Updated to compile and work with ESP32 1.0.6

.gitignore

@@ -4,6 +4,9 @@ src/examples/*
 readme_for_me.md
 tools/
 lib/
+.\#*
+\#*\#
+*~
 
 .pioenvs
 .piolibdeps

README.md

@@ -1,6 +1,6 @@
-## unmaintained
+## updated: compile and works as of ESP32 1.0.6  tested on a Dev Module
+
 
-Sorry but I cannot take time to maintain the library now...
 
 ## web3-arduino
 

examples/Contract.sol

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-3.0
+pragma solidity >=0.5.0 ;
+contract RyanCoin {
+    mapping (address => uint) public balances;
+    uint constant public PRICE = 2000000000000000; // 2 mETH as PRICE
+
+    constructor() public {
+    }
+
+    function buyCoin() public payable{     // pay ETH to create coin
+        require(msg.value > 0);
+        balances[msg.sender] += (msg.value / PRICE);
+    }
+
+    function getBalance(
+    ) public view returns(uint){
+        return balances[msg.sender];
+    }
+}

examples/basic_eth/basic_eth.ino

@@ -1,17 +1,30 @@
+#include <Arduino.h>
 #include <WiFi.h>
 #include <Web3.h>
+#include <esp_system.h>
+#include <esp_log.h>
+
 
 #define USE_SERIAL Serial
 
+
 #define ENV_SSID     "<YOUR_SSID>"
 #define ENV_WIFI_KEY "<YOUR_PASSWORD>"
 #define INFURA_HOST "rinkeby.infura.io"
 #define INFURA_PATH "/<YOUR_INFURA_ID>"
-#define ADDRESS "0x<YOUR_ETH_ADDRESS>"
 
-Web3 web3(INFURA_HOST, INFURA_PATH);
+Web3 web3(new std::string(INFURA_HOST), new std::string( INFURA_PATH));
 
-void eth_example();
+void net_example();
+
+String getMacAddress() {
+  uint8_t baseMac[6];
+  // Get MAC address for WiFi station
+  esp_read_mac(baseMac, ESP_MAC_WIFI_STA);
+  char baseMacChr[18] = {0};
+  sprintf(baseMacChr, "%02X:%02X:%02X:%02X:%02X:%02X", baseMac[0], baseMac[1], baseMac[2], baseMac[3], baseMac[4], baseMac[5]);
+  return String(baseMacChr);
+}
 
 void setup() {
     USE_SERIAL.begin(115200);
@@ -24,6 +37,9 @@ void setup() {
 
     WiFi.begin(ENV_SSID, ENV_WIFI_KEY);
 
+    String mac = getMacAddress();
+    USE_SERIAL.println(mac);
+
     // attempt to connect to Wifi network:
     while (WiFi.status() != WL_CONNECTED) {
         Serial.print(".");
@@ -33,62 +49,27 @@ void setup() {
 
     USE_SERIAL.println("Connected");
 
-    eth_example();
+    net_example();
 }
 
 void loop() {
-    // put your main code here, to run repeatedly:
+  // put your main code here, to run repeatedly:
 }
 
-void eth_example() {
-    char tmp[32];
+void net_example() {
+    int version = web3.NetVersion();
+    USE_SERIAL.println("net_version");
+    USE_SERIAL.println(version); // this is 4
 
-    double version = web3.EthProtocolVersion();
-    USE_SERIAL.println("eth_protocolVersion");
-    USE_SERIAL.println(version);
-
-    bool listening = web3.EthSyncing();
-    USE_SERIAL.println("eth_syncing");
+    bool listening = web3.NetListening();
+    USE_SERIAL.println("net_listening");
     if (listening) {
-        USE_SERIAL.println("syncing");
-    } else{
-        USE_SERIAL.println("not syncing");
-    }
-
-    bool mining = web3.EthMining();
-    USE_SERIAL.println("eth_mining");
-    if (mining) {
-        USE_SERIAL.println("mining");
+        USE_SERIAL.println("listening");
     } else{
-        USE_SERIAL.println("not mining");
+        USE_SERIAL.println("not listening");
     }
 
-    double hashrate = web3.EthHashrate();
-    USE_SERIAL.println("eth_hashrate");
-    USE_SERIAL.println(hashrate);
-
-    long long int gasPrice = web3.EthGasPrice();
-    USE_SERIAL.println("eth_gasPrice");
-    memset(tmp, 0, 32);
-    sprintf(tmp, "%lld", gasPrice);
-    USE_SERIAL.println(tmp);
-
-    int blockNumber = web3.EthBlockNumber();
-    USE_SERIAL.println("eth_blockNumber");
-    memset(tmp, 0, 32);
-    sprintf(tmp, "%d", blockNumber);
-    USE_SERIAL.println(tmp);
-
-    string address = "0xd7049ea6f47ef848C0Ad570dbA618A9f6e4Eb25C";
-    long long int balance = web3.EthGetBalance(&address);
-    USE_SERIAL.println("eth_getBalance");
-    memset(tmp, 0, 32);
-    sprintf(tmp, "%lld", balance);
-    USE_SERIAL.println(tmp);
-
-    int txcount = web3.EthGetTransactionCount(&address);
-    USE_SERIAL.println("eth_getTransactionCount");
-    memset(tmp, 0, 32);
-    sprintf(tmp, "%d", txcount);
-    USE_SERIAL.println(tmp);
+    int peerCount = web3.NetPeerCount();
+    USE_SERIAL.println("net_peerCount");
+    USE_SERIAL.println(peerCount);
 }

examples/basic_net/basic_net.ino

@@ -1,5 +1,9 @@
+#include <Arduino.h>
 #include <WiFi.h>
 #include <Web3.h>
+#include <esp_system.h>
+#include <esp_log.h>
+
 
 #define USE_SERIAL Serial
 
@@ -8,10 +12,20 @@
 #define INFURA_HOST "rinkeby.infura.io"
 #define INFURA_PATH "/<YOUR_INFURA_ID>"
 
-Web3 web3(INFURA_HOST, INFURA_PATH);
+Web3 web3(new std::string(INFURA_HOST), new std::string( INFURA_PATH));
+
 
 void net_example();
 
+String getMacAddress() {
+  uint8_t baseMac[6];
+  // Get MAC address for WiFi station
+  esp_read_mac(baseMac, ESP_MAC_WIFI_STA);
+  char baseMacChr[18] = {0};
+  sprintf(baseMacChr, "%02X:%02X:%02X:%02X:%02X:%02X", baseMac[0], baseMac[1], baseMac[2], baseMac[3], baseMac[4], baseMac[5]);
+  return String(baseMacChr);
+}
+
 void setup() {
     USE_SERIAL.begin(115200);
 
@@ -23,6 +37,9 @@ void setup() {
 
     WiFi.begin(ENV_SSID, ENV_WIFI_KEY);
 
+    String mac = getMacAddress();
+    USE_SERIAL.println(mac);
+
     // attempt to connect to Wifi network:
     while (WiFi.status() != WL_CONNECTED) {
         Serial.print(".");
@@ -56,4 +73,3 @@ void net_example() {
     USE_SERIAL.println("net_peerCount");
     USE_SERIAL.println(peerCount);
 }
-

examples/basic_web3/basic_web3.ino

@@ -1,17 +1,31 @@
+#include <Arduino.h>
 #include <WiFi.h>
 #include <Web3.h>
+#include <esp_system.h>
+#include <esp_log.h>
+
 
 #define USE_SERIAL Serial
 
+
 #define ENV_SSID     "<YOUR_SSID>"
 #define ENV_WIFI_KEY "<YOUR_PASSWORD>"
 #define INFURA_HOST "rinkeby.infura.io"
 #define INFURA_PATH "/<YOUR_INFURA_ID>"
 
-Web3 web3(INFURA_HOST, INFURA_PATH);
+Web3 web3(new std::string(INFURA_HOST), new std::string( INFURA_PATH));
 
 void web3_example();
 
+String getMacAddress() {
+  uint8_t baseMac[6];
+  // Get MAC address for WiFi station
+  esp_read_mac(baseMac, ESP_MAC_WIFI_STA);
+  char baseMacChr[18] = {0};
+  sprintf(baseMacChr, "%02X:%02X:%02X:%02X:%02X:%02X", baseMac[0], baseMac[1], baseMac[2], baseMac[3], baseMac[4], baseMac[5]);
+  return String(baseMacChr);
+}
+
 void setup() {
     USE_SERIAL.begin(115200);
 
@@ -23,6 +37,9 @@ void setup() {
 
     WiFi.begin(ENV_SSID, ENV_WIFI_KEY);
 
+    String mac = getMacAddress();
+    USE_SERIAL.println(mac);
+
     // attempt to connect to Wifi network:
     while (WiFi.status() != WL_CONNECTED) {
         Serial.print(".");
@@ -41,11 +58,11 @@ void loop() {
 
 void web3_example() {
     string result = web3.Web3ClientVersion();
-    USE_SERIAL.println("web3_ClientVersion");
+    USE_SERIAL.println("web3_ClientVersion"); //returns current client version
     USE_SERIAL.println(result.c_str());
 
-    string src = "0x68656c6c6f20776f726c64";
+    string src = "0x68656c6c6f20776f726c64"; //data to hash
     result = web3.Web3Sha3(&src);
-    USE_SERIAL.println("web3_sha3");
+    USE_SERIAL.println("web3_sha3");  // this is the Keccak-256 hash ( not the NIST SHA3-256)
     USE_SERIAL.println(result.c_str()); // 0x47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad
 }