User's Manual

HF-A21-SMT Embedded WiFi Module User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
www.hi-flying.com
3
TABLE OF CONTENTS
1. PRODUCT OVERVIEW ............................................................................................................... 9
1.1. General Specification ............................................................................................................. 9
1.2. Hardware Introduction .......................................................................................................... 10
1.2.1. Pins Definition .................................................................................................................. 10
1.2.2. Mechanical Size ............................................................................................................... 12
1.2.3. On-board Chip Antenna ................................................................................................... 12
1.2.4. Evaluation Kit ................................................................................................................... 14
1.2.5. Order Information ............................................................................................................. 15
1.3. Hardware Reference Design ................................................................................................ 15
1.3.1. Hardware Typical Application .......................................................................................... 15
1.3.2. 10/100M Ethernet Interface ............................................................................................. 16
1.3.2.1. Ethernet Connection with Transformer ........................................................................ 16
1.3.2.2. Ethernet Connection without Transformer ................................................................... 16
1.3.3. UART Interface ................................................................................................................ 17
1.3.4. Power Interface ................................................................................................................ 17
1.4. Software Reference Design.................................................................................................. 18
1.4.1. Transparent Transmission Mode ..................................................................................... 18
1.4.2. Configuration Mode .......................................................................................................... 18
1.4.3. Multi-TCP Link Connection .............................................................................................. 19
1.4.4. TCPB Function ................................................................................................................. 19
1.4.5. Palmodic Signal ............................................................................................................... 19
2. FUNCTIONAL DESCRIPTION ................................................................................................. 21
2.1. Wireless Networking ............................................................................................................. 21
2.1.1. Basic Wireless Network Based On AP (Infrastructure) ................................................... 21
2.1.2. Wireless Network Based On AP Network ........................................................................ 21
2.1.3. Wireless Network Based On AP+STA ............................................................................. 22
2.2. Auto- Frequency Function ................................................................................................... 23
2.3. Security .................................................................................................................................. 23
2.4. UART Frame Scheme ............................................................................................................ 23
2.4.1. UART Free-Frame ........................................................................................................... 23
2.4.2. UART Auto-Frame ........................................................................................................... 24
2.5. Address Binding ................................................................................................................... 24
2.6. Ethernet Interface Communication ..................................................................................... 24
2.6.1. HF-A21-SMT Ethernet Interface Networking (As AP) ..................................................... 24
2.6.2. HF-A21-SMT Ethernet Interface Networking (As STA, N-Ver) ........................................ 25
2.6.3. HF-A21-SMT Ethernet Interface Networking (As STA, Z-Ver) ........................................ 25
2.7. Search Function for STA ...................................................................................................... 25
2.8. Work Mode ............................................................................................................................. 25
2.9. Network Protocol .................................................................................................................. 26
2.10. Parameters Configuration ................................................................................................ 26
2.11. Firmware Upgrade ............................................................................................................. 27
3. OPERATION GUIDELINE ......................................................................................................... 28
3.1. Configuration via Web Accessing ....................................................................................... 28
3.1.1. Open Web Management Interface ................................................................................... 28