init

.gitignore

@@ -0,0 +1,6 @@
+go.sum
+ble-ibeacon
+*.exe
+*.bin
+logs/
+.vscode/

Makefile

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+.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:~/

go.mod

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+module myschools.me/suguo/ble-ibeacon
+
+go 1.17
+
+require github.com/paypal/gatt v0.0.0-20151011220935-4ae819d591cf

main.go

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+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 {}
+}

readme.md

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+# 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