import time
from datetime import datetime

recvData = bytearray() #接收的数据存放此数组
startTime = time.time() 

# 将bytearray以字为单位转换成16进制字符串，方便显示
def wordData2HexStr(data):
    ret = ' '.join(data[i:i+2].hex() for i in range(0, len(data), 2))
    return ret.upper()

# 获取当前时间字符串
def nowStr():
    now = datetime.now()
    ret = now.strftime('%H:%M:%S.') + f"{now.microsecond // 1000:03d}"
    return ret

# 启动函数，命令开始会调用此函数
def start():
    global tsdb
    log_i('----------------- ' + cmdInfo['name'] + ' ----------------')
    
    startTime = time.time() #记录启动时间
    
    recvData = bytearray() #清空接收数组

    attr = cmdInfo['attr']
    cmdStr = attr['data'] + "\n" #组合要发送的报文，十六进制字符串
            
    send(bytearray(cmdStr, encoding='utf-8'))
    
    log_d(f"[{nowStr()}]TX:{cmdStr}")
        
    return True

# 接收数据处理函数，当收到数据会调用此函数
def recvDataHandler(data):
    global recvData
    global tsdb,_G
    recvData = recvData + bytearray(data) 
    tmpData = bytes(recvData).decode('utf-8')
    
# 此函数会被重复调用，间隔10毫秒，直到finish()        
def loop():
    global recvData
    if time.time() > startTime + int(cmdInfo['attr']['rsp_timeout']) / 1000.0:
        if len(recvData) > 0:
            log_w(f"[{nowStr()}]RX timeout:{wordData2HexStr(recvData)}")
        else:
            log_w(f"[{nowStr()}]RX timeout")
        log_e(f"[{devInfo['name']}]{cmdInfo['name']} fail.")
        finish()