1. Proteus circuit
Keywords：IAR
Reference address：IAR+Proteus7.6 simulates MSP430 MCU PORT1 external interrupt function
2. msp430 program
#include
#define uint unsigned int
#define uchar unsigned char
/
Function: void delay_1ms(void) void delay_nms(uint n)
Function: Delay 1ms Delay Nms
*/
void Delay_1ms(void) //1ms delay function
{
uint i;
for (i=0;i<80;i++);
}
void Delay_Nms(uint n) //N ms delay function
{
uint i=0;
for (i=0;i
}
/
Function: void P1_ISR(void)
Function: external interrupt service function
*/
#pragma vector=PORT1_VECTOR
__interrupt void Port_1(void)
{
uchar i;
for(i=0;i<10;i++)
{
P1OUT=0x01;
Delay_Nms(1000);
P1OUT=0x00;
Delay_Nms(1000);
}
P1IFG = 0x00; //Clear interrupt flag
}
/
Function: void P1_INIT(void)
Function: PORT1 port initialization
*/
void P1_INIT(void)
{
P1SEL = 0x00; //Set to normal I/O port
P1DIR |= 0X01; //Set I/O direction
P1IE = 0x80; //P1^7 interrupt enable
P1IES = 0x00; //Rising edge sets the corresponding flag bit
P1IFG = 0x00; //Clear interrupt flag
}
/
Function: void main(void)
Function: main function
*/
void main(void)
{
WDTCTL = WDTPW + WDTHOLD;
P1_INIT();
_EINT(); //Open total interrupt
while(1)
{
P1OUT=0x00;
}
}
#define uint unsigned int
#define uchar unsigned char
/
Function: void delay_1ms(void) void delay_nms(uint n)
Function: Delay 1ms Delay Nms
*/
void Delay_1ms(void) //1ms delay function
{
uint i;
for (i=0;i<80;i++);
}
void Delay_Nms(uint n) //N ms delay function
{
uint i=0;
for (i=0;i
}
/
Function: void P1_ISR(void)
Function: external interrupt service function
*/
#pragma vector=PORT1_VECTOR
__interrupt void Port_1(void)
{
uchar i;
for(i=0;i<10;i++)
{
P1OUT=0x01;
Delay_Nms(1000);
P1OUT=0x00;
Delay_Nms(1000);
}
P1IFG = 0x00; //Clear interrupt flag
}
/
Function: void P1_INIT(void)
Function: PORT1 port initialization
*/
void P1_INIT(void)
{
P1SEL = 0x00; //Set to normal I/O port
P1DIR |= 0X01; //Set I/O direction
P1IE = 0x80; //P1^7 interrupt enable
P1IES = 0x00; //Rising edge sets the corresponding flag bit
P1IFG = 0x00; //Clear interrupt flag
}
/
Function: void main(void)
Function: main function
*/
void main(void)
{
WDTCTL = WDTPW + WDTHOLD;
P1_INIT();
_EINT(); //Open total interrupt
while(1)
{
P1OUT=0x00;
}
}
Previous article：Time base interrupt timing for Sunplus 16-bit microcontroller
Next article：Reference IAR + Proteus7.6 simulation MSP430 microcontroller setting method
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