Getting Started with BPI-R4

Development

Basic Development

Prepare to develop

 * Prepare 8G/above TF card, USB-Serial cable, Ubuntu System
 * Using your USB-Serial cable(3.3V TTL,Baud=115200) Connect to debug console on BPI-R4
   G=GND;  RX=BPI-R4 input;  TX=BPI-R4 output
    

 * BPI-R4 bootstrap and device select Jumper Setting
    

  * Examples:

 1. All Jumper is "1", BPI-R4 will boot from SD card
    

 2. SW3-A is "0" and SW3-B is "1" , BPI-R4 will boot from SPI NAND
    

 3. SW3-A is "1" and SW3-B is "0" , BPI-R4 will boot from eMMC
    

 4. If the console said "system halt!", it means that the bootup storage does not cotain any OS

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Accessories

1. 10G SFP Module

The SFP serdes speed of BPI-R4 is fixed at 10Gbps, so only SFP that support this can be used！

Usually the PIN6 of 10G SFP+ module is GND. After inserting the module, SFP_MOD_DEF0 will be pulled low, thereby turning on the SFP power supply.

Therefore, if this PIN of the module is not GND, 3.3V_SFP power will not be supplied!

10G SFP+ Copper Module

The temperature of this module is very high when used for a long time, It can reach 90℃ without a heat sink or cooling fan. Be careful to prevent burns!

Note:

Do not pull out this module once it is inserted, otherwise it will cause BPI-R4 to reboot.This phenomenon does not exist with other modules.

10G SFP+ Fibre Module

2. 4G/5G Module

• BPI-R4 supports 4G LTE EC25. Quectel RM500U-CN & RM520N-GL 5G Modules.
• If you want to use 5G on BPI-R4:

   1. Insert 5G dongle into USB3.0.
   2. Connect RG200U-CN to mini PCIe, connect SoC through USB2.0(speed limited).
   3. Make an RG200U-CN LGA adapter board and insert it into M.2 KEY M.

Note: The availability of 4G/5G depends on the local carrier frequency band.

3. SSD

• please insert one M2.KeyM SSD into M2.KeyM slot.