Bluetooth design related issues wireless earbuds maker

1. Q: What is Bluetooth communication?
A: Bluetooth communication was originally designed to facilitate low-cost, low-power wireless communication connections between mobile phones (mobile phones) and accessories. Now it has become the IEEE802.15 standard and is supported by tens of thousands of manufacturers around the world . www.bjbjaudio.com 

2. Q: Is there any future if I engage in Bluetooth development?
A: Strictly speaking, this is not a technical issue, but a worldview issue. What is the future? If it's just money, it's impossible to get rich in technology (note that Bill Gates is a technology businessman); if you want to improve the world with what you can, it's possible, after all, Bluetooth
The main use is civil. Incidentally, thinking about making money and changing the world is the main difference between Chinese and Western worldviews.www.bjbjaudio.com

3. Q: What are the advantages of Bluetooth?
Answer: The first is low power consumption. Taking BLE 4.0 as an example, a button battery can support one year in a static working state; the second is low cost, TI's CC2540 Bluetooth SOC solution chip is sold for only $1, which can make People use bluetooth technology cheaply; again it's openness,
The 2.4GHz frequency band is open to the world and has no government regulation. Finally, it is suitable for the trend of the times. Now is the era of mobile phones, and Bluetooth technology was originally born for it.www.bjbjaudio.com

4. Q: What is the Bluetooth 4.0 protocol and BLE?
Answer: Bluetooth 4.0 protocol is the latest standard released by SIG (Special Interest Group) in June 2010. It has 2 modes: BLE (Bluetooth low energy) can only communicate with 4.0 protocol devices, adapt to energy saving and only send and receive a small amount of data. Equipment (such as home electronics); BR/EDR (Basic Rate / Enhanced Data Rate), backward compatible (can communicate with 3.0/2.1/2.0), suitable for devices that send and receive more data (such as headphones).www.bjbjaudio.com

5. Q: What mobile devices currently support Bluetooth 4.0?
A: Apple's iPhone 4S, iPhone 5, miniPad and iPad 3; Xiaomi Phone 2; Samsung's Galaxy SIII and Note II; HTC ONE series.www.bjbjaudio.com

6. Q: How to start the development of Bluetooth 4.0?
A: Generally speaking, prepare for at least the following three aspects. In terms of hardware, you need to purchase TI's Bluetooth mini kit, including Bluetooth USB dongle, KeyFob and CC Debugger fax; in terms of software, install IAR for 8051, TI's BTool software; technical knowledge
Knowledge, "CC2540/41 BLE Software Developer's Guide 1.3" and "CC2540/41 User's Guide".www.bjbjaudio.com

7. Q: How can I get started quickly when I just started using Bluetooth?
Answer: It is a better way to learn from theory and practice. It is recommended to study "CC2540/41 BLE Software Developer's Guide 1.3" first, then import the SimpleBLEPerepheral project into IAR for 8051, and combine the electronic dog and BTool to debug the broadcast/connection/ bind/access. Reading without hands is empty; without reading, hands-on is shallow.www.bjbjaudio.com

8. Q: When IAR debugs CC2540, is the program imported into the flash of the chip?
Answer: Indeed. CC2540 is a SOC (System On Chip) chip, its core is 8051, it needs to fetch instructions from ROM and data from RAM to run. During simulation, CC Debugger will import the program into the chip Flash, and then execute the simulation.www.bjbjaudio.com