硬件环境：MSP430FR4133 LANCHPAD开发板
软件环境：IARV7.10 For 430
源代码：
1 #include "driverlib.h"
2
3 void main(void)
4 {
5 //Stop WDT
6 WDT_A_hold(WDT_A_BASE);
7 while(1)
8 {
9 //设置P1.0为输出，接LED
10 GPIO_setAsOutputPin( GPIO_PORT_P1,GPIO_PIN0 );
11 //设置P4.0为输出，接LED
12 GPIO_setAsOutputPin( GPIO_PORT_P4,GPIO_PIN0 );
13
14 //设置P1.2输入，内部上拉，接按键
15 GPIO_setAsInputPinWithPullUpResistor( GPIO_PORT_P1,GPIO_PIN2 );
16
17 //判断P1.2输入电平（按键按下为低，释放为高）
18 if( GPIO_getInputPinValue( GPIO_PORT_P1,GPIO_PIN2 ) == GPIO_INPUT_PIN_HIGH )
19 {
20 GPIO_setOutputHighOnPin( GPIO_PORT_P1,GPIO_PIN0 );
21 GPIO_setOutputLowOnPin( GPIO_PORT_P4,GPIO_PIN0 );
22 }
23 else
24 {
25 GPIO_setOutputLowOnPin( GPIO_PORT_P1,GPIO_PIN0 );
26 GPIO_setOutputHighOnPin( GPIO_PORT_P4,GPIO_PIN0 );
27 }
28
29 PMM_unlockLPM5();
30 }
31
32 //Enter LPM4 w/interrupts enabled
33 __bis_SR_register(LPM4_bits + GIE);
34
35 //For debugger
36 __no_operation();
37 }
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