circuitpython/ports/broadcom/common-hal/microcontroller/Processor.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2021 Scott Shawcroft 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 "shared-bindings/microcontroller/Processor.h"

#include <math.h>

#include "peripherals/broadcom/vcmailbox.h"

float common_hal_mcu_processor_get_temperature(void) {
    uint32_t temp = vcmailbox_get_temperature();
    return temp / 1000.0f;
}

float common_hal_mcu_processor_get_voltage(void) {
    return NAN;
}

uint32_t common_hal_mcu_processor_get_frequency(void) {
    return vcmailbox_get_clock_rate_measured(VCMAILBOX_CLOCK_ARM);
}

void common_hal_mcu_processor_get_uid(uint8_t raw_id[]) {
    uint64_t serial = vcmailbox_get_serial_number();
    for (size_t i = 0; i < sizeof(uint64_t); i++) {
        raw_id[i] = (serial >> (64 - ((i + 1) * 8))) & 0xff;
    }
}

mcu_reset_reason_t common_hal_mcu_processor_get_reset_reason(void) {
    return RESET_REASON_UNKNOWN;
}