circuitpython/ports/esp32s2/common-hal/microcontroller/__init__.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 Scott Shawcroft for Adafruit Industries
 * Copyright (c) 2019 Lucian Copeland for Adafruit Industries
 *
 * 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.
 */

#include <sys/time.h>

#include "py/mphal.h"
#include "py/obj.h"
#include "py/runtime.h"

#include "common-hal/microcontroller/Pin.h"
#include "common-hal/microcontroller/Processor.h"

#include "shared-bindings/microcontroller/__init__.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "shared-bindings/microcontroller/Processor.h"

#include "supervisor/filesystem.h"
#include "supervisor/shared/safe_mode.h"

#include "freertos/FreeRTOS.h"

#include "esp_sleep.h"
#include "soc/rtc_periph.h"

static RTC_DATA_ATTR struct timeval sleep_enter_time;

void common_hal_mcu_delay_us(uint32_t delay) {

}

volatile uint32_t nesting_count = 0;
static portMUX_TYPE cp_mutex = portMUX_INITIALIZER_UNLOCKED;

void common_hal_mcu_disable_interrupts(void) {
    if (nesting_count == 0) {
        portENTER_CRITICAL(&cp_mutex);
    }
    nesting_count++;
}

void common_hal_mcu_enable_interrupts(void) {
    if (nesting_count == 0) {
        // Maybe log here because it's very bad.
    }
    nesting_count--;
    if (nesting_count > 0) {
        return;
    }
    portEXIT_CRITICAL(&cp_mutex);
}

void common_hal_mcu_on_next_reset(mcu_runmode_t runmode) {
    if(runmode == RUNMODE_SAFE_MODE)
        safe_mode_on_next_reset(PROGRAMMATIC_SAFE_MODE);
}

void common_hal_mcu_reset(void) {
    filesystem_flush(); //TODO: implement as part of flash improvements
    // NVIC_SystemReset();
    while(1);
}

void common_hal_mcu_sleep(void) {
    gettimeofday(&sleep_enter_time, NULL);
    esp_deep_sleep_start(); 
}

int common_hal_mcu_get_sleep_time(void) {
    struct timeval now;
    gettimeofday(&now, NULL);
    return (now.tv_sec - sleep_enter_time.tv_sec) * 1000 + (now.tv_usec - sleep_enter_time.tv_usec) / 1000;
}

mp_obj_t common_hal_mcu_get_wake_alarm(void) {
    switch (esp_sleep_get_wakeup_cause()) {
        case ESP_SLEEP_WAKEUP_TIMER: ;
            //Wake up from timer.
            alarm_time_obj_t *timer = m_new_obj(alarm_time_obj_t);
            timer->base.type = &alarm_time_type;           
            return timer;
        case ESP_SLEEP_WAKEUP_EXT0: ;
            //Wake up from GPIO
            alarm_io_obj_t *ext0 = m_new_obj(alarm_io_obj_t);
            ext0->base.type = &alarm_io_type;  
            return ext0;
        case ESP_SLEEP_WAKEUP_EXT1: 
            //Wake up from GPIO, returns -> esp_sleep_get_ext1_wakeup_status()  
            /*uint64_t wakeup_pin_mask = esp_sleep_get_ext1_wakeup_status();
            if (wakeup_pin_mask != 0) {
                int pin = __builtin_ffsll(wakeup_pin_mask) - 1;
                printf("Wake up from GPIO %d\n", pin);
            } else {
                printf("Wake up from GPIO\n");
            }*/
            break;       
        case ESP_SLEEP_WAKEUP_TOUCHPAD: 
            //TODO: implement TouchIO
            //Wake up from touch on pad, returns -> esp_sleep_get_touchpad_wakeup_status()
            break;        
        case ESP_SLEEP_WAKEUP_UNDEFINED:
        default:
            //Not a deep sleep reset
            break;
    }
    return mp_const_none;
}

// The singleton microcontroller.Processor object, bound to microcontroller.cpu
// It currently only has properties, and no state.
const mcu_processor_obj_t common_hal_mcu_processor_obj = {
    .base = {
        .type = &mcu_processor_type,
    },
};

// This maps MCU pin names to pin objects.
STATIC const mp_rom_map_elem_t mcu_pin_global_dict_table[] = {
    { MP_ROM_QSTR(MP_QSTR_GPIO0), MP_ROM_PTR(&pin_GPIO0) },
    { MP_ROM_QSTR(MP_QSTR_GPIO1), MP_ROM_PTR(&pin_GPIO1) },
    { MP_ROM_QSTR(MP_QSTR_GPIO2), MP_ROM_PTR(&pin_GPIO2) },
    { MP_ROM_QSTR(MP_QSTR_GPIO3), MP_ROM_PTR(&pin_GPIO3) },
    { MP_ROM_QSTR(MP_QSTR_GPIO4), MP_ROM_PTR(&pin_GPIO4) },
    { MP_ROM_QSTR(MP_QSTR_GPIO5), MP_ROM_PTR(&pin_GPIO5) },
    { MP_ROM_QSTR(MP_QSTR_GPIO6), MP_ROM_PTR(&pin_GPIO6) },
    { MP_ROM_QSTR(MP_QSTR_GPIO7), MP_ROM_PTR(&pin_GPIO7) },
    { MP_ROM_QSTR(MP_QSTR_GPIO8), MP_ROM_PTR(&pin_GPIO8) },
    { MP_ROM_QSTR(MP_QSTR_GPIO9), MP_ROM_PTR(&pin_GPIO9) },
    { MP_ROM_QSTR(MP_QSTR_GPIO10), MP_ROM_PTR(&pin_GPIO10) },
    { MP_ROM_QSTR(MP_QSTR_GPIO11), MP_ROM_PTR(&pin_GPIO11) },
    { MP_ROM_QSTR(MP_QSTR_GPIO12), MP_ROM_PTR(&pin_GPIO12) },
    { MP_ROM_QSTR(MP_QSTR_GPIO13), MP_ROM_PTR(&pin_GPIO13) },
    { MP_ROM_QSTR(MP_QSTR_GPIO14), MP_ROM_PTR(&pin_GPIO14) },
    { MP_ROM_QSTR(MP_QSTR_GPIO15), MP_ROM_PTR(&pin_GPIO15) },
    { MP_ROM_QSTR(MP_QSTR_GPIO16), MP_ROM_PTR(&pin_GPIO16) },
    { MP_ROM_QSTR(MP_QSTR_GPIO17), MP_ROM_PTR(&pin_GPIO17) },
    { MP_ROM_QSTR(MP_QSTR_GPIO18), MP_ROM_PTR(&pin_GPIO18) },
    { MP_ROM_QSTR(MP_QSTR_GPIO19), MP_ROM_PTR(&pin_GPIO19) },
    { MP_ROM_QSTR(MP_QSTR_GPIO20), MP_ROM_PTR(&pin_GPIO20) },
    { MP_ROM_QSTR(MP_QSTR_GPIO21), MP_ROM_PTR(&pin_GPIO21) },

    { MP_ROM_QSTR(MP_QSTR_GPIO26), MP_ROM_PTR(&pin_GPIO26) },
    { MP_ROM_QSTR(MP_QSTR_GPIO27), MP_ROM_PTR(&pin_GPIO27) },
    { MP_ROM_QSTR(MP_QSTR_GPIO28), MP_ROM_PTR(&pin_GPIO28) },
    { MP_ROM_QSTR(MP_QSTR_GPIO29), MP_ROM_PTR(&pin_GPIO29) },
    { MP_ROM_QSTR(MP_QSTR_GPIO30), MP_ROM_PTR(&pin_GPIO30) },
    { MP_ROM_QSTR(MP_QSTR_GPIO31), MP_ROM_PTR(&pin_GPIO31) },
    { MP_ROM_QSTR(MP_QSTR_GPIO32), MP_ROM_PTR(&pin_GPIO32) },
    { MP_ROM_QSTR(MP_QSTR_GPIO33), MP_ROM_PTR(&pin_GPIO33) },
    { MP_ROM_QSTR(MP_QSTR_GPIO34), MP_ROM_PTR(&pin_GPIO34) },
    { MP_ROM_QSTR(MP_QSTR_GPIO35), MP_ROM_PTR(&pin_GPIO35) },
    { MP_ROM_QSTR(MP_QSTR_GPIO36), MP_ROM_PTR(&pin_GPIO36) },
    { MP_ROM_QSTR(MP_QSTR_GPIO37), MP_ROM_PTR(&pin_GPIO37) },
    { MP_ROM_QSTR(MP_QSTR_GPIO38), MP_ROM_PTR(&pin_GPIO38) },
    { MP_ROM_QSTR(MP_QSTR_GPIO39), MP_ROM_PTR(&pin_GPIO39) },
    { MP_ROM_QSTR(MP_QSTR_GPIO40), MP_ROM_PTR(&pin_GPIO40) },
    { MP_ROM_QSTR(MP_QSTR_GPIO41), MP_ROM_PTR(&pin_GPIO41) },
    { MP_ROM_QSTR(MP_QSTR_GPIO42), MP_ROM_PTR(&pin_GPIO42) },
    { MP_ROM_QSTR(MP_QSTR_GPIO43), MP_ROM_PTR(&pin_GPIO43) },
    { MP_ROM_QSTR(MP_QSTR_GPIO44), MP_ROM_PTR(&pin_GPIO44) },
    { MP_ROM_QSTR(MP_QSTR_GPIO45), MP_ROM_PTR(&pin_GPIO45) },
    { MP_ROM_QSTR(MP_QSTR_GPIO46), MP_ROM_PTR(&pin_GPIO46) },
};
MP_DEFINE_CONST_DICT(mcu_pin_globals, mcu_pin_global_dict_table);