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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...
Thursday, 31 August 2017 - 02:22
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...
Tuesday, 22 August 2017 - 03:10
use pinchange int. only
I'm having a bit of trouble understanding how to control interrupts. As I understand it.   cli - disables global interrupt flag. sei - enables global interrupt flag.  ...
Tuesday, 18 July 2017 - 02:32
math not making sense?
I ran a piece of code in a c compiler.   // Example program #include <iostream> #include <string> int main() { unsigned char reportBuffer[3]={0,0x80,0...
Sunday, 2 July 2017 - 19:54
atmega328p flash device no isp/boptloader pure usb.
I was reading up on the flash and how the 328p memory is laid out. Being there are different section is there any feesable way to manage these sections and allow overwriting while...
Friday, 9 June 2017 - 15:35
v-usb and usbFunctionWrite
I'm not sure this is specific to v-usb or not. Though in general, if I'm going to transfer near 200 bytes of data to a device from the host, will I need to suppress anything? The...
Monday, 29 May 2017 - 03:37
auto chip for can project.
We are looking closely at the STMicroelectronics STM32F205RBT6 for a new ARM7 based auto board design.  I see atmel has some options and  I'd much prefer atmel.  ...
Wednesday, 24 May 2017 - 15:54
setting a define basedon eeprom?
Was curious  the other day, specifically mega8 but any family I suppose? Is there a way to set a define or specifically a usb PID from eeprom? I have a unique situation where...
Tuesday, 23 May 2017 - 12:53
Any one have experaice with arm (MCB2370 + LPC2361)
Looking to build a device with the LPC2361 chip and plan on ordering the MCB2370  dev kit. I'm just wondering what IDE one would use do develop the firmware in.
Monday, 15 May 2017 - 15:05
speed confusion.
I have a 16mhz external clock on a at90can64 that runs this code. The fuse bit are set to ext 16 and the make file respectively.    while(1)    {  ...
Wednesday, 26 April 2017 - 12:08
File contents does not map to any valid device memory
So as I understand this error it has to do with my linker script. I'm working in avr studio 6 and I'm a bit lost in it. Normally I can specify my start address (guessing that is...
Tuesday, 25 April 2017 - 17:37
Getting familiar with at90can's
I picked up a board that has the at90can64 on it and also a MCP2515. I thought the at90can64 does CAN alone? I'm not having much luck finding can libraries. I tried the...
Tuesday, 25 April 2017 - 12:59