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External Memory, for interfacing with AVRs
Hello guys,   Is there any external memory (EEPROM, Flash, SRAM anything else) which I could interface with ATmega-644p. That said memory should operate from 5Volt logic, and...
Thursday, 2 May 2019 - 17:20
Compilation Failure, "Undefined Reference" ATmega-644p
Hello guys, It looks like there is some kind of compilation failure on my setup. It comes up with following build fail: PS D:\Users\Arhitect\Documents\Project_Physalis\Physalis...
Wednesday, 1 May 2019 - 22:58
Timebase on ATmega644 with Timer-1 16 Bit
dear all, While adding a timebase into my program, I have setup the 16bit timer1 on ATmega644 in normal mode and use prescaler 1024. My CPU is running at 22Mhz. It means that...
Sunday, 28 April 2019 - 19:34
ATmega-644P loop execution and USART timing issues
Hello everyone, It looks like that there are some hardware issues on my setup that confuses me. Therefore discussing here and getting some advises from experienced specialists...
Tuesday, 23 April 2019 - 13:08
Rounding ADC values properly, ATmega328p-PU
Dear all,   I came across to a code snippet recently, which is not quite clear to me. The snippet sources from a program written for ATmega family, and utilizes the onboard...
Friday, 12 April 2019 - 21:44
AVR and H-Bridge erratic behaviour
Dear all,   In current circuit the ATmege-328p is interfaced with the MOSFET H-Bridge (schematic below). The code just runs a simple routine to test the bridge, that is,...
Monday, 17 December 2018 - 09:46
Avrdude and AVRISP MK-II combination
Dear all, It looks like I'm having trouble adding my AVR ISP Mk-II programmer to my Makefile. See below. ## If you've got multiple programmers that you use, ## you can define...
Thursday, 15 November 2018 - 13:59
Programming fuses, AVR speed_check possible?
Dear all, To gain some extra speed for the ATmega644p-AVR, I added an external Crystal of 22 MHz with 22 pF capacitors to AVR. Although I am quite unfamiliar to fuse bits and...
Tuesday, 13 November 2018 - 23:40
C language question/ printing functions
Hello guys, There is a bit of a question mark inside of me related to this chunk of code. In function transmitByte(.................) what >>>'0'<<< this is...
Monday, 12 November 2018 - 09:54
AVR's RX-TX communication issues (USB-Serial-TTL)
Dear all, It looks like I'm in trouble and need assistance. The AVR (ATmega-644p) on my desk is connected through TTL>>RS-232 bidirectional adapter to a D_tech USB>>...
Thursday, 8 November 2018 - 12:27
DIP parts Market status for ATMEL ATmega MCU's
Dear all, it looks like the user friendly DIP ATmega MCU's are becoming obsolete here in Europe. Not considering the ones produced in China, which I never have used so far and it...
Monday, 29 October 2018 - 12:35
Timer/Counter0 overflow and timebase relation
Hello everyone, maybe the question is a bit trivial but is there any formula to calculate the time from timer overflows? In simple case when we run AVR at 8MHz and we have the...
Friday, 26 October 2018 - 11:26

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