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FatFs and disk removal
I can not recall having seen previous questions about this.   I have a data logger with a removable SD card. I have connected the "disk present" line of the socket to an...
Thu. Feb 21, 2019 - 01:44 PM
how to use the AVR watchdog
I have scanned through the first number of tutorial pages, and did a google search on avrfreaks on using the watchdog, but I come up empty  on a tutorial on watchdog usage....
Sun. Feb 3, 2019 - 04:33 PM
Reading Target voltage fails
It might be a default setting that is wrong, but there is something strange happening. I have encountered this both at home using an AVR-ISP MKII (AVR8 bit processors) and now at...
Wed. Jan 16, 2019 - 09:28 AM
FatFs not able to write to the mmc card
I have downloaded the latest version of the fatfs fsample zip file. I have added code to use the SPI peripheral, and also make sure the mmc is powered. Disk initialization goes ok...
Sat. Apr 14, 2018 - 01:51 PM
having bootloader but not starting through it
I have a strange idea, but have totally no experience with bootloaders so wonder if it can be done at all. I want to develop a datalogger that I can use to track were we have been...
Thu. Apr 12, 2018 - 06:44 AM
FatFS capability to rename a filename
It has been a long long time since I have played with FatFs but I think I am going to start again playing with it in not to long a time. I am making a simple datalogger and as...
Mon. Mar 19, 2018 - 07:03 AM
using directory structure for file keeping
Up till recently I only have done smallsih projects on smaller processors, So not a lot of code was present and also not to many files. I recently started on something bigger ("...
Tue. Jul 4, 2017 - 12:22 PM
Studio 7 Crash on invalid User experience package
After a hefty Studio crash causing a blue screen of death. It does not want to start properly. I keep getting the message below:   when looking in the log file that is...
Fri. May 12, 2017 - 02:58 PM
missing bits in io decriptors.
Hi I am using Atmel studio 7 1417. I am using a ATmega1284P I am trying to get the USART in SPI master mode. I copied the following code from the datasheet: void USART_Init(...
Thu. Mar 23, 2017 - 08:25 PM
Make and use your own current transformer
I have seen a number of topics on current transformers, but I would like to make one myself.   for a 1 off project I want to make a current transformer that can measure up to...
Sat. Oct 10, 2015 - 11:46 AM
timer peripheral and pin register
yet another timer pwm question actually a couple of questions in fact. I use a Amtega168. Timer1 is set to CTC mode with tops being ICR1. This as I wan t to use both OCR pins for...
Tue. Jul 22, 2014 - 06:02 AM
controlling PC Fan
I would like to know if anybody has experience with controlling the speed of a PC power supply fan. I know that effectively there is a controller in the fan to let the brushless...
Mon. Jun 23, 2014 - 01:00 PM

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