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Atech OEM Inc. BL4011 User Manual

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Version 1.2
 
Atech OEM Inc. 
7F, AAEON Building, N0.43, Sec. 4, Keelung Rd., Taipei City 10607, Taiwan, R.O.C. 
Tel: 886-2-2377-0282      Fax:886-2-2377-0283     www.atechoem.com/wl     Page.
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5. Software & Operation Mode: Data-Transfer Profile 
The special firmware in BL-4011 supports two different operation modes: Client mode and Server mode. 
This special firmware allows BL-4011 to transfer data through the UART interface, which is similar to the 
SPP profile in Bluetooth v2.1 standard. 
 
BL-4011 with Client-mode firmware can initiate the connecting process between client and server. With 
Server-mode firmware, BL-4011 can advertise its information and wait for the client’s connecting.   
 
AtechOEM also can provide standard GATT-based profiles issued in Bluetooth SIG. We also provide 
customized firmware to our customers to apply to different applications. 
 
5.1. Application Architecture with Client-mode and Server-mode 
Application architecture of BL-4011 with Client and Server mode is showed as below. The Client-mode 
also can be connected by an smart phone based on GATT connection. The data can be transferred through 
an UART interface or an APP on a smart phone.