High-Flying Electronics Technology Co. Ltd HF-A11X 사용자 설명서
HF-A11x V3.1 User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
www.hi-flying.com
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{
u32
u32
cksum=0;
u16
*p=data;
while (len > 1)
{
cksum
cksum
+=
*p++;
len
-=2;
}
if
if
(len)
{
cksum += *(u8 *)p;
}
cksum = (cksum >> 16) + (cksum & 0xffff);
cksum += (cksum >>16);
return
~cksum;
}
---------------------------------------------
1.4.3. Configuration
Mode
In configuration mode, user can finish HF-A11x module configuration management and
parameters setting work. In work mode (Transparent Transmission or Agreement Transmission),
user can switch to the configuration mode through AT+instruction, detailed switch operation refer
to “AT+ instruction set” chapter.
parameters setting work. In work mode (Transparent Transmission or Agreement Transmission),
user can switch to the configuration mode through AT+instruction, detailed switch operation refer
to “AT+ instruction set” chapter.
1.4.4. Multi-TCP Link Connection
When HF-A11x module configured as TCP Server, it supports Multi-TCP link connection, and
maximum 32 TCP clients permit to connect to HF-A11x module. User can realize multi-TCP link
connection at each work mode.
Multi-TCP link connection will work as following structure:
Upstream: All dates from different TCP connection or client will be transmitted to the serial port as
maximum 32 TCP clients permit to connect to HF-A11x module. User can realize multi-TCP link
connection at each work mode.
Multi-TCP link connection will work as following structure:
Upstream: All dates from different TCP connection or client will be transmitted to the serial port as
a sequence.
Downstream: All data from serial port (user) will be duplicate and broadcast to every TCP
connection or client.
Detailed multi-TCP link data transmition structure as following figure:
Figure 14. Multi-TCP Link Data Transmition Structure