From 4cfb26b1aaaf4c1470770e7367453ff9c599b60c Mon Sep 17 00:00:00 2001
From: "suguo.yao" <ysg@myschools.me>
Date: Thu, 16 Dec 2021 10:59:48 +0800
Subject: [PATCH] init

---
 .gitignore |  6 ++++++
 Makefile   |  8 ++++++++
 go.mod     |  5 +++++
 main.go    | 33 +++++++++++++++++++++++++++++++++
 readme.md  | 21 +++++++++++++++++++++
 5 files changed, 73 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 go.mod
 create mode 100644 main.go
 create mode 100644 readme.md

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ec2c5ae
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+go.sum
+ble-ibeacon
+*.exe
+*.bin
+logs/
+.vscode/
\ No newline at end of file
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..21ba741
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,8 @@
+.PHONY: arm
+arm:
+	go mod tidy
+	GOOS=linux GOARCH=arm GOARM=7 go build 
+
+.PHONY: release
+release: arm
+	scp ./ble-ibeacon pi@192.168.0.21:~/
\ No newline at end of file
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..177e9aa
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module myschools.me/suguo/ble-ibeacon
+
+go 1.17
+
+require github.com/paypal/gatt v0.0.0-20151011220935-4ae819d591cf
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..f548dcc
--- /dev/null
+++ b/main.go
@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/paypal/gatt"
+	"github.com/paypal/gatt/examples/option"
+)
+
+func onPerhipheralDiscovered(p gatt.Peripheral, a *gatt.Advertisement, rssi int) {
+	fmt.Println(string(a.ManufacturerData))
+}
+
+func onStateChanged(device gatt.Device, s gatt.State) {
+	switch s {
+	case gatt.StatePoweredOn:
+		device.Scan([]gatt.UUID{}, true)
+		return
+	default:
+		device.StopScanning()
+	}
+}
+
+func main() {
+	dev, err := gatt.NewDevice(option.DefaultClientOptions...)
+	if err != nil {
+		log.Fatalf("Failed to open device, err:%s\n", err)
+	}
+	dev.Handle(gatt.PeripheralDiscovered(onPerhipheralDiscovered))
+	dev.Init(onStateChanged)
+	select {}
+}
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..e62af89
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,21 @@
+# 蓝牙通讯例子
+
+### 概述
+希望用于通过蓝牙RSSI值判断距离的研究。
+
+### 组件
+- github.com/paypal/gatt
+
+### 部署
+- sudo hciconfig hci0 down
+- sudo service bluetooth stop
+
+### QA
+- Failed to open device, err:no supported devices available
+    > 执行权限不够导致设备找不到，记得sudo 
+- 查看raspberrypi几位系统
+    > getconf LONG_BIT
+- 查看操作系统信息
+    > lsb_release -a
+- 直接查看系统的架构
+    > arch
\ No newline at end of file