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jump to app does not alway work with Lufa.
I have an Atmega32u2 using LUFA and wrote simple jump to bootloader/app reboot function.   static void reboot( char BL) { USB_Disable();// If USB is used, detach from...
Monday, 5 July 2021 - 23:43
timer ovewflow with no isr.
Chip: Atmega32u4 / 16MHz       I'm trying to monitor my overflow bit but was wondering if that would work without setting interrupts? In my current design I must...
Friday, 28 May 2021 - 23:32
help with data in, numbers do not look right to me?
  I have a USB device that sets up the following physical and logic ranges. 0x16,0x01,0xFF, // Logical Minimum FF01h (-255d) 0x26,0xFF,0x00, //...
Wednesday, 5 May 2021 - 13:02
usewing pgm_read_byte with mega328
I have a 32k chip that should allow me to read my flash via pgm_read_byte I'm pretty sure?     I tried something like this   unsigned char *ptr PROGMEM = 0;  ...
Monday, 26 April 2021 - 22:36
HWB confusion.
I have an atmega32u2 and use the HWB to flash firmware. Before I had my code written to it, all I had to do was bring it low and release. After flashing code that is not enough, I...
Sunday, 18 April 2021 - 01:39
use an atmega32_u2 to monitor a battery
Doing some reading I found that the u2 has analog comparators instead of Analog-to-digital converters that I have used before. In looking in to this I found that a comparator with...
Friday, 9 April 2021 - 01:36
Can ASM clobber a static varable in another file?
Still new to ASM here but learning faster then my brain wants to allow.   I have another strange situation were ASM from file X corrupts a variable in file Y.   In file...
Thursday, 25 February 2021 - 13:19
Losing data in ASM
Decided to just go back to solid code and start over, issue didn't come back, disregard all of this.         I know ASM needs to be thought out well and if...
Tuesday, 23 February 2021 - 15:20
Help with ASM, and compare and rol.
I'm missing something fundamental here, looking for some advice.   I have a byte where I need to check the last bit for 1 or 0 and choose a path, then shift that bit off....
Monday, 22 February 2021 - 19:51
Learing the wonderful art of ASM but still need help.
I'm learning but sometimes I hit a brick wall, here is one of those walls.   This does not work as expected. " dec r18 \n" "...
Friday, 19 February 2021 - 16:10
help with ASM.
I'm trying to understand and use a piece of code that reads a Wave form.   The wave form looks like so     It works fine for what it is but has a bit of an...
Saturday, 13 February 2021 - 21:35
Looking for help with i2c(TWI).
I have a good grasp on how i2c works but need help with detail to troubleshoot my application. I love hardware base protocols when they work but when they don't it's a pain to fix...
Thursday, 21 January 2021 - 22:13

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