HI Guys,
Been struggling wth this all day.
Can't seem to get an external pin to trip the Capture logic.
Everything works great if I just do simple compare mode... switching to capture is eluding me ...
Anyone see what I am doing wrong?
I expect to see an LED toggel for each event.
Note: I don't see Timer B >> TBCCTLO >> COV change state in the CCS registers window - should I?
(I run the app for a while, pause it, look at the registers, restart, etc)
MSPF2274
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WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P1DIR |= 0x01; // Set P1.0 to output direction TEST SIGNAL
P2DIR |= 0x01; // Set P2.0 to output direction TEST SIGNAL
// Setup Clock Module
BCSCTL1 = DIVA_0; // VLO Clk Divider
BCSCTL3 = LFXT1S_2; // Select VLO clock to ACLK
// Make sure P4.3 is pulled up and routed to module
P4REN |= 0x18; // Pullups on 4.3 and 4.4
P4SEL |= 0x18; // Rout Capture inputs to module
// Timer B Control Register setup
TBCTL = TBSSEL_1 + MC_1; // ACLK, upmode
// Timer B Capture/Compare Setup
TBCCTL0 = CM1 + CCIS0 + SCS + CAP + CCIE; // Falling edge, CCIxB (P4.4), Sync, Capture_Enabled, interrupt enabled
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0 w/ interrupt
}
// Timer B0 interrupt service routine
#pragma vector=TIMERB0_VECTOR
__interrupt void Timer_B (void)
{
P1OUT ^= 0x01; // Toggle P1.0 using exclusive-OR (Drive LED)
P2OUT ^= 0x01; // Toggle P1.0 using exclusive-OR (Drive IO, inverted)
}
