feat(openthread): New Scan Example

Author: SuGlider

libraries/OpenThread/examples/ThreadScan/ThreadScan.ino

@@ -0,0 +1,68 @@
+/*
+   OpenThread.begin(true) will automatically start a node in a Thread Network
+   Full scanning requires the thread node to be at least in Child state.
+
+   This will scan the IEEE 802.14.5 devices in the local area using CLI "scan" command
+   As soon as this device turns into a Child, Router or Leader, it will be able to
+   scan for Local Thread Networks as well.
+
+*/
+
+#include "OThreadCLI.h"
+#include "OThreadCLI_Util.h"
+
+bool otPrintRespCLI(const char *cmd, Stream &output) {
+  char cliResp[256];
+  if (cmd == NULL) {
+    return true;
+  }
+  OThreadCLI.println(cmd);
+  while (1) {
+    size_t len = OThreadCLI.readBytesUntil('\n', cliResp, sizeof(cliResp));
+    if (len == 0) {
+      return false; // timeout for reading a response from CLI
+    }
+    // clip it on EOL
+    for (int i = 0; i < len; i++) {
+      if (cliResp[i] == '\r' || cliResp[i] == '\n') {
+        cliResp[i] = '\0';
+      }
+    }
+    if (!strncmp(cliResp, "Done", 4)) {
+      return true; // finished with success
+    }
+    if (!strncmp(cliResp, "Error", 4)) {
+      return false; // the CLI command or its arguments are not valid
+    }
+    output.println(cliResp); 
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+  OThreadCLI.begin(true); // For scanning, AutoStart must be active, any setup
+  OThreadCLI.setTimeout(10000); // 10 seconds for reading a line from CLI - scanning takes time
+  Serial.println();
+  Serial.println("This sketch will continuosly scan the Thread Local Network and all devices IEEE 802.15.4 compatible");
+}
+
+void loop() {
+  Serial.println();
+  Serial.println("Scanning for near by IEEE 802.15.4 devices:");
+  // 802.15.4 Scan just need a previous OThreadCLI.begin() to tun on the 802.15.4 stack
+  if (!otPrintRespCLI("scan", Serial)) {
+    Serial.println("802.15.4 Scan Failed...");
+  }
+  delay(5000);
+  if (otGetDeviceRole() < OT_ROLE_CHILD) {
+    Serial.println();
+    Serial.println("This device has not started Thread yet, bypassing Discovery Scan");
+    return;
+  }
+  Serial.println();
+  Serial.println("Scanning - MLE Discover:");
+  if (!otPrintRespCLI("discover", Serial)) {
+    Serial.println("MLE Discover Failed...");
+  }
+  delay(5000);
+}

libraries/OpenThread/examples/ThreadScan/ci.json

@@ -0,0 +1,9 @@
+{
+    "targets": {
+      "esp32": false,
+      "esp32c2": false,
+      "esp32c3": false,
+      "esp32s2": false,
+      "esp32s3": false
+    }
+  }