2.1.28, initiation update to PXT v5.28.24 (#54)

docs/reference/serial/write-line.md

@@ -1,19 +1,21 @@
 # Serial Write Line
 
-Write a string to the [serial](/device/serial) port and start a new line of text
+Write a string to the [serial](/device/serial) port and start a new line of text 
 by writing `\r\n`.
 
 ```sig
 serial.writeLine("");
 ```
 
-### Parameters
+## Parameters
 
-* `text` is the [string](/reference/types/string) to write to the serial port
+* `text` is the [string](/types/string) to write to the serial port
 
-### Example: simple serial
+## Examples
 
-This program writes the word `BOFFO` to the serial port repeatedly.
+### Simple serial
+
+Write the word `BOFFO` to the serial port repeatedly.
 
 ```blocks
 basic.forever(() => {
@@ -22,29 +24,37 @@ basic.forever(() => {
 });
 ```
 
-### Example: streaming data
+### Streaming data
 
-This program checks the
-[compass heading](/reference/input/compass-heading) and sends the
-direction to the serial port repeatedly.
+Check the [compass heading](/reference/input/compass-heading) and show the direction on the screen. Also, send both the direction and degree heading to the serial port.
 
 ```blocks
+let degrees = 0
+let direction = ""
 basic.forever(() => {
-    let heading = input.compassHeading()
-    if (heading < 45) {
-        serial.writeLine("N");
-    } else if (heading < 135) {
-        serial.writeLine("E");
-    }
-    else if (heading < 225) {
-        serial.writeLine("S");
-    }
-    else {
-        serial.writeLine("W");
+    degrees = input.compassHeading()
+    if (degrees < 45) {
+        basic.showArrow(ArrowNames.North)
+        direction = "North"
+    } else if (degrees < 135) {
+        basic.showArrow(ArrowNames.East)
+        direction = "East"
+    } else if (degrees < 225) {
+        basic.showArrow(ArrowNames.South)
+        direction = "South"
+    } else if (degrees < 315) {
+        basic.showArrow(ArrowNames.West)
+        direction = "West"
+    } else {
+        basic.showArrow(ArrowNames.North)
+        direction = "North"
     }
+    serial.writeLine(direction + " @ " + degrees + " degrees")
+    basic.pause(500)
 })
 ```
-### See also
+
+## See also
 
 [serial](/device/serial),
 [serial write number](/reference/serial/write-number),