HF-BL200A Low Energy Bluetooh
（
BLE 4.1
）
Module User Manual
Shanghai High Flying Electronics Technology Co., Ltd www.hi-flying.com
- 26
-
1.
IntervalMax*
（
Slave 1
）《
=2 seconds
2.
IntervalMin>=20ms
3.
Inter20ms<=IntervalMax
4.
Slave Latency<=4
5.
connSupervision Timeout<=6 seconds
6.
IntervalMax*(Slave 1)*3<connSupervisionTimeout
Feedback
：
"
AT:WRONG\r\n
" means invalid parameter, modify failed
"
AT:OK\r\n
" means success, run with new connect interval
"
AT:ERP\r\n
" means invalid command, modify failed
4.3.5.
Query Connect Parameter
Function
：
Query module connect parameter
Effective time
：
immediately
Command
：
"
AT:CIT?
"+<CR><LF>
Feedback
：
"
AT+CIT-
"+InteInteSlave connSupervision <CR><LF>
IntervalMin
：
4 character means
，
HighByte |...| LowByte;’0’~’9’ means 0~9
，
”0200”-> decimal
200*1.25ms
IntervalMax
：
4 character means
，
HighByte |...| LowByte;’0’~’9’ means 0~9
，
”1000”->
decimal1000*1.25ms
Slave Latency:1 character
，
’0’~’9’ means 0~9
，
connSupervision Timeout
：
4 character means
，
HighByte|...|LowByte
，
’0’~’9’ means
0~9
，
”2000”-> decimal 2000*10ms
when connect to IOS APP
，
Apple has their own regulation, four parameter must comply:
7.
IntervalMax*
（
Slave 1
）《
=2 seconds
8.
IntervalMin>=20ms
9.
Inter20ms<=IntervalMax
