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I2C + (collision avoidance sheme)
I want to hack the behavior of the I2C bus to allow dynamic addressing of slaves by a master (long story).  Without going into the details, my scheme depends on Slave devices...
Tuesday, 28 April 2015 - 04:13
"PC" Tool for bootloaders
For a new project, I need to use a bootloader in my AVR.  While I have not done that before, there appears to be a ton of information available online (including what appears...
Friday, 24 April 2015 - 22:17
Document comments for functions
My apologies for a dumb question, but I can't seem to figure this out. How do I arrange a comment by a function definition/declaration to get it to "appear" when the user starts...
Friday, 23 May 2014 - 19:50
Variadic Function Question (uint8_t vs. uint16_t)
As I understand it, the va_arg macro does not support 8 bit arguments. Is this true? The way I "fixed" the warning is depicted below (inside the else if). Is this correct (i.e...
Friday, 23 May 2014 - 19:12
Shorting AVR pins to ease layout
Mods: apologies if this should be in general electronics. Please feel free to move it there if you think it is appropriate. I am designing a small prototype PCB. To keep costs...
Monday, 19 May 2014 - 21:28
IC with really low input voltage requirement
While perusing available options for a little SRAM chip (SPI Interface) to use on my AVR project, I came across this: http://ww1.microchip.com/downloads/en/DeviceDoc/20005142B.pdf...
Monday, 19 May 2014 - 16:57
Discrepancy between data sheet/errata/Tool chain (?)
The subject field is character limited... This pertains to the SAMD20 MCU. I would pose this question at the AT91 forum, but I am still waiting for a response on a different...
Thursday, 15 May 2014 - 21:47
How to handle a bad serial protocol
I am interfacing to a third party peripheral via a UART. There is a list of commands that I can issue, each of which has an expected response. The responses are of different...
Tuesday, 13 May 2014 - 16:28
Best way to inline a function?
Warning: my application has to do with arm-gcc (AVR Toolchain), but I believe the question is generic to gcc in general. I have a small function that I want to inline to reduce...
Tuesday, 6 May 2014 - 16:18
Radio Suggestions
I am currently performing a survey to see what kind of radio options are out there, and thought that, as part of my search, I would trawl the expertise here. I am looking for some...
Monday, 28 April 2014 - 22:21
Where to place break point to capture register state?
Disclaimer: total tyro at using debugger here. My UART code is not working (i.e., not receiving characters in terminal window). I have used the EDBG on my XPlained board (via AS 6...
Friday, 25 April 2014 - 17:12
SAMD20 Programming Question (ARM-GCC)
First attempt to really program a SAMD20 using arm-gcc directly (not using ASF). I apologize if any of the following seems like a dumb question. Starting out with something [that...
Wednesday, 16 April 2014 - 21:08

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