[Launchpad]ボタンの振れテスト
8084 ワード
LaunchPadボタンの振れ止めテスト、推奨タイミング方式
1 #include <msp430g2553.h>
2 #define TYPE 0 //0 1
3 void main(void)
4 {
5 WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
6 BCSCTL1 = CALBC1_1MHZ; // Set range
7 DCOCTL = CALDCO_1MHZ;
8
9 BCSCTL2 &= ~(DIVS_3); // SMCLK = DCO = 1MHz
10 P1DIR = 0x01; // P1.0 output, else input
11 P1OUT = 0x08; // P1.4 set, else reset
12 P1REN |= 0x08; // P1.4 pullup
13 P1IE |= 0x08; // P1.4 interrupt enabled
14 P1IES |= 0x08; // P1.4 Hi/lo edge
15 P1IFG &= ~0x08; // P1.4 IFG cleared
16
17 _BIS_SR(LPM0_bits + GIE); // Enter LPM4 w/interrupt
18
19
20 }
21
22 // Port 1 interrupt service routine
23 #pragma vector=PORT1_VECTOR
24 __interrupt void Port_1(void)
25 {
26
27 # if(TYPE)
28 //----------------------------------------
29 //
30
31 volatile unsigned int i;
32 P1IFG &= ~0x08; // P1.4 IFG cleared
33 for(i=500;i>0;i--);
34
35 if(!(P1IN & 0x08))
36 P1OUT ^= 0x01; // P1.0 = toggle
37
38
39 #else
40 //-----------------------------------------
41 //
42
43 P1IFG &= ~0x08;
44 WDTCTL = WDT_MDLY_32; // Set Watchdog Timer interval to ~30ms
45 IFG1 &= ~WDTIFG;
46 IE1 |= WDTIE;
47
48 #endif
49
50
51 }
52
53 # if(!TYPE)
54
55 #pragma vector=WDT_VECTOR
56 __interrupt void watchdog_timer(void)
57 {
58
59 IE1 &= ~WDTIE;
60 IFG1 &= ~WDTIFG; /* clear interrupt flag */
61 WDTCTL = WDTPW + WDTHOLD;
62
63 if(!(P1IN & 0x08))
64 P1OUT ^= 0x01; // P1.0 = toggle
65 }
66
67 #endif