HI2115软件开发板V150版本AT+NSOST指令

1. 在HI2115里面，由于内存空间比较大，所以支持UDP发送指令AT+NSOST的分包

ret = sendto(socket, seq_num, data_string, length, msg_flags, (struct sockaddr *) &sock_address, sizeof(sock_address));

其中上面第2个参数，是分包的序号，从1-255

2. AT指令部分，看下面说的是6个参数可选，但是实际看代码发现，第6个参数不写的话，会报错

AT+NSOST=,,,,data>[,]

AT+NSOST=1,192.158.5.1,1024,2,AB30,1
1,2
O

AT指令的参数，第6个参数sequence就是函数里面的seq_num

 Socket number returned by +NSOCR
 IP address
 A number in the range 0-65535. This is the remote port that messages will be received on
 Decimal length of data to be sent.
 Data to be transmitted in hexstring format, or quoted string format.
 Sequence of data, range 1-255.If omit, will not report data sent status.
 The status of datagram.
0 Error
1 Sent

3. 第6个参数不写的话，会报错

    cause = at_get_uint8_param(AT_PARSE_SIXTH_PARAM_POS + num_of_flags, &seq_num, true);
    if (cause == AT_RET_PARAM_MISSING)
    {
        seq_num = NEUL_DATA_SENT_DATA_SEQ_INVALID;
    }
    else if ((cause != AT_RET_OK) || (seq_num == NEUL_DATA_SENT_DATA_SEQ_INVALID))
    {
        return AT_RET_SYNTAX_ERROR;
    }

 

转载于:https://www.cnblogs.com/429512065qhq/p/8950116.html