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6 RS485 模組及 MODBUS Library功能
// 利用UART 控制通訊接收、傳送
#include <SoftwareSerial.h>
// 定義半雙工送收控制接腳的PIN
#define RS485CtrlPin 7
// 定義 通訊延遲時間
#define TIME_REQUEST 7
unsigned long interframe_delay = 2; /* Modbus t3.5 = 2 ms */
// 宣告回傳值及buffer 、傳輸速度等變數
int retval;
int data[12];
int baud_rate = 9600;
// 宣告冷氣回傳暫存器變數
int v00,v03,v04,v20,v21,v22,v23,v24,v29,v2a,v2b;
// 讀取冷氣暫存器值
retval= read_holding_registers( AC_no,0,1,data,10);
v00= (unsigned int) (256 *( data[0]>>8) + (data[0] & 0x00ff) );
Modbus.ino](https://image.slidesharecdn.com/20170418-170422034220/85/20170415-_-51-320.jpg)
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20170415- 智慧空調通訊系統實務_柯大
本文件详细介绍了日立智慧型冷气的架构及其通过RS485和Modbus协议的工业控制功能，涉及如何利用PC设置并接收空调数据。此外，文档还探讨了Ameba Arduino开发环境的安装与功能，以及IoT平台的比较和MQTT协议的应用。最后提供了一些在线平台的注册信息和相关库的使用说明。
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20170415- 智慧空調通訊系統實務_柯大
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- 2. 1.日立智慧型冷氣架構說明 2.工業控制協定RS485 MODBUS功能說明 2 3.串接RS485連接日立冷氣 MODBUS 4.利用PC設定及接收智慧空調資料 5.Ameba Arduino 開發環境安裝及各項功能 7. IoT 平台介紹 各種IOT平台比較 MQTT 介紹 QNAP NAS 建立IoT私有平台雲 6 RS485 模組及 MODBUS Library功能
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- 32. 32 USB (COM) 轉RS485 模組 USB connect to PC A and B : the RS485 pair Connect to RS485 Device
- 33. 33 DI (data in)to pin 1 (D1) TX RO (receive out) to pin 0 (D0) RX DE (data enable) RE (receive enable) jumpered together and to DE pin 7 (D7) Vcc 5V and Gnd connected (5V Gnd) A and B : the RS485 pair RS485 轉UART (TTL (RX/TX) 模組
- 34. 34 4.利用PC設定及接收智慧空調資料 (1) 將USB (COM)轉 RS485 模組與PC USB 埠連接。 (2) 安裝 COM port驅動程式： 目錄： CH341_USB_DriverCH341SER 安裝程式：SETUP.EXE (4) 啟動PC modtool 讀取冷氣機暫存器值 目錄： RS485MODBUS-TOOL 執行程式： modtool.exe (3) 查看裝置管理員中USB是否有新增加的序列(COM)埠
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- 43. 43 Arduino UNO 與AMEBA RS485 模組 對接
- 44. 44 #include <SoftwareSerial.h> #define SSerialRX0 //Serial Receive pin #define SSerialTX 1 //Serial Transmit pin #define SSerialTxControl 3 //RS485 Direction control SoftwareSerial RS485Serial(SSerialRX, SSerialTX); // RX, TX int byteReceived; int byteSend; void setup() { // Start the built-in serial port, probably to Serial Monitor Serial.begin(38400); Serial.println("Use Serial Monitor, type in upper window, ENTER"); pinMode(SSerialTxControl, OUTPUT); digitalWrite(SSerialTxControl, LOW); // Init Transceiver // Start the software serial port, to another device RS485Serial.begin(4800); // set the data rate } void loop() { if (Serial.available()) { byteReceived = Serial.read(); digitalWrite(SSerialTxControl, HIGH); RS485Serial.write(byteReceived); delay(10); digitalWrite(SSerialTxControl, LOW); } if (RS485Serial.available()) { byteReceived = RS485Serial.read(); Serial.write(byteReceived); delay(10); } } AmebaMaster.ino
- 45. 45 ArduinoUNO Slave.ino #include <SoftwareSerial.h> #defineSSerialRX 10 //Serial Receive pin #define SSerialTX 11 //Serial Transmit pin #define SSerialTxControl 3 //RS485 Direction control SoftwareSerial RS485Serial(SSerialRX, SSerialTX); // RX, TX int byteReceived; int byteSend; void setup() { // Start the built-in serial port, probably to Serial Monitor Serial.begin(38400); Serial.println("SerialRemote"); // Can be ignored pinMode(SSerialTxControl, OUTPUT); digitalWrite(SSerialTxControl, LOW); // Init Transceiver // Start the software serial port, to another device RS485Serial.begin(4800); // set the data rate } void loop() { //Copy input data to output if (RS485Serial.available()) { byteSend = RS485Serial.read(); // Read the byte delay(50); //Serial.println(byteSend); digitalWrite(SSerialTxControl, HIGH); // Enable RS485 Transmit RS485Serial.write(byteSend); // Send the byte back delay(10); digitalWrite(SSerialTxControl, LOW); // Disable RS485 Transmit } }
- 46. 46 5. Ameba Arduino開發環境安裝及各項功能 Ameba module -RTL8195AM 本身規格 * 32-bit 166MHz ARM Cortex-M3 CPU * 內建 低功耗 802.11 b/g/n 2.4G 無線 Wi-Fi * 內建 NFC * 介面支援 : GPIO / PWM / SPI / I2C / ADC / DAC / UART * Crypto HW engine : 可做硬體加解密, 支援 MD5/ SHA-1 / SHA2-256 / DES / 3DES / AES * IC 本身有 512K RAM, 另外模組有包 2M SDRAM / 16M bit flash
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- 50. PinD13 Reset鍵Gnd 50 1. <檔案>-<範例>-<01-Basic>-<blink> 2. 上傳燒錄程式 3. 按Reset鍵啟動新上傳的程式 測試開發板功能運作是否正常
- 51. 51 6 RS485 模組及MODBUS Library功能 // 利用UART 控制通訊接收、傳送 #include <SoftwareSerial.h> // 定義半雙工送收控制接腳的PIN #define RS485CtrlPin 7 // 定義 通訊延遲時間 #define TIME_REQUEST 7 unsigned long interframe_delay = 2; /* Modbus t3.5 = 2 ms */ // 宣告回傳值及buffer 、傳輸速度等變數 int retval; int data[12]; int baud_rate = 9600; // 宣告冷氣回傳暫存器變數 int v00,v03,v04,v20,v21,v22,v23,v24,v29,v2a,v2b; // 讀取冷氣暫存器值 retval= read_holding_registers( AC_no,0,1,data,10); v00= (unsigned int) (256 *( data[0]>>8) + (data[0] & 0x00ff) ); Modbus.ino
- 52. 52 RT_HT_MODbus_Get12_20160827_V3.ino // RS485 MODBUS通訊副程式模組 HT_MODbus.ino //序列埠監控視窗顯示冷氣機資料副程式模組 displayDATA.ino //讀取冷氣機資料副程式模組 readAC.ino //主程式 Void Setup() { … } Void Loop() { … } 7. 實作練習
- 53. 53 申請Temboo帳號 https://www.temboo.com/ 申請Xively帳號 https://personal.xively.com/signup/ 申請ThingSpeak帳號 https://thingspeak.com/users/sign_up 申請Thethings.io帳號 https://panel.thethings.io/#/login 申請Yeelink.net帳號 http://www.yeelink.net/register 申請lewei樂為聯網 帳號 http://www.lewei50.com/home/register 申請pieceduino Cloud帳號 http://www.pieceduino.com/pieceduino-web-panel/ IoT雲端平台參考網站 申請MediaTekCloud Sandbox 帳號 https://mcs.mediatek.com/oauth/en/login 申請Thethingsnetwork 帳號 https://account.thethingsnetwork.org/register
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- 78. 78 MQTT (Message QueuingTelemetry Transport)，它是為IBM和Eurotech共同 製定出來的protocol，在MQTT的官網可以看到它對MQTT的介紹： MQTT is a machine-to-machine (M2M)/”Internet of Things” connectivity protocol. It was designed as an extremely lightweight publish/subscribe messaging transport. 所以它是為了IOT而設計的protocol，它是基於TCP/IP的協定，並且透過 publish/subscribe的方式做資料傳送與接收。 它的架構如下圖: MQTT簡介
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- 80. 80 MQTT特性： 1. Publish/Subscribe的訊息傳送模式，來提供一對多的訊息分配。 2. 使用TCP/IP來提供基本的網路連結。 3.三種訊息傳送服務的qualities： (QoS) 4. 由於他的header固定長度為2byte，因此可以減少封包傳送 時的額外負載，並減少所需的網路頻寬。 5. 當異常斷線發生時，會使用最後遺囑(Last Will and Testament)的機制，通知各個感興趣的client。 0: "At most once"，最多一次，訊息遺失或是重複發送的狀況可能會發生； 這種quality適合應用在環境感測，不在意資料是否會遺失，因為下一 次的資料取樣很快就會被published出來。 1: "At least once"，至少一次，這種quality保證訊息會送達，只是可能會 發生重複發送訊息的狀況。 2:"Exactly once"，確定一次，確認訊息只會送到一次。這種quality適合用 在計費系統，系統只要有重複收到資料、或是資料遺失狀況發生，就 會造成系統錯誤。
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- 86. 86 自建MQTT Server(Broker)介紹 QNAP NAS讓您快速建立自己的 MQTT Server https://www.qnap.com/zh-tw/
- 87. 87 Docker 架構的 NAS，Container Station 可自建更多 IoT Service
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- 91. 91 Container 列表 Blockly Blocklyis a library for building visual programming editors. Dashing Dashing is a Sinatra-based framework that lets you build beautiful dashboards. Freeboard A Open Source Dashboard. Intel Edison Intel® Edison technology is a hardware and software platform that, when combined with sensors and your imagination, empowers you to invent new Internet- enabled products and solutions. Kafka Apache Kafka is a publish-subscribe messaging rethought as a distributed commit log. MariaDB MariaDB is a community-developed fork of the MySQL relational database management system intended to remain free under the GNU GPL. MongoDB MongoDB (from humongous) is a cross-platform document-oriented database. Node-RED Node-RED is a tool for wiring together hardware devices, APIs and online services in new and interesting ways. Ponte Ponte allows you to publish and receive data using any protocol: HTTP, MQTT and CoAP. RabbitMQ Robust messaging for applications. Redis Redis is a data structure server. It is open-source, networked, in-memory, and stores keys with optional durability. RPI The Raspberry Pi is a series of credit-card-sized, single-board computers developed in the United Kingdom by the Raspberry Pi Foundation with the intent to promote the teaching of basic computer science in schools and developing countries.
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- 98. 98 利用QNAP NAS Server提供的Node-RED container 來接收以儀表板顯示數值及曲數
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