Author |
Message |
Topic: Board to suit ATMega8535 wanted |
dongags5
Replies: 5
Views: 496
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Forum: BASCOM-AVR Archive Posted: Fri Jul 18, 2008 7:22 am Subject: Board to suit ATMega8535 wanted |
The DT107 board suits the ATMega8515 but not the ATMega8535 and am using it with the 8515 but now need some A/D ports which are on the 8535. Unfortunately there does not seem to be any board to suit t ... |
Topic: Synthesizer programming |
dongags5
Replies: 16
Views: 1825
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Forum: BASCOM-AVR Archive Posted: Tue Jul 01, 2008 2:40 am Subject: Synthesizer programming |
Thanks Luciano and Sepp,
I like the lower speed achieved by the introduced delay Luciano, as a high programming speed is not necessary for this application. When I was an RF design engineer, involv ... |
Topic: Synthesizer programming |
dongags5
Replies: 16
Views: 1825
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Forum: BASCOM-AVR Archive Posted: Mon Jun 30, 2008 1:30 pm Subject: Synthesizer programming |
Hi Luciano,
I think that 444kHz is too high for my application as the data has a reasonably large physical length to travel and could be subject to spurious noise, whereas with a much slower rate, ... |
Topic: Synthesizer programming |
dongags5
Replies: 16
Views: 1825
|
Forum: BASCOM-AVR Archive Posted: Mon Jun 30, 2008 11:49 am Subject: Synthesizer programming |
Sorry Luciano,
I hadn't scrolled down enough to see your included code, had a quick look and raced away to dinner.
Thanks so much, it will all become clear as I study it.
regards
Don |
Topic: Synthesizer programming |
dongags5
Replies: 16
Views: 1825
|
Forum: BASCOM-AVR Archive Posted: Mon Jun 30, 2008 11:43 am Subject: Synthesizer programming |
G'day Luciano,
The shiftout command looks as though it makes things easy, but I'm still puzzled as to what controls the clock rate. Is it a function of the options, bits and delay? Am I missing som ... |
Topic: Synthesizer programming |
dongags5
Replies: 16
Views: 1825
|
Forum: BASCOM-AVR Archive Posted: Mon Jun 30, 2008 8:48 am Subject: Synthesizer programming |
Hi Luciano,
The chip used is a National Semiconductor synth chip type LMX2325 which has just been made obsolete but I have some of them. See below the URL for the LMX2325 family data sheet. Its pre ... |
Topic: Synthesizer programming |
dongags5
Replies: 16
Views: 1825
|
Forum: BASCOM-AVR Archive Posted: Mon Jun 30, 2008 4:51 am Subject: Synthesizer programming |
I want to program a frequency synthesizer which requires 3 lines from the micro (in my case a ATMEGA8515) with the following signals:
1. A continuous clock, probably around 500Hz (not critical)
2. D ... |
Topic: Parallel port programming address |
dongags5
Replies: 4
Views: 414
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Forum: BASCOM-AVR Archive Posted: Fri Feb 15, 2008 2:04 am Subject: Parallel port address |
I found that the corect address is 5030H and all is well with programming now. I thought that I'd tried that before as it was a base address according to the XP system but maybe not. Panic over and th ... |
Topic: Parallel port programming address |
dongags5
Replies: 4
Views: 414
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Forum: BASCOM-AVR Archive Posted: Wed Feb 06, 2008 12:33 pm Subject: Still no joy |
Thanks for the reply. I followed the thread you listed and it seems that according to Luciano I should run setupio.exe which doesn't seem to exist in my downloaded demo version 1.11.8.7. I don't have ... |
Topic: Parallel port programming address |
dongags5
Replies: 4
Views: 414
|
Forum: BASCOM-AVR Archive Posted: Wed Feb 06, 2008 12:25 am Subject: Parallel port programming address |
I program using the parallel port (LPT1) which is on the motherboard but was always worried about somehow doing a wiring mistake on my board which could damage the motherboard. I installed a pci paral ... |
Topic: EDB? |
dongags5
Replies: 4
Views: 5629
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Forum: BASCOM-EDB Posted: Fri Jul 13, 2007 7:44 am Subject: EDB? |
Thanks guys for enlightening me on the EDB enigma. I think my interests are best served by the Bascom-AVR forum which is the most applicable for me.
regards
Don |
Topic: EDB? |
dongags5
Replies: 4
Views: 5629
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Forum: BASCOM-EDB Posted: Wed Jul 11, 2007 1:10 am Subject: EDB? |
I use another forum frequently and have not used this forum. What is "EDB"? I hate acronyms! |
Topic: Wait statement timing accuracy |
dongags5
Replies: 4
Views: 545
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Forum: BASCOM-AVR Archive Posted: Sun Jul 08, 2007 11:36 am Subject: Wait statement timing accuracy |
Thanks Luciano,
I entered the code suggested by you and found the delay quite accurate and good enough for my application. I had to calibrate my CRO sweep against an accurate 50Hz supply. A 100mS ... |
Topic: Wait statement timing accuracy |
dongags5
Replies: 4
Views: 545
|
Forum: BASCOM-AVR Archive Posted: Sat Jul 07, 2007 5:26 am Subject: Wait statement timing accuracy |
Thanks Craig.
I will do what you suggest but first I will need to learn to use the simulator. Do you know of any tute that would speed up the learning process? I still think there must be something ... |
Topic: Wait statement timing accuracy |
dongags5
Replies: 4
Views: 545
|
Forum: BASCOM-AVR Archive Posted: Sat Jul 07, 2007 3:27 am Subject: Wait statement timing accuracy |
Does anyone know of the relationship between the various WAIT statements such as Wait, WaitmS and WaituS and their actual real time. I know that the relationship for timing delay is worked out somehow ... |
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