Add RTC bm8563 and sample code for M5 Stick C gen 2

examples/drivers/m5stickc-rtc/main.js

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2016-2020  Moddable Tech, Inc.
+ *
+ *   This file is part of the Moddable SDK.
+ * 
+ *   This work is licensed under the
+ *       Creative Commons Attribution 4.0 International License.
+ *   To view a copy of this license, visit
+ *       <https://creativecommons.org/licenses/by/4.0>.
+ *   or send a letter to Creative Commons, PO Box 1866,
+ *   Mountain View, CA 94042, USA.
+ *
+ */
+
+import BM8563 from "bm8563";
+
+let rtc = new BM8563;
+let enabled=1;
+
+// Main button:  enable/disable RTC
+button.a.onChanged = function () {
+	if (button.a.read()) {
+		return;
+	}
+	enabled=!enabled;
+	rtc.enabled=enabled;
+	global.power.brightness = 20+enabled*70;
+}
+
+// Side button: set time from sntp
+button.b.onChanged = function () {
+	if (button.b.read()) {
+		return;
+	}
+	let d = new Date;
+	trace('Set time: ', d, '\n');
+	trace(d.getTime() / 1000, '\n');
+	rtc.seconds = d.getTime() / 1000;
+}
+
+import Timer from "timer";
+import parseBMF from "commodetto/parseBMF";
+import Poco from "commodetto/Poco";
+import Resource from "Resource";
+
+const render = new Poco(screen, {rotation: 90});
+
+let white = render.makeColor(255, 255, 255);
+let blue = render.makeColor(0, 0, 255);
+
+let font = parseBMF(new Resource("OpenSans-Semibold-16.bf4"));
+let text = "Press button A to set Time";
+let textWidth = render.getTextWidth(text, font);
+let x = 1;
+let y = 1;
+
+render.begin();
+render.fillRectangle(blue, 0, 0, render.width, render.height);
+render.end();
+
+Timer.repeat(id => {
+	let now = rtc.seconds;
+	let e = new Date(now * 1000);
+	text = e.toString();
+	render.begin(0, y, render.width, font.height);
+	render.fillRectangle(blue, 0, 0, render.width, render.height);
+	render.drawText(e.toString().slice(4,24), font, white, x, y);
+	render.end();
+}, 1000);

examples/drivers/m5stickc-rtc/manifest.json

@@ -0,0 +1,29 @@
+{
+	"config": {
+		"rotation": 90
+	},
+	"include": [
+		"$(MODDABLE)/examples/manifest_base.json",
+		"$(MODDABLE)/examples/manifest_net.json",		
+		"$(MODULES)/pins/i2c/manifest.json",
+		"$(MODDABLE)/examples/manifest_commodetto.json"
+	],
+	"modules": {
+		"pins/smbus": "$(MODULES)/pins/smbus/smbus",
+		"*": [
+			"$(MODULES)/drivers/rtc/rtc",
+			"$(MODULES)/drivers/rtc/bm8563",
+			"$(MODULES)/network/sntp/*",
+			"./main"
+		]
+	},
+	"resources": {
+		"*-mask": "$(MODDABLE)/examples/assets/fonts/OpenSans-Semibold-16"
+	},
+	"preload": [
+		"sntp",
+		"bm8563",
+		"rtc",
+		"smbus"
+	]	
+}

examples/drivers/readme.md

@@ -112,6 +112,12 @@ Reads the [Adafruit LIS3DH Triple-Axis Accelerometer](https://www.adafruit.com/p
 
 ***
 
+### [`m5stickc-rtc`](./m5stickc-rtc)
+
+[Commodetto](../../documentation/commodetto/commodetto.md) app for the [M5Stick-C](https://www.adafruit.com/product/4290). Demonstrates using the RTC BM8563 on the version 2 of the hardware.
+
+***
+
 ### [`mcp23008`](./mcp23008)
 
 Leverages the [MCP23008 GPIO expander](https://www.adafruit.com/product/593) to control multiple LEDs from a single I<sup>2</sup>C device.

modules/drivers/rtc/bm8563.js

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2016-2020  Moddable Tech, Inc.
+ *
+ *   This file is part of the Moddable SDK Runtime.
+ * 
+ *   The Moddable SDK Runtime is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ * 
+ *   The Moddable SDK Runtime is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Lesser General Public License for more details.
+ * 
+ *   You should have received a copy of the GNU Lesser General Public License
+ *   along with the Moddable SDK Runtime.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+	bm8563 realtime clock
+	(c) Wilbeforce 2020
+*/
+
+import RTC from "rtc";
+
+const BM8563_ADDR = 0x51;
+const BM8563_CONTROL_STATUS1 = 0x00;
+const BM8563_CONTROL_STATUS2 = 0x01;
+const BM8563_SECONDS = 0x02;
+const BM8563_CENTURY_BIT = 0b10000000;
+const BM8563_STOP = 0b00100000;
+
+class BM8563 extends RTC {
+	constructor(dictionary) {
+		super(Object.assign({
+			address: BM8563_ADDR
+		}, dictionary));
+		// Status reset (twice)
+		super.writeByte(BM8563_CONTROL_STATUS1, 0x00);
+		super.writeByte(BM8563_CONTROL_STATUS1, 0x00);
+		// Status2 reset
+		super.writeByte(BM8563_CONTROL_STATUS2, 0x00);
+
+	}
+
+	get _enabled() {
+		return (super.readByte(BM8563_CONTROL_STATUS1) & BM8563_STOP) != 0;
+	}
+
+	set _enabled(e) {
+		let c = e ? 0 : BM8563_STOP;
+		super.writeByte(BM8563_CONTROL_STATUS1, c);
+	}
+
+	_getDate() {
+		let date = {};
+		this.block = super.readBlock(BM8563_SECONDS, 7);
+		let century = (this.block[5] & BM8563_CENTURY_BIT) ? 100 : 0;
+		date.year = this.bcdToDec(this.block[6]) + century + 1900; // year
+		date.month = this.bcdToDec(this.block[5] & 0b00011111); // month
+		date.date = this.bcdToDec(this.block[3]); // day
+		date.seconds = this.bcdToDec(this.block[0] & 0x7f); // seconds
+		date.minutes = this.bcdToDec(this.block[1]); // minutes
+		date.hours = this.bcdToDec(this.block[2] & 0x3f); // hours
+		return date;
+	}
+
+	_setDate(date) {
+		let buf = new ArrayBuffer(7 * 1);
+		let bytes = new Uint8Array(buf);
+
+		bytes[0] = this.decToBcd(date.seconds);
+		bytes[1] = this.decToBcd(date.minutes);
+		bytes[2] = this.decToBcd(date.hours);
+		bytes[3] = this.decToBcd(date.date);
+		bytes[4] = this.decToBcd(date.dow);
+		bytes[5] = this.decToBcd(date.month);
+		if (date.year >= 100) {
+			bytes[5] |= BM8563_CENTURY_BIT;
+		}
+		bytes[6] = this.decToBcd(date.year % 100);
+
+		super.writeBlock(BM8563_SECONDS, buf);
+	}
+
+}
+Object.freeze(BM8563.prototype);
+
+export default BM8563;

modules/drivers/rtc/manifest.json

@@ -1,20 +1,35 @@
 {
+	"config": {
+		"wifi2": {
+			"ssid": "rhys",
+			"password": "jeered3242"
+		},
+		"wifi": {
+			"ssid": "Guess",
+			"password": "Guest-963"
+		},
+	}
 	"include": [
+		"$(MODDABLE)/examples/manifest_base.json",		
 		"$(MODULES)/pins/i2c/manifest.json"
 	],
 	"modules": {
 		"pins/smbus": "$(MODULES)/pins/smbus/smbus",
 		"*": [
+			"$(MODULES)/network/sntp/*",
 			"$(MODULES)/drivers/rtc/rtc",
 			"$(MODULES)/drivers/rtc/ds1307",
 			"$(MODULES)/drivers/rtc/ds3231",
-			"$(MODULES)/drivers/rtc/rv3028"
+			"$(MODULES)/drivers/rtc/rv3028",
+			"$(MODULES)/drivers/rtc/bm8563"
 		]
 	},
 	"preload": [
+		"sntp",
 		"ds1307",
 		"ds3231",
 		"rv3028",
+		"bm8563",
 		"rtc",
 		"smbus"
 	]