/
task_wdt.c
115 lines (93 loc) · 3.3 KB
/
task_wdt.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdint.h>
#include "esp_log.h"
#include "esp_libc.h"
#include "esp_wifi_osi.h"
#include "esp_task_wdt.h"
#include "portmacro.h"
#include "esp8266/eagle_soc.h"
static const char *TAG = "wdt";
#ifdef CONFIG_TASK_WDT_PANIC
/**
* @brief Task watch dog interrupt function and it should do panic
*/
static void esp_task_wdt_isr(void *param)
{
/*
* In RIOT-OS, the interrupt from WDT (stage 1) is only used to wakeup
* the system and to execute `sched_run` on the exit from the interrupt
* to schedule the next task which also resets the WDT.
* The system is hard-reset (stage 2), if the system is locked completely.
*/
#ifdef RIOT_VERSION
esp_task_wdt_reset();
#else
extern void panicHandler(void *frame, int wdt);
panicHandler(osi_task_top_sp(), 1);
#endif
}
#endif
/**
* @brief Just for pass compiling and mark wdt calling line
*/
typedef void (* _xt_isr)(void *arg);
extern void _xt_isr_unmask(uint32_t unmask);
extern void _xt_clear_ints(uint32_t mask);
extern void _xt_isr_attach(uint8_t i, _xt_isr func, void *arg);
esp_err_t esp_task_wdt_init(void)
{
CLEAR_WDT_REG_MASK(WDT_CTL_ADDRESS, BIT0);
#ifdef CONFIG_TASK_WDT_PANIC
const uint32_t panic_time_param = 11;
// Just for soft restart
_xt_clear_ints(1 << ETS_WDT_INUM);
_xt_isr_attach(ETS_WDT_INUM, esp_task_wdt_isr, NULL);
_xt_isr_unmask(1 << ETS_WDT_INUM);
WDT_EDGE_INT_ENABLE();
ESP_LOGD(TAG, "Enable task watch dog panic, panic time parameter is %u", panic_time_param);
#else
const uint32_t panic_time_param = 1;
#endif
ESP_LOGD(TAG, "task watch dog trigger time parameter is %u", CONFIG_TASK_WDT_TIMEOUT_S);
WDT_REG_WRITE(WDT_OP_ADDRESS, CONFIG_TASK_WDT_TIMEOUT_S); // 2^n * 0.8ms, mask 0xf, n = 13 -> (2^13 = 8192) * 0.8 * 0.001 = 6.5536
WDT_REG_WRITE(WDT_OP_ND_ADDRESS, panic_time_param); // 2^n * 0.8ms, mask 0xf, n = 11 -> (2^11 = 2048) * 0.8 * 0.001 = 1.6384
SET_PERI_REG_BITS(PERIPHS_WDT_BASEADDR + WDT_CTL_ADDRESS, WDT_CTL_RSTLEN_MASK, 7 << WDT_CTL_RSTLEN_LSB, 0);
// interrupt then reset
SET_PERI_REG_BITS(PERIPHS_WDT_BASEADDR + WDT_CTL_ADDRESS, WDT_CTL_RSPMOD_MASK, 0 << WDT_CTL_RSPMOD_LSB, 0);
// start task watch dog1
SET_PERI_REG_BITS(PERIPHS_WDT_BASEADDR + WDT_CTL_ADDRESS, WDT_CTL_EN_MASK, 1 << WDT_CTL_EN_LSB, 0);
WDT_FEED();
return 0;
}
/**
* @brief Reset(Feed) the Task Watchdog Timer (TWDT) on behalf of the currently
* running task
*/
void esp_task_wdt_reset(void)
{
WDT_FEED();
}
/**
* @brief Just for pass compiling and mark wdt calling line
*/
void pp_soft_wdt_stop(void)
{
}
/**
* @brief Just for pass compiling and mark wdt calling line
*/
void pp_soft_wdt_restart(void)
{
}