EDBT6

Hardware

Features

• Support BLE 5.0 and classic SPP BT 2.1 version
• Only suitable for data transmission situation
• Only slave mode
• Tranmission 10-15 meter
• Uart buffer 1K bytes, rate 115200

Power supply

• 2.2-3.4V, recommanded to use 3.3V
• Support coil cell battery, or 2x 1.5V AA battery
• Boot instant current 20mA, and then enter into broadcasting and wakeup alternate mode
• standby & connected-mode current 4mA
• Low-power boardcasting mode 20uA
• Boardcasting for 100ms, and enter into sleep mode 400ms, total cycle is 500ms

Mode

• AT commands works only when non-connect status
• Enter into data transmission mode when in connected mode

LED status

• Output 1 second high TTL when boot
• constant high when in connected mode

Pin Definion

• LED: output boot or connection status
• GND
• RXD (R): Serial UART RXD
• TXD (T): Serial UART TXD
• 3V3: Power supply 2.2-3.4V

Commands

AT commands list

• AT+CT set baud rate
• AT+CZ Chip reset Chip soft reset
• AT+CW chip reset to factory settings
• AT+CL chip low power consumption setting

• AT+BS Set BLE connection password This function is not implemented
• AT+QT query the baud rate of the system
• AT+QL query the low power consumption status of the system

• AT+TS Query BLE Bluetooth connection password Reserved

• AT+BM set BLE Bluetooth name
• AT+BN set BLE MAC address
• AT+TM query BLE Bluetooth name
• AT+TN query BLE Bluetooth address

• AT+BD set SPP Bluetooth name
• AT+TD Query SPP Bluetooth name

AT commands examples

Set baud rate

• AT+CT01\r\n Baud rate 9600
• AT+CT02\r\n Baud rate 19200
• AT+CT03\r\n Baud rate 38400
• AT+CT04\r\n Baud rate 57600
• AT+CT05\r\n Baud rate 115200
• AT+CT06\r\n Baud rate 256000

Set BLE, phone and SPP name

• AT+BMBLE-1234\r\n set the Bluetooth name to "BLE-1234"
• AT+BN112233445566\r\n Set the address of BLE. The address displayed on the mobile phone is: 66 55 44 33 22 11
• AT+BDSPP-1234\r\n set the Bluetooth name to "SPP-1234"

query the names

• AT+TM\r\n returns TM+1234\r\n, the Bluetooth name is 1234
• AT+TN\r\n returns TN+12345678AABB\r\n BLE Bluetooth address: 0xBB, 0xAA, 0x78, 0x56, 0x34, 0x12
• AT+TD\r\n returns TD+SPP1234\r\n, the Bluetooth name is SPP1234

enter into low-power broadcasting mode

• AT+CL00\r\n does not enter low power consumption mode. It will be effective next time it is powered on. Pay attention to power on again after setting
• AT+CL01\r\n enter low power consumption mode. It will be effective next power-on. Pay attention to power on again after setting

enable or disable BLE SPP function

• AT+B401\r\n enable BLE function. Of course AT+B400\r\n is closed
• AT+B500\r\n Turn off the SPP function. Of course AT+B501\r\n is turned on
• AT+T4\r\n Query whether the BLE function is enabled. The chip will return T4+01 or T4+00
• AT+T5\r\n Query whether the SPP function is enabled. The chip will return T5+01 or T5+00

Low Power Mode

• AT+CL00\r\n = not enter into low power mode
• AT+CL01\r\n = enter into low power mode

BLE Function

Currently supports BLE pure digital transmission, and the chip can realize transparent transmission. At present, both BLE and SPP can only be used as slaves. That is, the "SERVER" side.

Please note that once the Bluetooth is connected, the chip automatically enters the transparent transmission mode. No longer recognize AT commands. Be sure to search in the app

• 1. The main UUID is "FFF0"
• 2. The UUID of feature 1 is "FFF1", and the feature is "WRITE" and "NOTIFY"
• 3. The UUID of feature 2 is "FFF2", and the feature is "READ" and "NOTIFY"
• 4. The UUID of feature 3 is "FFF3", and the feature is "WRITE"

Quick Start Guide

• Setup baud rate 115200, simple print data to serial
• Voltage supply must use 3.3V or similar, otherwise it will burn
• Default module name KT6368 XXXXXX ...
• Data communication at 0xFFF0 -> 0xFFF1

• demo video please see here