mch2022-leds: add small example how to use TinyGo for the MCH2022 badge

Author: aykevl

mch2022-leds/LICENSE.txt

@@ -0,0 +1,27 @@
+Copyright (c) 2022 Ayke van Laethem. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of the copyright holder nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

mch2022-leds/README.md

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+# TinyGo example for the MCH2022 badge
+
+This is a very simple example how you can write a program for the MCH2022 badge using TinyGo.
+
+Compile it using the following command:
+
+    tinygo build -o main.bin -target=mch2022
+
+This creates a `main.bin` file, which is ready to be sent to the badge. You can do it like this:
+
+    python3 mch2022-template-app/tools/webusb_push.py "TinyGo LED example" main.bin --run
+
+You can find the file `webusb_push.py` [here](https://github.com/badgeteam/mch2022-tools/blob/bef7edfe709f89d9d601de7dde61b31fe5317854/webusb_push.py).

mch2022-leds/go.mod

@@ -0,0 +1,8 @@
+module github.com/aykevl/things/mch2022-leds
+
+go 1.18
+
+require (
+	github.com/aykevl/ledsgo v0.0.0-20220227114919-bd2e91bb77f2
+	tinygo.org/x/drivers v0.21.0
+)

mch2022-leds/go.sum

@@ -0,0 +1,28 @@
+github.com/aykevl/Go-simplex-noise v0.0.0-20191228011045-32260ebd32da h1:u4fP3+V+W/547R/P7ezR5gH2zucphUZfQLc1ypNaXOg=
+github.com/aykevl/Go-simplex-noise v0.0.0-20191228011045-32260ebd32da/go.mod h1:Bn4qAbkSY0k0/wrXdqQ8bWPTv/Uww3uIJuQv/knzDdQ=
+github.com/aykevl/ledsgo v0.0.0-20220227114919-bd2e91bb77f2 h1:NcmN0bjs7hmLKSARz88oxXF6OU50/d4Xeo5QWEE5y7w=
+github.com/aykevl/ledsgo v0.0.0-20220227114919-bd2e91bb77f2/go.mod h1:GDZBEY7gPGjvz/G3zLFirDcgbaN3nF4nvJ157+vnEro=
+github.com/bgould/http v0.0.0-20190627042742-d268792bdee7/go.mod h1:BTqvVegvwifopl4KTEDth6Zezs9eR+lCWhvGKvkxJHE=
+github.com/eclipse/paho.mqtt.golang v1.2.0/go.mod h1:H9keYFcgq3Qr5OUJm/JZI/i6U7joQ8SYLhZwfeOo6Ts=
+github.com/frankban/quicktest v1.10.2/go.mod h1:K+q6oSqb0W0Ininfk863uOk1lMy69l/P6txr3mVT54s=
+github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/kettek/apng v0.0.0-20191108220231-414630eed80f/go.mod h1:x78/VRQYKuCftMWS0uK5e+F5RJ7S4gSlESRWI0Prl6Q=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/valyala/fastjson v1.6.3/go.mod h1:CLCAqky6SMuOcxStkYQvblddUtoRxhYMGLrsQns1aXY=
+golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+tinygo.org/x/drivers v0.14.0/go.mod h1:uT2svMq3EpBZpKkGO+NQHjxjGf1f42ra4OnMMwQL2aI=
+tinygo.org/x/drivers v0.15.1/go.mod h1:uT2svMq3EpBZpKkGO+NQHjxjGf1f42ra4OnMMwQL2aI=
+tinygo.org/x/drivers v0.16.0/go.mod h1:uT2svMq3EpBZpKkGO+NQHjxjGf1f42ra4OnMMwQL2aI=
+tinygo.org/x/drivers v0.21.0 h1:4jasPGeHEo+clHqU2bothSYbmncc+u8nN0VMAmJ7IRg=
+tinygo.org/x/drivers v0.21.0/go.mod h1:uJD/l1qWzxzLx+vcxaW0eY464N5RAgFi1zTVzASFdqI=
+tinygo.org/x/tinyfont v0.2.1/go.mod h1:eLqnYSrFRjt5STxWaMeOWJTzrKhXqpWw7nU3bPfKOAM=
+tinygo.org/x/tinyfs v0.1.0/go.mod h1:ysc8Y92iHfhTXeyEM9+c7zviUQ4fN9UCFgSOFfMWv20=
+tinygo.org/x/tinyterm v0.1.0/go.mod h1:/DDhNnGwNF2/tNgHywvyZuCGnbH3ov49Z/6e8LPLRR4=

mch2022-leds/main.go

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+package main
+
+import (
+	"image/color"
+	"machine"
+	"time"
+
+	"github.com/aykevl/ledsgo"
+	"tinygo.org/x/drivers/ws2812"
+)
+
+func main() {
+	// Enable power to the LEDs
+	power := machine.PowerOn
+	power.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	power.High()
+
+	// Initialize the data pin.
+	led := machine.WS2812
+	led.Configure(machine.PinConfig{Mode: machine.PinOutput})
+
+	// Prepare the LED data slice to send.
+	ws := ws2812.New(led)
+	leds := make([]color.RGBA, 5)
+
+	// Update the data each cycle.
+	for {
+		now := time.Now()
+		for i := range leds {
+			leds[i] = ledsgo.Color{
+				H: uint16(i)*4096 + uint16(now.UnixNano()>>17),
+				S: 255,
+				V: 64,
+			}.Rainbow()
+		}
+		ws.WriteColors(leds)
+		time.Sleep(time.Second / 60)
+	}
+}