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micropython/ports/esp32/modmachine.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* Development of the code in this file was sponsored by Microbric Pty Ltd
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2023 Damien P. George
* Copyright (c) 2016 Paul Sokolovsky
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// This file is never compiled standalone, it's included directly from
// extmod/modmachine.c via MICROPY_PY_MACHINE_INCLUDEFILE.
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_mac.h"
#include "esp_sleep.h"
#include "esp_pm.h"
#include "modmachine.h"
#include "machine_rtc.h"
#if MICROPY_HW_ENABLE_SDCARD
#define MICROPY_PY_MACHINE_SDCARD_ENTRY { MP_ROM_QSTR(MP_QSTR_SDCard), MP_ROM_PTR(&machine_sdcard_type) },
#else
#define MICROPY_PY_MACHINE_SDCARD_ENTRY
#endif
#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
#define MICROPY_PY_MACHINE_TOUCH_PAD_ENTRY { MP_ROM_QSTR(MP_QSTR_TouchPad), MP_ROM_PTR(&machine_touchpad_type) },
#else
#define MICROPY_PY_MACHINE_TOUCH_PAD_ENTRY
#endif
#define MICROPY_PY_MACHINE_EXTRA_GLOBALS \
{ MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&machine_lightsleep_obj) }, \
\
{ MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&machine_timer_type) }, \
MICROPY_PY_MACHINE_SDCARD_ENTRY \
{ MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&machine_pin_type) }, \
MICROPY_PY_MACHINE_TOUCH_PAD_ENTRY \
{ MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&machine_rtc_type) }, \
\
/* wake abilities */ \
{ MP_ROM_QSTR(MP_QSTR_SLEEP), MP_ROM_INT(MACHINE_WAKE_SLEEP) }, \
{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP), MP_ROM_INT(MACHINE_WAKE_DEEPSLEEP) }, \
\
/* Reset reasons */ \
{ MP_ROM_QSTR(MP_QSTR_HARD_RESET), MP_ROM_INT(MP_HARD_RESET) }, \
{ MP_ROM_QSTR(MP_QSTR_PWRON_RESET), MP_ROM_INT(MP_PWRON_RESET) }, \
{ MP_ROM_QSTR(MP_QSTR_WDT_RESET), MP_ROM_INT(MP_WDT_RESET) }, \
{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP_RESET), MP_ROM_INT(MP_DEEPSLEEP_RESET) }, \
{ MP_ROM_QSTR(MP_QSTR_SOFT_RESET), MP_ROM_INT(MP_SOFT_RESET) }, \
\
/* Wake reasons */ \
{ MP_ROM_QSTR(MP_QSTR_wake_reason), MP_ROM_PTR(&machine_wake_reason_obj) }, \
{ MP_ROM_QSTR(MP_QSTR_PIN_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_EXT0) }, \
{ MP_ROM_QSTR(MP_QSTR_EXT0_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_EXT0) }, \
{ MP_ROM_QSTR(MP_QSTR_EXT1_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_EXT1) }, \
{ MP_ROM_QSTR(MP_QSTR_TIMER_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_TIMER) }, \
{ MP_ROM_QSTR(MP_QSTR_TOUCHPAD_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_TOUCHPAD) }, \
{ MP_ROM_QSTR(MP_QSTR_ULP_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_ULP) }, \
typedef enum {
MP_PWRON_RESET = 1,
MP_HARD_RESET,
MP_WDT_RESET,
MP_DEEPSLEEP_RESET,
MP_SOFT_RESET
} reset_reason_t;
STATIC bool is_soft_reset = 0;
#if CONFIG_IDF_TARGET_ESP32C3
int esp_clk_cpu_freq(void);
#endif
STATIC mp_obj_t mp_machine_get_freq(void) {
return mp_obj_new_int(esp_rom_get_cpu_ticks_per_us() * 1000000);
}
STATIC void mp_machine_set_freq(size_t n_args, const mp_obj_t *args) {
mp_int_t freq = mp_obj_get_int(args[0]) / 1000000;
if (freq != 20 && freq != 40 && freq != 80 && freq != 160
#if !CONFIG_IDF_TARGET_ESP32C3
&& freq != 240
#endif
) {
#if CONFIG_IDF_TARGET_ESP32C3
mp_raise_ValueError(MP_ERROR_TEXT("frequency must be 20MHz, 40MHz, 80Mhz or 160MHz"));
#else
mp_raise_ValueError(MP_ERROR_TEXT("frequency must be 20MHz, 40MHz, 80Mhz, 160MHz or 240MHz"));
#endif
}
#if CONFIG_IDF_TARGET_ESP32
esp_pm_config_esp32_t pm;
#elif CONFIG_IDF_TARGET_ESP32C3
esp_pm_config_esp32c3_t pm;
#elif CONFIG_IDF_TARGET_ESP32S2
esp_pm_config_esp32s2_t pm;
#elif CONFIG_IDF_TARGET_ESP32S3
esp_pm_config_esp32s3_t pm;
#endif
pm.max_freq_mhz = freq;
pm.min_freq_mhz = freq;
pm.light_sleep_enable = false;
esp_err_t ret = esp_pm_configure(&pm);
if (ret != ESP_OK) {
mp_raise_ValueError(NULL);
}
while (esp_rom_get_cpu_ticks_per_us() != freq) {
vTaskDelay(1);
}
}
STATIC void machine_sleep_helper(wake_type_t wake_type, size_t n_args, const mp_obj_t *args) {
// First, disable any previously set wake-up source
esp_sleep_disable_wakeup_source(ESP_SLEEP_WAKEUP_ALL);
// Set the expiry time of the sleep, if given.
if (n_args != 0) {
mp_int_t expiry = mp_obj_get_int(args[0]);
esp_sleep_enable_timer_wakeup(((uint64_t)expiry) * 1000);
}
#if !CONFIG_IDF_TARGET_ESP32C3
if (machine_rtc_config.ext0_pin != -1 && (machine_rtc_config.ext0_wake_types & wake_type)) {
esp_sleep_enable_ext0_wakeup(machine_rtc_config.ext0_pin, machine_rtc_config.ext0_level ? 1 : 0);
}
if (machine_rtc_config.ext1_pins != 0) {
esp_sleep_enable_ext1_wakeup(
machine_rtc_config.ext1_pins,
machine_rtc_config.ext1_level ? ESP_EXT1_WAKEUP_ANY_HIGH : ESP_EXT1_WAKEUP_ALL_LOW);
}
if (machine_rtc_config.wake_on_touch) {
if (esp_sleep_enable_touchpad_wakeup() != ESP_OK) {
mp_raise_msg(&mp_type_RuntimeError, MP_ERROR_TEXT("esp_sleep_enable_touchpad_wakeup() failed"));
}
}
if (machine_rtc_config.wake_on_ulp) {
if (esp_sleep_enable_ulp_wakeup() != ESP_OK) {
mp_raise_msg(&mp_type_RuntimeError, MP_ERROR_TEXT("esp_sleep_enable_ulp_wakeup() failed"));
}
}
#endif
switch (wake_type) {
case MACHINE_WAKE_SLEEP:
esp_light_sleep_start();
break;
case MACHINE_WAKE_DEEPSLEEP:
esp_deep_sleep_start();
break;
}
}
STATIC void mp_machine_lightsleep(size_t n_args, const mp_obj_t *args) {
machine_sleep_helper(MACHINE_WAKE_SLEEP, n_args, args);
};
NORETURN STATIC void mp_machine_deepsleep(size_t n_args, const mp_obj_t *args) {
machine_sleep_helper(MACHINE_WAKE_DEEPSLEEP, n_args, args);
mp_machine_reset();
};
STATIC mp_int_t mp_machine_reset_cause(void) {
if (is_soft_reset) {
return MP_SOFT_RESET;
}
switch (esp_reset_reason()) {
case ESP_RST_POWERON:
case ESP_RST_BROWNOUT:
return MP_PWRON_RESET;
case ESP_RST_INT_WDT:
case ESP_RST_TASK_WDT:
case ESP_RST_WDT:
return MP_WDT_RESET;
case ESP_RST_DEEPSLEEP:
return MP_DEEPSLEEP_RESET;
case ESP_RST_SW:
case ESP_RST_PANIC:
case ESP_RST_EXT: // Comment in ESP-IDF: "For ESP32, ESP_RST_EXT is never returned"
return MP_HARD_RESET;
case ESP_RST_SDIO:
case ESP_RST_UNKNOWN:
default:
return 0;
}
}
NORETURN void mp_machine_bootloader(size_t n_args, const mp_obj_t *args) {
MICROPY_BOARD_ENTER_BOOTLOADER(n_args, args);
for (;;) {
}
}
void machine_init(void) {
is_soft_reset = 0;
}
void machine_deinit(void) {
// we are doing a soft-reset so change the reset_cause
is_soft_reset = 1;
}
STATIC mp_obj_t machine_wake_reason(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
return MP_OBJ_NEW_SMALL_INT(esp_sleep_get_wakeup_cause());
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_wake_reason_obj, 0, machine_wake_reason);
NORETURN STATIC void mp_machine_reset(void) {
esp_restart();
}
STATIC mp_obj_t mp_machine_unique_id(void) {
uint8_t chipid[6];
esp_efuse_mac_get_default(chipid);
return mp_obj_new_bytes(chipid, 6);
}
STATIC void mp_machine_idle(void) {
MP_THREAD_GIL_EXIT();
taskYIELD();
MP_THREAD_GIL_ENTER();
}
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