esp-idf/components/soc/esp32s2beta/rtc_pm.c
2019-08-13 17:14:16 +10:00

68 lines
1.8 KiB
C

// Copyright 2015-2017 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 <assert.h>
#include "soc/rtc.h"
#include "soc/rtc_cntl_reg.h"
#include "soc/apb_ctrl_reg.h"
typedef enum {
PM_LIGHT_SLEEP = BIT(2), /*!< WiFi PD, memory in light sleep */
} pm_sleep_mode_t;
typedef enum{
PM_SW_NOREJECT = 0,
PM_SW_REJECT = 1
} pm_sw_reject_t;
/* These MAC-related functions are defined in the closed source part of
* RTC library
*/
extern void pm_mac_init(void);
extern int pm_check_mac_idle(void);
extern void pm_mac_deinit(void);
/* This sleep-related function is called from the closed source part of RTC
* library.
*/
pm_sw_reject_t pm_set_sleep_mode(pm_sleep_mode_t sleep_mode, void(*pmac_save_params)(void))
{
(void) pmac_save_params; /* unused */
pm_mac_deinit();
if (pm_check_mac_idle()) {
pm_mac_init();
return PM_SW_REJECT;
}
rtc_sleep_config_t cfg = { 0 };
switch (sleep_mode) {
case PM_LIGHT_SLEEP:
cfg.wifi_pd_en = 1;
cfg.dig_dbias_wak = 4;
cfg.dig_dbias_slp = 0;
cfg.rtc_dbias_wak = 0;
cfg.rtc_dbias_slp = 0;
rtc_sleep_init(cfg);
break;
default:
assert(0 && "unsupported sleep mode");
}
return PM_SW_NOREJECT;
}