homeclaw/web-ui/vendor/rp2040js/peripherals/rtc.js

import { BasePeripheral } from './peripheral.js';
const RTC_SETUP0 = 0x04;
const RTC_SETUP1 = 0x08;
const RTC_CTRL = 0x0c;
const IRQ_SETUP_0 = 0x10;
const RTC_RTC1 = 0x18;
const RTC_RTC0 = 0x1c;
const RTC_ENABLE_BITS = 0x01;
const RTC_ACTIVE_BITS = 0x2;
const RTC_LOAD_BITS = 0x10;
const SETUP_0_YEAR_SHIFT = 12;
const SETUP_0_YEAR_MASK = 0xfff;
const SETUP_0_MONTH_SHIFT = 8;
const SETUP_0_MONTH_MASK = 0xf;
const SETUP_0_DAY_SHIFT = 0;
const SETUP_0_DAY_MASK = 0x1f;
const SETUP_1_DOTW_SHIFT = 24;
const SETUP_1_DOTW_MASK = 0x7;
const SETUP_1_HOUR_SHIFT = 16;
const SETUP_1_HOUR_MASK = 0x1f;
const SETUP_1_MIN_SHIFT = 8;
const SETUP_1_MIN_MASK = 0x3f;
const SETUP_1_SEC_SHIFT = 0;
const SETUP_1_SEC_MASK = 0x3f;
const RTC_0_YEAR_SHIFT = 12;
const RTC_0_YEAR_MASK = 0xfff;
const RTC_0_MONTH_SHIFT = 8;
const RTC_0_MONTH_MASK = 0xf;
const RTC_0_DAY_SHIFT = 0;
const RTC_0_DAY_MASK = 0x1f;
const RTC_1_DOTW_SHIFT = 24;
const RTC_1_DOTW_MASK = 0x7;
const RTC_1_HOUR_SHIFT = 16;
const RTC_1_HOUR_MASK = 0x1f;
const RTC_1_MIN_SHIFT = 8;
const RTC_1_MIN_MASK = 0x3f;
const RTC_1_SEC_SHIFT = 0;
const RTC_1_SEC_MASK = 0x3f;
export class RP2040RTC extends BasePeripheral {
    constructor() {
        super(...arguments);
        this.setup0 = 0;
        this.setup1 = 0;
        this.ctrl = 0;
        this.baseline = new Date(2021, 0, 1);
        this.baselineNanos = 0;
    }
    readUint32(offset) {
        const date = new Date(this.baseline.getTime() + (this.rp2040.clock.nanos - this.baselineNanos) / 1000000);
        switch (offset) {
            case RTC_SETUP0:
                return this.setup0;
            case RTC_SETUP1:
                return this.setup1;
            case RTC_CTRL:
                return this.ctrl;
            case IRQ_SETUP_0:
                return 0;
            case RTC_RTC1:
                return (((date.getFullYear() & RTC_0_YEAR_MASK) << RTC_0_YEAR_SHIFT) |
                    (((date.getMonth() + 1) & RTC_0_MONTH_MASK) << RTC_0_MONTH_SHIFT) |
                    ((date.getDate() & RTC_0_DAY_MASK) << RTC_0_DAY_SHIFT));
            case RTC_RTC0:
                return (((date.getDay() & RTC_1_DOTW_MASK) << RTC_1_DOTW_SHIFT) |
                    ((date.getHours() & RTC_1_HOUR_MASK) << RTC_1_HOUR_SHIFT) |
                    ((date.getMinutes() & RTC_1_MIN_MASK) << RTC_1_MIN_SHIFT) |
                    ((date.getSeconds() & RTC_1_SEC_MASK) << RTC_1_SEC_SHIFT));
            default:
                break;
        }
        return super.readUint32(offset);
    }
    writeUint32(offset, value) {
        switch (offset) {
            case RTC_SETUP0:
                this.setup0 = value;
                break;
            case RTC_SETUP1:
                this.setup1 = value;
                break;
            case RTC_CTRL:
                // Though RTC_LOAD_BITS is type SC and should be cleared on next cycle, pico-sdk write
                // RTC_LOAD_BITS & RTC_ENABLE_BITS seperatly.
                // https://github.com/raspberrypi/pico-sdk/blob/master/src/rp2_common/hardware_rtc/rtc.c#L76-L80
                if (value & RTC_LOAD_BITS) {
                    this.ctrl |= RTC_LOAD_BITS;
                }
                if (value & RTC_ENABLE_BITS) {
                    this.ctrl |= RTC_ENABLE_BITS;
                    this.ctrl |= RTC_ACTIVE_BITS;
                    if (this.ctrl & RTC_LOAD_BITS) {
                        const year = (this.setup0 >> SETUP_0_YEAR_SHIFT) & SETUP_0_YEAR_MASK;
                        const month = (this.setup0 >> SETUP_0_MONTH_SHIFT) & SETUP_0_MONTH_MASK;
                        const day = (this.setup0 >> SETUP_0_DAY_SHIFT) & SETUP_0_DAY_MASK;
                        const hour = (this.setup1 >> SETUP_1_HOUR_SHIFT) & SETUP_1_HOUR_MASK;
                        const min = (this.setup1 >> SETUP_1_MIN_SHIFT) & SETUP_1_MIN_MASK;
                        const sec = (this.setup1 >> SETUP_1_SEC_SHIFT) & SETUP_1_SEC_MASK;
                        this.baseline = new Date(year, month - 1, day, hour, min, sec);
                        this.baselineNanos = this.rp2040.clock.nanos;
                        this.ctrl &= ~RTC_LOAD_BITS;
                    }
                }
                else {
                    this.ctrl &= ~RTC_ENABLE_BITS;
                    this.ctrl &= ~RTC_ACTIVE_BITS;
                }
                break;
            default:
                super.writeUint32(offset, value);
        }
    }
}