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19 changed files with 93 additions and 137 deletions

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@ -9,8 +9,9 @@ basic.showNumber(0);
input.onButtonPressed(Button.A, () => {
});
led.plot(0, 0);
music.playTone(0, 0);
led.plot(0, 0);
radio.sendNumber(0);
game.addScore(1);
images.createImage(`
. . . . .

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@ -1,6 +1,6 @@
# Show Animation
Show a series of image frames on the [LED screen](/device/screen), pausing the specified time after each frame.
Show a group of image frames (pictures) one after another on the [LED screen](/device/screen). It pauses the amount of time you tell it after each frame.
```sig
basic.showAnimation(`
@ -14,10 +14,14 @@ basic.showAnimation(`
### Parameters
* `leds` - [String](/reference/types/string); a series of LED on/off states
* `interval` - [Number](/reference/types/number); the number of milliseconds to pause after each image frame
* `leds` is a [String](/reference/types/string) that shows which LEDs are on and off, in groups one after another.
* `interval` is an optional [Number](/reference/types/number). It means the number of milliseconds to pause after each image frame.
### Show a series of image frames
### Example: Animating a group of image frames
In this animation, each row is 15 spaces wide because
there are three frames in the animation, and each frame is
five spaces wide, just like the screen on the BBC micro:bit.
```
basic.showAnimation(`
@ -31,13 +35,17 @@ basic.showAnimation(`
### ~hint
If the series of images appear too fast, increase the value of the *interval* parameter.
If the animation is too fast, make `interval` bigger.
### ~
### Example: animating frames
### Example: animating frames with a pause
The following example creates an image with six frames and then shows each frame o the screen, pausing 500 milliseconds after each frame:
This example shows six frames on the screen, pausing 500 milliseconds after each frame.
In this animation, each row is 30 spaces wide because
there are six frames in the animation, and each frame is
five spaces wide, just like the screen.
```
basic.showAnimation(`
@ -51,7 +59,7 @@ basic.showAnimation(`
### ~hint
Use [forever](/reference/basic/forever) to continually repeat an animation
Use [forever](/reference/basic/forever) to show an animation over and over.
### ~

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@ -15,12 +15,13 @@ basic.showLeds(`
### Parameters
* ``leds`` - a series of LED on/off states that form an image (see steps below)
* (optional) ``ms`` - [Number](/reference/types/number) - time to wait after displaying image. In blocks, ``ms`` is 400 by default.
* `leds` is a [String](/reference/types/string) that shows which LEDs are on and off.
* `ms` is an optional [Number](/reference/types/number) that shows how many milliseconds to wait after showing a picture.
If you are programming with blocks, `ms` starts out as 400 milliseconds.
### Example - Block Editor
### Example
1. Open the `basic` category and select the `show leds` blocks.
Open the `basic` card in the Block Editor and select the `show leds` blocks.
```blocks
basic.showLeds(`
@ -33,7 +34,7 @@ basic.showLeds(`
)
```
In JavaScript, the led off is represented by a `.` and the led on by a `#` character.
If you are programming in JavaScript, `#` means an LED that is turned on and `.` means an LED that is turned off.
### Lessons

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@ -1,6 +1,6 @@
# Show Number
Show a number on the [LED screen](/device/screen), one digit at a time (scrolling from left to right)
Show a number on the [LED screen](/device/screen). It will slide left if it has more than one digit.
~~~~sig
basic.showNumber(2, 150)
@ -8,18 +8,18 @@ basic.showNumber(2, 150)
### Parameters
* value - a [Number](/reference/types/number)
* (optional) interval (ms) - [Number](/reference/types/number); the time (in milliseconds) before scrolling by one LED; the larger the number, the slower the scroll
* `value` is a [Number](/reference/types/number).
* `interval` is an optional [Number](/reference/types/number). It means the number of milliseconds before sliding the `value` left by one LED each time. Bigger intervals make the sliding slower.
### ~
### Examples:
To display the number 10:
To show the number 10:
~~~~blocks
basic.showNumber(10)
~~~~
To display the number stored in the `x` variable:
To show the number stored in a variable:
~~~~blocks
let x = 1
@ -28,19 +28,19 @@ basic.showNumber(x)
### Example: count to 5
This example uses a [for](/reference/loops/for) loop to show numbers ``1`` through ``5`` on the screen:
This example uses a [for](/reference/loops/for) loop to show numbers ``0`` through ``5`` on the screen:
~~~~blocks
for (let i = 0; i < 5; i++) {
basic.showNumber(i + 1)
for (let i = 0; i < 6; i++) {
basic.showNumber(i)
basic.pause(200)
}
~~~~
### Other show functions
* use [show string](/reference/basic/show-string) to show a string on the screen
* use [show animation](/reference/basic/show-animation) to show a series of images on the screen
* Use [show string](/reference/basic/show-string) to show a [String](/reference/types/string) with letters on the screen.
* Use [show animation](/reference/basic/show-animation) to show a group of pictures on the screen, one after another.
### Lessons

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@ -1,6 +1,6 @@
# Show String
Show a string on the [LED screen](/device/screen) one character at a time (scrolling from left to right).
Show a number on the [LED screen](/device/screen). It will slide left if it is bigger than the screen.
```sig
basic.showString("Hello!")
@ -8,18 +8,18 @@ basic.showString("Hello!")
### Parameters
* `text` - a [String](/reference/types/string)
* (optional) `ms` - [Number](/reference/types/number); the time (in milliseconds) before scrolling left by one LED; the larger the number, the slower the scroll
* `text` is a [String](/reference/types/string). It can contain letters, numbers, and punctuation.
* `ms` is an optional [Number](/reference/types/number). It means the number of milliseconds before sliding the [String](/reference/types/string) left by one LED each time. Bigger intervals make the sliding slower.
### Examples:
To display Hello:
To show the word **Hello**:
```blocks
basic.showString("Hello")
```
To display the content of a string variable:
To show what is stored in a [String](/reference/types/string) variable:
```blocks
let s = "Hi"
@ -28,8 +28,8 @@ basic.showString(s)
### Other show functions
* use [show number](/reference/basic/show-number) to show a number on the screen
* use [show animation](/reference/basic/show-animation) to show a series of images on the screen
* Use [show number](/reference/basic/show-number) to show a number on the [LED screen](/device/screen).
* Use [show animation](/reference/basic/show-animation) to show a group of pictures on the screen, one after another.
### Lessons

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@ -1,39 +1,9 @@
# Logic
[if](/reference/logic/if)
```blocks
if(true) {
}
```
[Boolean](/reference/types/boolean) values: *true*; *false*
```blocks
true
false
```
Boolean binary operators: *and* (conjunction); *or* (disjunction)
```blocks
```cards
if(true) {}
true;
true && false;
true || false;
```
Boolean negation operator
```blocks
!true
```
Comparison operators (=, !=, <, >, <=, >=)
```blocks
0 == 0;
1 !- 0;
0 < 1;
1 > 0;
0 <= 1;
1 >= 0;
!true;
1 != 0;
```

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@ -1,23 +1,26 @@
# If
Run code based on a condition.
### @parent blocks/language
Conditionally run code depending on whether a [Boolean](/reference/types/boolean) condition is true or false.
### Block Editor
![](/static/mb/hourofcode-0.png)
```blocks
if(true) {
}
```
In the Block Editor, click on the dark blue gear icon (see above) to add an *else* or *if* to the current block.
### Example: adjusting screen brightness
![](/static/mb/blocks/game-library/pic0.png)
```blocks
if(input.lightLevel()<100){
led.setBrightness(255);
}
```
If the screen [brightness](/reference/led/brightness) is `< 100`, this code sets the brightness to `255`:
If the [light level](/input/light-level) is `< 100`, this code sets the brightness to `255`:
### Lessons

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@ -1,26 +1,8 @@
# Loops
Repeat code.
[for](/reference/loops/for)
```blocks
```cards
for(let i = 0;i<5;i++) {}
```
[repeat](/reference/loops/repeat)
![](/static/mb/blocks/contents-0.png)
[while](/reference/loops/while)
```blocks
for(let i = 1;i<5;i++) {}
while(true) {}
```
[forever](/reference/basic/forever)
```blocks
basic.forever(() => {})
```

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@ -1,15 +1,13 @@
# For
Repeat code a preset number of times.
### @parent blocks/language
Repeat code a fixed number of times.
### Block Editor
![](/static/mb/events-0.png)
```blocks
for(let i = 0; i < 5; ++i) {
}
```
The Block Editor *for* loop is different than the Touch Develop *for* loop in an important way. The above for loop will iterate *five* times, with the loop variable *i* taking on values 0, 1, 2, 3, and 4. The Touch Develop for loop shown below will iterate four times:

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@ -2,8 +2,6 @@
Repeat code a preset number of times.
Repeat code a fixed number of times.
### Block Editor
![](/static/mb/blocks/contents-0.png)

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@ -1,23 +1,14 @@
# While
Repeat code in a loop while a condition is true.
### @parent blocks/language
Repeat code while a [Boolean](/reference/types/boolean) `condition` is true.
### ~hide
```blocks
while(true) {
}
```
let condition = false
```
### ~
### Block Editor
![](/static/mb/string-0.png)
The while loop has a *condition* that evaluates to a [Boolean](/reference/types/boolean) value. After the `do` keyword, add the code that you want to run while the `condition` is `true`. The while loop concludes with `end while`.
@ -27,11 +18,13 @@ The condition is tested before any code runs. Which means that if the condition
The following example uses a while loop to make a diagonal line on the LED screen (points `0, 0`, `1, 1`, `2, 2`, `3, 3`, `4, 4`).
// index is set to 4
![](/static/mb/blocks/var-10.png)
// subtract 1 from `index` each time through loop
```blocks
let index = 4;
while(index >= 0) {
led.plot(index, index);
index--;
}
```
### Lessons

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@ -16,5 +16,5 @@ radio.receivedSignalStrength();
radio.setGroup(0);
radio.setTransmitPower(0);
radio.writeValueToSerial();
radio.setTransmitSerialNumber();
radio.setTransmitSerialNumber(true);
```

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@ -3,6 +3,9 @@
Reading and writing data over a serial connection.
```cards
serial.writeValue(x, 0);
serial.writeLine("");
serial.writeNumber(0);
serial.writeValue(x, 0);
serial.writeString("");
serial.readLine();
```

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@ -93,6 +93,9 @@
"radio.setTransmitSerialNumber": "Set the radio to transmit the serial number in each message.",
"radio.writeValueToSerial": "Reads a value sent with `stream value` and writes it\nto the serial stream as JSON",
"serial": "Reading and writing data over a serial connection.",
"serial.readLine": "Reads a line of text from the serial port.",
"serial.writeLine": "Prints a line of text to the serial",
"serial.writeNumber": "Prints a numeric value to the serial",
"serial.writeString": "Sends a piece of text through Serial connection.",
"serial.writeValue": "Writes a ``name: value`` pair line to the serial."
}

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@ -28,8 +28,8 @@ namespace serial {
* Registers an event to be fired when one of the delimiter is matched
* @param delimiters the characters to match received characters against. eg:"\n"
*/
//% help=serial/on-data-received
//% weight=19
// help=serial/on-data-received
// weight=19
void onDataReceived(StringData* delimiters, Action body) {
uBit.serial.eventOn(ManagedString(delimiters));
registerWithDal(MICROBIT_ID_SERIAL, MICROBIT_SERIAL_EVT_DELIM_MATCH, body);

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@ -39,10 +39,10 @@ namespace serial {
/**
* Registers an event to be fired when a line has been received
*/
//% help=serial/on-line-received
//% blockId=serial_on_line_received block="serial on line received"
//% weight=21 blockGap=8
// help=serial/on-line-received
// blockId=serial_on_line_received block="serial on line received"
// weight=21 blockGap=8
export function onLineReceived(body: Action): void {
serial.onDataReceived("\n", body);
// serial.onDataReceived("\n", body);
}
}

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@ -575,14 +575,6 @@ declare namespace serial {
//% weight=87
//% blockId=serial_writestring block="serial write string %text" shim=serial::writeString
function writeString(text: string): void;
/**
* Registers an event to be fired when one of the delimiter is matched
* @param delimiters the characters to match received characters against. eg:"\n"
*/
//% help=serial/on-data-received
//% weight=19 shim=serial::onDataReceived
function onDataReceived(delimiters: string, body: () => void): void;
}

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@ -1,6 +1,6 @@
{
"name": "pxt-microbit",
"version": "0.2.124",
"version": "0.2.125",
"description": "BBC micro:bit target for PXT",
"keywords": [
"JavaScript",
@ -29,6 +29,6 @@
"typescript": "^1.8.7"
},
"dependencies": {
"pxt-core": "0.2.130"
"pxt-core": "0.2.131"
}
}

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@ -430,6 +430,10 @@ namespace pxsim.serial {
return board().readSerial();
}
export function readLine(): string {
return board().readSerial();
}
export function onDataReceived(delimiters: string, handler: RefAction) {
let b = board();
b.bus.listen(DAL.MICROBIT_ID_SERIAL, DAL.MICROBIT_SERIAL_EVT_DELIM_MATCH, handler);