2014-05-04 22:04 GMT+02:00 Tomek Lorek <tlo...@gmail.com>: > 1. Possibly the main reason my code did not work was using > __asm__ __volatile__ ("movx #0, @%0"::"r"(flash)); > instead of > __asm__ __volatile__ ("movx.b %1, @%0":"=r"(flash):"m"(Byte)); > > But I don't understand why the latter works and the first doesn't (the > 1st one causes "tilib: MSP430_State: Internal error (error = 68)" in > mspdebug right after stopping the program execution.
Just checked the flashdump diff right before and after executing the program - "movx #0, @%0"::"r"(flash))" variant messed up the flash bank A from where I was running the code and it erased 0xc400 instead of 0x1c400. Do you have any idea why? The code is: unsigned long flash_addr = 0x1c400; unsigned int flash; unsigned int sr; FCTL3 = FWKEY; // Clear Lock bit while (FCTL3 & BUSY) ; FCTL1 = FWKEY + MERAS; // Set MERAS bit __asm__ __volatile__ ("mov r2,%0":"=r"(sr):); _DINT(); __asm__ __volatile__ ("movx.a %1,%0":"=r"(flash):"m"(flash_addr)); __asm__ __volatile__ ("movx #0, @%0"::"r"(flash)); // <- the line that is under discussion __asm__ __volatile__ ("mov r2,%0":"=r"(sr):); // save SR before disabling IRQ __dint(); while (FCTL3 & BUSY) ; // test busy FCTL1 = FWKEY; // Clear MERAS bit FCTL3 = FWKEY + LOCK; // Set LOCK bit ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available. Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Mspgcc-users mailing list Mspgcc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mspgcc-users