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- --- 模块功能:串口1功能测试
- -- @author openLuat
- -- @module uart.uartTask
- -- @license MIT
- -- @copyright openLuat
- -- @release 2018.03.27
- module(...,package.seeall)
- require "utils"
- require "pm"
- require "sys"
- require "log"
- require "funlib"
- require "nvm"
- --[[
- 功能定义:
- uart按照帧结构接收外围设备的输入,收到正确的指令后,回复ASCII字符串
- 帧结构如下:
- 帧头:1字节,0x01表示扫描指令,0x02表示控制GPIO命令,0x03表示控制端口命令
- 帧体:字节不固定,跟帧头有关
- 帧尾:1字节,固定为0xC0
- 收到的指令帧头为0x01时,回复"CMD_SCANNER\r\n"给外围设备;例如接收到0x01 0xC0两个字节,就回复"CMD_SCANNER\r\n"
- 收到的指令帧头为0x02时,回复"CMD_GPIO\r\n"给外围设备;例如接收到0x02 0xC0两个字节,就回复"CMD_GPIO\r\n"
- 收到的指令帧头为0x03时,回复"CMD_PORT\r\n"给外围设备;例如接收到0x03 0xC0两个字节,就回复"CMD_PORT\r\n"
- 收到的指令帧头为其余数据时,回复"CMD_ERROR\r\n"给外围设备;例如接收到0x04 0xC0两个字节,就回复"CMD_ERROR\r\n"
- ]]
- --串口ID,1对应uart1
- --如果要修改为uart2,把UART_ID赋值为2即可
- -- air720UH 可用串口1和2,rfid串口用1
- -- air724UH 可用串口1、2、3,rfid串口用3
- local UART_ID = nvm.get("rfidUartId")
- local UART_ID_BAUD_RATE = nvm.get("rfidUartBaudRate")
- local rfidOfflineTimeout = nvm.get("rfidOfflineTimeout")
- local rfidMinDiffTime = nvm.get("rfidMinDiffTime") or 3
- --local UART_ID = 3
- --帧头
- local FRM_HEAD = 0xaa2801
- --rfid 去重缓存的超时时间
- local rfid_buffer_timeout = 20
- local rfid_buffer_max_count = 100
- --串口读到的数据缓冲区
- local rdbuf = ""
- --rfid串口初始化定参数时器
- local rfid_uart_config_init_timer_id = nil
- local rfidType = nvm.get("rfidType")
- local timerSyncResult = false
- --是否厂测读rfid标签模式
- local isFactoryTestReadRfidMode = false
- --厂测模式读rifd号
- local factoryTestReadRfid = ""
- --是否已开始心跳
- local isStartHeartbeat = false
- local isCmdReadRfidMode = false
- local cmdReadRfid = ""
- --重置时间差值
- local resetTime = 0
- require "misc"
- local function getTime()
- local tm = misc.getClock()
- return string.format("%04d/%02d/%02d,%02d:%02d:%02d", tm.year, tm.month, tm.day, tm.hour, tm.min, tm.sec)
- end
- --初始化rfid缓冲池
- local start_time = os.time()
- local rfids_buf = {["start_time"]=start_time,["rfid_count"]=0,["buf"]={}}
- --rfid缓冲池最大存储标签个数
- local rfidsBufMaxCount = 3000
- --[[
- 函数名:parse_dahua
- 功能 :按照帧结构解析处理一条完整的帧数据
- 参数 :
- data:所有未处理的数据
- 返回值:第一个返回值是一条完整帧报文的处理结果,第二个返回值是未处理的数据
- ]]
- local function parse_dahua(data)
- local rfidRssiFilterVal = nvm.get("rfidRssiFilterVal")
- if not data then return end
- if data:len() < 14 then
- --log.info("uartTaskDahua.parse_dahua","data length < 42", data:toHex())
- return false, data
- end
-
- local res,frm_head_pos = string.find( data, string.char(0xaa)..string.char(0x55)..string.char(0xc) )
-
- if not res then
- log.error("uartTaskDahua.parse_dahua","FRM_HEAD not found,drop it! data:", data:toHex())
- return false
- end
- -- 截取包含侦头0xaa55开始的数据包
- local sub_data = data:sub(frm_head_pos-2,-1)
- local frm_len = string.byte(sub_data,3)
-
- --检测到不够一个完整包,返回不完整的部分
- if res and (#sub_data < frm_len+3) then
- log.warn("uartTaskDahua.parse_dahua","only find sub frm_data,return and wait... data:",data:toHex(), "sub_data:",sub_data:toHex(),"frm_len:",frm_len)
- return false, sub_data
- end
-
- --检测是否有结束符0x0d0a,没有结束符则丢弃
- local res1,tail_pos = string.find( sub_data, string.char(0x0d)..string.char(0x0a) )
- if not res1 then
- log.error("uartTaskDahua.parse_dahua","FRM_TAIL not found,drop it! data:", data:toHex(), "sub_data:",sub_data:toHex())
- return false
- end
- --检测包含侦头和侦尾的数据包长度是否合法,不合法则丢弃
- if (tail_pos > frm_len+3) or (tail_pos < frm_len+3) then
- log.warn("uartTaskDahua.parse_dahua","only find sub frm_data,return and wait... data:",data:toHex(), "sub_data:",sub_data:toHex(),"frm_len:",frm_len,"tail_pos:",tail_pos)
- return false, sub_data:sub(tail_pos+1,-1)
- end
- local frm_data = sub_data:sub(1,tail_pos)
-
- --解析rfid
- local rfid_info = {}
- rfid_info.crc = string.byte(frm_data,4)
- --rfid_info.sn = string.byte(frm_data,5)
- rfid_info.id = frm_data:sub(6,9):toHex()
- rfid_info.type = string.byte(frm_data,10)
- rfid_info.status = string.byte(frm_data,11)
- rfid_info.version = string.byte(frm_data,12)
- rfid_info.rssi = string.byte(frm_data,13)
-
- --log.info("uartTaskDahua.parse_dahua", "frm_data:", frm_data:toHex())
- if rfidRssiFilterVal > 0 and rfid_info.rssi > rfidRssiFilterVal then
- log.info("uartTaskDahua.parse_dahua", "rfid_info.rssi > ".. rfidRssiFilterVal..", drop it! rfid_info.rssi =", rfid_info.rssi)
- --大于一个完整包,返回剩余部分
- if #sub_data > tail_pos then
- return false, sub_data:sub(tail_pos+1,-1)
- end
- return false
- end
- local cur_time = os.time()
- if resetTime >= 1 or resetTime <= -1 then
- cur_time = cur_time + resetTime
- --log.info("uartTaskDahua.parse_dahua","resetTime:",resetTime,",reset to time:",cur_time)
- end
-
- --进入厂测读rfid标签信号模式
- if isFactoryTestReadRfidMode then
- --读到rfid标签信号后,退出厂测模式
- if factoryTestReadRfid == rfid_info.id then
- sys.publish("factory_test_read_rfid_success",{rssi=rfid_info.rssi,rfid=rfid_info.id})
- isFactoryTestMode = false
- factoryTestReadRfid = ""
- end
- --大于一个完整包,返回剩余部分
- if #sub_data > tail_pos then
- return true, sub_data:sub(tail_pos+1,-1)
- end
- return true
- end
- --进入指令读rfid标签信号模式
- if isCmdReadRfidMode then
- --读到rfid标签信号后,退出读标签模式
- if cmdReadRfid == rfid_info.id then
- log.info("uartTaskDahua.parse_dahua", "rfid_info:", json.encode(rfid_info))
- sys.publish("cmd_read_rfid_success",{rssi=rfid_info.rssi,rfid=rfid_info.id})
- isCmdReadRfidMode = false
- cmdReadRfid = ""
- end
- --大于一个完整包,返回剩余部分
- if #sub_data > tail_pos then
- return true, sub_data:sub(tail_pos+1,-1)
- end
- return true
- end
- --新增数据
- if not rfids_buf["buf"][rfid_info.id] then
- --log.info(">>>>>>> push rfid to buf,rfid:", rfid_info.id)
- if rfids_buf.rfid_count > rfidsBufMaxCount then
- log.warn("uartTaskDahua.parse_dahua", "rfids_buf.rfid_count > ", rfidsBufMaxCount, ", drop it", rfid_info.id)
- --大于一个完整包,返回剩余部分
- if #sub_data > tail_pos then
- return true, sub_data:sub(tail_pos+1,-1)
- end
- return true
- end
- rfids_buf.rfid_count = rfids_buf.rfid_count + 1
- --location:0x40 rfid进入
- rfids_buf["buf"][rfid_info.id] = {["id"]=rfid_info.id,["first_time"]=cur_time,["time"]=cur_time,["recv_count"]=1,["rssi"]=rfid_info.rssi,["type"]=rfid_info.type,["status"]=rfid_info.status,["sn"]=0,["location"]=0x40}
-
- --发布rfid首个信号
- sys.publish("pub_packet_data_dahua_rfid_info", rfids_buf["buf"][rfid_info.id])
- --大于一个完整包,返回剩余部分
- if #sub_data > tail_pos then
- return true, sub_data:sub(tail_pos+1,-1)
- end
- return true
- end
- local first_time = rfids_buf["buf"][rfid_info.id]["first_time"]
- --更新数据
- local recv_count = rfids_buf["buf"][rfid_info.id]["recv_count"] + 1
- local rfid_sn = rfids_buf["buf"][rfid_info.id]["sn"]
- rfid_sn = (rfid_sn+1 < 0xff) and (rfid_sn+1) or 0
- rfids_buf["buf"][rfid_info.id] = {["id"]=rfid_info.id,["first_time"]=first_time,["time"]=cur_time,["recv_count"]=recv_count,["rssi"]=rfid_info.rssi,["type"]=rfid_info.type,["status"]=rfid_info.status,["sn"]=rfid_sn,["location"]=0x40}
- --log.info(">>>>>>> update rfid_buf,rfid:", rfid_info.id, ", recv_count:", recv_count)
- --大于一个完整包,返回剩余部分
- if #sub_data > tail_pos then
- return true, sub_data:sub(tail_pos+1,-1)
- end
- return true
- end
- --[[
- 函数名:proc
- 功能 :处理从串口读到的数据
- 参数 :
- data:当前一次从串口读到的数据
- 返回值:无
- ]]
- local function proc(data)
- if not data or string.len(data) == 0 then return end
- if not rfidType then
- log.info("uartTaskDahua.proc","rfidType undefined!!")
- rfidType = nvm.get("rfidType")
- return false
- end
- --追加到缓冲区
- rdbuf = rdbuf..data
-
- local result,unproc
- unproc = rdbuf
- --根据帧结构循环解析未处理过的数据
- while true do
- if rfidType == 'dahua' then
- result,unproc = parse_dahua(unproc)
- else
- log.info("uartTaskDahua.proc","rfidType invalid!!")
- return false
- end
- if not unproc or unproc == "" or not result then
- break
- end
- end
- rdbuf = unproc or ""
- if #rdbuf > 1000 then
- log.warn("uartTaskDahua.proc","rdbuf length > 1000!! rdbuf:", #rdbuf)
- end
- end
- --[[
- 函数名:read
- 功能 :读取串口接收到的数据
- 参数 :无
- 返回值:无
- ]]
- local function read()
- local data = ""
- --底层core中,串口收到数据时:
- --如果接收缓冲区为空,则会以中断方式通知Lua脚本收到了新数据;
- --如果接收缓冲器不为空,则不会通知Lua脚本
- --所以Lua脚本中收到中断读串口数据时,每次都要把接收缓冲区中的数据全部读出,这样才能保证底层core中的新数据中断上来,此read函数中的while语句中就保证了这一点
- while true do
- data = uart.read(UART_ID,"*l")
- if not data or string.len(data) == 0 then break end
- --打开下面的打印会耗时
- --log.info("uartTask.read bin",data)
- --log.info("uartTask.read hex",data:toHex())
-
- --处理串口收到的rfid数据
- proc(data)
- end
- end
- --[[
- 函数名:write
- 功能 :通过串口发送数据
- 参数 :
- s:要发送的数据
- 返回值:无
- ]]
- function write(s)
- log.info("uartTask.write",s)
- uart.write(UART_ID,s.."\r\n")
- end
- local function writeOk()
- log.info("uartTask.writeOk")
- end
- --等待时间同步成功消息通知
- sys.subscribe("TIMER_SYNC_SUCCESS", function ( ... )
- log.info("uartTaskDahua.subscribe","TIMER_SYNC_SUCCESS")
- timerSyncResult = true
- sys.publish("MESSAGE_TYPE_START_HEARTBEAT")
- end)
- --启动厂测读rfid标签模式,读取指定rfid标签信号
- sys.subscribe("factory_test_start_read_rfid", function ( data )
- if data.rfid then
- log.info("uartTaskDahua.subscribe","factory test mode,start read rifd:",data.rfid)
- isFactoryTestReadRfidMode = true
- factoryTestReadRfid = data.rfid
- if not isStartHeartbeat then
- sys.publish("MESSAGE_TYPE_START_HEARTBEAT")
- end
- else
- log.error("uartTaskDahua.subscribe.factory_test_start_read_rfid","data.rfid not existed!!")
- end
- end)
- --退出厂测读rfid标签模式
- sys.subscribe("factory_test_stop_read_rfid", function ( )
- log.info("uartTaskDahua.subscribe.factory_test_stop_read_rfid","factory test stop read rifd")
- isFactoryTestReadRfidMode = false
- factoryTestReadRfid = ""
- end)
- --启动读rfid标签模式,读取指定rfid标签信号
- sys.subscribe("cmd_start_read_rfid", function ( data )
- if not isStartHeartbeat then
- sys.publish("MESSAGE_TYPE_START_HEARTBEAT")
- end
- if data.rfid then
- log.info("uartTaskDahua.subscribe.cmd_start_read_rfid","cmd start read rifd:",data.rfid)
- isCmdReadRfidMode = true
- cmdReadRfid = data.rfid
- else
- log.error("uartTaskDahua.subscribe.cmd_start_read_rfid","data.rfid not existed!!")
- end
- end)
- --退出厂测读rfid标签模式
- sys.subscribe("cmd_stop_read_rfid", function ( )
- log.info("uartTaskDahua.subscribe.cmd_stop_read_rfid","cmd stop read rifd")
- isCmdReadRfidMode = false
- cmdReadRfid = ""
- end)
- --保持系统处于唤醒状态,此处只是为了测试需要,所以此模块没有地方调用pm.sleep("uartTask")休眠,不会进入低功耗休眠状态
- --在开发“要求功耗低”的项目时,一定要想办法保证pm.wake("uartTask")后,在不需要串口时调用pm.sleep("uartTask")
- pm.wake("uartTask")
- --sys.timerStart(function ( ... )
-
- --初始化rfid串口配置参数
- rfid_uart_config_init_timer_id = sys.timerLoopStart(function ()
- if not UART_ID then
- log.info("UART_ID empty, attempt from nvm.get")
- UART_ID = nvm.get("rfidUartId")
- return false
- end
- if not UART_ID_BAUD_RATE then
- log.info("UART_ID_BAUD_RATE empty, attempt from nvm.get")
- UART_ID_BAUD_RATE = nvm.get("rfidUartBaudRate")
- return false
- end
- if not rfid_uart_config_init_timer_id then
- log.info("rfid_uart_config_init_timer_id empty")
- return false
- end
- log.info("init rfid uart","UART_ID:",UART_ID,"UART_ID_BAUD_RATE:",UART_ID_BAUD_RATE)
- --注册串口的数据接收函数,串口收到数据后,会以中断方式,调用read接口读取数据
- --uart.on(UART_ID,"receive",read)
- uart.on(UART_ID,"receive",function() sys.publish("UART_RECEIVE") end)
- --注册串口的数据发送通知函数
- uart.on(UART_ID,"sent",writeOk)
- --配置并且打开串口
- --波特率,可选1200,2400,4800,9600,10400,14400,19200,28800,38400,57600,115200,230400,460800,921600
- --uart.setup(UART_ID,115200,8,uart.PAR_NONE,uart.STOP_1)
- uart.setup(UART_ID,UART_ID_BAUD_RATE,8,uart.PAR_NONE,uart.STOP_1)
- --如果需要打开“串口发送数据完成后,通过异步消息通知”的功能,则使用下面的这行setup,注释掉上面的一行setup
- --uart.setup(UART_ID,115200,8,uart.PAR_NONE,uart.STOP_1,nil,1)
- log.info("uart timer loop stop","rfid_uart_config_init_timer_id:",rfid_uart_config_init_timer_id)
- sys.timerStop(rfid_uart_config_init_timer_id)
- end, 1000)
- --end, 10000)
- local function taskRead()
- --等心跳开启时,再开始接收串口rfid数据
- while true do
- log.info("uartTaskDahua.taskRead","wait start_rfid_upload_task message ...")
- local res,data = sys.waitUntil("start_rfid_upload_task", 3600*1000)
- if res then
- log.info("uartTaskDahua.taskRead","receive start_rfid_upload_task messages, start UART_RECEIVE task...")
- isStartHeartbeat = true
- break
- else
- log.info("uartTaskDahua.taskRead","wait start_rfid_upload_task timeout")
- end
- end
- local cacheData = ""
- local count = 0
- while true do
- cacheData = uart.read(UART_ID,"*l")
- if cacheData == "" then
- if not sys.waitUntil("UART_RECEIVE",100) then
- --log.info("uartTask.taskRead","100ms no data")
- end
- else
- --log.info("uartTask.read hex",cacheData:toHex())
- proc(cacheData)
-
- cacheData = ""
- count = count + 1
- if count > 1200 then
- sys.wait(50)
- count = 0
- end
- end
- end
- end
- --启动串口数据接收任务
- sys.taskInit(taskRead)
- sys.timerLoopStart(function()
- log.info("uartTaskDahua.timerLoopStart","打印占用的内存:", _G.collectgarbage("count"))-- 打印占用的RAM
- log.info("uartTaskDahua.timerLoopStart","打印可用的空间", rtos.get_fs_free_size())-- 打印剩余FALSH,单位Byte
- log.info("uartTaskDahua.timerLoopStart", "rfidMinDiffTime:",rfidMinDiffTime)
- end, 10000)
- --rfid离线检测任务
- sys.taskInit(function()
- while true do
- while true do
- if rfids_buf["rfid_count"] > 0 then
- break
- else
- log.info("uartTaskDahua.rfidOfflineCheckTask","rfids_buf empty,wait ...")
- sys.wait(1000)
- end
- end
-
- local now = os.time()
- if resetTime >= 1 or resetTime <= -1 then
- now = now + resetTime
- --log.info("uartTaskDahua.rfidOfflineCheckTask","resetTime:",resetTime,",reset to time:",now)
- end
- --log.info("uartTaskDahua.rfidOfflineCheckTask","start time:",now)
- local tmp = {["rfid_count"]=0,["buf"]={}}
- local checkCount = 0
- local onlineCount = 0
- local offlineCount = 0
- local totalCount = 0
- for rfid, rfid_info in pairs(rfids_buf["buf"]) do
- totalCount = totalCount + 1
- if rfid_info.time and rfid_info.time > 0 then
- checkCount = checkCount + 1
- if now - rfid_info.time <= rfidOfflineTimeout then
- if rfid == "953651BE" then
- --log.info("uartTaskDahua.rfidOfflineCheckTask","rfid is online,skip! rfid:", rfid, "rfid_info.time:", rfid_info.time)
- end
- tmp["buf"][rfid] = rfid_info
- tmp["rfid_count"] = tmp["rfid_count"] + 1
- onlineCount = onlineCount + 1
- else
- --首末次信号时间差超过最小时间差值,才认为是有效的末次信号
- if rfid_info.time - rfid_info.first_time > rfidMinDiffTime then
- offlineCount = offlineCount + 1
- if rfid == "953651BE" then
- log.info("uartTaskDahua.rfidOfflineCheckTask","rfid offline! rfid:", rfid, "rfid_info.time:", rfid_info.time, "now:", now, "rfidOfflineTimeout:", rfidOfflineTimeout)
- end
- --上报离线后,末次信号
- if rfids_buf["buf"][rfid] then
- --location:0x80 rfid离开
- rfid_info.location = 0x80
- sys.publish("pub_packet_data_dahua_rfid_info", rfid_info)
- if offlineCount >= 100 and offlineCount%100 == 0 then
- --log.info("uartTaskDahua.rfidOfflineCheckTask","wait 3s")
- sys.wait(50)
- end
- end
- else
- log.info("uartTaskDahua.rfidOfflineCheckTask","drop it, because: rfid_info.time - rfid_info.first_time <=",rfidMinDiffTime)
- end
- end
- end
- end
- rfids_buf = tmp
- log.info("uartTaskDahua.rfidOfflineCheckTask", "totalCount:",totalCount, "checkCount:",checkCount, "onlineCount:",onlineCount, "offlineCount:",offlineCount)
- sys.wait(rfidOfflineTimeout*1000 + 2000)
- end
- end)
- --重置系统时间消息(可以校正成自定义时间)
- sys.subscribe("RESET_CLOCK_TIME", function ( diffTime )
- if type(diffTime) == "number" then
- resetTime = diffTime
- log.info("uartTaskDahua.subscribe.RESET_CLOCK_TIME","diffTime:",diffTime)
- end
- end)
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