Other Parts Discussed in Thread: MSP430WARE, MSP-EXP430FR5969
Hello TI Team,
I am using an example code for MSP430FR5969, I want the device to go into LMP4 mode and after 60 seconds I should restart itself automatically without external interupt(Like a button). How can I achieve this
The code I am using is attached down this thread.
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//******************************************************************************
// MSP430FR59xx Demo - Entering and waking up from LPM4.5 via P1.1 interrupt
// with SVS disabled
//
// Description: Download and run the program. LED1 (or P4.6) will remain ON if
// LPM4.5 is correctly entered. Use a button S2 (or P1.1) on the
// EXP board to wake the device up from LPM4.5. This will enable
// the LFXT oscillator and blink the LED2 (on P1.0).
//
// This demo was tested on MSP-EXP430FR5969 LaunchPad.
//
// MSP430FR5969
// ---------------
// /|\| XIN|-
// | | | 32KHz Crystal
// --|RST XOUT|-
// | |
// | P1.0|---> LED2 (MSP-EXP430FR5969)
// | P4.6|---> LED1 (MSP-EXP430FR5969)
// | |
// | P1.1|<--- S2 push-button (MSP-EXP430FR5969)
//
// William Goh / Andreas Dannenberg
// Texas Instruments Inc.
// June 2014
// Built with IAR Embedded Workbench V6.10.3 & Code Composer Studio V6.0
//******************************************************************************
#include <msp430.h>
int main(void) {
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer
// Configure GPIO
P1OUT = 0; // Pull-up resistor on P1.1
P1DIR = 0xFF; // Set all but P1.1 to output direction
P2OUT = 0;
P2DIR = 0xFF;
P3OUT = 0;
P3DIR = 0xFF;
P4OUT = 0;
P4DIR = 0xFF;
PJOUT = BIT4; // Set PJ.4 / LFXTIN to high
PJDIR = 0xFFFF;
// Determine whether we are coming out of an LPMx.5 or a regular RESET.
if (SYSRSTIV == SYSRSTIV_LPM5WU) {
PJSEL0 = BIT4; // For XT1
// Clock System Setup
CSCTL0_H = CSKEY >> 8; // Unlock CS registers
CSCTL1 = DCOFSEL_0; // Set DCO to 1MHz
CSCTL2 = SELA__LFXTCLK | SELS__DCOCLK | SELM__DCOCLK;
CSCTL3 = DIVA__1 | DIVS__1 | DIVM__1; // Set all dividers
CSCTL4 &= ~LFXTOFF;
// Configure LED pin for output
P1DIR |= BIT0;
// Disable the GPIO power-on default high-impedance mode to activate
// previously configured port settings. The oscillator should now start...
PM5CTL0 &= ~LOCKLPM5;
do {
CSCTL5 &= ~LFXTOFFG; // Clear XT1 fault flag
SFRIFG1 &= ~OFIFG;
} while (SFRIFG1 & OFIFG); // Test oscillator fault flag
}
else {
// Configure P1.1 Interrupt
P1OUT |= BIT1; // Pull-up resistor on P1.1
P1REN |= BIT1; // Select pull-up mode for P1.1
P1DIR = 0xFF ^ BIT1; // Set all but P1.1 to output direction
P1IES |= BIT1; // P1.1 Hi/Lo edge
P1IFG = 0; // Clear all P1 interrupt flags
P1IE |= BIT1; // P1.1 interrupt enabled
P4OUT |= BIT6; // Turn on P4.6 (LED1) on EXP board
// to indicate we are about to enter
// LPM4.5
// Disable the GPIO power-on default high-impedance mode to activate
// previously configured port settings
PM5CTL0 &= ~LOCKLPM5;
PMMCTL0_H = PMMPW_H; // Open PMM Registers for write
PMMCTL0_L &= ~(SVSHE); // Disable high-side SVS
PMMCTL0_L |= PMMREGOFF; // and set PMMREGOFF
PMMCTL0_H = 0; // Lock PMM Registers
// Enter LPM4 Note that this operation does not return. The LPM4.5
// will exit through a RESET event, resulting in a re-start
// of the code.
__bis_SR_register(LPM4_bits);
// Should never get here...
while (1);
}
// Now blink the LED in an endless loop.
while (1) {
P1OUT ^= BIT0; // P1.0 = toggle
__delay_cycles(100000);
}
}
Thank you!
Best regards,
Pukhraj Singh
