diff --git a/examples/3. Others/3-Inkplate_VariPass_Graphs/3-Inkplate_VariPass_Graphs.ino b/examples/3. Others/3-Inkplate_VariPass_Graphs/3-Inkplate_VariPass_Graphs.ino new file mode 100644 index 0000000..31eb6b2 --- /dev/null +++ b/examples/3. Others/3-Inkplate_VariPass_Graphs/3-Inkplate_VariPass_Graphs.ino @@ -0,0 +1,75 @@ +/* + 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)) { + //If is something failed (wrong filename or wrong bitmap format), write error message on the screen. + //REMEMBER! You can only use Windows Bitmap file with color depth of 1 or 24 bits with no compression! + display.println("Image open error"); + display.partialUpdate(); + } + display.partialUpdate(); + + WiFi.mode(WIFI_OFF); +} + +void loop() { + //Nothing... +}