Outline ![]()
Files ![]()
loading...
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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
/*
* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
// The LL layer for Timer Group register operations.
// Note that most of the register operations in this layer are non-atomic operations.
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include <stdbool.h>
#include "hal/misc.h"
#include "hal/assert.h"
#include "soc/wdt_periph.h"
#include "soc/timer_group_struct.h"
#include "hal/wdt_types.h"
#include "esp_attr.h"
#include "esp_assert.h"
/* Pre-calculated prescaler to achieve 500 ticks/us (MWDT1_TICKS_PER_US) when using default clock (MWDT_CLK_SRC_DEFAULT ) */
#define MWDT_LL_DEFAULT_CLK_PRESCALER 40000
/* Possible values for TIMG_WDT_STGx */
#define TIMG_WDT_STG_SEL_OFF 0
#define TIMG_WDT_STG_SEL_INT 1
#define TIMG_WDT_STG_SEL_RESET_CPU 2
#define TIMG_WDT_STG_SEL_RESET_SYSTEM 3
/* Possible values for TIMG_WDT_CPU_RESET_LENGTH and TIMG_WDT_SYS_RESET_LENGTH */
#define TIMG_WDT_RESET_LENGTH_100_NS 0
#define TIMG_WDT_RESET_LENGTH_200_NS 1
#define TIMG_WDT_RESET_LENGTH_300_NS 2
#define TIMG_WDT_RESET_LENGTH_400_NS 3
#define TIMG_WDT_RESET_LENGTH_500_NS 4
#define TIMG_WDT_RESET_LENGTH_800_NS 5
#define TIMG_WDT_RESET_LENGTH_1600_NS 6
#define TIMG_WDT_RESET_LENGTH_3200_NS 7
//Type check wdt_stage_action_t
ESP_STATIC_ASSERT(WDT_STAGE_ACTION_OFF == TIMG_WDT_STG_SEL_OFF, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_stage_action_t");
ESP_STATIC_ASSERT(WDT_STAGE_ACTION_INT == TIMG_WDT_STG_SEL_INT, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_stage_action_t");
ESP_STATIC_ASSERT(WDT_STAGE_ACTION_RESET_CPU == TIMG_WDT_STG_SEL_RESET_CPU, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_stage_action_t");
ESP_STATIC_ASSERT(WDT_STAGE_ACTION_RESET_SYSTEM == TIMG_WDT_STG_SEL_RESET_SYSTEM, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_stage_action_t");
//Type check wdt_reset_sig_length_t
ESP_STATIC_ASSERT(WDT_RESET_SIG_LENGTH_100ns == TIMG_WDT_RESET_LENGTH_100_NS, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_reset_sig_length_t");
ESP_STATIC_ASSERT(WDT_RESET_SIG_LENGTH_200ns == TIMG_WDT_RESET_LENGTH_200_NS, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_reset_sig_length_t");
ESP_STATIC_ASSERT(WDT_RESET_SIG_LENGTH_300ns == TIMG_WDT_RESET_LENGTH_300_NS, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_reset_sig_length_t");
ESP_STATIC_ASSERT(WDT_RESET_SIG_LENGTH_400ns == TIMG_WDT_RESET_LENGTH_400_NS, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_reset_sig_length_t");
ESP_STATIC_ASSERT(WDT_RESET_SIG_LENGTH_500ns == TIMG_WDT_RESET_LENGTH_500_NS, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_reset_sig_length_t");
ESP_STATIC_ASSERT(WDT_RESET_SIG_LENGTH_800ns == TIMG_WDT_RESET_LENGTH_800_NS, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_reset_sig_length_t");
ESP_STATIC_ASSERT(WDT_RESET_SIG_LENGTH_1_6us == TIMG_WDT_RESET_LENGTH_1600_NS, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_reset_sig_length_t");
ESP_STATIC_ASSERT(WDT_RESET_SIG_LENGTH_3_2us == TIMG_WDT_RESET_LENGTH_3200_NS, "Add mapping to LL watchdog timeout behavior, since it's no longer naturally compatible with wdt_reset_sig_length_t");
/**
* @brief Enable the MWDT
*
* @param hw Start address of the peripheral registers.
*/
FORCE_INLINE_ATTR void mwdt_ll_enable(timg_dev_t *hw)
{
hw->wdtconfig0.wdt_en = 1;
}
/**
* @brief Disable the MWDT
*
* @param hw Start address of the peripheral registers.
* @note This function does not disable the flashboot mode. Therefore, given that
* the MWDT is disabled using this function, a timeout can still occur
* if the flashboot mode is simultaneously enabled.
*/
FORCE_INLINE_ATTR void mwdt_ll_disable(timg_dev_t *hw)
{
hw->wdtconfig0.wdt_en = 0;
}
/**
* Check if the MWDT is enabled
*
* @param hw Start address of the peripheral registers.
* @return True if the MWDT is enabled, false otherwise
*/
FORCE_INLINE_ATTR bool mwdt_ll_check_if_enabled(timg_dev_t *hw)
{
return (hw->wdtconfig0.wdt_en) ? true : false;
}
/**
* @brief Configure a particular stage of the MWDT
*
* @param hw Start address of the peripheral registers.
* @param stage Which stage to configure
* @param timeout Number of timer ticks for the stage to timeout
* @param behavior What action to take when the stage times out
*/
FORCE_INLINE_ATTR void mwdt_ll_config_stage(timg_dev_t *hw, wdt_stage_t stage, uint32_t timeout, wdt_stage_action_t behavior)
{
switch (stage) {
case WDT_STAGE0:
hw->wdtconfig0.wdt_stg0 = behavior;
hw->wdtconfig2.wdt_stg0_hold = timeout;
break;
case WDT_STAGE1:
hw->wdtconfig0.wdt_stg1 = behavior;
hw->wdtconfig3.wdt_stg1_hold = timeout;
break;
case WDT_STAGE2:
hw->wdtconfig0.wdt_stg2 = behavior;
hw->wdtconfig4.wdt_stg2_hold = timeout;
break;
case WDT_STAGE3:
hw->wdtconfig0.wdt_stg3 = behavior;
hw->wdtconfig5.wdt_stg3_hold = timeout;
break;
default:
HAL_ASSERT(false && "unsupported WDT stage");
break;
}
}
/**
* @brief Disable a particular stage of the MWDT
*
* @param hw Start address of the peripheral registers.
* @param stage Which stage to disable
*/
FORCE_INLINE_ATTR void mwdt_ll_disable_stage(timg_dev_t *hw, uint32_t stage)
{
switch (stage) {
case WDT_STAGE0:
hw->wdtconfig0.wdt_stg0 = WDT_STAGE_ACTION_OFF;
break;
case WDT_STAGE1:
hw->wdtconfig0.wdt_stg1 = WDT_STAGE_ACTION_OFF;
break;
case WDT_STAGE2:
hw->wdtconfig0.wdt_stg2 = WDT_STAGE_ACTION_OFF;
break;
case WDT_STAGE3:
hw->wdtconfig0.wdt_stg3 = WDT_STAGE_ACTION_OFF;
break;
default:
HAL_ASSERT(false && "unsupported WDT stage");
break;
}
}
/**
* @brief Enable or disable MWDT edge interrupt
*
* @param hw Start address of the peripheral registers.
* @param enable Whether to enable edge interrupt
*/
FORCE_INLINE_ATTR void mwdt_ll_set_edge_intr(timg_dev_t *hw, bool enable)
{
hw->wdtconfig0.wdt_edge_int_en = enable;
}
/**
* @brief Enable or disable MWDT level interrupt
*
* @param hw Start address of the peripheral registers.
* @param enable Whether to enable level interrupt
*/
FORCE_INLINE_ATTR void mwdt_ll_set_level_intr(timg_dev_t *hw, bool enable)
{
hw->wdtconfig0.wdt_level_int_en = enable;
}
/**
* @brief Set the length of the CPU reset action
*
* @param hw Start address of the peripheral registers.
* @param length Length of CPU reset signal
*/
FORCE_INLINE_ATTR void mwdt_ll_set_cpu_reset_length(timg_dev_t *hw, wdt_reset_sig_length_t length)
{
hw->wdtconfig0.wdt_cpu_reset_length = length;
}
/**
* @brief Set the length of the system reset action
*
* @param hw Start address of the peripheral registers.
* @param length Length of system reset signal
*/
FORCE_INLINE_ATTR void mwdt_ll_set_sys_reset_length(timg_dev_t *hw, wdt_reset_sig_length_t length)
{
hw->wdtconfig0.wdt_sys_reset_length = length;
}
/**
* @brief Enable/Disable the MWDT flashboot mode.
*
* @param hw Beginning address of the peripheral registers.
* @param enable True to enable WDT flashboot mode, false to disable WDT flashboot mode.
*
* @note Flashboot mode is independent and can trigger a WDT timeout event if the
* WDT's enable bit is set to 0. Flashboot mode for TG0 is automatically enabled
* on flashboot, and should be disabled by software when flashbooting completes.
*/
FORCE_INLINE_ATTR void mwdt_ll_set_flashboot_en(timg_dev_t *hw, bool enable)
{
hw->wdtconfig0.wdt_flashboot_mod_en = (enable) ? 1 : 0;
}
/**
* @brief Set the clock prescaler of the MWDT
*
* @param hw Start address of the peripheral registers.
* @param prescaler Prescaler value between 1 to 65535
*/
FORCE_INLINE_ATTR void mwdt_ll_set_prescaler(timg_dev_t *hw, uint32_t prescaler)
{
HAL_FORCE_MODIFY_U32_REG_FIELD(hw->wdtconfig1, wdt_clk_prescaler, prescaler);
}
/**
* @brief Feed the MWDT
*
* Resets the current timer count and current stage.
*
* @param hw Start address of the peripheral registers.
*/
FORCE_INLINE_ATTR void mwdt_ll_feed(timg_dev_t *hw)
{
hw->wdtfeed.wdt_feed = 1;
}
/**
* @brief Enable write protection of the MWDT registers
*
* @param hw Start address of the peripheral registers.
*/
FORCE_INLINE_ATTR void mwdt_ll_write_protect_enable(timg_dev_t *hw)
{
hw->wdtwprotect.wdt_wkey = 0;
}
/**
* @brief Disable write protection of the MWDT registers
*
* @param hw Start address of the peripheral registers.
*/
FORCE_INLINE_ATTR void mwdt_ll_write_protect_disable(timg_dev_t *hw)
{
hw->wdtwprotect.wdt_wkey = TIMG_WDT_WKEY_VALUE;
}
/**
* @brief Clear the MWDT interrupt status.
*
* @param hw Start address of the peripheral registers.
*/
FORCE_INLINE_ATTR void mwdt_ll_clear_intr_status(timg_dev_t *hw)
{
hw->int_clr_timers.wdt_int_clr = 1;
}
/**
* @brief Set the interrupt enable bit for the MWDT interrupt.
*
* @param hw Beginning address of the peripheral registers.
* @param enable Whether to enable the MWDT interrupt
*/
FORCE_INLINE_ATTR void mwdt_ll_set_intr_enable(timg_dev_t *hw, bool enable)
{
hw->int_ena_timers.wdt_int_ena = enable;
}
/**
* @brief Set the clock source for the MWDT.
*
* @param hw Beginning address of the peripheral registers.
* @param clk_src Clock source
*/
FORCE_INLINE_ATTR void mwdt_ll_set_clock_source(timg_dev_t *hw, mwdt_clock_source_t clk_src)
{
/* No clk source option on ESP32, always use APB as clock source */
(void)hw;
(void)clk_src;
HAL_ASSERT(clk_src == MWDT_CLK_SRC_APB);
}
/**
* @brief Enable MWDT module clock
*
* @param hw Beginning address of the peripheral registers.
* @param en true to enable, false to disable
*/
__attribute__((always_inline))
static inline void mwdt_ll_enable_clock(timg_dev_t *hw, bool en)
{
/* No MWDT specific clock bit on ESP32 */
(void)hw;
(void)en;
}
#ifdef __cplusplus
}
#endif
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
This file uses the notable symbols shown below. Click anywhere in the file to view more details.