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1.解决其他设备无法接受回调问题

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2.解决设备分包返回数据，解析问题
This commit is contained in:
peng fan 2024-08-08 15:21:00 +08:00
parent a2e7ad12f4
commit a569cabf76
1 changed files with 47 additions and 35 deletions
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82
pages/demo/demo.vue
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@ -265,7 +265,8 @@ export default {
console.log('未加工的数据', Array.from(Uint8ArrayData))
for(let i = 0; i < Math.ceil(data.byteLength / 20); i++){
let buffer = new ArrayBuffer(20)
let length = i === (Math.ceil(data.byteLength / 20)-1)?data.byteLength%20:20
let buffer = new ArrayBuffer(length)
let binaryData = new Uint8Array(buffer)
for(let j = 0; j < 20; j++){
if(i * 20 + j < data.byteLength){
@ -277,7 +278,7 @@ export default {
serviceId: that.serviceId,
characteristicId: that.characteristicId2,
value: buffer,
success(write) {
success() {
const hexString = Array.from(binaryData, byte =>
byte.toString(10)).join(',')
console.log('写入的数据', hexString)
@ -290,9 +291,38 @@ export default {
})
}
},
// 解析特征值返回数据
parsingdata(binaryData) {
const that = this
// 明文 0x20 SM4事先约定密钥 0x22
if(binaryData[7] === 0x20) {
if(binaryData[12] === 48 && binaryData[13] === 144){
const publicKey = binaryData.slice(15, 31)
console.log('公钥', Array.from(publicKey))
that.publicKey = publicKey
}
} else if(binaryData[7] === 0x22) {
const cebBinaryData = binaryData.slice(12, binaryData.length - 2)
console.log('sm4返回参数', Array.from(cebBinaryData))
const key = new Uint8Array(16)
for (let i = 0; i < that.lockId.length; i++) {
key[i] = that.lockId.charCodeAt(i)
}
const decrypted = sm4.decrypt(cebBinaryData, key, { mode: 'ecb', output: 'array' })
console.log('ecb解密后的数据', decrypted)
if(decrypted[0] === 48 && decrypted[1] === 145) {
that.commKey = decrypted.slice(3, 19)
that.signKey = decrypted.slice(19, 35)
console.log('commKey', Array.from(that.commKey))
console.log('signKey', Array.from(that.signKey))
}
}
},
// 监听特征值变化
notifyBLECharacteristicValueChange() {
const that = this
let completeData
let length
uni.notifyBLECharacteristicValueChange({
state: true,
deviceId: that.deviceId,
@ -308,27 +338,21 @@ export default {
if(binaryData[0] === 239 && binaryData[1] === 1 && binaryData[2] === 238 && binaryData[3] === 2) {
console.log('设备返回的数据', Array.from(binaryData), Array.from(binaryData, byte =>
byte.toString(16)).join(','))
// 明文 0x20 SM4事先约定密钥 0x22
if(binaryData[7] === 0x20) {
if(binaryData[12] === 48 && binaryData[13] === 144){
const publicKey = binaryData.slice(15, 31)
console.log('公钥', Array.from(publicKey))
that.publicKey = publicKey
}
} else if(binaryData[7] === 0x22) {
const cebBinaryData = binaryData.slice(12, binaryData.length - 2)
console.log('sm4返回参数', Array.from(cebBinaryData))
const key = new Uint8Array(16)
for (let i = 0; i < that.lockId.length; i++) {
key[i] = that.lockId.charCodeAt(i)
}
const decrypted = sm4.decrypt(cebBinaryData, key, { mode: 'ecb', output: 'array' })
console.log('ecb解密后的数据', decrypted)
if(decrypted[0] === 48 && decrypted[1] === 145) {
that.commKey = decrypted.slice(3, 19)
that.signKey = decrypted.slice(19, 35)
console.log('commKey', Array.from(that.commKey))
console.log('signKey', Array.from(that.signKey))
length = binaryData[8] * 256 + binaryData[9]
if(length + 14 > binaryData.length) {
completeData = binaryData
} else {
that.parsingdata(binaryData)
}
} else {
if(completeData.length > 0) {
const combinedArray = new Uint8Array(completeData.length + binaryData.length)
combinedArray.set(completeData, 0);
combinedArray.set(binaryData, completeData.length)
completeData = combinedArray
if(length + 14 === completeData.length) {
that.parsingdata(completeData)
completeData = new Uint8Array(0)
}
}
}
@ -373,18 +397,6 @@ export default {
}
that.showList = false
that.notifyBLECharacteristicValueChange()
if(uni.$u.os() === 'android') {
uni.setBLEMTU({
deviceId: that.deviceId,
mtu: 256,
success() {
console.log('mtu设置成功')
},
fail(res) {
console.log('mtu设置失败', res)
}
})
}
uni.showToast({
title: '数据获取成功',
icon: 'none',