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Use link to example instead of including the example

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Fabian Affolter 2015-10-29 09:14:32 +01:00
parent 3da86f7677
commit 083825388e
1 changed files with 8 additions and 62 deletions
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source/_components/sensor.arest.markdown
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@ -50,69 +50,8 @@ Configuration variables:
- **correction_factor** (*Optional*): A float value to do some basic calculations.
- **decimal_places** (*Optional*): Number of decimal places of the value. Default is 0.
The variables in the `monitored_variables` array must be available in the response of the device. As a starting point you find below a sketch for the Arduino device family. There are two variables (`temperature` and `humidity`) which will act as endpoints.
The variables in the `monitored_variables` array must be available in the response of the device. As a starting point you could use the one of the example sketches (eg. [Ethernet](https://raw.githubusercontent.com/marcoschwartz/aREST/master/examples/Ethernet/Ethernet.ino) for an Arduino with Ethernet shield). In those sketches are two variables (`temperature` and `humidity`) available which will act as endpoints.
```c
/*
This modified sketch is based on the Ethernet example of the aREST
(http://arest.io/) library.
*/
// Libraries
#include <SPI.h>
#include <Ethernet.h>
#include <aREST.h>
#include <avr/wdt.h>
// Device settings
char* deviceId = "sensor02";
char* deviceName = "livingroom";
byte deviceMac[] = { 0x20, 0xD5, 0xD3, 0x03, 0xFE, 0x31 };
IPAddress deviceIp(192, 168, 1, 12);
EthernetServer server(80);
aREST rest = aREST();
// Variables to be exposed to the API
int temperature;
int humidity;
void setup(void) {
Serial.begin(57600);
// Init variables and expose them to REST API
temperature = 0;
humidity = 0;
rest.variable("temperature", &temperature);
rest.variable("humidity", &humidity);
// Give name and ID to device
rest.set_id(deviceId);
rest.set_name(deviceName);
Ethernet.begin(deviceMac, deviceIp);
server.begin();
Serial.print("Sensor is ready...");
// Start watchdog
wdt_enable(WDTO_4S);
}
void loop() {
EthernetClient client = server.available();
rest.handle(client);
wdt_reset();
// Replace this with your actual sensor readings, like
// temperature = (((analogRead(A0) * 5.0) / 1024) - 0.5) * 10;
temperature = random(400);
humidity = random(600);
delay(500);
}
```
Accessing one of the endpoints (eg. http://192.168.1.10/temperature) will give you the value inside a JSON response.
```json
@ -133,3 +72,10 @@ The root will give you a JSON response that contains all variables and their cur
}
```
`return_value` contains the sensor's data in a JSON response for a given pin (eg. http://192.168.1.10/analog/2/ or http://192.168.1.10/digital/7/).
```json
{"return_value": 34, "id": "sensor02", "name": "livingroom", "connected": true}
```