第十五次 Raspberry Pi 社群聚會會後資料，希望能透過社群活動的分享和交流，找到更多 Raspberry Pi 的可能。本次主題是「 Raspberry Pi 物聯網(IoT, Internet of Things)無線傳輸技術」。
感謝大家的共筆，將分享的重點紀錄起來。我們會持續辦各種活動，連結更多有興趣的朋友們，找到更多 Raspberry Pi 的可能。
分享者1：Robert Wang
題目：樹莓派長距離 LoRa 物聯網
大綱：使用 Raspberry Pi + LoRa Module 的應用情境。
附註：Robert Wang 為立亞特科技副總，這次的分享是物聯網(IoT, Internet of Things)常用模組 LoRa 產品應用的實際經驗
FREC (frequency and channel): CH_X_Y where X is the channel and Y the frequency band. Bands allowed are 900 and 868 (MHz). Channels allowed are 10 to 17 for 868 MHz band and 00 to 12 for 900 MHz band.
ADDR (address): Number between 1 and 255.
BW (Bandwidth): BW_X where X can be 125, 250 or 500 KHz
CR (coding rate): CR_X where X is a number between 5 and 8.
/*
* LoRa 868 / 915MHz SX1272 Module
*
* Copyright (C) Libelium Comunicaciones Distribuidas S.L.
* http://www.libelium.com
*
* 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 3 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, see http://www.gnu.org/licenses/.
*
* Version: 1.0
* Design: David Gascón
* Implementation: Victor Boria & Luis Miguel Marti
*/
// Include the SX1272 and SPI library:
#include
#include "arduPiLoRa.h"
int e;
char message1 [60];
int ldr;
void setup()
{
// Print a start message
printf("SX1272 module and Arduino: receive packets without ACK\n");
// Power ON the module
sx1272.ON();
printf("Setting power ON: state ");
printf("%d\n",e);
// Set transmission mode and print the result
e = sx1272.setMode(4);
printf("Setting Mode: state ");
printf("%d\n",e);
// Select frequency channel
e = sx1272.setChannel(CH_12_868);
printf("Setting Channel: state ");
printf("%d\n",e);
// Select output power (Max, High or Low)
e = sx1272.setPower('H');
printf("Setting Power: state ");
printf("%d\n",e);
// Set the node address and print the result
e = sx1272.setNodeAddress(2);
printf("Setting node address: state ");
printf("%d\n",e);
// Print a success message
printf("SX1272 successfully configured\n");
}
void loop(void)
{
ldr = analogRead(1);
sprintf(message1, "ldr value: %i \r\n", ldr);
e = sx1272.sendPacketTimeout(3, message1);
printf(message1, "ldr value: %i \r\n", ldr);
printf("Packet sent, state ");
printf("%d\n",e);
delay(5000);
}
int main (){
setup();
while(1){
loop();
}
return (0);
}
此一程式可以用 cooking/examples/LoRa/cook.sh 進行編譯後執行。
$ cd /home/pi/cooking/examples/LoRa
$ ./cook.sh get_light_sensor.cpp
$ sudo ./get_light_sensor.cpp_exe
微軟除了贊助與活動外，也有更實際的作為。EricSK 介紹了 Visual Studio 出的 GDB Extension，可以讓 Visual Studio 直接連結目標機器上的 GDB，讓開發者可以同時使用 GDB 強大的功能與 Visual Studio 友善的介面。
分享者1：Herman Wu 吳宏彬(微軟資深平台架構技術經理) 題目：如何在 Windows 10上 開發 RPi 以及物聯網的應用。
Herman 這次 demo 了很多 Windows 10 IoT Core 在 Raspberry Pi 上的應用，包括有基本的 LED 燈控制、超音波距離感測等。
Lighting Talk
題目：Microsoft Windows 10 Iot with Raspberry Pi(Stone)
Stone 針對 Windows IoT 在 Pi 2 安裝與使用，提供了很多有用的資訊。例如官方安裝教學頁面，sample code 還有許多 IoT project。
歡迎大家來參加社群聚會，相關活動我們都會在網頁和 facebook 公告，如果有主題想分享也請來信 service AT raspberrypi.com.tw。
