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9 Commits
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@ -34,7 +34,7 @@ Just like Arduino, the micro:bit can be connected to and interact with sensors,
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The student can program the BBC micro:bit using [visual blocks](http://www.github.com/Google/blockly) or JavaScript.
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```blocks
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basic.showString("BBC micro:bit!");
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basic.showString("Hi!");
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```
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## Compile and Flash
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@ -54,5 +54,10 @@ The simulator has support for the LED screen, buttons, as well as compass, accel
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The [C++ BBC micro:bit runtime](http://lancaster-university.github.io/microbit-docs/), created at [Lancaster University](http://www.lancaster.ac.uk/), provides access to the hardware functions of the micro:bit,
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as well as a set of helper functions (such as displaying a number/image/string on the LED screen).
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The JavaScript micro:bit library mirrors the functions of the C++ library.
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When code is compiled to ARM machine code, the calls to JavaScript micro:bit functions are replaced with calls to the corresponding C++ functions.
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## Open Source
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The editor for the BBC micro:bit is [open source](/open-source) on GitHub. Contributors are welcome!
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@ -1,7 +1,5 @@
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# micro:bit - the device
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The micro:bit device
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The micro:bit is a very capable device with many components:
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* [the USB connector](/device/usb)
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@ -1,7 +1,5 @@
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# The micro:bit - a reactive system
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The micro:bit is a reactive system.
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### Computing systems
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What sort of a *computing system* is the micro:bit?
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@ -11,16 +11,35 @@ input.onButtonPressed(Button.A, () => {
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})
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```
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Data is also automatically streamed to serial by the ** bar graph** block
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and picked up by the editor. This data can be streamed to the cloud as well.
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```blocks
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basic.forever(() => {
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led.plotBarGraph(input.acceleration(Dimension.X), 0);
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});
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```
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## How to read the micro:bit's serial output from your computer
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Unfortunately, using the serial library requires quite a bit of a setup.
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### BBC micro:bit Chrome Extension
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If you are using the Google Chrome browser, you can use our extension to get serial data streaming in the editor.
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* Install the [Extension for BBC micro:bit](https://chrome.google.com/webstore/detail/extension-for-bbc-microbi/cihhkhnngbjlhahcfmhekmbnnjcjdbge?hl=en-US) on the Chrome Web Store.
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* Restart Chrome and open the web editor.
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### Windows
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You must install a device driver (for the computer to recognize the serial interface of the micro:bit); then, you must also install a terminal emulator (which is going to connect to the micro:bit and read its output). Here's how to do it:
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* Follow instructions at https://developer.mbed.org/handbook/Windows-serial-configuration in order to install the device driver
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* Install a terminal emulator; we recommend [Tera Term](https://ttssh2.osdn.jp/index.html.en). At the time of this writing, the latest version is 4.88 and can be downloaded [from here](http://en.osdn.jp/frs/redir.php?m=jaist&f=%2Fttssh2%2F63767%2Fteraterm-4.88.exe). Follow the instructions from the installer.
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#### Windows > Tera Term
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* Install the terminal emulator [Tera Term](https://ttssh2.osdn.jp/index.html.en). At the time of this writing, the latest version is 4.88 and can be downloaded [from here](http://en.osdn.jp/frs/redir.php?m=jaist&f=%2Fttssh2%2F63767%2Fteraterm-4.88.exe). Follow the instructions from the installer.
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Once both the driver and the terminal emulator are installed, plug in the micro:bit and wait until the device is fully setup. Then, open TeraTerm.
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@ -32,7 +51,7 @@ You should be good. Feel free to hit `Setup` > `Save Setup` in the menus to eras
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Please note that Windows will assign you a different COM port if you plug in another micro:bit. If you're juggling between micro:bits, you'll have to change the COM port every time.
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### Alternative Windows setup with Putty
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#### Windows > Putty
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If you prefer another terminal emulator (such as [PuTTY](http://www.putty.org/)), here are some instructions.
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@ -4,6 +4,6 @@ The editor is open source on GitHub under the MIT license. Contributions are wel
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### Repos
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* [microsoft/pxt-microbit](https://github.com/Microsoft/pxt-microbit), PXT target for BBC micro:bit, also includes the documentation.
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* [microbit/pxt](https://github.com/Microsoft/pxt), programming experience toolkit (PXT)
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* [microsoft/pxt-microbit](https://github.com/Microsoft/pxt-microbit), PXT target for BBC micro:bit
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* [microsoft/pxt-microbit-core](https://github.com/Microsoft/pxt-microbit-core), Yotta module used to build the BBC micro:bit runtime
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@ -1,27 +1,35 @@
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# Magnetic Force
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Get the magnetic force (micro Teslas), in one of three specified dimensions.
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Find the amount of magnetic force (the strength of a magnet) in the direction you say.
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```sig
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input.magneticForce(Dimension.X);
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```
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## ~hint
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The micro:bit measures magnetic force with **microteslas**.
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## ~
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### Parameters
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* dimension : [String](/reference/types/string) - one of three values specifying the axis of the force: ``x`` (left/right); ``y`` (forward/backwards); ``z`` (up/down); ``strength`` (the length of the vector)
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* a [string](/reference/types/string) that says which direction the micro:bit should measure magnetic force in: either `x` (the left-right direction), `y` (the forward/backward direction), or `z` (the up/down direction)
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### Returns
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* [Number](/reference/types/number) - magnetic force, in micro-Teslas.
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* a [number](/reference/types/number) of microteslas that means the strength of the magnet
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### Example: metal detector
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The following example uses the `magnetic force` to control the brightness of the screen. When the magnetic force increases, the center LED will appear brighter.
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This program makes the center LED of the micro:bit get brighter when
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the magnetic force is stronger, and dimmer when it is weaker.
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```blocks
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led.plot(2, 2)
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basic.forever(() => {
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let f = input.magneticForce(Dimension.X)
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let f = input.magneticForce("x")
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led.setBrightness(f / 2000)
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})
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```
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@ -29,4 +37,3 @@ basic.forever(() => {
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### See also
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[compass heading](/reference/input/compass-heading)
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@ -1,19 +1,17 @@
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# On Gesture
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Register an [event handler](/reference/event-handler) that will execute whenever the user executes a gesture withthe BBC micro:bit.
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Start an [event handler](/reference/event-handler) (part of the
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program that will run when something happens) This handler works when
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you do a **gesture** (like shake, tilt, or drop the micro:bit).
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```sig
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input.onGesture(Gesture.Shake,() => {
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})
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```
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## Gestures
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## Example: random number
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### Example: random number
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The following example displays a number from 0-9 on the screen when you shake the BBC micro:bit.
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This program shows a number from `0` to `9` when you shake the micro:bit.
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```blocks
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input.onGesture(Gesture.Shake,() => {
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@ -22,24 +20,7 @@ input.onGesture(Gesture.Shake,() => {
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})
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```
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### Example: rock, paper, scissors
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## Lessons
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The following example shows one of three images (rock, paper, or scissors) when you shake the BBC micro:bit.
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```blocks
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input.onGesture(Gesture.Shake,() => {
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let img = images.createImage(`
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. . . . . # # # # # . . . . #
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. # # # . # . . . # # # . # .
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. # # # . # . . . # . # # . .
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. # # # . # . . . # # # . # .
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. . . . . # # # # # . . . . #
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`)
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img.showFrame(Math.random(3))
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})
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```
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### Lessons
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[bounce image](/lessons/bounce-image), [rock paper scissors](/lessons/rock-paper-scissors)
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[bounce image](/lessons/bounce-image)
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@ -1,24 +1,33 @@
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# Pin Is Pressed
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Gets the pin state (pressed or not pressed), by detecting when the user holds the `GND` pin with one hand, and presses pin `0`, `1`, or `2` with the other hand, thus completing a circuit.
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Find whether the pin you say is pressed or not pressed.
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*Note* that this function works best when the BBC micro:bit is powered by AAA battery.
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If you hold the `GND` pin with one hand and touch pin `0`, `1`, or `2` with the other,
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a very small (safe) amount of electricity will flow through your body and back into
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the micro:bit. This is called **completing a circuit**. It's like you're a big wire!
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```sig
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input.pinIsPressed(TouchPin.P0);
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```
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## ~hint
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This function works best when the BBC:microbit is using batteries for power,
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instead of the USB cable.
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## ~
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### Parameters
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* name - [String](/reference/types/string); the pin name ("P0", "P1", or "P2")
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* a [string](/reference/types/string) that holds the pin name (**P0**, **P1**, or **P2**)
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### returns
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* [Boolean](/reference/types/boolean) - `true` if pressed, `false` if not pressed
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* a [boolean](/reference/types/boolean) that means whether the pin you say is pressed (`true` or `false`)
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### Example
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This example displays 1 if P0 is pressed, and 0 if P0 is not pressed:
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This program shows `1` if `P0` is pressed, and `0` if `P0` is not pressed:
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```blocks
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basic.forever(() => {
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{
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"name": "pxt-microbit",
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"version": "0.2.156",
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"version": "0.2.157",
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"description": "BBC micro:bit target for PXT",
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"keywords": [
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"JavaScript",
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@ -29,6 +29,6 @@
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"typescript": "^1.8.7"
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},
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"dependencies": {
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"pxt-core": "0.2.168"
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"pxt-core": "0.2.170"
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}
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}
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@ -188,7 +188,7 @@ namespace pxsim.micro_bit {
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if (text) text.textContent = (pin.period ? "~" : "") + (pin.value || 0) + "";
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}
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else if (pin.mode & PinFlags.Digital) {
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v = pin.value > 0 ? '0%' : '100%';
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v = pin.value > 0 ? "0%" : "100%";
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if (text) text.textContent = pin.value > 0 ? "1" : "0";
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}
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else if (pin.mode & PinFlags.Touch) {
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@ -382,7 +382,13 @@ svg.sim.grayscale {
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stroke:grey;
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stroke-width: 3px;
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}
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.sim-button-nut {
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fill:#704A4A;
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pointer-events:none;
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}
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.sim-button-nut:hover {
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stroke:1px solid #704A4A;
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}
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.sim-pin:hover {
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stroke:#D4AF37;
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stroke-width:2px;
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@ -564,17 +570,29 @@ svg.sim.grayscale {
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return lg;
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})
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this.pinTexts = [67, 165, 275].map(x => <SVGTextElement>svg.child(this.g, "text", { class: 'sim-text-pin', x: x, y: 345 }));
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this.pinTexts = [67, 165, 275].map(x => <SVGTextElement>svg.child(this.g, "text", { class: "sim-text-pin", x: x, y: 345 }));
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this.buttonsOuter = []; this.buttons = [];
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this.buttonsOuter.push(svg.path(this.g, "sim-button-outer", "M82.1,232.6H25.9c-0.5,0-1-0.4-1-1v-56.2c0-0.5,0.4-1,1-1h56.2c0.5,0,1,0.4,1,1v56.2C83,232.2,82.6,232.6,82.1,232.6", "A"));
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const outerBtn = (left: number, top: number) => {
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const btnr = 4;
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const btnw = 56.2;
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const btnn = 6;
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const btnnm = 10
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this.buttonsOuter.push(svg.child(this.g, "rect", { class: "sim-button-outer", x: left, y: top, rx: btnr, ry: btnr, width: btnw, height: btnw }));
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svg.child(this.g, "circle", { class: "sim-button-nut", cx: left + btnnm, cy: top + btnnm, r: btnn });
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svg.child(this.g, "circle", { class: "sim-button-nut", cx: left + btnnm, cy: top + btnw - btnnm, r: btnn });
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svg.child(this.g, "circle", { class: "sim-button-nut", cx: left + btnw - btnnm, cy: top + btnw - btnnm, r: btnn });
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svg.child(this.g, "circle", { class: "sim-button-nut", cx: left + btnw - btnnm, cy: top + btnnm, r: btnn });
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}
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outerBtn(25.9, 176.4);
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this.buttons.push(svg.path(this.g, "sim-button", "M69.7,203.5c0,8.7-7,15.7-15.7,15.7s-15.7-7-15.7-15.7c0-8.7,7-15.7,15.7-15.7S69.7,194.9,69.7,203.5"));
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this.buttonsOuter.push(svg.path(this.g, "sim-button-outer", "M474.3,232.6h-56.2c-0.5,0-1-0.4-1-1v-56.2c0-0.5,0.4-1,1-1h56.2c0.5,0,1,0.4,1,1v56.2C475.3,232.2,474.8,232.6,474.3,232.6", "B"));
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outerBtn(418.1, 176.4);
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this.buttons.push(svg.path(this.g, "sim-button", "M461.9,203.5c0,8.7-7,15.7-15.7,15.7c-8.7,0-15.7-7-15.7-15.7c0-8.7,7-15.7,15.7-15.7C454.9,187.8,461.9,194.9,461.9,203.5"));
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this.buttonsOuter.push(svg.child(this.g, "rect", { class: "sim-button-outer", x: 417, y: 250, width: 58, height: 58, rx: 1, ry: 1, title: "A+B" }));
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outerBtn(417, 250);
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this.buttons.push(svg.child(this.g, "circle", { class: "sim-button", cx: 446, cy: 278, r: 16.5 }));
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(<any>this.buttonsOuter[2]).style.visibility = 'hidden';
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(<any>this.buttons[2]).style.visibility = 'hidden';
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(<any>this.buttonsOuter[2]).style.visibility = "hidden";
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(<any>this.buttons[2]).style.visibility = "hidden";
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svg.path(this.g, "sim-label", "M35.7,376.4c0-2.8,2.1-5.1,5.5-5.1c3.3,0,5.5,2.4,5.5,5.1v4.7c0,2.8-2.2,5.1-5.5,5.1c-3.3,0-5.5-2.4-5.5-5.1V376.4zM43.3,376.4c0-1.3-0.8-2.3-2.2-2.3c-1.3,0-2.1,1.1-2.1,2.3v4.7c0,1.2,0.8,2.3,2.1,2.3c1.3,0,2.2-1.1,2.2-2.3V376.4z");
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svg.path(this.g, "sim-label", "M136.2,374.1c2.8,0,3.4-0.8,3.4-2.5h2.9v14.3h-3.4v-9.5h-3V374.1z");
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|
@ -17,6 +17,8 @@
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||||
<Application Id="App" StartPage="https://m.pxt.io/">
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||||
<uap:ApplicationContentUriRules>
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||||
<uap:Rule Match="https://m.pxt.io/" Type="include" WindowsRuntimeAccess="all" />
|
||||
<uap:Rule Match="https://codemicrobit.com/" Type="include" WindowsRuntimeAccess="all" />
|
||||
<uap:Rule Match="https://codethemicrobit.com/" Type="include" WindowsRuntimeAccess="all" />
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||||
</uap:ApplicationContentUriRules>
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||||
<uap:VisualElements DisplayName="m.pxt.io" Description="Code editors for the BBC micro:bit" BackgroundColor="white" Square150x150Logo="images\Square150x150Logo.png" Square44x44Logo="images\Square44x44Logo.png">
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||||
<uap:DefaultTile Wide310x150Logo="images\Wide310x150Logo.png" ShortName="m.pxt.io">
|
||||
|
Reference in New Issue
Block a user