1 /*
2 * Copyright (C) 2014 BlueKitchen GmbH
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the copyright holders nor the names of
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 * 4. Any redistribution, use, or modification is done solely for
17 * personal benefit and not for any commercial purpose or for
18 * monetary gain.
19 *
20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * Please inquire about commercial licensing options at
34 * [email protected]
35 *
36 */
37
38
39 /*
40 * hal_cpu.c
41 *
42 * Implementation for MSP430 Experimenter board using low power mode 0/3
43 *
44 */
45
46 #include "hal_cpu.h"
47
48 #include "hal_board.h"
49 #include "hal_compat.h"
50
51 #include <msp430x54x.h>
52
53 static uint8_t low_power_mode_for_sleep = LPM0_bits;
54
hal_cpu_disable_irqs(void)55 void hal_cpu_disable_irqs(void){
56
57 // LED off
58 LED1_OUT &= ~LED1_PIN;
59
60 // disable irq
61 __bic_SR_register(GIE);
62 }
63
hal_cpu_enable_irqs(void)64 void hal_cpu_enable_irqs(void){
65
66 // enable irq
67 __bis_SR_register(GIE);
68
69 // LED on
70 LED1_OUT |= LED1_PIN;
71 }
72
hal_cpu_set_uart_needed_during_sleep(uint8_t enabled)73 void hal_cpu_set_uart_needed_during_sleep(uint8_t enabled){
74 if (enabled){
75 LED2_OUT |= LED2_PIN;
76 low_power_mode_for_sleep = LPM0_bits;
77 return;
78 }
79 LED2_OUT &= ~LED2_PIN;
80 low_power_mode_for_sleep = LPM3_bits;
81 }
82
hal_cpu_enable_irqs_and_sleep(void)83 void hal_cpu_enable_irqs_and_sleep(void){
84
85 // enable irq and enter lpm0
86 __bis_SR_register(low_power_mode_for_sleep + GIE);
87
88 // LED on
89 LED1_OUT |= LED1_PIN;
90 }
91
92
93