1 /*
2 * Copyright (c) 2019 Manivannan Sadhasivam
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr.h>
8
9 #include <timer.h>
10
11 static void timer_work_handler(struct k_work *work);
12 K_WORK_DEFINE(timer_work, timer_work_handler);
13
14 static uint32_t saved_time;
15 /* TODO: Use Non-volatile memory for backup */
16 static volatile uint32_t backup_reg[2];
17
timer_work_handler(struct k_work * work)18 static void timer_work_handler(struct k_work *work)
19 {
20 TimerIrqHandler();
21 }
22
timer_callback(struct k_timer * _timer)23 static void timer_callback(struct k_timer *_timer)
24 {
25 ARG_UNUSED(_timer);
26
27 k_work_submit(&timer_work);
28 }
29
30 K_TIMER_DEFINE(lora_timer, timer_callback, NULL);
31
RtcBkupWrite(uint32_t data0,uint32_t data1)32 void RtcBkupWrite(uint32_t data0, uint32_t data1)
33 {
34 backup_reg[0] = data0;
35 backup_reg[1] = data1;
36 }
37
RtcBkupRead(uint32_t * data0,uint32_t * data1)38 void RtcBkupRead(uint32_t *data0, uint32_t *data1)
39 {
40 *data0 = backup_reg[0];
41 *data1 = backup_reg[1];
42 }
43
RtcGetCalendarTime(uint16_t * milliseconds)44 uint32_t RtcGetCalendarTime(uint16_t *milliseconds)
45 {
46 uint32_t now = k_uptime_get_32();
47
48 *milliseconds = now;
49
50 /* Return in seconds */
51 return now / MSEC_PER_SEC;
52 }
53
RtcGetTimerValue(void)54 uint32_t RtcGetTimerValue(void)
55 {
56 return k_uptime_get_32();
57 }
58
RtcGetTimerElapsedTime(void)59 uint32_t RtcGetTimerElapsedTime(void)
60 {
61 return (k_uptime_get_32() - saved_time);
62 }
63
RtcGetMinimumTimeout(void)64 uint32_t RtcGetMinimumTimeout(void)
65 {
66 return 1;
67 }
68
RtcStopAlarm(void)69 void RtcStopAlarm(void)
70 {
71 k_timer_stop(&lora_timer);
72 }
73
RtcSetAlarm(uint32_t timeout)74 void RtcSetAlarm(uint32_t timeout)
75 {
76 k_timer_start(&lora_timer, K_MSEC(timeout), K_NO_WAIT);
77 }
78
RtcSetTimerContext(void)79 uint32_t RtcSetTimerContext(void)
80 {
81 saved_time = k_uptime_get_32();
82
83 return saved_time;
84 }
85
86 /* For us, 1 tick = 1 milli second. So no need to do any conversion here */
RtcGetTimerContext(void)87 uint32_t RtcGetTimerContext(void)
88 {
89 return saved_time;
90 }
91
DelayMsMcu(uint32_t ms)92 void DelayMsMcu(uint32_t ms)
93 {
94 k_sleep(K_MSEC(ms));
95 }
96
RtcMs2Tick(uint32_t milliseconds)97 uint32_t RtcMs2Tick(uint32_t milliseconds)
98 {
99 return milliseconds;
100 }
101
RtcTick2Ms(uint32_t tick)102 uint32_t RtcTick2Ms(uint32_t tick)
103 {
104 return tick;
105 }
106
BoardCriticalSectionBegin(uint32_t * mask)107 void BoardCriticalSectionBegin(uint32_t *mask)
108 {
109 *mask = irq_lock();
110 }
111
BoardCriticalSectionEnd(uint32_t * mask)112 void BoardCriticalSectionEnd(uint32_t *mask)
113 {
114 irq_unlock(*mask);
115 }
116
