Hi all,
I am interested in having an interrupt from a pin on the internal extension
header (the one the ECG/Gyro boards etc slot into). Looking at the hardware
guide<http://www.btnode.ethz.ch/pub/uploads/Projects/SHIMMER_HWGuide_REV1P3.pdf>,
it seems that BSL_TX/RX and Serial CTS/RTS can be used as internal
interrupt lines. Which is great! I did some searching around the tos file
structure, and it looks like the Roving Networks Bluetooth implementation
has some good pointers about how I might achieve this, so I used the
ConnectionInterrupt implementation as a starting template and modified
the AccelECG project accordingly.
I decided to use the BSL_RX pin as the external interrupt pin as it was out
of the way, I suppose. It's pin #10 on the header, and pin#22 (port2.2) on
the MSP430. It was an arbitrary choice to be honest, but I don't think it
should matter much.
My test application should toggle the LEDs when an interrupt has been
detected. The code compiles and builds fine. But the interrupt isn't
working yet. I was wondering if someone here could verify that I'm going
about this the right way. Am I missing some configurations?
Thanks.
Niall
....
In AccelECGAppC.nc I added the following to the implementation:
> components HplMsp430InterruptC;
> AccelECGC.interruptTest -> HplMsp430InterruptC.Port22;
In AccelECGC.nc I added the following three snippets:
> uses {
> // ... as stock
> interface HplMsp430Interrupt as interruptTest;
> }
void init() {
> // ... as stock
call interruptTest.edge( TRUE );
> call interruptTest.clear();
> call interruptTest.enable();
> }
async event void interruptTest.fired() {
> ledsOn ^= 1;
>
> if ( !ledsOn ) {
> call Leds.led0On();
> call Leds.led1On();
> } else {
> call Leds.led0Off();
> call Leds.led1Off();
> }
>
> atomic call interruptTest.clear();
> }
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