CONTENT
1. BRIEF INTRODUCTION...................................................................................................... 3
2. PIN DEFINITION.................................................................................................................. 4
3. TYPICAL APPLICATION CIRCUIT.................................................................................... 6
4. BASIC FUNCTIONAL DESCRIPTION............................................................................... 6
4.1.TWO WORKING STATES OF THE MODULE.......................................................... 6
4.2.FUNCTION KEYS AND STATUS INDICATORS..................................................... 7
4.2.1.STATE OUTPUT PIN......................................................................................7
4.2.2. FUNCTION KEY INPUT PIN........................................................................7
4.3. SWITCHING BETWEEN TRANSMISSION AND AT COMMAND MODE........... 8
4.3.1.SWITCH FROM TRANSMISSION TO AT INSTRUCTION MODE.............. 8
4.3.2.FROM AT INSTRUCTION MODE TO TRANSMISSION MODE................. 8
5.2.AT COMMAND LIST AND FUNCTIONAL DESCRIPTION..................................10
6. BLUETOOTH CONNECTION METHOD..........................................................................11
7. TEST TOOLS AND METHODS..........................................................................................12
7.1.TEST BOARD.............................................................................................................12
7.2.TRANSMISSION TEST METHOD........................................................................... 13
7.3.
DATA TRANSMISSION TEST BETWEEN SERIAL PORT AND MOBILE APP
........13
8.
REVISED RECORD
..............................................................................................................16
9.
TECHNICAL SUPPORT AND CONTACT INFORMATION
................................................ 16
