As we know, the Bluetooth module is divided into two types: بلوتوث کلاسیک (BR/EDR) و انرژی کم بلوتوث (خون). There are many profiles of Classic Bluetooth and BLE: قصبها, گات, A2DP, رفیق, HFP, OTC. For data transmission, SPP and GATT are the most frequently used Classic Bluetooth and BLE profiles respectively.

What’s SPP profile?

قصبها (Serial Port Profile) is a Classic Bluetooth profile, SPP defines the requirements for Bluetooth devices necessary for setting up emulated serial cable connections using RFCOMM between two peer devices. The requirements are expressed in terms of services provided to applications, and by defining the features and procedures that are required for interoperability between Bluetooth devices.

What’s GATT profile?

گات (Generic Attribute profile is a BLE profile, it defines specifications for two BLE devices to communicate through Service and Characteristic, the two parties of GATT communication are Client/Server relationship, Peripheral is GATT Server, Central is the GATT Client, all the communications, both are initiated by Client, and receive the response from Server.

SPP+GATT combo

SPP and GATT are playing the role of transmitting data, we should notice that when using the Bluetooth module for communicating with the mobile app, for iOS smartphone, the BLE (گات) is the only supported two-way data transmission profile that is free to use, for Android smartphone, it supports both SPP and GATT, so how important is a module supports both SPP and GATT.

When a Bluetooth module supports both SPP & گات, it means that it’s a Bluetooth dual-mode module. Any recommended Bluetooth duial-mode modules?

These two modules are not very suitable for your application? Don’t hesitate to contact Feasycom now!

محصولات مرتبط

FSC-BT836B

بلوتوث 5 راه حل با سرعت بالا ماژول دو حالت

FSC-BT836B is a Bluetooth 5.0 dual-mode module, the most feature is high data rate, in SPP mode, the data is up to 85KB/s, while in GATT mode, the data rate is up to 75KB/s (When do test with an iPhone X).

Main Features

● Fully qualified Bluetooth 5.0 حالت دوگانه.
● Postage stamp sized: 13*26.9 *2مگنی.
● Class 1.5 حمایت(high output power).
● Profiles support: قصبها, مخفی کردن, گات, به, شکاف.
● The default UART Baud rate is 115.2Kbps and can support from 1200bps up to 921.6Kbps.
● UART, I2C ,رابط های سخت افزار USB.
● Supports the OTA upgrade.
● BQB, FCC, در نظر گرفتن, kC,TELEC Certified.

FSC-BT909

Long Range Bluetooth Module Dual-Mode

FSC-BT909 is a Bluetooth 4.2 dual-mode module, which is a Class 1 ماژول, the transmit range can reach up to 500 meters when adding with external antenna.

These two modules are not very suitable for your application? Don’t hesitate to contact Feasycom now!

Main Features

● Fully qualified Bluetooth 4.2/4.1/4.0/3.0/2.1/2.0/1.2/1.1
● Postage stamp sized: 13*26.9 *2.4مگنی
● Class 1 حمایت(Power up to +18.5dBm).
● Integrated ceramic antenna or external antenna(اختیاری).
● The default UART Baud rate is 115.2Kbps and can support from 1200bps up to 921Kbps.
● UART, I2C, PCM/I2S, حصار, USB interfaces.
● Profiles including A2DP, رفیق, HFP/HSP, قصبها, گات
● USB 2.0 full-speed device/host/OTG controller.