This is a mbed Client sample where ZXing is incorporated, and works on GR-PEACH and GR-LYCHEE.

Dependencies:   DisplayApp AsciiFont

Overview

This sample program shows how to use mbed Client together with ZXing which is an open-source, multi-format 1D/2D barcode image processing library. For more info on ZXing, please refer to https://github.com/zxing/zxing.

Required hardware

Application setup

  1. Select the connection type. For details, please refer to the following wiki:
    https://os.mbed.com/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Connection-type.
  2. Set the client credentials. For details, please refer to the following wiki:
    https://os.mbed.com/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Client-credentials.
  3. Change Ethernet settings. For details, please refer to the following wiki:
    https://developer.mbed.org/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Ethernet-settings.
  4. Change Wifi settings. For details, please refer to the following wiki:
    https://os.mbed.com/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Wifi-settings.
  5. Set up an IP address. (This step is optional.) For details, please refer to the following wiki:
    https://os.mbed.com/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/IP-address-setup.

Building the example

To build this example:

  1. Import this example onto mbed Compiler.
  2. Configure the example in accordance with Application setup.
  3. Compile the example on mbed Compiler and download the resultant binary file.
  4. Plug the Ethernet cable into GR-PEACH or GR-LYCHEE if you are using Ethernet mode.
  5. Plug the micro-USB cable into the OpenSDA port which lies on the next to the RESET button.
  6. Copy the binary previously downloaded to your PC to GR-PEACH or GR-LYCHEE to flash this example. When the copy is successfully completed, the board is ready to work.
  7. Press the RESET button on the board to run the example.
  8. For verification, please refer to the following wiki:
    https://developer.mbed.org/teams/Renesas/code/GR-PEACH_mbed-os-client-ZXingSample/wiki/Monitoring-the-application.

Application resources

This example exposes four resources listed below:

  1. 3202/0/5700. Decode result of barcode data input from camera (GET).
  2. 3201/0/5850. Blink function, blinks LED when executed (POST).
  3. 3201/0/5853. Blink pattern, used by the blink function to determine how to blink. In the format of 1000:500:1000:500:1000:500 (PUT).
  4. 3201/0/5855. Blink color, used by the blink function. Any of red, green, blue, cyan, yellow and magenta is acceptable if you are using GR-PEACH board (PUT).
  5. 3201/0/5855. Blink color, used by the blink function. Any of green, yellow, orange and red is acceptable if you are using GR-LYCHEE board (PUT).

For more info on how to get notifications when resource 1 changes, or how to use resource 2, 3 and 4, please look at

Import programGR-PEACH_mbed-connector-ZXingSample-node

Node.js based Web Application for mbed Device Connector specific to GR-PEACH_mbed-os-client-ZXingSample

Revision:
0:eb73febb2bba
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/zxing_lib/zxing/ZXing.h	Thu Oct 06 18:00:30 2016 +0900
@@ -0,0 +1,135 @@
+// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
+/*
+ *  Copyright 2013 ZXing authors All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __ZXING_H_
+#define __ZXING_H_
+
+#define ZXING_ARRAY_LEN(v) ((int)(sizeof(v)/sizeof(v[0])))
+#define ZX_LOG_DIGITS(digits) \
+    ((digits == 8) ? 3 : \
+     ((digits == 16) ? 4 : \
+      ((digits == 32) ? 5 : \
+       ((digits == 64) ? 6 : \
+        ((digits == 128) ? 7 : \
+         (-1))))))
+
+#ifndef ZXING_DEBUG
+#define ZXING_DEBUG 0
+#endif
+
+namespace zxing {
+typedef char byte;
+typedef bool boolean;
+}
+
+#include <limits>
+
+#if defined(_WIN32) || defined(_WIN64)
+
+#include <float.h>
+
+namespace zxing {
+inline bool isnan(float v) {return _isnan(v) != 0;}
+inline bool isnan(double v) {return _isnan(v) != 0;}
+inline float nan() {return std::numeric_limits<float>::quiet_NaN();}
+}
+
+#else
+
+#include <cmath>
+
+namespace zxing {
+#if defined(__ICCARM__) || defined( __CC_ARM )  //
+#else                                           //
+inline bool isnan(float v) {return std::isnan(v);}
+inline bool isnan(double v) {return std::isnan(v);}
+#endif                                          //
+inline float nan() {return std::numeric_limits<float>::quiet_NaN();}
+}
+#endif
+
+#if ZXING_DEBUG
+
+#include <iostream>
+#include <string>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::flush;
+using std::string;
+using std::ostream;
+
+#if ZXING_DEBUG_TIMER
+
+#include <sys/time.h>
+
+namespace zxing {
+
+class DebugTimer {
+public:
+  DebugTimer(char const* string_) : chars(string_) {
+    gettimeofday(&start, 0);
+  }
+
+  DebugTimer(std::string const& string_) : chars(0), string(string_) {
+    gettimeofday(&start, 0);
+  }
+
+  void mark(char const* string) {
+    struct timeval end;
+    gettimeofday(&end, 0);
+    int diff =
+      (end.tv_sec - start.tv_sec)*1000*1000+(end.tv_usec - start.tv_usec);
+    
+    cerr << diff << " " << string << '\n';
+  }
+
+  void mark(std::string string) {
+    mark(string.c_str());
+  }
+
+  ~DebugTimer() {
+    if (chars) {
+      mark(chars);
+    } else {
+      mark(string.c_str());
+    }
+  }
+
+private:
+  char const* const chars;
+  std::string string;
+  struct timeval start;
+};
+
+}
+
+#define ZXING_TIME(string) DebugTimer __timer__ (string)
+#define ZXING_TIME_MARK(string) __timer__.mark(string)
+
+#endif
+
+#endif // ZXING_DEBUG
+
+#ifndef ZXING_TIME
+#define ZXING_TIME(string) (void)0
+#endif
+#ifndef ZXING_TIME_MARK
+#define ZXING_TIME_MARK(string) (void)0
+#endif
+
+#endif