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Discussion Title Created date
getting avr-gcc to 4.8.3 (trying to fix a bug with IRS)
I was writing pin change interrupt code and ran in to this   https://www.avrfreaks.net/forum/f...   I'm not sure how to tell what version of avr-gcc, if I'm using avr-...
Wednesday, 22 July 2015 - 02:36
help with ASM branching.
I need to branch based on the status of bits but I need to get the timing right. The problem is I need more then one line so sbrc is not going to work. I figure I could do what I...
Tuesday, 21 July 2015 - 03:57
Help with understanding the spi
I have some example code that sets the following bits.   SPCR = (1<<SPE)|(1<<MSTR)|(1<<SPR1)|(1<<SPR0)|(1<<DORD)|(1<<CPHA)|(1<<CPOL...
Wednesday, 1 July 2015 - 01:37
sending twos complement to a unsigned char.
From what I have read online you need to check the sign bit, then if negative invert and add 1. For positive it's good as it is. Though in working with bit logic not a day goes by...
Thursday, 18 June 2015 - 21:55
Verify that bootloader exists.
I flash a bootloader to an atmeaga328 with BOOTRST, and then load my firmware with a flash tool via USB. What I'm looking for is a way to verify (in code) that the boot loader...
Sunday, 14 June 2015 - 18:03
Help working with ADB (Apple Desktop Bus) protocal.
I have created an interface (host) for ADB peripherals. At this time I only have one device (game pad with mouse) and quite a bit of documentation on ADB.  I'm sending the...
Tuesday, 2 June 2015 - 22:27
using output_bit on an avr (serial communication?)
*** for anyone new to this post see post 22, as I'm returning to this post instead of making a new one***           I have a device in which I wish to...
Tuesday, 19 May 2015 - 01:10
Atmega328 add serial numbers via USART
I have a project using the Atmega328 and as I understand it, it has a UART. The factory I use to manufacture my product says the method they use to add a serial number does not...
Friday, 24 April 2015 - 13:41
Job offer in orlando, fl (Firmware Engineer)
I have no idea where to put this but I do see job offers are on the forums here.  I work with a company that deals with vehicle ECU's. We just merged and that always changes...
Monday, 13 April 2015 - 18:10
Can one avr set a pin low so that another can detect its state?
I have an atmega 328p that sets the portc to input and all pins hi. By shorting the pins to ground I can detect the condition of each pin. Now I want to use another atmega328 to...
Saturday, 7 March 2015 - 23:00
Windows decided to melt my avrisp driver.
I have been using a new laptop for a bit now with no issues. The other day Windows decided I no longer have the right to use my arv-isp and claimed the driver was missing files....
Thursday, 5 March 2015 - 21:29
Need some help with 2 base math.
I working with a device that sends a range from -255 to 255, it uses two bytes little endian as is seems with one byte as the value  and the other with 0xff for negative...
Tuesday, 17 February 2015 - 21:52

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