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5 volt power feasibility
I'm looking in creating a project using the atmega32u2. This design will have multiple uses. But in all cases it will run off power from various gaming console controller ports....
Tue. Feb 13, 2018 - 06:52 PM
Operating Voltage Range
If a chip (atmega32u2) says Operating Voltage Range (V) is 2.7 to 5.5. Does this mean using an external oscillator will remain constant in that range? That is to say 3.3 will not...
Mon. Feb 12, 2018 - 07:58 PM
atmega32u2 HID bootloader.
As I understand it there are 3 versions of the bootloader for this device (HID, DFU, and CDC). I ordered a  breakout board from the net and when I connected it via USB an...
Fri. Dec 22, 2017 - 04:50 PM
D.I.Y atmeg board overflow.
I have a board overflow (500 units) I'm looking to rid of. (chip not included)   1) USB ready if using v-usb 2) all of port C and B exposed to pins.  As well as Port D...
Wed. Dec 20, 2017 - 01:17 AM
help with some ASM
What I'm looking to accomplish here is a bit of a hack to the v-usb project. Normally the assembly will return on interrupt. I need to make it return regardless if the interrupt...
Fri. Nov 10, 2017 - 01:31 PM
atmelstudio will not create file make says to.
I'm building a project with the following make file and it will not create the usbdrvasm.o file.  The other S file is created fine.  If I drop this file in the folder...
Wed. Nov 8, 2017 - 01:12 AM
need help with clamping function.
  X and Y data is a 7 bit -80 0 80 with a sign on the 8th. but the data typically is -60 to 60.  I need to expand and move to 0-255 with clamping. Loss of data is ok....
Sun. Oct 22, 2017 - 03:48 AM
compilers are giving different results
I wrote an array mapper and the ending result is bugged. I tried the code with an online compiler and the code works.  I'm trying to figure out what is wrong. I know there is...
Thu. Oct 19, 2017 - 02:17 AM
spi mosi always make first bit hi.
I have an spi interface set up on my stmega328 that works well for the most part.  In one case when using it with a device the first bit is held hi in every case.  ...
Sun. Oct 8, 2017 - 08:41 PM
Questions about usb over the wire.
I'm trying to trouble shoot a USB protocol at signal level and I'm pretty new to how that works for USB. I have more then my head full of docs about the software implementation. I...
Thu. Aug 31, 2017 - 03:17 AM
can inturups set flags for other code on a mega8?
Just a little misunderstanding here I want to clear up.   If I have a function that is called on an interrupt.  Can I set a flag that can be read in another part of the...
Thu. Aug 31, 2017 - 02:22 AM
vusb - usb stall errors rondomly on ports.
I have built a project on an atmega328p chip with the well known v-usb firmware driver (latest version)I have been noticing USB stall errors with usbLyzer. I have noticed a few...
Tue. Aug 22, 2017 - 03:10 AM

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