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

This commit is contained in:
Amerlander
2019-12-02 05:58:26 +01:00
committed by Peli de Halleux
parent 38a964516e
commit 5c114a0c57
1261 changed files with 50692 additions and 21604 deletions

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@ -1,20 +1,31 @@
# Write Value
# write Value
Write a name/value pair and a newline character (`\r\n`) to the [serial](/device/serial) port.
Write a **name:value** pair and a newline character (`\r\n`) to the [serial](/device/serial) port.
```sig
serial.writeValue("x", 0);
```
### Parameters
It is common when reporting or recording data to use a _Name Value Pair_ (NVP). They appear as a text output string in the form of a _name_ and a _value_ together. The name and the value are separated in the string with a _colon_, `:`. A name value pair reporting a temperature of `-15` degrees could look like:
* `name` is the [string](/reference/types/string) to write to the serial port
* `value` is the [number](/reference/types/number) to write to the serial port
``temperature:-15``
Associating a name with a value helps to identify related data when different data sources are recorded. For example, if you're reporting both temperature and light intensity, the _name:value_ format helps spreadsheets or other data analysis programs distinguish between them and group the same types of values together properly. Reporting two data sources might look like this in the output:
```
temperature:-15
temperature:-12
light:154
temperature:-11
light:152
```
## Parameters
### Example: streaming data
* `name` is the [string](/types/string) to write to the serial port
* `value` is the [number](/types/number) to write to the serial port
## Example: streaming data
Every 10 seconds, the example below sends the temperature and light level
to the serial port.
@ -27,15 +38,15 @@ basic.forever(() => {
})
```
#### ~hint
### ~hint
The [send value](/reference/radio/send-value) function broadcasts
string/number pairs. You can use a second @boardname@ to receive them,
and then send them directly to the serial port with ``write value``.
#### ~
### ~
### See also
## See also
[serial](/device/serial),
[serial write line](/reference/serial/write-line),