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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Dan Halbert 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 <math.h>
#include <string.h>
#include "py/runtime.h"
#include "common-hal/microcontroller/Processor.h"
#include "shared-bindings/microcontroller/ResetReason.h"
#include "supervisor/shared/translate.h"
#include "esp_sleep.h"
#include "esp_system.h"
#include "soc/efuse_reg.h"
#include "components/driver/esp32s2/include/driver/temp_sensor.h"
float common_hal_mcu_processor_get_temperature(void) {
float tsens_out;
temp_sensor_config_t temp_sensor = TSENS_CONFIG_DEFAULT(); // DEFAULT: range:-10℃ ~ 80℃, error < 1℃.
temp_sensor_set_config(temp_sensor);
temp_sensor_start();
temp_sensor_read_celsius(&tsens_out);
temp_sensor_stop();
return tsens_out;
}
float common_hal_mcu_processor_get_voltage(void) {
return NAN;
}
uint32_t common_hal_mcu_processor_get_frequency(void) {
return 0;
}
STATIC uint8_t swap_nibbles(uint8_t v) {
return ((v << 4) | (v >> 4)) & 0xff;
}
void common_hal_mcu_processor_get_uid(uint8_t raw_id[]) {
memset(raw_id, 0, COMMON_HAL_MCU_PROCESSOR_UID_LENGTH);
uint8_t *ptr = &raw_id[COMMON_HAL_MCU_PROCESSOR_UID_LENGTH - 1];
// MAC address contains 48 bits (6 bytes), 32 in the low order word
uint32_t mac_address_part = REG_READ(EFUSE_RD_MAC_SPI_SYS_0_REG);
*ptr-- = swap_nibbles(mac_address_part & 0xff);
mac_address_part >>= 8;
*ptr-- = swap_nibbles(mac_address_part & 0xff);
mac_address_part >>= 8;
*ptr-- = swap_nibbles(mac_address_part & 0xff);
mac_address_part >>= 8;
*ptr-- = swap_nibbles(mac_address_part & 0xff);
// and 16 in the high order word
mac_address_part = REG_READ(EFUSE_RD_MAC_SPI_SYS_1_REG);
*ptr-- = swap_nibbles(mac_address_part & 0xff);
mac_address_part >>= 8;
*ptr-- = swap_nibbles(mac_address_part & 0xff);
}
mcu_reset_reason_t common_hal_mcu_processor_get_reset_reason(void) {
switch (esp_reset_reason()) {
case ESP_RST_POWERON:
return RESET_REASON_POWER_ON;
case ESP_RST_SW:
case ESP_RST_PANIC:
return RESET_REASON_SOFTWARE;
case ESP_RST_INT_WDT:
case ESP_RST_TASK_WDT:
case ESP_RST_WDT:
return RESET_REASON_WATCHDOG;
case ESP_RST_BROWNOUT:
return RESET_REASON_BROWNOUT;
case ESP_RST_SDIO:
case ESP_RST_EXT:
return RESET_REASON_RESET_PIN;
case ESP_RST_DEEPSLEEP:
switch (esp_sleep_get_wakeup_cause()) {
case ESP_SLEEP_WAKEUP_TIMER:
case ESP_SLEEP_WAKEUP_EXT0:
case ESP_SLEEP_WAKEUP_EXT1:
case ESP_SLEEP_WAKEUP_TOUCHPAD:
return RESET_REASON_DEEP_SLEEP_ALARM;
case ESP_SLEEP_WAKEUP_UNDEFINED:
default:
return RESET_REASON_UNKNOWN;
}
case ESP_RST_UNKNOWN:
default:
return RESET_REASON_UNKNOWN;
}
}
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