DeviceInfo i2cscanner

src/supla/network/html/i2cscanner.h

@@ -0,0 +1,57 @@
+/*
+   Copyright (C) malarz
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+   */
+
+#ifndef SRC_SUPLA_NETWORK_HTML_I2CSCANNER_H_
+#define SRC_SUPLA_NETWORK_HTML_I2CSCANNER_H_
+
+#include <Wire.h>
+
+namespace Supla {
+namespace Html {
+
+/**
+ * class displaying all detected in device I2C addresses
+ * on Webinterface in DeviceInfo
+ *
+ * shuld be used after Wire.begin(...) 
+ */
+class I2Cscanner : public Supla::HtmlElement {
+ public:
+  I2Cscanner() : HtmlElement(HTML_SECTION_DEVICE_INFO) {}
+
+  void send(Supla::WebSender* sender) {
+    sender->send("<span>");
+    sender->send("<br>I2C:");
+    for (uint8_t address = 1; address < 127; address++) {
+      Wire.beginTransmission(address);
+      byte error = Wire.endTransmission();
+      char buffer[2];
+      if (error == 0) {
+        sender->send(" 0x");
+        snprintf(buffer, sizeof(buffer), "%2x", address);
+        sender->send(buffer, 2);
+      }
+    }
+    sender->send("</span>");
+  }
+};  // I2Cscanner
+
+};  // namespace Html
+};  // namespace Supla
+
+#endif  // SRC_SUPLA_NETWORK_HTML_I2CSCANNER_H_