Type in the full discussion title or a part of it.
Discussion Title Created date
5&1/4" floppy drive emulator
I have reason to build a drive emulator for a 5 1/4" floppy drive. I want to build an interface that would let me plug an SD card into a 5 1/4" drive cable and have the machine...
Friday, 4 January 2008 - 20:39
SD Card CMD24
A little background: I am using a Mega8 and an SD Card in SPI mode. I have almost everything working with my SD Card "stuff" except actually writing to the card. I am trying to...
Tuesday, 25 December 2007 - 15:12
LCD Port question
I am using a mega8 for a project and it has outgrown its memory. It is also, coincidentally, time to spin another board. So, I will probably use the mega16 or mega32. My question...
Wednesday, 19 December 2007 - 04:20
Enabling SPI interrupt
I am using CodeVision. I have always used the wizard to set up the interrupts and such and then I just manipulate them. I am now adding SPI functionality to a program I wrote a...
Saturday, 17 November 2007 - 00:51
Tachometer method?
I am using this formula for a tachometer function in a project of mine: RPM=(1/time per rev in seconds)*60 seconds per minute I am using a Mega8 running at 12Mhz. I am reading the...
Saturday, 10 November 2007 - 02:18
Annoying ATK problem
I have an annoying intermittent problem with my STK 500. Sometimes it decides to slow down during programming. It slows to approx 1/10th speed. I am using CodeVision with an...
Sunday, 4 March 2007 - 21:06
Getting closer with SD/MMC - how to address memory?
I can easily put the card into SPI mode and initialize it. I can even send it commands at will and get it to respond. Right now, though, I say "send me a block of data" and it...
Sunday, 25 February 2007 - 16:33
Proper CLK connection on SPI?
I hope this is a proper topic for the AVR forum since it involves how to connect to the AVR. I have had good success with my trying to interface with the MMC/SD card, but I am...
Tuesday, 20 February 2007 - 03:29
Running out of SRAM? How do I know?
As you all know, I want to use the SD card for my fuel injection project. The fuel map is in EEP right now and takes almost all 512 bites. If I use the SD card, I will need to...
Monday, 19 February 2007 - 16:39
C code SPI on AVR
I need to use SPI with an SD/MMC. I thought I would be able to get the SPI working with what information I have, but I just can't seem to grip a couple of simple concepts. Let me...
Saturday, 17 February 2007 - 18:11
SD Card question
I have decided to use SD Cards on this fuel injection, but I am having trouble getting started. If I get an understanding of how to communicate with this thing, I can do some...
Wednesday, 14 February 2007 - 23:03
EFI update - Capacitor question
I have solved the current-related problem with the injectors. When I tried a software PWM peak and hold solution, the MOSFETS got hot very quickly. I was thinking about some work...
Tuesday, 30 January 2007 - 23:31

Pages