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Fixed a bug found by Moritz Straube - writing to the internal flash would lock up contikimac. The problem was due to the IFG1 being reset to zero before writing to flash.

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This commit is contained in:
adamdunkels 2010-11-15 21:52:54 +00:00
parent 125656d3cd
commit 4fac3037e0
1 changed files with 11 additions and 10 deletions
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21
cpu/msp430/flash.c
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@ -29,7 +29,7 @@
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE. * OF SUCH DAMAGE.
* *
* $Id: flash.c,v 1.2 2007/11/17 10:28:04 adamdunkels Exp $ * $Id: flash.c,v 1.3 2010/11/15 21:52:54 adamdunkels Exp $
* *
* Author: Adam Dunkels <adam@sics.se> * Author: Adam Dunkels <adam@sics.se>
* *
@ -51,27 +51,28 @@ static unsigned short ie1, ie2;
void void
flash_setup(void) flash_setup(void)
{ {
/* disable all interrupts to protect CPU
/* Disable all interrupts. */ during programming from system crash */
_DINT();
/* Clear interrupt flag1. */ /* Clear interrupt flag1. */
IFG1 = 0; /* IFG1 = 0; */
/* The IFG1 = 0; statement locks up contikimac - not sure if this
statement needs to be here at all. I've removed it for now, since
it seems to work, but leave this little note here in case someone
stumbles over this code at some point. */
/* Stop watchdog. */ /* Stop watchdog. */
watchdog_stop(); watchdog_stop();
/* DCO(SMCLK) is 2,4576MHz, /6 = 409600 Hz /* DCO(SMCLK) is 2,4576MHz, /6 = 409600 Hz
select SMCLK for flash timing, divider 5+1 */ select SMCLK for flash timing, divider 5+1 */
FCTL2 = 0xA5C5; FCTL2 = 0xA5C5;
/* disable all interrupts to protect CPU
during programming from system crash */
_DINT();
/* disable all NMI-Interrupt sources */ /* disable all NMI-Interrupt sources */
ie1 = IE1; ie1 = IE1;
ie2 = IE2; ie2 = IE2;
IE1 = 0x00; IE1 = 0x00;
IE2 = 0x00; IE2 = 0x00;
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/