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Microcontroller Programming » MAKEFILE and Problem with String Variables
September 16, 2010 by oldictguy |
I had massive problems trying to output strings variables (or use them altogether!). The guys at AVRFreaks helped me out; http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&p=745183#745183 Use;
Something about "...hex file doesn't contain the string literal's initialization values (they are located in section ".data", and are copied over into SRAM by the startup code)." |
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September 16, 2010 by Ralphxyz |
Did you search the Nerdkit forum for "string variables" I think you will see there has been a lot of discussion on this subject. Do you still have a question? The AVRfreaks guys are great in fact some of us are also AVRfreaks. Ralph |
September 16, 2010 by bretm |
The "-j .data" solution is not the most space-efficient solution. Using PROGMEM strings can often be a better choice when RAM is limited. |
September 16, 2010 by oldictguy |
@bretm I could end up being limited on RAM. Any documentation on how to use PROGMEM, and what the MAKEFILE should look like? @Ralphxyz I didn't search Nerdkits specifically, but I searched AVRFreaks, and half of Google! I probably should have looked here - but didn't realise it was a MAKEFILE related issue - just a general coding issue. |
September 16, 2010 by bretm |
Tutorial or avr-libc manual or Nerdkits forum search or avr-libc reference |
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