Skip to content

py/port/esp32 support on esp32c3 for deepsleep wakeup with gpio pins #15498

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

py/port/esp32 support on esp32c3 for deepsleep wakeup with gpio pins #15498

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 18 additions & 0 deletions docs/library/machine.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,24 @@ Power related functions

Availability: ESP32, WiPy.

.. function:: wake_ext1_pins()
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

The machine module, as much as possible, should contain port-agnostic functions. So the options here would be:

  1. Move these functions to the esp32 module, as they're port specific.
  2. Make a generic wake_pins() function and document it as only available currently on the ESP32 port. This creates the possibility that other ports can support it in the future.

I don't know if returning only the EXT1 wake pins as a wake_pins() result would be too misleading or not, but I assume the function could be extended to include EXT0 pins if there were any?


Returns the GPIO pin numbers of those pins which caused wakeup from deep sleep as a
tuple of integers.

This is a direct interface to the ESP-IDF ``esp_sleep_get_ext1_wakeup_status()`` function.

Availability: ESP32 (except ESP32C3).

.. function:: wake_gpio_pins()

Returns the GPIO pin numbers of those pins which caused wakeup from deep sleep as a
tuple of integers.

This is a direct interface to the ESP-IDF ``esp_sleep_get_gpio_wakeup_status()`` function.

Availability: ESP32C3 only.

Miscellaneous functions
-----------------------

Expand Down
8 changes: 8 additions & 0 deletions ports/esp32/modesp32.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,12 @@ static MP_DEFINE_CONST_FUN_OBJ_1(esp32_wake_on_touch_obj, esp32_wake_on_touch);

static mp_obj_t esp32_wake_on_ext0(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {

#if CONFIG_IDF_TARGET_ESP32C3

mp_raise_ValueError(MP_ERROR_TEXT("not supported"));

#else

if (machine_rtc_config.wake_on_touch) {
mp_raise_ValueError(MP_ERROR_TEXT("no resources"));
}
Expand All @@ -89,6 +95,8 @@ static mp_obj_t esp32_wake_on_ext0(size_t n_args, const mp_obj_t *pos_args, mp_m
machine_rtc_config.ext0_level = args[ARG_level].u_bool;
machine_rtc_config.ext0_wake_types = MACHINE_WAKE_SLEEP | MACHINE_WAKE_DEEPSLEEP;

#endif

return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_KW(esp32_wake_on_ext0_obj, 0, esp32_wake_on_ext0);
Expand Down
2 changes: 1 addition & 1 deletion ports/esp32/modesp32.h
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
#ifndef MICROPY_INCLUDED_ESP32_MODESP32_H
#define MICROPY_INCLUDED_ESP32_MODESP32_H

#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3

#define RTC_VALID_EXT_PINS \
( \
Expand Down
120 changes: 119 additions & 1 deletion ports/esp32/modmachine.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,39 @@
#define MICROPY_PY_MACHINE_TOUCH_PAD_ENTRY
#endif

#if CONFIG_IDF_TARGET_ESP32C3
#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_GPIO_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_GPIO) }, \
{ 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) }, \
{ MP_ROM_QSTR(MP_QSTR_wake_gpio_pins), MP_ROM_PTR(&machine_wake_gpio_pins_obj) }, \

#else
#define MICROPY_PY_MACHINE_EXTRA_GLOBALS \
{ MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&machine_lightsleep_obj) }, \
\
Expand All @@ -76,9 +109,13 @@
{ 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_GPIO_WAKE), MP_ROM_INT(ESP_SLEEP_WAKEUP_GPIO) }, \
{ 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) }, \
{ MP_ROM_QSTR(MP_QSTR_wake_ext1_pins), MP_ROM_PTR(&machine_wake_ext1_pins_obj) }, \

#endif

typedef enum {
MP_PWRON_RESET = 1,
Expand Down Expand Up @@ -146,7 +183,36 @@ static void machine_sleep_helper(wake_type_t wake_type, size_t n_args, const mp_
esp_sleep_enable_timer_wakeup(((uint64_t)expiry) * 1000);
}

#if !CONFIG_IDF_TARGET_ESP32C3
#if CONFIG_IDF_TARGET_ESP32C3

if (machine_rtc_config.ext1_pins != 0) {
gpio_int_type_t intr_type = machine_rtc_config.ext1_level ? GPIO_INTR_HIGH_LEVEL : GPIO_INTR_LOW_LEVEL;

for (int i = 0; i < GPIO_NUM_MAX; ++i) {
gpio_num_t gpio = (gpio_num_t)i;
uint64_t bm = 1ULL << i;

if (machine_rtc_config.ext1_pins & bm) {
gpio_sleep_set_direction(gpio, GPIO_MODE_INPUT);

if (MACHINE_WAKE_SLEEP == wake_type) {
gpio_wakeup_enable(gpio, intr_type);
}
}
}

if (MACHINE_WAKE_DEEPSLEEP == wake_type) {
if (ESP_OK != esp_deep_sleep_enable_gpio_wakeup(
machine_rtc_config.ext1_pins,
machine_rtc_config.ext1_level ? ESP_GPIO_WAKEUP_GPIO_HIGH : ESP_GPIO_WAKEUP_GPIO_LOW)) {
mp_raise_ValueError(MP_ERROR_TEXT("wake-up pin not supported"));
}
} else {
esp_sleep_enable_gpio_wakeup();
}
}

#else

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);
Expand Down Expand Up @@ -250,6 +316,58 @@ static mp_obj_t machine_wake_reason(size_t n_args, const mp_obj_t *pos_args, mp_
}
static MP_DEFINE_CONST_FUN_OBJ_KW(machine_wake_reason_obj, 0, machine_wake_reason);

#if CONFIG_IDF_TARGET_ESP32C3
static mp_obj_t machine_wake_gpio_pins(void) {
uint64_t status = esp_sleep_get_gpio_wakeup_status();
int len, index;
mp_obj_t *tuple = NULL;

// Only a few (~8) GPIOs might cause EXT1 wakeup.
// Therefore, we don't allocate 64*4 = 256 bytes on the stack and calculate the
// required space in a first pass.
for (index = 0, len = 0; index < 64; index++) {
len += (status & ((uint64_t)1 << index)) ? 1 : 0;
}
if (len) {
tuple = alloca(len * sizeof(*tuple));

for (index = 0, len = 0; index < 64; index++) {
if (status & ((uint64_t)1 << index)) {
tuple[len++] = MP_OBJ_NEW_SMALL_INT(index);
}
}
}
return mp_obj_new_tuple(len, tuple);
}

static MP_DEFINE_CONST_FUN_OBJ_0(machine_wake_gpio_pins_obj, machine_wake_gpio_pins);
#else
static mp_obj_t machine_wake_ext1_pins(void) {
uint64_t status = esp_sleep_get_ext1_wakeup_status();
int len, index;
mp_obj_t *tuple = NULL;

// Only a few (~8) GPIOs might cause EXT1 wakeup.
// Therefore, we don't allocate 64*4 = 256 bytes on the stack and calculate the
// required space in a first pass.
for (index = 0, len = 0; index < 64; index++) {
len += (status & ((uint64_t)1 << index)) ? 1 : 0;
}
if (len) {
tuple = alloca(len * sizeof(*tuple));

for (index = 0, len = 0; index < 64; index++) {
if (status & ((uint64_t)1 << index)) {
tuple[len++] = MP_OBJ_NEW_SMALL_INT(index);
}
}
}
return mp_obj_new_tuple(len, tuple);
}

static MP_DEFINE_CONST_FUN_OBJ_0(machine_wake_ext1_pins_obj, machine_wake_ext1_pins);
#endif

NORETURN static void mp_machine_reset(void) {
esp_restart();
}
Expand Down
Loading