Type in the full discussion title or a part of it.
Discussion Title Created date
Smart people: Hows does a compiler decide in what order to compile?
Whilst messing around with some test code the other day, i struck me that i have no idea how a complile decides in what order to compile the files it is pointed at?   It must...
Saturday, 9 April 2016 - 11:00
Setting BOOTRST fuse doesn't stop application code running?
I'm playing around with bootloaders (somehow, despite using AVRs for over 8 years, i've never yet used one.......) and i've found some, to me, unexpected behavoir:    ...
Tuesday, 5 April 2016 - 16:22
"Protecting" programming pins? (ISP)
I've just had an Atmega fail on me, with the reset line going low impedance (and causing the device to stay in reset, rather than run)   I was updating the devices program...
Friday, 20 November 2015 - 18:57
SPI master with multiple slaves - elegantly handling the CS pins?
Say i have an AVR that is acting as a master on an Spi bus with multiple, identical slave devices (not important what those devices actually are).   Generally, to talk at a...
Wednesday, 18 November 2015 - 19:07
What do i need to know to design a Differential voltage front end for AVR ADC?
As per the title really.   I want to design a number (2 or 4 or 8 possibly) of truly differential inputs to the the normal AVR single ended inputs.   At a basic level i...
Tuesday, 22 September 2015 - 20:16
Generate 8 analogue reference voltages for 8 comparitors?
I have 8 analogue voltages 0-5 being read by 8 ADC's on an Mega64.  I also want to be able to trigger interupts at software defined voltage levels on those inputs.  To...
Thursday, 17 September 2015 - 21:50
Simulation of AVR ADC?
As far as i can tell, from datasheets and google, the input impedance of an AVR ADC input is around 100KOhm (at dc??)   But what about it's capacitance and what about when...
Thursday, 3 September 2015 - 12:21
Protecting "broken out" USART lines from the real world.
I have an application where i am considering making the USART lines available on that devices main I/O connector.  The host will not ever use these lines directly (...
Saturday, 30 May 2015 - 19:01
Hardware buffers for digital IO?
Say you have an AVR in an embedded device, and that AVR needs to get some digital signal from the outside world.  Chances are, the voltage levels in the outside world are...
Friday, 3 April 2015 - 18:53
AS4 -> AS6 : .eep output file differ with same source code?
Ok, i'm very new to AS6, as i'm still stuck in the dark ages and use AS4.  However, i gave some source code (.c & .h) files to someone running AS6, and when they build...
Wednesday, 25 March 2015 - 19:22
"External" USART at TTL voltage levels between two devices?
I have an automotive control device, which usually takes all it's commands via CAN.  No issues there.  However, i have been asked if we could add an external input...
Monday, 23 March 2015 - 19:49
PC software for In System Calibration?
I was wondering what software people are using for In System calibration of their embedded projects?   At the high end, there are of course "Industry standard" calibration...
Sunday, 22 February 2015 - 22:31

Pages