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Benchmarking programming time
Hi, I am programming ATMEGA2561 with 250KB code size. Programming time matters and code updates are frequent. Therefore I have benchmarked programming times just to discover...
Mon. Jul 2, 2012 - 01:18 PM
Using -mcall-prologues generates several problems on AT2561
Using -mcall-prologues generates several problems on ATMEGA2561 One gets hundreds errors like G:\ATMEGA/usart.h(831,1): internal error: out of range error Yet the project is...
Sun. Jul 1, 2012 - 09:42 PM
scanf for floats in Studio 6
Atmel build tools clearly support vprintf party, completely ignoring vscanf's point of view. This policy cannot be tolerated in today's reality. More seriously adding this linker...
Sun. Jul 1, 2012 - 09:49 AM
Any method of limiting generation of ijmp and icall
Hi, for my project the compiler is notoriously generating a few icall and ijmp instructions. they land anywhere, a few of them in switch/case but are unfortunately present in...
Mon. Jun 14, 2010 - 04:01 PM
MCUCSR always null...
Hi, I am trying to discover reset reason in atmega 128, the project is already quite large, playing it from all sides, however int main() { const uint8_t reset_source=MCUCSR;...
Sun. Feb 14, 2010 - 02:34 AM
debugWire and 2 ATMEGA with common RESET
Hi, From the appnotes I see that debugWire needs no pull-up or RESET pull-up not stronger than 10KOHM. I have 2 atmegas (88 and 128) connected and normally exchanging data via SPI...
Wed. Nov 4, 2009 - 04:12 PM
String pooling in gcc with PROGMEM
Hi, My flash is really 99% used and I can save some 20KB by using string pooling in A VERY IMPORTANT ;-) real-time system with interactive console (the strings are variable...
Fri. Oct 9, 2009 - 11:13 PM
How to get rid of unused functions to reduce code size
Hi, in my map file I see 2 versions are present: .text._Z18IsSameDirectionDEGff 0x00005d18 0x70 UAVDEV.o 0x00005d18...
Wed. Sep 9, 2009 - 09:18 AM
Reliability poll about gcc for 2560 - what things to avoid?
Hi, I am migrating froim ATMEGA128 up, preferably to 2560. I remember we were battling recently with the fact that the constructors for the static objects placed above the first...
Mon. Jul 6, 2009 - 12:33 PM
Long-term use of AT25 and FM25: pullups on HOLD and WP?
Hi, In my current design, I use FM25 and AT25. I have tied WP to RESET common with ATMEGAs, added 4053 mux on ISP lines, added pullup on CS, pulldown on SCK, pullup on HOLD. In...
Thu. Apr 30, 2009 - 07:42 AM
Sallen-Key output gain surprisingly stays at unity.
Hi, I am filtering out the output of MPXV5004DP differential pressure sensor. I played a little with 324 and currently MCP6004. MCP is powered by a clean 5V, I have designed a few...
Wed. Apr 15, 2009 - 11:48 PM
4053 multiplexer might limit SPI baudrate between ATMEGAs?
Hi, I am connecting ATMEGA88 and 128. ATMEGA88 is using HEF4053BT that switches its MISO/MOSI between ISP and data bus coming to ATMEGA128. The clocks at worktime are slightly...
Thu. Apr 2, 2009 - 12:45 AM

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