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ADC question
I've just been reading the manual section on the ADC for the atmega AVR's (the mega8535 part, but most of the details are the same as the atmega16/32 parts). The description for...
Wednesday, 26 January 2011 - 15:00
#if conditional fails parse
I'm trying to optimize some code in Peter Fleury's LCD library. The following #defines are in the lcd.h file: #define LCD_PORT PORTA /**...
Monday, 24 January 2011 - 21:25
Atmel MAC intra pan bit cleared by mac?
I have an application based on the Atmel MAC. I've created a class of stations that can repeat messages from other stations toward the coordinator. I've done this by having the...
Friday, 21 January 2011 - 21:40
Linker scripts
Just discovered something new I didn't know about how winavr works. The directory ..\avr\lib\ldscripts contains various script files to control the linker. Normally one doesn't...
Tuesday, 18 January 2011 - 18:56
using the avr AD hardware.
I'm looking for some info on how to use the ADC ports on an ATmega32 chip. I'm not sure about the merits of single ended vs differential, but what I really need to know is how to...
Monday, 17 January 2011 - 15:15
Register use by C functions question
I've read the guide on register usage by C functions, but still have one question. Registers r2-17 and r28-r29 are assumed to NOT be clobbered by calling a function, however...
Thursday, 30 December 2010 - 20:25
No .map file produced....
I downloaded the latest MAC software from Atmel and tried to build one of the examples. No .map file is produced and I can't figure out why. Everything in the makefile looks...
Tuesday, 28 December 2010 - 15:46
build tools from script, errors
I built the avr tools on Linux (latest Ubuntu LTS) and while it seems to have built, I have problems compiling. avr-gcc seems to be present.... $ avr-gcc -v Using built-in specs....
Thursday, 16 December 2010 - 20:09
clock issue with at86rf212/atmega644 mac package
The TAL examples in the Atmel MAC package have a function in the TAL init code that sets the clock source for the PAL clock (TC1) to external when then transceiver is awake....
Tuesday, 14 December 2010 - 21:01
cksel bits = 0011 on atmega644pv?
According to the data sheet on the Atmel atmega644pv the cksel fuse bit combination of 0011 is reserved. cksel 0010 selects the internal 8mhz RC oscillator. However, looking at...
Friday, 10 December 2010 - 16:41
Can't set breakpoints in assembler source modules
I can't seem to set any breakpoints in assembler source modules 'compilied' with Winavr under Avrstudio. I have included the '-g' option for both the 'cflags' and 'asmflags' that...
Thursday, 9 December 2010 - 15:32
program address space
I'm trying to add a checksum of the application to my bootloader. I think that the function pgm_read_byte_far(uint32_t addr) will allow me to read ANY byte in the xmega 128K (...
Tuesday, 7 December 2010 - 22:31

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