Waveshare WIFI232-B2 User Manual page 86

WIFI232-B2 User Manual
5.2.1.63 AT+HEARTDT
Function: Set/Query the data of heartbeat packet
Format:
Query Operation:
AT+HEARTDT<CR>
+ok=<usr><CR><LF><CR><LF>
Set Operation:
AT+HEARTDT=<usr><CR>
+ok<CR><LF><CR><LF>
Parameters:

usr: the length much less than 40 bytes. (HEX)
5.2.1.64 AT+HEARTTM
Function: Set/Query interval of heartbeat packet transmission
Format:
Query Operation:
AT+HEARTTM<CR>
+ok=<time><CR><LF><CR><LF>
Set Operation:
AT+HEARTTM=<time><CR>
+ok<CR><LF><CR><LF>
Parameters:

time: 1-65535s. It is 30s by default
5.2.1.65 AT+REBOOTEN
Function: Enable/Disable Boot Timing function
Format:
Query Operation:
AT+REBOOTEN<CR>
+ok=<sta.><CR><LF><CR><LF>
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