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Chapter 2 – AT Commands
Multi-Tech Systems, Inc. SocketWireless Bluetooth AT Commands (S000360H) 24
Write Memory Locations (S-Registers) – Device
Configuration Commands
S-Registers refer to memory locations used for configuration. The SW commands are used to assign values to
various registers in the device's flash memory that are stored in nonvolatile memory.
SW20 Write UART Settings
Use SW20 to configure UART settings.
The S-Registers refer to memory locations used for configuration.
The S commands are used to assign values to various registers stored in nonvolatile memory.
Format: ATSW20,<Baud Rate>,<Parity>,<Stop Bits>,<Store>
Parameters:
Baud Rates: 1200 – 921.6Kbps, enter ASCII Value from the table below.
Note: Calculating and setting custom baud rates not listed in the table: as
long as the equation BAUDRATE *0.004096 produces an integer value, then
there will be 0% error in clocking for the baud rate.
Baud Rate ASCII Value Error
same 0 -
1200 5 1.73%
2400 10 1.73%
4800 20 1.73%
9600 39 -0.82%
19.2k 79 0.45%
38.4k 157 -0.18%
57.6k 236 0.03%
115.2k 472 0.03%
230.4k 944 0.03%
460.8k 1887 -0.02%
921.6k 3775 0.00%
Parity: 0 = NONE
1 = ODD
2 = EVEN
Stop Bits: 0 = ONE
1 = TWO
Store Parameters: 0 = Do Not Store
1 = Store Parameters in Flash
Factory Default: Baudrate = 39, Parity = 0, Stop Bits = 0 (8, N, 1 w/ hardware flow control
RTS/CTS enabled)
EXAMPLE:
TYPE: ATSW20,39,0,0,1<cr> // 9600 8,N,1 store in flash
REPLY: This unique Command does not reply with “OK” or “ERROR” because of
internal UART data processing limitations and response timing.
Read Using: ATSI,8
Notes:
• Flow control is always enabled, short CTS/RTS together if not used.
• The RTS line of the radio will be low when the radio is ready to receive data and high
when its buffer is full. When RTS goes high wait until it returns to low before sending
more data to avoid losing information.
• To reconfigure SocketWireless to the default factory settings, apply 3.3vdc on PIO#4
during initial power up for >2sec.
- AT Commands 1
- Reference Guide 1
- Table of Contents 3
- Chapter 1 – Introduction 5
- Changing Configuration 6
- Using Multi-Point Mode 8
- Multipoint Examples 9
- Multi-Point Test Scenarios 10
- Repeater Mode 12
- Chapter 2 - AT Commands 13
- URST Reset 14
- FRST Factory Reset 14
- SI Status Information 15
- Security Commands 19
- Set and Read Device Name 20
- RSN Read Service Name 21
- SP Set PIN 22
- OP Overwrite PIN 23
- Configuration Commands 24
- SW22 Write PIO Direction 26
- SW23 Write PIO Level 27
- SW26 Lock User Settings 29
- SW27 Write LED Rate 29
- SW29 Write PIN Lock Mode 30
- SW30 Write Deep Sleep Mode 30
- Inquiry Commands 31
- Connect as Master Commands 32
- DC Dial Channel 33
- DL Dial Last 34
- LAST Read Last Address 34
- MACLR Master Address Clear 35
- Connect As Slave Command 36
- Disconnect Commands 36
- About Command/Data Mode 37
- Data Mode Commands 37
- Utilities – Cancel Command 38
- Pairing Commands 39
- Low Power Modes Using Sniff 40
- SNIFF Enable Sniff 40
- SSNIFF Enable Auto Sniff 41
- CSNIFF Clear Sniff 41
- XSNIFF Exit Sniff Mode 41
- PARK Enable Park 42
- XPARK Exit Park 42
- Golden Receive Power Range 42
- RSSI Get RSSI Value 42
- LQ Get Link Quality 43
- Max Power Command 44
- Variable Storage Commands 45
- PIO Logic Commands 46
- Commands 47
- FTP Client 48
- DHFTP Dial Hang Up FTP 49
- FTPB FTP Browse 49
- FTP Push/Pull Commands 51
- FTP Server 52
- DOPP Dial OPP 53
- DHOPP Dial Hang Up OPP 53
- OPP Push/Pull Commands 54
- Chapter 4 – Examples 59
- From Power Up 60
- Headset Point-to-Point 60
- Headset Multipoint 60
- Example Client Applications 61
- Description Requires 69
- Appendix B – Responses 72
- Appendix C -- UUID Table 79
- Consumption 80
- Command Responses Comparison 81
- Abbreviations 85
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