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EEPROM & EEMEM
Hi all,   I'm modifying and extending an open source AVR app (sd2iec) to work on my slightly re-designed hardware. I have got this working satisfactorally but have a question...
Thursday, 16 May 2019 - 08:43
AVRDUDE + AVRISP2 Setting SPI rate.
Hi all,   Ok what I want to achieve : I have a Mega1284 straight from the factory, I want to set the fueses via avrdude to enable external clock etc, then having set the...
Sunday, 2 July 2017 - 15:12
snprintf in bootloader...
Hi all,   I've found one of the issues I'm having with porting my bootloader to the mega1284, and it seems to be related to the stdio lib.   basically if snprintf, is...
Friday, 30 June 2017 - 21:54
Porting Bootloader M644p to m1284
Hi All,   I'm trying to port the bootloader form my app from a Mega644p to a Mega1284 (non p). I'm using the Atmel command line tools and have the Boot addresses defined in...
Thursday, 29 June 2017 - 18:36
FatFS and directories
Hi all,   My current project is using chan's FatFS to control access to an SD card. This is working well however I want to allow users to save (in a file on the SD card) a...
Monday, 12 June 2017 - 09:51
Struct in flash....
Hi all,   I'm trying to setup a structure array in flash, using  __flash but am running into problems getting it to compile :   Code snippet to illustrate the...
Friday, 5 May 2017 - 13:54
String in flash question.
Hi all   I want to setup a sting in flash to store the time my program was compiled currently I am doing :   #define NOW "compiled at " __TIME__ " on " __DATE__ "\n" #...
Thursday, 9 March 2017 - 10:01
Adding checksum / crc to binary firmware.
Hi all,   I'm using WinAVR updated with the tools from AVR studio as detailed here : https://www.insidegadgets.com/20...   In my project I have a Mega664, which is...
Tuesday, 21 February 2017 - 10:07
Mega88 external int question.
Hi All, One of my current projects is a ps/2 to quadrature converter, this is mostly working thus : I have the PS/2 data line connected to PD4 and the clock line connected to PD3...
Thursday, 14 August 2014 - 10:53
Replacing NiCd with NIMH in battery backup circuit
Hi All, I'm re-implementing a circuit to maintain the clock on an old 8 bit micro, the circuit as originally designed used a 3.6V NiCd battery. Since NiCd batteries are almost...
Wednesday, 14 May 2014 - 12:56
AVRISPv2, Win7 64 and AVRDUDE
Hi all, I'm trying to program a Mega644 using the version of AVRDUDE installed with WinAVR 20100110. I recently (about 6 months ago) upgraded my main machine to Windows 7 64 bit....
Sunday, 5 May 2013 - 13:47
Compiling for multiple families.
Hi all, I have some code that uses interrupts that is written for the mega164/324/664/1284. I want to port this to run on the mega16, as the chips are pin-compatible. However I...
Monday, 3 September 2012 - 12:14

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