Post Created date
Cliff, In Eclipse, there is a dialog in which you enter both micro controller choice and CPU speed. From those choices, it assigns F_CPU to the frequency (in the *.sc file) and...
Monday, 20 May 2019 - 15:46
After you select a new microcontroller and cpu speed, Eclipse may not update the project's parameter (*.sc) file.  Try using the procedure in https://www....
Monday, 20 May 2019 - 15:16
Re-formatting an unrecognised SD card
David,   Were you able to recover the SD cards?  If so, what worked?   Alan
Saturday, 18 May 2019 - 12:35
Thanks for your answer. Yes, I did mean the factory calibration data.  That question has been lingering in the background for a while since I may want to use EEPROM some day...
Thursday, 16 May 2019 - 14:39
Where is OSCCAL and other internal information (uC identification that AVRDude reads) stored?  If in EEPROM, how can we make sure we don't over-write that data....
Thursday, 16 May 2019 - 13:18
Sampling rate + reconstruction question
  jowell88 wrote: If I generate a 20Khz digital sine wave with a microcontroller, outputing each sample at a rate of 44.100Khz, I don't understand how I can get a sine wave...
Wednesday, 8 May 2019 - 13:10
Petit Fatfs compiling trouble
Could not find '_mulughisi3' anywhere but "clust2sect' raised an eyebrow.  Did notice in pffconf.h, you have chosen both FAT16 and FAT32.  Try choosing just one and see...
Monday, 29 April 2019 - 23:48
Petit Fatfs compiling trouble
Didn't avr_mike's advice in post 3 of   (i.e. remove the opening and closing parenthesis) work?  The...
Monday, 29 April 2019 - 23:11
Petit FatFS implementation
Rooney wrote: That worked, sort of.  It didn't work at first but then I found disconnecting the AVR Dragon from SPI and power cycling (resetting doesn't work) the...
Monday, 22 April 2019 - 00:07
Petit FatFS implementation
Rooney,   Got it working today in both the isolated project and the pfsample project.  Only slightly modified the usi.S file for clarity (now renamed susi.S because...
Saturday, 20 April 2019 - 00:32
Petit FatFS implementation
Rooney wrote:   I have the AVR's MOSI pin connected to SD-Card module's MOSI pin, same for MISO.  I had researched this awhile back because I was wondering if...
Monday, 15 April 2019 - 20:59
SD Card 5v to 3.3v level shifting for AVR
  I'm back to post pictures of waveforms for the LC Soft SD Card (one on the right in post 1); however, nothing went as planned.  If you are not interested in the...
Monday, 15 April 2019 - 20:47