '1500 = center position for initial test I2C.Start 'begin I2C comm I2C.WriteByte(Servo_Controller) 'wake up the controller WriteB...
by Bryan
Sun Apr 22, 2012 10:59 pm
Forum: Modules
Topic: I2C interface to SD21 Servo Controller
Replies: 2
Views: 2972

I2C interface to SD21 Servo Controller

Hi, I've been trying to interface a 21 channel servo controller to a Pic 18f458 for several days and could really use a hand. Communications is I2C For each servo there are only two parameters to deal with, Speed and Position To control servo1 I need to write the speed into register 0 (speed is a by...
by Bryan
Mon Nov 09, 2009 7:50 am
Forum: IDE
Topic: Lothar Stoltz ICD
Replies: 9
Views: 8261

Pickit2 vs Pickit3

You might be interested in David Jones video review of the new Pickit3 and Microchips 'video' response.

checkout this link:

http://www.eevblog.com/2009/10/21/eevbl ... er-review/

ps note that microchip is already making changes to the new pickit3
Bryan
by Bryan
Thu Apr 02, 2009 7:50 pm
Forum: Compiler
Topic: Bootloader, code protection and config fuses
Replies: 9
Views: 5571

Bootloader starting point

Liak, I'm looking for a bootloader for the 18F8722 . I came across one called "The Tiny Bootloader" which is only 100 bytes long (and free). It might be a starting point for you (the author lists 18F processors it will work with (unfortunetly not the 18F8722 - however it may only require minor chang...
by Bryan
Mon Mar 30, 2009 4:01 pm
Forum: General
Topic: bootloader for 18F4523
Replies: 5
Views: 5331

Bootloader for 18F4523

Gabriel, sorry, the article says bootloader is 100 words not bytes. Tiny Bootloader From Website: -------------------------------------------- This is a bootloader for the Microchip PIC microcontrollers. It is the smallest bootloader, taking less than 100 words of program space; Supports families of...
by Bryan
Mon Mar 30, 2009 3:55 pm
Forum: General
Topic: bootloader for 18F4523
Replies: 5
Views: 5331

bootloader for 18F4523

Gabriel, I'm looking for a bootloader for the 18F8722 and came across one called "The Tiny Bootloader" which is only 100 bytes long (and free). It might be a starting point for you (the author lists the 18F4525 as one of the processors it will work with - may only require minor changes for your 4523...
by Bryan
Tue Feb 03, 2009 6:46 am
Forum: IDE
Topic: Code Explorer Variables not listing
Replies: 2
Views: 3219

Code Explorer Variables not listing

Hi Steven, thanks for clearing this up for me. I put "Public" in front of my "newvariable" and sure enough it showed up in the variable list on the explorer tree. Lots more to learn but really enjoying the journey !

Bryan
by Bryan
Sun Feb 01, 2009 3:07 am
Forum: IDE
Topic: Code Explorer Variables not listing
Replies: 2
Views: 3219

Code Explorer Variables not listing

In my programming to date I've made a practice of declaring all my variables at the beginning of a program or module and they've always showed up in the Code Explorer tree under "Variables". I'm still learning to program in Swordfish (and loving it!) so I'm always looking at what others have done, l...
by Bryan
Sun Feb 01, 2009 2:40 am
Forum: IDE
Topic: Updated Library Explorer
Replies: 13
Views: 9105

Library Explorer won't load

Hi John, thanks for all your hard work - the library explorer has been a big help. I haven't used it for a while though and when I tried to run it today I got the following error message in a small window "List index out of bounds (2806)" When I then click on the "OK" button in this small window the...
by Bryan
Mon Nov 10, 2008 4:55 am
Forum: Wiki Announcements
Topic: SDFileSystem Version 4.0.9
Replies: 32
Views: 56236

SDFileSystem Version 4.0.9 to 4.1.4

eureka it works !! Thank you Steven for such a quick fix to the SD File System software and Ryan also for your help. I haven't tried all the SD Card functions yet Steven but Init, dir, mkdir, new file, rename file, serial # all work so I think I can safely say that the circuitry on the prototype PCB...
by Bryan
Sun Nov 09, 2008 6:24 am
Forum: Wiki Announcements
Topic: SDFileSystem Version 4.0.9
Replies: 32
Views: 56236

SDFileSystem Version 4.0.9

Thank you Steven, I'll download the new version and give it a try first thing tomorrow morning.
I'll let you know how I make out with it.

Bryan
by Bryan
Sat Nov 08, 2008 2:03 am
Forum: Wiki Announcements
Topic: SDFileSystem Version 4.0.9
Replies: 32
Views: 56236

SDFileSystem Version 4.0.9

Hi Ryan, thanks for your interest and your input to my problem, you've got me thinking. I thought that because the 18F8722 had two hardware MSSP modules both supporting SPI that either one would work fine. Is there an issue with the software that I'm not considering?

Thanks
Bryan
by Bryan
Fri Nov 07, 2008 6:56 am
Forum: Wiki Announcements
Topic: SDFileSystem Version 4.0.9
Replies: 32
Views: 56236

SD Card Testing with SDFile System Version 4.0.9

Hi Steven, I sure appreciate you sharing your hard work done on the SD File system module. I'm looking forward to including it in the application I'm working on. I'm in a bit of a pickle and hope you have a minute to point me in the right direction. I'm trying to verify a pcb design that includes a ...
by Bryan
Thu Oct 16, 2008 4:34 am
Forum: Modules
Topic: SDFileSystem.bas ???
Replies: 37
Views: 23131

Interfacing 3.3v SD card to 5v PIC

Hi Liak, congratulations on your success! Did you end up using the voltage dividers? I just came across what looks to me like fairly authoritive article on the interfacing of a SD card to a 5 volt PIC processor. Interesting what they say about the DO line from the SD card needing a TTL buffer. This ...
by Bryan
Sun Oct 12, 2008 10:07 pm
Forum: Modules
Topic: SDFileSystem.bas ???
Replies: 37
Views: 23131

SD card schematic

Hi Liak, there is a schematic of a SD card daughter board on the Micro Electronika site that shows a switchable arrangement for the inputs to the SD card. (the voltage dividers can be switched in when used with a 5.0 V processor) you can find it at: http://www.mikroe.com/pdf/mmc_proto_schematic_v100...