kopia lustrzana https://github.com/espressif/esp-idf
87 wiersze
2.9 KiB
C
87 wiersze
2.9 KiB
C
// Copyright 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 "sdkconfig.h"
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include <esp_types.h>
|
|
#include "esp_err.h"
|
|
#include "esp_intr_alloc.h"
|
|
#include "esp_attr.h"
|
|
#include "esp_freertos_hooks.h"
|
|
#include "soc/timer_group_struct.h"
|
|
#include "soc/timer_group_reg.h"
|
|
#include "driver/timer.h"
|
|
#include "driver/periph_ctrl.h"
|
|
#include "esp_int_wdt.h"
|
|
|
|
#if CONFIG_ESP_INT_WDT
|
|
|
|
|
|
#define WDT_INT_NUM 24
|
|
|
|
|
|
//Take care: the tick hook can also be called before esp_int_wdt_init() is called.
|
|
|
|
static void IRAM_ATTR tick_hook(void)
|
|
{
|
|
TIMERG1.wdt_wprotect=TIMG_WDT_WKEY_VALUE;
|
|
TIMERG1.wdt_config2=CONFIG_ESP_INT_WDT_TIMEOUT_MS*2; //Set timeout before interrupt
|
|
TIMERG1.wdt_config3=CONFIG_ESP_INT_WDT_TIMEOUT_MS*4; //Set timeout before reset
|
|
TIMERG1.wdt_feed=1;
|
|
TIMERG1.wdt_wprotect=0;
|
|
}
|
|
|
|
void esp_int_wdt_init(void)
|
|
{
|
|
periph_module_enable(PERIPH_TIMG1_MODULE);
|
|
TIMERG1.wdt_wprotect=TIMG_WDT_WKEY_VALUE;
|
|
TIMERG1.wdt_config0.sys_reset_length=7; //3.2uS
|
|
TIMERG1.wdt_config0.cpu_reset_length=7; //3.2uS
|
|
TIMERG1.wdt_config0.level_int_en=1;
|
|
TIMERG1.wdt_config0.stg0=TIMG_WDT_STG_SEL_INT; //1st stage timeout: interrupt
|
|
TIMERG1.wdt_config0.stg1=TIMG_WDT_STG_SEL_RESET_SYSTEM; //2nd stage timeout: reset system
|
|
TIMERG1.wdt_config1.clk_prescale=80*500; //Prescaler: wdt counts in ticks of 0.5mS
|
|
//The timer configs initially are set to 5 seconds, to make sure the CPU can start up. The tick hook sets
|
|
//it to their actual value.
|
|
TIMERG1.wdt_config2=10000;
|
|
TIMERG1.wdt_config3=10000;
|
|
TIMERG1.wdt_config0.en=1;
|
|
TIMERG1.wdt_feed=1;
|
|
TIMERG1.wdt_wprotect=0;
|
|
TIMERG1.int_clr.wdt=1;
|
|
timer_group_intr_enable(TIMER_GROUP_1, TIMG_WDT_INT_ENA_M);
|
|
}
|
|
|
|
void esp_int_wdt_cpu_init(void)
|
|
{
|
|
esp_register_freertos_tick_hook_for_cpu(tick_hook, 0);
|
|
ESP_INTR_DISABLE(WDT_INT_NUM);
|
|
intr_matrix_set(0, ETS_TG1_WDT_LEVEL_INTR_SOURCE, WDT_INT_NUM);
|
|
//We do not register a handler for the interrupt because it is interrupt level 4 which
|
|
//is not servicable from C. Instead, xtensa_vectors.S has a call to the panic handler for
|
|
//this interrupt.
|
|
ESP_INTR_ENABLE(WDT_INT_NUM);
|
|
}
|
|
|
|
|
|
|
|
#endif // CONFIG_ESP_INT_WDT
|