How does this code cause undefined behavior in memory alignment?
c,embedded,memory-alignment,iar
You cannot use C structs/unions for storing data protocols or create exact memory maps. This is because a C compiler may insert padding bytes anywhere inside a struct/union except at the very beginning. How this is done, or what values the padding bytes get, is implementation-defined behavior. That is what's...
CC2541 IAR Output
c,embedded,iar,texas-instruments
I found. I post the answer whether other people need it. You can use : puts(const char *); putchar(int); getchar(void); sprintf(char *,const char *,...); vsprintf(char *,const char *,va_list); printf(const char *,...); vprintf(const char *,va_list); (source) After that, run the Debug mode. When you are in debug mode : View ->...
Working with typedef enums in structs and avoiding type mixing warnings
If you really, literally want to initialize all the memory of a struct to 0, then that's spelled memset(&bar, 0, sizeof(bar_t)); That's actually fairly common, and it even tends to work, but technically it's incorrect for what most people actually want. It is not guaranteed to do the right thing...
IAR: Genrate Source files using a pre-build and then add source files to project
Run pre-build once, to generate the source files. Then you can simply add those files to IAR project just like usual source files. You can also add files manually. .ewp file is a XML file. Just add new file element: <file> <name>$PROJ_DIR$\relative\path\to\file.c</name> </file> Or Create file which where you will...
Can iarbuild run in parallel mode?
I had an email from IAR last week New version of IAR Embedded Workbench for ARM Version 7.40 is now available • Parallel build The compiler can now run in several parallel processes to better use the available processor cores in the PC. To control parallel build, choose Tools>Options>Project>Enable parallel...
Incrementation doesn't go further than 0x01 [closed]
c,debugging,increment,microcontroller,iar
@Lundin is correct, I was passing an address of a pointer instead of the pointer itself with: f2(&a[i]); ...
IAR Embedded workbench 6 (MSP430 V5.6) Overriding program start
__program_start: is defined in cstartup.s43. This file can be copied into your project directory and included in your project which overrides the library version. Immediately after __program_start: label the stack pointer is initialized, __low_level_init() is called, and then ?cstart_call_main is called. Around the ?cstart_call_main: label (line 339) is the following:...
On MSP430, what will happen when I dereference a null pointer?
c,pointers,msp430,iar,null-pointer
Not only writing and reading the address 0x0 will not cause a crash or a reboot, it actually a completely legal operation that is often used by MSP430 applications. The initial portion or MSP430 memory map is reserved for I/O ports and control registers: http://en.wikipedia.org/wiki/TI_MSP430#MSP430_address_space In particular, the control registers...
Has anyone implemented __getzone() for IAR Embedded Workbench for MSP430?
Here is my implementation of __getzone(). So now my system time base will be UTC. When the user configures my system I ask them what their local time if the time source is NOT providing UTC. Then when they supply a time sync to my system, the time they supply...
IAR inline assembly using global C variable
The "r" constraint indicates a general-purpose register, so it ends up emitting LDR R0, Rx which is indeed invalid syntax. If you really want to do the actual pointer dereference in the assembly code, either embed the correct syntax directly: __asm volatile( "LDR R0, [%0]\n\t" ::"r"(ptTask_CurrentTask)); Or, better, use the...
Building firmware Patch for embedded applications
c,linker,embedded,firmware,iar
This depends quite a bit on your tool-chain. Here's a possible high-view approach. Compile your library into an executable image, setting your linker to use a particular portion of your flash memory space. You'll probably need a fake/stub entry function for the linker to be happy. Once that is done,...
GCC -D equivalent for iarbuild.exe
To my understanding iarbuild does not support passing such parameters directly. There are two possibilities that were suggested by IAR support and that both work for me (using 7.40.2): 1) Use a preinclude file Go to Project->Options->C/C++ Compiler->Preprocessor Add a preinclude file (e.g. preinclude.h) Now have your build script generate...
Let TeamCity track warnings from IAR-Compiler via command line runner
i solved my problem as follows: I wrote 2 simple parser programs in python: a buildlog parser to get the current build-log snippet which contains the IAR-log and an IAR-log parser which uses regular expressions. Seems a bit complicated and there is maybe a simpler way to do this, but...