Page 3of 38 Pages Shenzhen Beilai Technology Co., Ltd V1.0
Embedded ARM Computer BL303 BL304
Table of Contents
1 Introduction................................................................................................................................................ 5
1.1 Overview.............................................................................................................................................5
1.2 Features..............................................................................................................................................5
1.3 Application scenarios........................................................................................................................ 5
1.4 Technical Specifications................................................................................................................... 6
1.5 Model Selection................................................................................................................................. 8
2 System Programming.............................................................................................................................. 9
2.1 Settings............................................................................................................................................... 9
2.2 Programming via TF Card................................................................................................................9
2.3 Programming via OTG....................................................................................................................12
2.3.1 Programming with Linux......................................................................................................... 12
2.3.2 Programming with Windows...................................................................................................12
3 Hardware Specifications........................................................................................................................14
3.1 Power Interface................................................................................................................................14
3.2 LED Indicators................................................................................................................................. 14
3.3 RS485&RS232 Serial Port.............................................................................................................15
3.4 CAN Interface.................................................................................................................................. 16
3.5 PWM Interface................................................................................................................................. 18
3.6 DI........................................................................................................................................................19
3.7 LAN....................................................................................................................................................20
3.8 WiFi Module..................................................................................................................................... 23
3.8.1 STA Mode..................................................................................................................................23
3.8.2 AP Mode .................................................................................................................................... 25
3.9 4G...................................................................................................................................................... 25
3.10 USB Port.........................................................................................................................................28
3.11 Debug..............................................................................................................................................29
3.12 SD Card slot...................................................................................................................................29
3.13 SIM Card Slot................................................................................................................................ 30
3.14 Antenna Interface.......................................................................................................................... 31
