xref: /btstack/port/archive/msp-exp430f5438-cc2564b/src/hal_cpu.c (revision 1664436fd643daf66517dc309e6cc72448e8a86d)

/*
 * Copyright (C) 2014 BlueKitchen GmbH
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 *
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 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 * 4. Any redistribution, use, or modification is done solely for
 *    personal benefit and not for any commercial purpose or for
 *    monetary gain.
 *
 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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/*
 *  hal_cpu.c
 *
 *  Implementation for MSP430 Experimenter board using low power mode 0/3
 *
 */

#include "hal_cpu.h"

#include "hal_board.h"
#include "hal_compat.h"

#include <msp430x54x.h>

static uint8_t low_power_mode_for_sleep = LPM0_bits;

void hal_cpu_disable_irqs(void){

    // LED off
    LED1_OUT &= ~LED1_PIN;

    // disable irq
    __bic_SR_register(GIE);
}

void hal_cpu_enable_irqs(void){

    // enable irq
    __bis_SR_register(GIE);

    // LED on
    LED1_OUT |= LED1_PIN;
}

void hal_cpu_set_uart_needed_during_sleep(uint8_t enabled){
    if (enabled){
        LED2_OUT |= LED2_PIN;
        low_power_mode_for_sleep = LPM0_bits;
        return;
    }
    LED2_OUT &= ~LED2_PIN;
    low_power_mode_for_sleep = LPM3_bits;
}

void hal_cpu_enable_irqs_and_sleep(void){

    // enable irq and enter lpm0
    __bis_SR_register(low_power_mode_for_sleep + GIE);

    // LED on
    LED1_OUT |= LED1_PIN;
}