AVR-DOS : Update Program from Card : REPLY
Hello I use this great bootloader to update firmware trough the SD card during the development time. This works great on Atmega2560, but only with SD <= 2GB This card's are dificult to get know and...
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Hello toto In the past when PCs could not read hard drives beyond a certain size they were tricked by creating a partition on the drive only as large as they could read using partitioning software...
View ArticleAVR-DOS : Update Program from Card : REPLY
@toto- Are you referring to the XmegaBootloader_v2_20.zip above or the other ones in this thread? When I was researching this topic I found that some of the other solutions used older versions of the...
View ArticleAVR-DOS : Update Program from Card : REPLY
Hello mmarlette, No, it isn't your Xmegabootloader. I mean the Bootloader from Josef, date 2009. Like i said, i use it to make firmware updates, but only with SD cards <= 2GB Xmega i not use yet....
View ArticleBASCOM-AVR : CANbus problems : REPLY
Hi I have one problem, how send array 8 bytes in this example CAN-elektor.bas I can send only one byte, my CANbus analyzer receive always lenght = 1 (one byte for receiving) Thanks Bogusla
View ArticleAVR-DOS : Update Program from Card : REPLY
[quote:6642c971cd="toto"]Hello mmarlette, No, it isn't your Xmegabootloader. I mean the Bootloader from Josef, date 2009. Like i said, i use it to make firmware updates, but only with SD cards <=...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
I have just noticed that i used [code:1:5f93c12907] Config timer1 = counter, prescale=... [/code:1:5f93c12907] when the help notes say that prescaler cannot be used with counter. It should have been...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
Hi, you can also use the Timer Compare to do this. "THE TIME" is only a variable holding the seconds from the actual time. So the only thing you have to do in INT is, to increment the Variable holding...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
Thanks six1. I'll give that a try. Why the pushall /pop ? My ISR takes 6uS to run, and yours should be shorter. I'll measure it and report back. As an aside, i'm wondering about re-designing to a...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
I'm using PUSHALL/POPALL, because of possible side effects with Interrupts. No one ever knows exactly, what state the micro is, if an interrupt occurs! So it is the "safe mode" to save and after...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
More likely the former. They are battery powered from a 50Ahr battery & solar power with no connection to the outside world so little or no electrical noise.
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
ok :D but nevertheless it is important to use always 100nf capacitors... and don't spare to capacitors. There is always a chance on static voltage or high frequently waves around :D Good ground on...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
I buy 0.1uF caps 1000x at a time,so yes there are lots. The PCBs are a special layout for the task and they are double sided PTH, with no ground loops. I've looked at the 5v rail with a pretty good...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
:smt023 hope it will work! best, michael
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
using lot of 100 nf caps is no cure for everything. the location, the kind, brand are all important. Very important is the ESR of the buffer capacitor. Having big caps or an accu does mean zero if...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
Michael, I put your RTC in place this morning. My system xtal is 9.8304mHz and the interrupt is now slightly shorter than my earlier version by about 1us. The green pulse is the period of the ISR and...
View ArticleBASCOM-AVR : LCD 20*4, C2004A, on i2C. E, E1, E2 signals and PCF8574 prob :...
I find a mistake in library, it was in first version and migrate to all others: In 3 phases of sending E changes 0>1>0, RS for data too 0>1>0 (but must stay 1), RS for instructions stays...
View ArticleShare your working BASCOM-AVR code here : RTC, the last word on : REPLY
Neil, as i understood, you are having more than one of this device at work. So, if there is only one making trouble, it is hardware.... It's not only the PCB... 3 connected serial and 1-wire can make...
View ArticleAVR-DOS : SPI SD card problem solved : NEWTOPIC
Just wanted to share this in case anyone else runs in to this problem, its been bugging me for days. When connecting to any SPI slave device, such as an SD card, your SS pin must be configured as...
View ArticleAVR-DOS : AVR-DOS max : NEWTOPIC
Hi Anyone know what the maximum number of files are in the root of an SD card for AVR-DOS to be able to handle? And maximum file size for a text file to open for append?
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