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Create bbn_m5atomS3_lite_whatsapp_web.ino
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@mgrouch
mgrouch authored Jan 27, 2025
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253 changes: 253 additions & 0 deletions bbn_m5atomS3_lite_whatsapp_web/bbn_m5atomS3_lite_whatsapp_web.ino
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/**
based on:
@file HTTP.ino
@author SeanKwok ([email protected])
@brief M5AtomS3 Atomic PoE Base HTTP Test
@version 0.1
@date 2023-12-13
@Hardware: M5AtomS3 + Atomic PoE Base
@Platform Version: Arduino M5Stack Board Manager v2.0.9
@Dependent Library:
M5GFX: https://github.com/m5stack/M5GFX
M5Unified: https://github.com/m5stack/M5Unified
M5AtomS3: https://github.com/m5stack/M5AtomS3
M5_Ethernet: https://github.com/m5stack/M5-Ethernet
*/

#include <M5AtomS3.h> // M5AtomLiteS3
//#include <M5Atom.h> // M5AtomLite

#include <SPI.h>
#include <M5_Ethernet.h>
#include <SSLClient.h>
#include <UrlEncode.h>
#include "trust_anchors.h"

#define SERVER "api.callmebot.com"

// M5AtomLiteS3
#define SCK 5
#define MISO 7
#define MOSI 8
#define CS 6

// M5AtomLite
//#define SCK 22
//#define MISO 23
//#define MOSI 33
//#define CS 19

byte mac[] = {0xDE, 0xAD, 0xBE, 0xDE, 0xCA, 0xDE}; // Host name will be WIZnetDECADE on local LAN (WIZnet + 3 last MAC octects)

EthernetServer server(80);

// Choose the analog pin to get semi-random data from for SSL
// Pick a pin that's not connected or attached to a randomish voltage source
const int rand_pin = 2; // 34 /* atom-lite */;

// Initialize the SSL client library
// We input an EthernetClient, our trust anchors, and the analog pin
EthernetClient base_client;
SSLClient ssl_client(base_client, TAs, (size_t)TAs_NUM, rand_pin);

// Variables to measure the speed
unsigned long beginMicros, endMicros;
unsigned long byteCount = 0;
bool printWebData = true; // set to false for better speed measurement


void header_page(EthernetClient client, int request_status = 200) {
client.println("HTTP/1.1 " + String(request_status) + " Not found");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 20"); // refresh the page automatically every 5 sec
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, user-scalable=no\"><title>Control LED</title><style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}body{margin-top: 50px;} h1 {color: #444444;margin: 50px auto 30px;} h3 {color: #444444;margin-bottom: 50px;}.button {display: block;width: 80px;background-color: #3498db;border: none;color: white;padding: 13px 30px;text-decoration: none;font-size: 25px;margin: 0px auto 35px;cursor: pointer;border-radius: 4px;}.button-on {background-color: #3498db;}.button-on:active {background-color: #2980b9;}.button-off {background-color: #34495e;}.button-off:active {background-color: #2c3e50;}p {font-size: 14px;color: #888;margin-bottom: 10px;}</style></head>");
client.println("<html><h1>ESP32 Web Server</h1><h3>Using Station Mode</h3>");
}

void footer_page(EthernetClient client) { // The closing lines of every page
client.println("</html>");
}

void handle_OnConnect(EthernetClient client) {
header_page(client);
client.println("<a class=\"button button-on\" href=\"/ledOn\">LOW</a>");
footer_page(client);
Serial.println("Connection!\nQ: OFF");
}

void handle_ledOn(EthernetClient client) {
header_page(client);
client.println("<a class=\"button button-on\" href=\"/ledOff\">HIGH</a>");
footer_page(client);
Serial.println("Q: ON");
}

void handle_ledOff(EthernetClient client) {
header_page(client);
client.println("<a class=\"button button-on\" href=\"/ledOn\">LOW</a>");
footer_page(client);
Serial.println("Q: OFF");
}

void handle_NotFound(EthernetClient client, String url) {
header_page(client, 400);
client.println("<a>The path " + url + " doesn't exist</a>");
Serial.println("Error, unrecognised path");
}

void setup() {
M5.begin();
Serial.begin(115200);

Serial.println("Initializing SPI...");
SPI.begin(SCK, MISO, MOSI, -1);
Serial.println("Initializing ethernet...");
Ethernet.init(CS);

while (Ethernet.begin(mac) != 1) {
Serial.println("Error getting IP address via DHCP, trying again...");
delay(2000);
}

// Check for Ethernet hardware present
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println(
"Ethernet shield was not found. Sorry, can't run without "
"hardware. :(");
while (true) {
delay(1); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF) {
Serial.println("Ethernet cable is not connected.");
}

Serial.print("Local IP : ");
Serial.println(Ethernet.localIP());
Serial.print("Subnet Mask : ");
Serial.println(Ethernet.subnetMask());
Serial.print("Gateway IP : ");
Serial.println(Ethernet.gatewayIP());
Serial.print("DNS Server : ");
Serial.println(Ethernet.dnsServerIP());

Serial.println("Ethernet Successfully Initialized");

// start the server
server.begin();
Serial.print("Server is at http://");
Serial.println(Ethernet.localIP());
}

// +international_country_code + phone number
// Portugal +351, example: +351912345678
String phoneNumber = "REPLACE_WITH_YOUR_PHONE_NUMBER";
String apiKey = "REPLACE_WITH_API_KEY";

String message = "Test from M5 ESP32";

void loop() {
M5.update();

// listen for incoming clients
EthernetClient client = server.available();
if (client) {
//Serial.println("new client");
String client_message = "";
int argument_reading = 0;

// An http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();

// get arguments. note: path arguments must not have any blank spaces
if (String(c) == " " || String(c) == "?") argument_reading++;
if (argument_reading == 1 && String(c) != " ") client_message = client_message + c;

// check end of request
if (c == '\n' && currentLineIsBlank) {
// Send response
// handle arguments
if (client_message == "/") handle_OnConnect(client);
else if (client_message == "/ledOn") handle_ledOn(client);
else if (client_message == "/ledOff") handle_ledOff(client);
else handle_NotFound(client, client_message);
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
} else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
//Serial.write("We're here");
}
}
}
// give the web browser time to receive the data
delay(4);
// close the connection:
client.stop();
}

if (M5.BtnA.wasPressed()) {
Serial.println("BtnA.wasPressed");
if (ssl_client.connect(SERVER, 443)) {
Serial.print("connected to ");
// Make a HTTP request:
ssl_client.println(String("GET ") + "/whatsapp.php?phone=" + phoneNumber + "&apikey=" + apiKey + "&text=" + urlEncode(message) + " HTTP/1.1");
ssl_client.println("Host: api.callmebot.com");
ssl_client.println("Connection: close");
ssl_client.println();
} else {
// if you didn't get a connection to the server:
Serial.println("connection failed");
}
beginMicros = micros();
}

if (ssl_client.connected()) {
// if there are incoming bytes available
// from the server, read them and print them:
int len;
while (len = ssl_client.available()) {
if (len > 0) {
byte buffer[80];
if (len > 80) len = 80;
ssl_client.read(buffer, len);
if (printWebData) {
Serial.write(buffer, len); // show in the serial monitor (slows some boards)
}
byteCount = byteCount + len;
}
delay(1);
}
}

// if the server's disconnected, stop the ssl_client:
if (!ssl_client.connected() && byteCount > 0) {
endMicros = micros();
Serial.println();
Serial.println("disconnecting.");
//ssl_client.stop();
Serial.print("Received ");
Serial.print(byteCount);
Serial.print(" bytes in ");
float seconds = (float)(endMicros - beginMicros) / 1000000.0;
Serial.print(seconds, 4);
float rate = (float)byteCount / seconds / 1000.0;
Serial.print(", rate = ");
Serial.print(rate);
Serial.print(" kbytes/second");
Serial.println();
byteCount = 0;
}
}

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