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Discussion Title Created date
Are bitwise operations unsafe?
I've find in some threads some posts saying that it's not good using many |= or &=, because registers are cleared in the way or something like that. Can you elaborate a bit on...
Friday, 27 May 2011 - 11:56
Adc and pin configuration help
Hi guys, a fast question: Do I have to setup adc pins as input? I don't see anything in the datasheet about this.
Tuesday, 24 May 2011 - 14:45
2 Libs: Timers and 24-Hour Scheduler
Since I can't post code on avrfreaks project section (I'm using firefox), I'll share my projects links here: https://github.com/jvalencia80/atmega-timers and https://github.com/...
Friday, 20 May 2011 - 22:40
Looking for a NPN transistor
I need it to be at least 3W power disipation and Ic > 0.5A Do you know a widely used transistor with those specs? It's just for driving 20x20mA led array Thanks
Tuesday, 17 May 2011 - 13:27
Penalty for using 32bit variables?
I'm thinking on using some uint32_t variables, but wanted to know what speed penalty am I getting. Is it 4 times slower doing maths than 8 bit?
Wednesday, 11 May 2011 - 10:38
Register names in several chips
I want to share my code with other AVR freaks, but as now, it just works only on several chips. I wanted to know if exists a table with the name of several registers for each...
Wednesday, 12 May 2010 - 17:44
Port output speed
I've read in the pdf that reading a port takes some cycles, but nothing related about output. How much time does it take? 1 cycle like other instructions?
Monday, 26 April 2010 - 16:51
About atmega128A programming
I've seen that the old atmega128 had ISP support (non jtag), but I can't find ISP support in the new atmega128A Is ISP obsolete? I wanted a 4k+ Ram device with ISP, but can't find...
Friday, 16 April 2010 - 11:28
Small servo shake
Hi, I'm using my own timing library to drive some servos. Currently I'm testing it and it works, but my servo just shakes a very small quantity. Like a tick-tick-tick sound. This...
Tuesday, 13 April 2010 - 15:43
Devel Board recomendation
Do you recommend a cheap/easy but powerfull board for my projects that it PCB pin compatible? I see lots of them... thanks
Monday, 2 June 2008 - 14:19
static keyword problem
I have a simple class called for example MyClass. Now i declare an instance as static within a function. void example() { static MyClass tmp; } This code gives me an error like...
Monday, 19 May 2008 - 20:21