74 lines
3.4 KiB
Arduino
74 lines
3.4 KiB
Arduino
|
/*
|
||
|
|
3-Inkplate_VariPass_Graphs example for e-radionica Inkplate6
|
||
|
|
For this example you will need a micro USB cable, Inkplate6, and an available WiFi connection.
|
||
|
|
Select "Inkplate 6(ESP32)" from Tools -> Board menu.
|
||
|
|
Don't have "Inkplate 6(ESP32)" option? Follow our tutorial and add it:
|
||
|
|
https://e-radionica.com/en/blog/add-inkplate-6-to-arduino-ide/
|
||
|
|
|
||
|
|
This example will show you how you can use the API on the VariPass website to download and display
|
||
|
|
a sensor graph on the e-paper display.
|
||
|
|
|
||
|
|
VariPass is a website which allows you to host various online "variables" which you can write to
|
||
|
|
and read from using the VariPass API. This allows you to store sensor logs and later retrieve them
|
||
|
|
for graphing, analysis, etc.
|
||
|
|
This example uses an already public variable as an example. The graph is fed every minute with data
|
||
|
|
from Thorinair's (https://github.com/Thorinair/) geiger counter, so each startup of the Inkplate will
|
||
|
|
display updated values.
|
||
|
|
|
||
|
|
To learn more about VariPass and how you can use it for your own projects, please visit: https://varipass.org/
|
||
|
|
If you want to easily integrate the read/write functionality in your project, use the official library:
|
||
|
|
https://github.com/Thorinair/VariPass-for-ESP8266-ESP32
|
||
|
|
|
||
|
|
Want to learn more about Inkplate? Visit www.inkplate.io
|
||
|
|
Looking to get support? Write on our forums: http://forum.e-radionica.com/en/
|
||
|
|
23 July 2020 by e-radionica.com
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "Inkplate.h" //Include Inkplate library to the sketch
|
||
|
|
#include "WiFi.h" //Include library for WiFi
|
||
|
|
Inkplate display(INKPLATE_1BIT); //Create an object on Inkplate library and also set library into 1 Bit mode (Monochrome)
|
||
|
|
|
||
|
|
const char* ssid = "YourWiFiSSID"; //Your WiFi SSID
|
||
|
|
const char* password = "YourPass"; //Your WiFi password
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
display.begin(); //Init Inkplate library (you should call this function ONLY ONCE)
|
||
|
|
display.clearDisplay(); //Clear frame buffer of display
|
||
|
|
display.display(); //Put clear image on display
|
||
|
|
|
||
|
|
display.print("Connecting to WiFi...");
|
||
|
|
display.partialUpdate();
|
||
|
|
|
||
|
|
//Connect to the WiFi network.
|
||
|
|
WiFi.mode(WIFI_MODE_STA);
|
||
|
|
WiFi.begin(ssid, password);
|
||
|
|
while (WiFi.status() != WL_CONNECTED) {
|
||
|
|
delay(500);
|
||
|
|
display.print(".");
|
||
|
|
display.partialUpdate();
|
||
|
|
}
|
||
|
|
display.println("\nWiFi OK! Downloading...");
|
||
|
|
display.partialUpdate();
|
||
|
|
|
||
|
|
//Use a HTTP get request to fetch the graph from VariPass.
|
||
|
|
//The API expects a few parameters in the URL to allow it to work.
|
||
|
|
// action - Should be set to "sgraph" or "graph" in order to generate a compatible image.
|
||
|
|
// id - ID of the variable. It is enough to specify just the ID if the variable is public,
|
||
|
|
// but a "key" parameter should also be specified if not.
|
||
|
|
// width - Width of the generated graph, here set to half the Inkplate's width.
|
||
|
|
// height - Height of the generated graph, here set to half the Inkplate's height.
|
||
|
|
// eink - Should be set to true to generate a monochrome 1 bit bitmap better suitable for Inkplate.
|
||
|
|
// For more detailed explanation and more parameters, please visit the docs page: https://varipass.org/docs/
|
||
|
|
if(!display.drawBitmapFromWeb("https://api.varipass.org/?action=sgraph&id=kbg3eQfA&width=400&height=300&eink=true", 200, 150)) {
|
||
|
|
display.println("Image open error");
|
||
|
|
display.partialUpdate();
|
||
|
|
}
|
||
|
|
display.partialUpdate();
|
||
|
|
|
||
|
|
WiFi.mode(WIFI_OFF);
|
||
|
|
}
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
//Nothing...
|
||
|
|
}
|