HF-BL200A Low Energy Bluetooh
（
BLE 4.1
）
Module User Manual
Shanghai High Flying Electronics Technology Co., Ltd www.hi-flying.com
- 27
-
10. Slave Latency<=4
11. connSupervision Timeout<=6 seconds
12. IntervalMax*(Slave 1)*3<connSupervisionTimeout
"
AT:ERP\r\n
" means invalid command, query failed
4.3.6.
Set Baud rate
Function
：
modify UART Baud rate
Effective time
：
effective after receiving the success feedback data
Command
：
"
AT:BPS-
"+baud rate+<CR><LF>
Baudrate:6 character
，
’0’~’9’ means 0~9,”115200”-> decimal 115200
Feedback
：
"
AT:OK\r\n
" means success
"
AT:WRONG\r\n
" means invalid parameter, modify failed
"
AT:ERP\r\n
" means invalid command, modify failed.
Remark
：
only apply regular baud rate 4800,9600,19200,38400,57600,115200, other parameter
would be consider invalid.
4.3.7.
Query Baud rate
Function
：
query current baud rate
Effective time
：
immediately
Command
：
"
AT:BPS
？
"+<CR><LF>
Feedback
：
"
AT:BPS-
"+baud rate+<CR><LF> means success
Baudrate:6 character
，
’0’~’9’ means 0~9,”115200”-> decimal 115200,”038400”-> decimal
38400
"
AT:ERP\r\n
" means invalid command, query failed
