通过 BLE 上的 ANT+FEC 将用户体重发送到 Smart Trainer

Question

有人知道如何将用户体重设置发送到室内 Smart Trainer 的数据页 55 吗？

我想更新用户权重，使成绩模拟更加真实。我已经设法成功发送了成绩（数据页 51）并且为用户权重实施相同的格式似乎没有做任何事情。

func sendUserConfig(_ peripheral: CBPeripheral, characteristics: CBCharacteristic, userWeight: Double)  {
    let userWeightKG = (400)
    
    let uWeightLSB = UInt8(Int(userWeightKG) & 0xFF)
    let uWeightMSB = UInt8(Int(userWeightKG) >> 8) & 0xFF
    
    print("<><>  uWeightLSB:\(uWeightLSB) uWeightMSB:\(uWeightMSB)")
    
    var rawArray = [UInt8]()
    rawArray.insert(0xA4, at:0)   //Sync
    rawArray.insert(0x09, at:1)   //Length
    rawArray.insert(0x4F, at:2)   //Acknowledge message type
    rawArray.insert(0x05, at:3)   //Channel
    rawArray.insert(0x37, at:4)   //Page 55
    rawArray.insert(uWeightLSB, at:5)
    rawArray.insert(uWeightMSB, at:6)
    rawArray.insert(0xFF, at:7)   // reserved
    rawArray.insert(0xFF, at:8)   // Bike Wheel Diameter Offset + Bike Weight LSN
    rawArray.insert(0xFF, at:9)   // Bike Weight MSB (0xFF = default invalid)
    rawArray.insert(0xFF, at:10)  // Bike Wheel Diameter (0xFF = default invalid)
    rawArray.insert(0x00, at:11)  // Gear Ratio (0x00 = default invalid)
    rawArray.insert(0xFF, at:12)  //ChkSum
    let data = Data(rawArray)
    
   peripheral.writeValue(data, for: characteristics, type: CBCharacteristicWriteType.withoutResponse)
  }

消息的框架格式

Answer 1

我缺少的是单位。用户体重数据需要以0.01kg为单位的数据，因此发送

40kg  =  40 / 0.01 = 4000
100kg = 100 / 0.01 = 10000

通过 BLE 上的 ANT+FEC 将用户体重发送到 Smart Trainer

Sending user weight to Smart Trainer via ANT+FEC over BLE

bluetooth

ios

swift