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
- GR-PEACH ( https://developer.mbed.org/platforms/Renesas-GR-PEACH/ )
- Audio Camera Shield ( https://developer.mbed.org/teams/Renesas/wiki/Audio_Camera-shield )
- LCD Shield ( https://developer.mbed.org/teams/Renesas/wiki/LCD-shield )
- Ethernet cable and connection to the internet
- Wireless Camera shieled (This is GR-PEACH' Wifi(ESP32) optional.)
- GR-LYCHEE ( https://developer.mbed.org/platforms/Renesas-GR-LYCHEE/ )
Application setup
- 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. - 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. - 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. - 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. - 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:
- Import this example onto mbed Compiler.
- Configure the example in accordance with Application setup.
- Compile the example on mbed Compiler and download the resultant binary file.
- Plug the Ethernet cable into GR-PEACH or GR-LYCHEE if you are using Ethernet mode.
- Plug the micro-USB cable into the OpenSDA port which lies on the next to the RESET button.
- 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.
- Press the RESET button on the board to run the example.
- 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:
- 3202/0/5700. Decode result of barcode data input from camera (GET).
- 3201/0/5850. Blink function, blinks LED when executed (POST).
- 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).
- 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).
- 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
main.cpp
- Committer:
- 1050186
- Date:
- 2018-12-13
- Revision:
- 10:f7e8d2b608c3
- Parent:
- 6:ea24d9271ff1
File content as of revision 10:f7e8d2b608c3:
/* * Copyright (c) 2015, 2016 ARM Limited. All rights reserved. * SPDX-License-Identifier: Apache-2.0 * 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. */ #include "mbed-trace/mbed_trace.h" #include "mbed.h" #include "zxing_main.h" // Network interaction must be performed outside of interrupt context osThreadId mainThread; #define NO_CONNECT (-1) #if MBED_CONF_APP_NETWORK_INTERFACE == NO_CONNECT static void callback_zxing(char * addr, int size) { printf("%s\r\n", addr); } // Entry point to the program int main() { // Keep track of the main thread mainThread = osThreadGetId(); printf("no connect\n"); mbed_trace_init(); zxing_init(&callback_zxing); while (1) { zxing_loop(); Thread::wait(5); } } #else // MBED_CONF_APP_NETWORK_INTERFACE != NO_CONNECT #define __STDC_FORMAT_MACROS #include <inttypes.h> #include <string> #include <sstream> #include <vector> #include "mbed-trace/mbed_trace.h" #include "mbedtls/entropy_poll.h" #include "security.h" #include "mbed.h" // easy-connect compliancy, it has 2 sets of wifi pins we have only one #define MBED_CONF_APP_ESP8266_TX MBED_CONF_APP_WIFI_TX #define MBED_CONF_APP_ESP8266_RX MBED_CONF_APP_WIFI_RX #include "easy-connect/easy-connect.h" // Should be defined after easy-connect.h #include "simpleclient.h" #ifdef TARGET_STM #define RED_LED (LED3) #define GREEN_LED (LED1) #define BLUE_LED (LED2) #define LED_ON (1) #elif TARGET_RZ_A1H #define RED_LED (LED1) #define GREEN_LED (LED2) #define BLUE_LED (LED3) #define USER_LED (LED4) #define LED_ON (1) #elif TARGET_GR_LYCHEE #define GREEN_LED (LED1) #define YELLOW_LED (LED2) #define ORANGE_LED (LED3) #define RED_LED (LED4) #define LED_ON (1) #else #define RED_LED (LED1) #define GREEN_LED (LED2) #define BLUE_LED (LED3) #define LED_ON (0) #endif #define LED_OFF (!LED_ON) #define BLINK_SIGNAL 0x1 // Status indication DigitalOut red_led(RED_LED); DigitalOut green_led(GREEN_LED); #ifdef TARGET_RZ_A1H DigitalOut blue_led(BLUE_LED); DigitalOut user_led(USER_LED); #elif TARGET_GR_LYCHEE DigitalOut yellow_led(YELLOW_LED); DigitalOut orange_led(ORANGE_LED); #else DigitalOut blue_led(BLUE_LED); #endif Ticker status_ticker; void blinky() { #ifdef TARGET_RZ_A1H user_led = !user_led; #else green_led = !green_led; #endif } // These are example resource values for the Device Object struct MbedClientDevice device = { "Manufacturer_String", // Manufacturer "Type_String", // Type "ModelNumber_String", // ModelNumber "SerialNumber_String" // SerialNumber }; // Instantiate the class which implements LWM2M Client API (from simpleclient.h) MbedClient mbed_client(device); // Set up a button interrupt for user interaction #ifdef MBED_CONF_APP_BUTTON1 InterruptIn counter_btn(MBED_CONF_APP_BUTTON1); #endif /** * User interaction handler / simulator. Sets up physical button handler and a ticker * for regular updates for the resources. * * MBED_CONF_APP_BUTTON1 is mapped to actual button pin the mbed_app.json file, where you need to * specify board-specific value or leave it undefined if the board does not have buttons. */ class InteractionProvider { public: InteractionProvider(Semaphore& updates_sem) : updates(updates_sem) { timer_ticked = false; clicked = false; // Set up handler function for the interaction button, if available #ifdef MBED_CONF_APP_BUTTON1 counter_btn.fall(this, &InteractionProvider::counter_button_handler); #endif // Use the counter button handler to send an update of endpoint resource values // to connector every 15 seconds periodically. timer.attach(this, &InteractionProvider::timer_handler, 15.0); } // flags for interaction, these are read from outside interrupt context volatile bool timer_ticked; volatile bool clicked; private: void timer_handler() { timer_ticked = true; updates.release(); } void counter_button_handler() { clicked = true; updates.release(); } // time-based event source for regular resource updates Ticker timer; // Network interaction must be performed outside of interrupt context Semaphore& updates; }; /* * Arguments for running "blink" in it's own thread. */ class BlinkArgs { public: BlinkArgs() { clear(); } void clear() { position = 0; blink_pattern.clear(); } uint16_t position; std::vector<uint32_t> blink_pattern; }; /* * The Led contains one property (pattern) and a function (blink). * When the function blink is executed, the pattern is read, and the LED * will blink based on the pattern. */ class LedResource { public: LedResource() { // create ObjectID with metadata tag of '3201', which is 'digital output' // blinky_thread.start(callback(this, &LedResource::do_blink)); led_object = M2MInterfaceFactory::create_object("3201"); M2MObjectInstance* led_inst = led_object->create_object_instance(); // 5855 = Multi-state output M2MResource* color_res = led_inst->create_dynamic_resource("5855", "Color", M2MResourceInstance::STRING, false); // read and write color_res->set_operation(M2MBase::GET_PUT_ALLOWED); // set red as initial color color_res->set_value((const uint8_t*)"red", 3); // 5853 = Multi-state output M2MResource* pattern_res = led_inst->create_dynamic_resource("5853", "Pattern", M2MResourceInstance::STRING, false); // read and write pattern_res->set_operation(M2MBase::GET_PUT_ALLOWED); // set initial pattern (toggle every 200ms. 7 toggles in total) pattern_res->set_value((const uint8_t*)"500:500:500:500:500:500:500", 27); // there's not really an execute LWM2M ID that matches... hmm... M2MResource* led_res = led_inst->create_dynamic_resource("5850", "Blink", M2MResourceInstance::OPAQUE, false); // we allow executing a function here... led_res->set_operation(M2MBase::POST_ALLOWED); // when a POST comes in, we want to execute the led_execute_callback led_res->set_execute_function(execute_callback(this, &LedResource::blink)); } M2MObject* get_object() { return led_object; } void blink(void *argument) { // read the value of 'Pattern' M2MObjectInstance* inst = led_object->object_instance(); M2MResource* res = inst->resource("5853"); // read the value of 'Color' M2MObjectInstance* instC = led_object->object_instance(); M2MResource* resC = instC->resource("5855"); // values in mbed Client are all buffers, and we need a vector of int's uint8_t* buffIn = NULL; uint32_t sizeIn; res->get_value(buffIn, sizeIn); uint8_t* cbuffIn = NULL; uint32_t csizeIn; resC->get_value(cbuffIn, csizeIn); // turn the buffer into a string, and initialize a vector<int> on the heap std::string s((char*)buffIn, sizeIn); std::vector<uint32_t>* v = new std::vector<uint32_t>; printf("led_execute_callback pattern=%s\n", s.c_str()); // our pattern is something like 500:200:500, so parse that std::size_t found = s.find_first_of(":"); while (found!=std::string::npos) { v->push_back(atoi((const char*)s.substr(0,found).c_str())); s = s.substr(found+1); found=s.find_first_of(":"); if(found == std::string::npos) { v->push_back(atoi((const char*)s.c_str())); } } int position = 0; while (1) { do_blink(cbuffIn); if (position >= v->size()) { break; } // how long do we need to wait before the next blink? Thread::wait(v->at(position)); position++; } free(buffIn); free(cbuffIn); delete v; } private: M2MObject* led_object; void do_blink(uint8_t* color) { #if defined(TARGET_RZ_A1H) if (!strcmp((char *)color, "red")) { // blink the LED in red color red_led = !red_led; } else if (!strcmp((char *)color, "green")) { // blink in green color green_led = !green_led; } else if (!strcmp((char *)color, "blue")) { // blink in blue color blue_led = !blue_led; } else if (!strcmp((char *)color, "cyan")) { // blink in cyan color green_led = !green_led; blue_led = !blue_led; } else if (!strcmp((char *)color, "yellow")) { // blink in yellow color red_led = !red_led; green_led = !green_led; } else if (!strcmp((char *)color, "magenta")) { // blink in magenta color red_led = !red_led; blue_led = !blue_led; } else if (!strcmp((char *)color, "white")) { // blink in white color red_led = !red_led; green_led = !green_led; blue_led = !blue_led; } else { // no operation } #elif defined(TARGET_GR_LYCHEE) if (!strcmp((char *)color, "green")) { // blink the LED1(green color) green_led = !green_led; } else if (!strcmp((char *)color, "yellow")) { // blink the LED2(yellow color) yellow_led = !yellow_led; } else if (!strcmp((char *)color, "orange")) { // blink the LED3(orange color) orange_led = !orange_led; } else if (!strcmp((char *)color, "red")) { // blink the LED4(red color) red_led = !red_led; } else { // no operation } #endif } }; /* * The button contains one property (click count). * When `handle_button_click` is executed, the counter updates. */ class ButtonResource { public: ButtonResource(): counter(0) { // create ObjectID with metadata tag of '3200', which is 'digital input' btn_object = M2MInterfaceFactory::create_object("3200"); M2MObjectInstance* btn_inst = btn_object->create_object_instance(); // create resource with ID '5501', which is digital input counter M2MResource* btn_res = btn_inst->create_dynamic_resource("5501", "Button", M2MResourceInstance::INTEGER, true /* observable */); // we can read this value btn_res->set_operation(M2MBase::GET_ALLOWED); // set initial value (all values in mbed Client are buffers) // to be able to read this data easily in the Connector console, we'll use a string btn_res->set_value((uint8_t*)"0", 1); } ~ButtonResource() { } M2MObject* get_object() { return btn_object; } /* * When you press the button, we read the current value of the click counter * from mbed Device Connector, then up the value with one. */ void handle_button_click() { if (mbed_client.register_successful()) { M2MObjectInstance* inst = btn_object->object_instance(); M2MResource* res = inst->resource("5501"); // up counter counter++; printf("handle_button_click, new value of counter is %d\n", counter); // serialize the value of counter as a string, and tell connector char buffer[20]; int size = sprintf(buffer,"%d",counter); res->set_value((uint8_t*)buffer, size); } else { printf("simulate button_click, device not registered\n"); } } private: M2MObject* btn_object; uint16_t counter; }; /* * The timer contains one property: counter. * When `handle_timer_tick` is executed, the counter updates. */ class TimerResource { public: TimerResource(): counter(0) { // create ObjectID with metadata tag of '3200', which is 'digital input' btn_object = M2MInterfaceFactory::create_object("3200"); M2MObjectInstance* btn_inst = btn_object->create_object_instance(); // create resource with ID '5502', which is digital input counter M2MResource* btn_res = btn_inst->create_dynamic_resource("5502", "Timer", M2MResourceInstance::INTEGER, true /* observable */); // we can read this value btn_res->set_operation(M2MBase::GET_ALLOWED); // set initial value (all values in mbed Client are buffers) // to be able to read this data easily in the Connector console, we'll use a string btn_res->set_value((uint8_t*)"0", 1); } ~TimerResource() { } M2MObject* get_object() { return btn_object; } /* * When the timer ticks, we read the current value of the click counter * from mbed Device Connector, then up the value with one.l */ void handle_timer_tick() { if (mbed_client.register_successful()) { M2MObjectInstance* inst = btn_object->object_instance(); M2MResource* res = inst->resource("5502"); // up counter counter++; printf("handle_timer_click, new value of counter is %d\n", counter); // serialize the value of counter as a string, and tell connector char buffer[20]; int size = sprintf(buffer,"%d",counter); res->set_value((uint8_t*)buffer, size); } else { printf("handle_timer_tick, device not registered\n"); } } private: M2MObject* btn_object; uint16_t counter; }; class BigPayloadResource { public: BigPayloadResource() { big_payload = M2MInterfaceFactory::create_object("1000"); M2MObjectInstance* payload_inst = big_payload->create_object_instance(); M2MResource* payload_res = payload_inst->create_dynamic_resource("1", "BigData", M2MResourceInstance::STRING, true /* observable */); payload_res->set_operation(M2MBase::GET_PUT_ALLOWED); payload_res->set_value((uint8_t*)"0", 1); payload_res->set_incoming_block_message_callback( incoming_block_message_callback(this, &BigPayloadResource::block_message_received)); payload_res->set_outgoing_block_message_callback( outgoing_block_message_callback(this, &BigPayloadResource::block_message_requested)); } M2MObject* get_object() { return big_payload; } void block_message_received(M2MBlockMessage *argument) { if (argument) { if (M2MBlockMessage::ErrorNone == argument->error_code()) { if (argument->is_last_block()) { printf("Last block received\n"); } printf("Block number: %d\n", argument->block_number()); // First block received if (argument->block_number() == 0) { // Store block // More blocks coming } else { // Store blocks } } else { printf("Error when receiving block message! - EntityTooLarge\n"); } // printf("Total message size: %" PRIu32 "\n", argument->total_message_size()); printf("Total message size: %PRIu32\n", argument->total_message_size()); } } void block_message_requested(const String& resource, uint8_t *&/*data*/, uint32_t &/*len*/) { printf("GET request received for resource: %s\n", resource.c_str()); // Copy data and length to coap response } private: M2MObject* big_payload; }; /* * The Zxing contains a function (send string). * When `handle_string_send` is executed, the string after decoding is sent. */ class ZxingResource { public: ZxingResource() { // create ObjectID with metadata tag of '3202', which is 'send string' zxing_object = M2MInterfaceFactory::create_object("3202"); M2MObjectInstance* zxing_inst = zxing_object->create_object_instance(); // create resource with ID '5700', which is 'send string' M2MResource* zxing_res = zxing_inst->create_dynamic_resource("5700", "zxing", M2MResourceInstance::STRING, true); // we can read this value zxing_res->set_operation(M2MBase::GET_ALLOWED); // set initial value (all values in mbed Client are buffers) // to be able to read this data easily in the Connector console, we'll use a string zxing_res->set_value((uint8_t*)"0", 1); } ~ZxingResource() { } M2MObject* get_object() { return zxing_object; } /* * When you success the decode process of barcode, we send the string after decoding to mbed Device Connector. */ void handle_string_send(char * addr, int size) { if (mbed_client.register_successful()) { M2MObjectInstance* inst = zxing_object->object_instance(); M2MResource* res = inst->resource("5700"); printf("%s\r\n", addr); // tell the string to connector res->set_value((uint8_t *)addr, size); } else { printf("handle_string_send, device not registered\n"); } } private: M2MObject* zxing_object; }; ZxingResource zxing_resource; static void callback_zxing(char * addr, int size) { zxing_resource.handle_string_send(addr, size); } // debug printf function void trace_printer(const char* str) { printf("%s\r\n", str); } // Entry point to the program int main() { unsigned int seed; size_t len; #ifdef MBEDTLS_ENTROPY_HARDWARE_ALT // Used to randomize source port mbedtls_hardware_poll(NULL, (unsigned char *) &seed, sizeof seed, &len); #elif defined MBEDTLS_TEST_NULL_ENTROPY #warning "mbedTLS security feature is disabled. Connection will not be secure !! Implement proper hardware entropy for your selected hardware." // Used to randomize source port mbedtls_null_entropy_poll( NULL,(unsigned char *) &seed, sizeof seed, &len); #else #error "This hardware does not have entropy, endpoint will not register to Connector.\ You need to enable NULL ENTROPY for your application, but if this configuration change is made then no security is offered by mbed TLS.\ Add MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES and MBEDTLS_TEST_NULL_ENTROPY in mbed_app.json macros to register your endpoint." #endif srand(seed); red_led = LED_OFF; #ifdef TARGET_GR_LYCHEE orange_led = LED_OFF; #else blue_led = LED_OFF; #endif status_ticker.attach_us(blinky, 250000); // Keep track of the main thread osThreadId mainThread = osThreadGetId(); printf("\nStarting mbed Client example\n"); mbed_trace_init(); mbed_trace_print_function_set(trace_printer); mbed_trace_config_set(TRACE_MODE_COLOR | TRACE_ACTIVE_LEVEL_INFO | TRACE_CARRIAGE_RETURN); #if defined(TARGET_RZ_A1H) && (MBED_CONF_APP_NETWORK_INTERFACE == WIFI_BP3595) DigitalOut usb1en(P3_8); usb1en = 1; Thread::wait(5); usb1en = 0; Thread::wait(5); #endif NetworkInterface* network = easy_connect(true); if(network == NULL) { printf("\nConnection to Network Failed - exiting application...\n"); return -1; } // we create our button, timer and LED resources ButtonResource button_resource; LedResource led_resource; BigPayloadResource big_payload_resource; TimerResource timer_resource; // Network interaction must be performed outside of interrupt context Semaphore updates(0); InteractionProvider interaction_provider(updates); // Create endpoint interface to manage register and unregister mbed_client.create_interface(MBED_SERVER_ADDRESS, network); // Create Objects of varying types, see simpleclient.h for more details on implementation. M2MSecurity* register_object = mbed_client.create_register_object(); // server object specifying connector info M2MDevice* device_object = mbed_client.create_device_object(); // device resources object // Create list of Objects to register M2MObjectList object_list; // Add objects to list object_list.push_back(device_object); object_list.push_back(button_resource.get_object()); object_list.push_back(led_resource.get_object()); object_list.push_back(big_payload_resource.get_object()); object_list.push_back(timer_resource.get_object()); object_list.push_back(zxing_resource.get_object()); // Set endpoint registration object mbed_client.set_register_object(register_object); // Register with mbed Device Connector mbed_client.test_register(register_object, object_list); volatile bool registered = true; #if defined(TARGET_RZ_A1H) || defined(TARGET_GR_LYCHEE) zxing_init(&callback_zxing); Timer update_timer; update_timer.reset(); update_timer.start(); while (true) { if (zxing_loop() == 0) { update_timer.reset(); } else if (update_timer.read() >= 25) { mbed_client.test_update_register(); update_timer.reset(); } else { // do nothing } Thread::wait(5); } #else while (true) { updates.wait(25000); if(registered) { if(!interaction_provider.clicked) { mbed_client.test_update_register(); } }else { break; } if(interaction_provider.clicked) { interaction_provider.clicked = false; button_resource.handle_button_click(); } if(interaction_provider.timer_ticked) { interaction_provider.timer_ticked = false; timer_resource.handle_timer_tick(); } } #endif mbed_client.test_unregister(); status_ticker.detach(); } #endif // MBED_CONF_APP_NETWORK_INTERFACE != NO_CONNECT