Ram overflow for IR remote library

[Chir31 0]

the ir library included in energia when compiled gives the following errors :

 

c:/users/chirag/downloads/compressed/energia-0101e0011-windows/energia-0101e0011/hardware/tools/msp430/bin/../lib/gcc/msp430/4.6.3/../../../../msp430/bin/ld.exe: IRtest.cpp.elf section `.bss' will not fit in region `ram'

c:/users/chirag/downloads/compressed/energia-0101e0011-windows/energia-0101e0011/hardware/tools/msp430/bin/../lib/gcc/msp430/4.6.3/../../../../msp430/bin/ld.exe: region `ram' overflowed by 62 bytes

collect2: ld returned 1 exit status

 

 

i have updated energia tried changes in the cpp files as well Still the same  error occurs  >please help me resolve this error its urgent 

[cde 334]

First, which msp430 are you targeting? If you have the wrong one selected...

 

And remember, that warning is not just about the IR library, but your code + ir library + other libraries. And it's only overflowing by 62 bytes. Try reusing variables if you can, and turn non-changing variables into consts or hard coded values, so they get added to Data, not Ram.

[roadrunner84 466]

The easiest way to run out of RAM is to have large arrays. Do you have arrays defined in your code?

An easy way to reduce RAM size (as @@cde already told) is to change non-changing variables (arrays in particular) to constants. For example:

char IRcodes[20][6] =
  {{0x00, 0x00 0x01, 0x00, 0x00, 0x00},  // '0'
   {0x00, 0x00 0x02, 0x00, 0x00, 0x00},  // '1'
   {0x00, 0x00 0x03, 0x00, 0x00, 0x00},  // '2'
   {0x00, 0x00 0x04, 0x00, 0x00, 0x00},  // '3'
   {0x00, 0x00 0x05, 0x00, 0x00, 0x00},  // '4'
   {0x00, 0x00 0x06, 0x00, 0x00, 0x00},  // '5'
   {0x00, 0x00 0x07, 0x00, 0x00, 0x00},  // '6'
   {0x00, 0x00 0x09, 0x00, 0x00, 0x00},  // '7'
   {0x00, 0x00 0x0A, 0x00, 0x00, 0x00},  // '8'
   {0x00, 0x00 0x0B, 0x00, 0x00, 0x00},  // '9'
   {0x00, 0x00 0x01, 0x00, 0x03, 0x00},  // 'Up'
   {0x00, 0x00 0x02, 0x00, 0x03, 0x00},  // 'Down'
   {0x00, 0x00 0x03, 0x00, 0x03, 0x00},  // 'Left'
   {0x00, 0x00 0x04, 0x00, 0x03, 0x00},  // 'Right'
   {0x00, 0x00 0x05, 0x00, 0x06, 0x00},  // 'Enter'
   {0x00, 0x00 0x06, 0x00, 0x06, 0x00},  // 'Back'
   {0xFF, 0x00 0x07, 0x00, 0x00, 0x00},  // 'Power'
   {0x00, 0x00 0x09, 0x00, 0x01, 0x00},  // 'Vol+'
   {0x00, 0x00 0x0A, 0x00, 0x01, 0x00},  // 'Vol-'
   {0x00, 0x00 0x0B, 0x00, 0x05, 0x00}}; // 'AV'

If you have some array like this, it will consume 20*6 = 120 bytes of RAM!, by prefixing it with the const keyword you replace 120 bytes of RAM by 120 bytes of Flash:

const char IRcodes[20][6] =
  {{0x00 /* and here is the other lot of garbage */ }; // 'AV'

Note that these codes are totally fictional, it's just to illustrate how you might up ending hogging your RAM.