On 03/22/2017 10:43 AM, Bob von Knobloch wrote: > On 22/03/17 16:24, David W. Schultz wrote: >> Calling another function from the ISR was what triggers this bad >> behaviour. Especially if the called function is in another file. > Hi David, > my code doesn't call a function in the interrupt, it merely decrements a > count, tests it for zero and, if not, sets a port bit hi or low, then > exits. This uses only R13 which is why I'm surprised that all the others > are 'push-pulled'. Your description also depicts not the best behaviour. > > Bob >
I just took a look at some generated code for a simple timer interrupt and it only saves 5 registers. Just what it used and nothing else. Compiler version is: msp430-elf-gcc (SOMNIUM Technologies Limited - msp430-gcc 5.3.0.219) 5.3.0 Not quite the latest. -- David W. Schultz http://home.earthlink.net/~david.schultz "Life without stock is barely worth living..." - Anthony Bourdain ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Mspgcc-users mailing list Mspgcc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mspgcc-users
