RAYTAC MDBT50Q-DB-ATMS User manual

Version: A
Issued Date: 2020/05/30
User Guide
(簡易使用手冊)
產品名稱 (Product): Demo Board
for MDBT50Q-ATMS / MDBT50Q-PATMS
產品型號 (Model No.): MDBT50Q –DB –ATMS
韌體版本 (FW Revision): 1.0
DEFAULT ROLE IS “PERIPHERAL / SLAVE”

Index
1. Introduction ................................................................................................................... 3
1.1. Contents of the Set............................................................................................... 3
2. Hardware Description ................................................................................................... 4
3. Reference Circuit........................................................................................................... 6
4. AT Command ................................................................................................................. 7
4.1. List of supported commands................................................................................. 7
4.1.1. Central.................................................................................................................. 7
4.1.2. Peripheral............................................................................................................. 8
4.2. AT Command Sets................................................................................................ 9
4.2.1. “Central” Commands ............................................................................................ 9
Central “Write” ...................................................................................................... 9
Central “Read” .................................................................................................... 14
4.2.2. “Peripheral” Commands...................................................................................... 16
Peripheral “Write”................................................................................................ 16
Peripheral “Read” ............................................................................................... 19
4.2.3. Response (Default)............................................................................................. 20
Central................................................................................................................ 20
Peripheral........................................................................................................... 23
4.3. Default Info......................................................................................................... 25
4.3.1. Central................................................................................................................ 25
4.3.2. Peripheral........................................................................................................... 27
5. How to Control External MCU .................................................................................... 28
5.1. How to Send AT Commands............................................................................... 28
5.1.1. UART Mode........................................................................................................ 28
5.1.2. USB Mode.......................................................................................................... 29
5.2. How to Return to Flashed Default Setting........................................................... 30
5.3. Default Definition of Connect/ADV LED Status................................................... 31
5.4. How to Start Scanning........................................................................................ 32
5.5. Throughput Test.................................................................................................. 35
6. Useful Links................................................................................................................. 46
History of Firmware Revision............................................................................................ 47
Release Note....................................................................................................................... 48

1.Introduction
This document shows how to use the demo board (MDBT50Q-DB-ATMS) to test function of
MDBT50Q-ATMS & MDBT50Q-PATMS.
MDBT50Q-DB-ATMS is designed for testing and debugging without building your own board.
The board is only available with MDBT50Q-ATMS (chip antenna) module. MDBT50Q-ATMS
will be pre-programmed with Raytac’s AT command firmware. If you don’t need such
pre-programming and is looking for nRF52833 module, please check MDBT50Q-512KV2 and
MDBT50Q-P512KV2.
Please visit our website for spec sheet of every module mentioned above.
1.1. Contents of the Set
Each set includes MDBT50Q-DB-ATMS x 1 and mini-USB cable x 1.

2.Hardware Description
(1) MDBT50Q-ATMS BLE module based on nRF52833.
(2) 32.768KHz crystal for external LF oscillator .
(3) External MCU control Interface
(4) ADC input for battery detection only. Reference voltage is 0.6V.
Example:
formula: Input Voltage 
  
   
       
(5) UART interface for data bridge or AT commands.

(6) Wake-up(Scan) key.
(7) 3.3V LDO to power up MDBT50Q-ATMS.
(8) LED for status indicator
(9) USB interface for USB Mode
(10) Select USB Mode

3.Reference Circuit

4.AT Command
4.1. List of supported commands
4.1.1.Central
- Hardware selecting of UART or USB interface
- Enable/disable interface of UART hardware for saving power
- Setting of device role as Central or Peripheral
- Setting of scanned device name
- Setting of scanned base UUID / service UUID / TX character / RX character
- Setting of scanned RSSI threshold
- Select data rate of 1 Mbps, 2 Mbps or 125 Kbps on-air
- Select output power in 6 levels.
- Select connection interval mode
- Select UART baud rates / auto baud rates under USB mode
- Select LDO or DC-to-DC power mode
- Select external or internal RC 32.768KHz oscillator
- System reset of software or hardware
- Recover-to-default setting with hardware and software method
- Set scanning/ idle time
- Start or stop scanning
- Set LED pattern indicating scanning, idle or connecting status
- Enable/disable UART flow control
- Power-down mode for power saving and GPIO wake-up
- Support DLE / maximum MTU 247 bytes / data payload up to maximum 244 bytes
- Print out scan list including RSSI, MAC address and device name
- Support direct connection to the device with specific MAC address
- Scan beacon company ID/UUID (support extended advertising beacon)
- Enable/Disable beacon information printed out through USB/UART interface
(support extended advertising beacon)

4.1.2.Peripheral
- Hardware selecting of UART or USB interface
- Enable/disable interface of UART hardware for saving power
- Setting of device role as Central or Peripheral
- Setting of advertising device name
- Setting of base UUID / service UUID / TX character / RX character
- Select data rate of 1 Mbps, 2 Mbps or 125 Kbps on-air
- Select output power in 6 levels.
- Select connection interval mode
- Select UART baud rates / USB mode auto baud rates
- Select LDO or DC-to-DC power mode
- Select external or internal RC 32.768KHz oscillator
- System reset of software or hardware
- Recover-to-default setting with hardware and software method
- Set advertising time
- Setting of advertising interval
- Start or stop advertising
- Set LED pattern indicating advertising or connecting status
- Enable/disable UART flow control
- Power-down mode for power saving and GPIO wake-up
- Set serial number and retrieve
- Set or retrieve MAC Address
- Retrieve ADC value for battery detection, delivering the information through battery
service
- Support DLE / maximum MTU 247 bytes / data payload up to maximum 244 bytes

4.2. AT Command Sets
4.2.1.“Central”Commands
⚫Central “Write”
No.
Command
Description
(1)
AT+CENTRAL
Set device role as Central
(2)
AT+PERIPHERAL
Set device role as Peripheral
(3)
AT+NAME
Set device name, Max. length of 20 characters
e.g. AT+NAME123 (device name 123, 3 characters)
(4)
AT+BASEUUID
uuuuuuuuuuuuuuuu
uuuuuuuuuuuuuuuu
Set base UUID for NUS (Hex),
e.g. 9ECADC240EE5A9E093F3A3B50000406E
13th & 14th byte is reserved for service / TX character
RX character UUID, always be 0000.
(5)
AT+SERVICEUUIDuuuu
Set service UUID for NUS (Hex),
e.g. 0x0001
(6)
AT+TXCHARACTERUUIDuuuu
Set TX character UUID for NUS (Hex),
e.g. 0x0003
(7)
AT+RXCHARACTERUUIDuuuu
Set RX character UUID for NUS (Hex),
e.g. 0x0002
(8)
AT+RSSITHRESHOLDnnn
Set RSSI threshold for scanning all devices (Ascii),
e.g. -90 (min.); -20 (Max.)
(9)
AT+PHYMODE1MBPS
Set PHY mode at 1Mbps
(10)
AT+PHYMODE2MBPS
Set PHY mode at 2Mbps
(11)
AT+PHYMODE125KBPS
Set PHY mode at 125Kbps
(12)
AT+TXPOWER8DBM
Set RF TX power at + 8dBm
(13)
AT+TXPOWER4DBM
Set RF TX power at + 4dBm
(14)
AT+TXPOWER0DBM
Set RF TX power at 0dBm
(15)
AT+TXPOWER-4DBM
Set RF TX power at - 4dBm
(16)
AT+TXPOWER-8DBM
Set RF TX power to - 8dBm
(17)
AT+TXPOWER-20DBM
Set RF TX power at - 20dBm

No.
Command
Description
(18)
AT+CONNECTINTERVALMODE0
Set connection interval mode for Peripheral 20ms/40ms
usage (min. 20ms / Max. 40ms),
(19)
AT+CONNECTINTERVALMODE1
Set connection interval mode for Peripheral 8ms/8ms
usage (min. 8ms / Max. 8ms)
(20)
AT+CONNECTINTERVALMODE2
Set connection interval mode for Peripheral usage
(programmable: min. / Max. range is 8 ms ~ 1,000 ms)
(21)
AT+CONNECTINTERVALTIMEnnnnffff
Set the range of connection interval for Mode 2,
e.g. nnnn= min. time / 0x0008 (Min. 8ms)
f f f f = Max. time / 0x03E8 (Max. 1,000ms)
“min. time ≤ connection interval ≤ Max. time
(22)
AT+BAUDRATE9600
Set UART baud rate at 9600 bps,n,8,1
(23)
AT+BAUDRATE19200
Set UART baud rate at 19200 bps,n,8,1
(24)
AT+BAUDRATE38400
Set UART baud rate at 38400 bps,n,8,1
(25)
AT+BAUDRATE57600
Set UART baud rate at 57600 bps,n,8,1
(26)
AT+BAUDRATE115200
Set UART baud rate at 115200 bps,n,8,1
(27)
AT+BAUDRATE230400
Set UART baud rate at 230400 bps,n,8,1
(28)
AT+BAUDRATE460800
Set UART baud rate at 460800 bps,n,8,1
(29)
AT+BAUDRATE921600
Set UART baud rate at 921600 bps,n,8,1
(30)
AT+DCDCDIS
Disable DC to DC converter (LDO mode)
(31)
AT+DCDCEN
Enable DC to DC converter (DC-to-DC mode)
(32)
AT+XTALINTERNAL
Use internal RC 32.768 KHZ oscillator
(33)
AT+XTALEXTERNAL
Use external crystal 32.768 KHZ oscillator
(34)
AT+RESET
Set to reset system
(35)
AT+SCANOLDTIMEtttt
Set time of scanning of paired device (Hex)
e.g. 0x001E (min. 30secs),
0x0258 (Max. 600secs)
0x0000 (forever)
(36)
AT+SCANNEWTIMEtttt
Set time of scanning ALL devices (Hex)
e.g. 0x001E (min. 30secs),
0x0258 (Max. 600secs)
0x0000 (forever)

No.
Command
Description
(37)
AT+IDLETIMEtttt
Set idle time (Hex)
e.g. 0x001E (min. 30secs),
0x0258 (Max. 600secs)
0x0000 (forever)
(38)
AT+SCANOLDSTART
Set to start scanning paired device
(39)
AT+SCANNEWSTART
Set to start scanning ALL devices
(40)
AT+SCANSTOP
Set to stop scanning
(41)
AT+DISCONNECT
Terminate the connection
(42)
AT+IDLEPATTERNnnnnffff
Set LED idle pattern (Hex), where
n = time when LED on, f = time when LED off
e.g. 0x0064 (min. 100ms)
0x1388 (Max. 5,000ms)
0x00000000 (off)
0xFFFFFFFF (on)
(43)
AT+CONNECTPATTERNnnnnffff
Set LED connecting pattern (Hex), where
n = time when LED on, f = time when LED off
e.g. 0x0064 (min. 100ms)
0x1388 (Max. 5,000ms)
0x00000000 (off)
0xFFFFFFFF (on)
(44)
AT+SCANOLDPATTERNnnnnffff
Set LED pattern for scanning paired device (Hex), where
n = time when LED on, f = time when LED off
e.g. 0x0064 (min. 100ms)
0x1388 (Max. 5000ms)
0x00000000 (off)
0xFFFFFFFF (on)
(45)
AT+SCANNEWPATTERNnnnnffff
Set LED pattern for scanning all devise (Hex), where
n = time when LED on, f = time when LED off
e.g. 0x0064 (min. 100ms)
0x1388 (Max. 5000ms)
0x00000000 (off)
0xFFFFFFFF (on)

No.
Command
Description
(46)
AT+FLOWCONTROLDIS
Disable UART flow control
(47)
AT+FLOWCONTROLEN
Enable UART flow control
(48)
AT+CONNECTINDICATORLOW
Set logic low output when connecting BT
(49)
AT+CONNECTINDICATORHIGH
Set logic high output when connecting BT
(50)
AT+WAKEUPLOW
Set logic low at wake-up when in deep sleep
(51)
AT+WAKEUPHIGH
Set logic high at wake-up when in deep sleep
(52)
AT+SLEEP
Set to get into deep sleep mode
(53)
AT+SERIALNOnnnnnnnn
Set serial number
e.g. AB000001, fixed 8-character length
(54)
AT+RESPONSEDIS
Disable response when sending “write” command
(55)
AT+RESPONSEEN
Enable response when sending “write” command
(56)
AT+DEFAULT
Back to default
(57)
AT+SCANLIST
Set to output the list of all devices which meet the setting of
base UUID. Output information in sequence includes:
(1) RSSI (2) MAC address (3) device name
e.g. -40, AABBCCDDEEFF, Raytac AT-UART (ASCII)
stands for
(1) RSSI: -40dBm
(2) MAC address: AABBCCDDEEFF
(3) device name: Raytac AT-UART
Note: Use “AT+SCANSTOP” to stop scanning
(see command (40)).
(58)
AT+SCANNEWMACnnnnnnnnnnnn
Set to directly connect to the device with specific MAC
address, where nnnnnnnnnnnn is 12 bytes high byte to low
byte ASCII code MAC address.
e.g. AT+CONNECTMACAABBCCDDEEFF (ASCII)
Note: This command is like “AT+SCANNEWSTART”
command, but only scans the device with specified
MAC address. Setting of scanning time is the same
as “AT+SCANNEWTIMEtttt” command.

No.
Command
Description
(59)
AT+COMPANYIDdddd
Set company ID for beacon (Hex),
e.g. 0x004C (for Apple ID)
(60)
AT+BEACONUUID
uuuuuuuuuuuuuuuu
uuuuuuuuuuuuuuuu
Set UUID for beacon (Hex),
e.g. 0112233445566778899AABBCCDDEEFF0
(61)
AT+BEACONINFOEN
Enable scanning beacon data
When AT+BEACONINFOEN is set, the device become a
BEACON SCANNER only. If you want to exchange data,
please set “AT+BEACONINFODIS”.
(62)
AT+BEACONINFODIS
Disable scanning beacon data
(63)
AT+COMMANDEN
Switch to command mode when BLE is connected
(USB communication mode only)
(64)
AT+COMMANDDIS
Switch to transmission mode when BLE is connected
(USB communication mode only)
(65)
AT+BOOTLOADER
For Raytac Test only

⚫Central “Read”
No.
Command
Description
(1)
AT?ROLE
To retrieve device role
(2)
AT?NAME
To retrieve scanned device name
(3)
AT?BASEUUID
To retrieve base UUID value (Hex)
(4)
AT?SERVICEUUID
To retrieve service UUID value (Hex)
(5)
AT?TXCHARACTERUUID
To retrieve TX character UUID value (Hex)
(6)
AT?RXCHARACTERUUID
To retrieve RX character UUID value (Hex)
(7)
AT?RSSITHRESHOLD
To retrieve scanning new RSSI threshold value (Ascii)
(8)
AT?CONNECTRSSI
To retrieve RSSI value when in BLE connection (Ascii)
(9)
AT?PHYMODE
To retrieve status of PHY mode
(10)
AT?TXPOWER
To retrieve RF TX power
(11)
AT?CONNECTINTERVALMODE
To retrieve status of connection interval mode
(12)
AT?CONNECTINTERVALTIME
To retrieve value of connection interval time under Mode 2
(13)
AT?BAUDRATE
To retrieve current UART baud rate
(14)
AT?DCDC
To retrieve DC to DC converter status
(15)
AT?XTAL
To retrieve status of 32.768KHz oscillator
(16)
AT?IDLETIME
To retrieve idle time (Hex)
(17)
AT?SCANOLDTIME
To retrieve time of scanning paired device (Hex)
(18)
AT?SCANNEWTIME
To retrieve time of scanning all devices (Hex)
(19)
AT?IDLEPATTERN
To retrieve LED idle pattern (Hex)
(20)
AT?CONNECTPATTERN
To retrieve LED connecting pattern (Hex)
(21)
AT?SCANOLDPATTERN
To retrieve LED pattern when scanning paired device (Hex)
(22)
AT?SCANNEWPATTERN
To retrieve LED pattern when scanning all devices (Hex)
(23)
AT?FLOWCONTROL
To retrieve UART status of flow control
(24)
AT?WAKEUP
To retrieve logic of wake-up pin
(25)
AT?CONNECTINDICATOR
To retrieve logic of pin for BT-connecting indicator
(26)
AT?SERIALNO
To retrieve serial number
(27)
AT?MACADDR
To retrieve IC MAC address
(28)
AT?ADCVALUE
To retrieve 10bit ADC value

No.
Command
Description
(29)
AT?RESPONSE
To retrieve status of response
(30)
AT?VERSION
To retrieve firmware version
(31)
AT?COMPANYID
To retrieve company ID value (Hex)
(32)
AT?BEACONUUID
To retrieve beacon UUID value (Hex)
(33)
AT?BEACONINFO
To retrieve beacon information
(34)
AT?ALLPARAMETERS
To retrieve value of all parameters

4.2.2.“Peripheral” Commands
⚫Peripheral “Write”
No.
Command
Description
(1)
AT+CENTRAL
Set device role to central
(2)
AT+PERIPHERAL
Set device role to peripheral
(3)
AT+NAME
Set device name. Max. length of 20 characters
e.g. AT+NAME123 (device name 123, 3 characters)
(4)
AT+BASEUUID
uuuuuuuuuuuuuuuu
uuuuuuuuuuuuuuuu
Set base UUID for NUS (Hex),
e.g. 9ECADC240EE5A9E093F3A3B50000406E
13th & 14th byte is reserved for service / TX character
RX character UUID, always be 0000.
(5)
AT+SERVICEUUIDuuuu
Set service UUID for NUS (Hex),
e.g. 0x0001
(6)
AT+TXCHARACTERUUIDuuuu
Set TX character UUID for NUS (Hex),
e.g. 0x0003
(7)
AT+RXCHARACTERUUIDuuuu
Set RX character UUID for NUS (Hex),
e.g. 0x0002
(8)
AT+PHYMODE2MBPS
Set PHY mode at 2Mbps
(9)
AT+PHYMODE1MBPS
Set PHY mode at 1Mbps
(10)
AT+PHYMODE125KBPS
Set PHY mode at 125Kbps
(11)
AT+TXPOWER8DBM
Set RF TX power at + 8dBm
(12)
AT+TXPOWER4DBM
Set RF TX power at + 4dBm
(13)
AT+TXPOWER0DBM
Set RF TX power at 0dBm
(14)
AT+TXPOWER-4DBM
Set RF TX power at –4dBm
(15)
AT+TXPOWER-8DBM
Set RF TX power at –8dBm
(16)
AT+TXPOWER-20DBM
Set RF TX power to –20dBm

No.
Command
Description
(17)
AT+CONNECTINTERVALMODE0
Set connection interval mode for Peripheral 20ms/40ms
usage (min. 20ms / Max. 40ms),
(18)
AT+CONNECTINTERVALMODE1
Set connection interval mode for Peripheral 8ms/8ms
usage (min. 8ms / Max. 8ms)
(19)
AT+CONNECTINTERVALMODE2
Set connection interval mode for Peripheral usage
(programmable: min. / Max. range is 8 ms ~ 1,000 ms)
(20)
AT+CONNECTINTERVALTIMEnnnnffff
Set the range of connection interval for Mode 2,
e.g. nnnn= min. time / 0x0008 (Min. 8ms)
f f f f = Max. time / 0x03E8 (Max. 1,000ms)
“min. time ≤ connection interval ≤ Max. time
(21)
AT+BAUDRATE9600
Set UART baud rate at 9600 bps,n,8,1
(22)
AT+BAUDRATE19200
Set UART baud rate at 19200 bps,n,8,1
(23)
AT+BAUDRATE38400
Set UART baud rate at 38400 bps,n,8,1
(24)
AT+BAUDRATE57600
Set UART baud rate at 57600 bps,n,8,1
(25)
AT+BAUDRATE115200
Set UART baud rate at 115200 bps,n,8,1
(26)
AT+BAUDRATE230400
Set UART baud rate at 230400 bps,n,8,1
(27)
AT+BAUDRATE460800
Set UART baud rate at 460800 bps,n,8,1
(28)
AT+BAUDRATE921600
Set UART baud rate at 921600 bps,n,8,1
(29)
AT+DCDCDIS
Disable DC to DC converter (LDO mode)
(30)
AT+DCDCEN
Enable DC to DC converter (DC-to-DC mode)
(31)
AT+XTALINTERNAL
Use internal RC 32.768 KHZ oscillator
(32)
AT+XTALEXTERNAL
Use external crystal 32.768 KHZ oscillator
(33)
AT+RESET
Set to reset system
(34)
AT+ADVTIMEtttt
Set advertising time (HEX)
e.g. 0x001E(min. 30secs)
0x0E10(Max. 3600secs)
0x0000(forever)
(35)
AT+ADVINTERVALTIMEnnnn
Set advertising interval (Hex), in units of 0.625 ms.
e.g. 0x0040(min. 40ms)
0x1900(Max. 4,000ms)
(36)
AT+ADVSTART
Set to start advertising
(37)
AT+ADVSTOP
Set to stop advertising

No.
Command
Description
(38)
AT+DISCONNECT
Terminate the connection
(39)
AT+ADVPATTERNnnnnffff
Set LED advertising pattern (Hex), where
N = time when LED on, f = time when LED off
e.g. 0x0064 (min. 100ms);
0x1388 (Max. 5000ms),
0x00000000 (off)
0xFFFFFFFF (on)
(40)
AT+CONNECTPATTERNnnnnffff
Set LED connecting pattern (Hex), where
n = time when LED on, f = time when LED off
e.g. 0x0064 (min. 100ms)
0x1388 (Max. 5,000ms)
0x00000000 (off)
0xFFFFFFFF (on)
(41)
AT+FLOWCONTROLDIS
Disable UART flow control
(42)
AT+FLOWCONTROLEN
Enable UART flow control
(43)
AT+CONNECTINDICATORLOW
Set logic low output when connecting BT
(44)
AT+CONNECTINDICATORHIGH
Set logic high output when connecting BT
(45)
AT+WAKEUPLOW
Set logic low at wake-up when in deep sleep
(46)
AT+WAKEUPHIGH
Set logic high at wake-up when in deep sleep
(47)
AT+SLEEP
Set to get into deep sleep mode
(48)
AT+SERIALNOnnnnnnnn
Set serial number
e.g. AB000001, fixed 8-character length
(49)
AT+MACADDRnnnnnnnnnnnn
Set IC MAC address, where n is Hes.
Written order is from MSB byte to LSB byte.
(50)
AT+RESPONSEDIS
Disable response when sending “write” command
(51)
AT+RESPONSEEN
Enable response when sending “write” command
(52)
AT+DEFAULT
Back to default setting
(53)
AT+COMMANDEN
Switch to command mode when BLE is connected
(USB communication mode only)
(54)
AT+COMMANDDIS
Switch to transmission mode when BLE is connected
(USB communication mode only)
(55)
AT+BOOTLOADER
For Raytac Test only

⚫Peripheral “Read”
No.
Command
Description
(1)
AT?ROLE
To retrieve device role
(2)
AT?NAME
To retrieve scanned device name
(3)
AT?BASEUUID
To retrieve base UUID value (Hex)
(4)
AT?SERVICEUUID
To retrieve service UUID value (Hex)
(5)
AT?TXCHARACTERUUID
To retrieve TX character UUID value (Hex)
(6)
AT?RXCHARACTERUUID
To retrieve RX character UUID value (Hex)
(7)
AT?PHYMODE
To retrieve status of PHY mode
(8)
AT?TXPOWER
To retrieve RF TX power
(9)
AT?CONNECTINTERVALMODE
To retrieve status of connection interval mode
(10)
AT?CONNECTINTERVALTIME
To retrieve value of connection interval time under Mode 2
(11)
AT?BAUDRATE
To retrieve current UART baud rate
(12)
AT?DCDC
To retrieve DC to DC converter status
(13)
AT?XTAL
To retrieve status of 32.768 KHZ oscillator
(14)
AT?ADVTIME
To retrieve advertising time (Hex)
(15)
AT?ADVINTERVALTIME
To retrieve advertising interval time setting.
(16)
AT?ADVPATTERN
To retrieve LED advertising pattern (Hex)
(17)
AT?CONNECTPATTERN
To retrieve LED connecting pattern (Hex)
(18)
AT?FLOWCONTROL
To retrieve UART status of flow control
(19)
AT?WAKEUP
To retrieve logic of wake-up pin
(20)
AT?CONNECTINDICATOR
To retrieve logic of pin for BT-connecting indicator
(21)
AT?SERIALNO
To retrieve serial number
(22)
AT?MACADDR
To retrieve IC MAC address
(23)
AT?ADCVALUE
To retrieve 10bit ADC value
(24)
AT?CONNECTRSSI
To retrieve RSSI value when in BLE connection (Ascii)
(25)
AT?RESPONSE
To retrieve status of response
(26)
AT?VERSION
To retrieve firmware version
(27)
AT?ALLPARAMETERS
To retrieve value of all parameters

4.2.3.Response (Default)
⚫Central
No.
Command
Response
(1)
AT?ROLE
central
(2)
AT?NAME
MDBT50Q-ATMS (default)
(3)
AT?BASEUUID
9ECADC240EE5A9E093F3A3B50000406E
(default: Hex, uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu:
0x9ECADC240EE5A9E093F3A3B50000406E)
(4)
AT?SERVICEUUID
0001 (default: Hex, uuuu: 0x0001)
(5)
AT?TXCHARACTERUUID
0003 (default: Hex, uuuu: 0x0003)
(6)
AT?RXCHARACTERUUID
0002 (default: Hex, uuuu: 0x0002)
(7)
AT?RSSITHRESHOLD
-51 (default: Ascii, nnn: -51)
(8)
AT?CONNECTRSSI
-30 (dBm, value varies from RSSI)
(9)
AT?PHYMODE
0 PHY mode 1Mbps (default)
(0 = 1Mbps; 1 = 2Mbps; 2 = 125Kbps)
(10)
AT?TXPOWER
5 txpower 8dbm (default)
(0 = 4dBm; 1 = 0dBm; 2 = -4dBm; 3 = -8dBm, 4 = -20dBm,
5 = 8dBm)
(11)
AT?CONNECTINTERVALMODE
0 connect interval mode 0 (default)
(0 = fixed connection interval for iOS/Android usage
1 = fixed connection interval for Central usage
2 = programmable connection interval for iOS/Android APP
usage)
(12)
AT?CONNECTINTERVALTIME
01900190 (default: Hex, 400ms min. connection interval /
400ms Max. connection interval, tttttttt: 0x01900190)
(13)
AT?BAUDRATE
0 baudrate9600 (default)
(0 = 9600; 1 = 19200; 2 = 38400; 3 = 57600; 4 = 115200;
5 = 230400; 6 = 460800; 7 = 1000000;
(14)
AT?DCDC
0 dcdc dis(default)
(0 = disabled; 1 = enabled)
(15)
AT?XTAL
0 xtal internal (default)
(0 = internal; 1 = external, and XTAL = 32.768KHz oscillator)