Post Created date
Oversampling ATmega16
Steve, Thanks for your response , but first of all, I did not write the routine and much less I am saying it is a 13 bit resolution. I am trying to understand the code as well as...
Thursday, 8 September 2011 - 04:08
Oversampling ATmega16
I've found this thread because I was trying to analyze the following code int AD (void) { int sum=0; uint8_t i=0; /* The AD conversion should not be done during change of...
Wednesday, 7 September 2011 - 20:20
[TUT] [C] Getting SD/MMC card working painlessly with FatFS
John, Thanks a lot I have the correct picture now as I also write the USART routines like in Petit that do the same thing just plain send and plain receive but I always use Bray'...
Sunday, 26 June 2011 - 05:49
[TUT] [C] Getting SD/MMC card working painlessly with FatFS
Js, Thanks, I used Bray's terminal and it has a separated tx rx input display. But, forgive my ignorance on this, how a Hyperterminal feature is related to the USART firmware?...
Saturday, 25 June 2011 - 18:00
[TUT] [C] Getting SD/MMC card working painlessly with FatFS
I've successfully run the Petit FS from Cliff / JS on the Atmega328 Device: atmega328p Program: 8810 bytes (26.9% Full) (.text + .data + .bootloader) Data: 139...
Saturday, 25 June 2011 - 03:55
[TUT] [C] Getting SD/MMC card working painlessly with FatFS
I successfully followed this tutorial in April 2009 using same ucontroller as the OP, I did have just some issues with pull ups, but not a big deal as I posted. Now, based on that...
Friday, 24 June 2011 - 16:13
I2C Problem with ATMega324
It finally was a hardware issue; SCL had a wire going to Reset... :( I've also found out some errors on the I2C sequence ; it was an extra byte reading which prevented the...
Friday, 10 September 2010 - 19:44
I2C Problem with ATMega324
I am thinking that it could indeed be a hardware problem. As I mentioned I am taking the power from the USB; could it be that the i2c is taking too much current and the voltage...
Friday, 10 September 2010 - 04:09
[TUT] [C] Getting SD/MMC card working painlessly with FatFS
Thanks, yes, I think the problem is the pull up . In the faq questions of similar project from Roland Riegel it is mentioned to put a 50k Omhs to 3.3 volts on the DO pin of the...
Thursday, 30 April 2009 - 15:05
[TUT] [C] Getting SD/MMC card working painlessly with FatFS
Davef, Negative, MISO is not anywhere in the original posting. So , the code above is the only reference to it. Perhaps it needs the internal pull up ?
Thursday, 30 April 2009 - 03:21
[TUT] [C] Getting SD/MMC card working painlessly with FatFS
Ok, I finally got it working. It is easier on a dedicated board than using the STK500. I am using a 2 GB Sandisk microSD. As I mentioned, I am using same MCU as in the tutorial...
Wednesday, 29 April 2009 - 14:39
Is this memory allocation issue
Guys, Thanks a lot for the answers, to clarify there is a typo, the loop runs to 256 not 512 , so there is not such overlap. The main problem is as stated by the first reply, that...
Tuesday, 21 April 2009 - 21:26