In 2013, wearable devices began to heat up, especially smart watches, which became the scent of various manufacturers, and they all focused on this field. The choice of processor in smart watches is particularly important, because the product positioning made by each manufacturer is different, some are positioned as an independent, and some are positioned as accessories, so let's observe the different processors. . In the selection of the processor of the smart watch, the two major solutions are equally divided: the high frequency MTK platform VS low power MCU platform. Look at the low-power STM 32 platform first. The STM 32 family is based on the ARM Cortex-M3 core specifically designed for embedded applications requiring high performance, low cost, and low power. Divided into two different series by performance: STM32F103 "Enhanced" series and STM32F101 "Basic" series. The enhanced series clock frequency reaches 72MHz, which is the highest performance in its class. The basic clock frequency is 36MHz. It is a 16-bit product with a significantly higher performance than a 16-bit product. It is the best choice for 16-bit users. Both series have built-in 32K to 128K flash memory, the difference being the combination of the maximum capacity of the SRAM and the peripheral interface. When the clock frequency is 72MHz, the code is executed from the flash memory. The STM32 consumes 36mA, which is the lowest power consumption in the 32-bit market, equivalent to 0.5mA/MHz. The smart watch equipped with this processor is represented by Pebble. Users want a watch that seamlessly connects to other devices and runs continuously for a few days without charging, allowing users to enjoy the full benefits of a smart watch without worrying about performance and battery life. The STM32 F2 is the key to achieving all of these possibilities, with a standby time of approximately 7 days. In addition to the 32-bit processing and processing power required for advanced signal processing applications, the STM32 microcontroller architecture provides real-time response, outstanding energy efficiency, highly integrated peripherals and memory to meet the most demanding requirements of embedded applications. Resolve MTK platform processor For powerful solutions, a higher-frequency master platform, such as Samsung's Galaxy Gear, will be used. At the same time, its product positioning also has a communication module that can operate independently of the mobile phone. Generally, this kind of product adopts the Android system, which can realize functions such as dial-up call, short message sending and receiving inquiry, mail sending and receiving viewing, etc., and supports the installation and uninstallation of the APP. Due to the higher frequency, the standby time is usually within 1~3 days. At present, there are many companies in Shenzhen that are engaged in mobile phone solutions are doing similar projects, but there are still few AP vendors supporting this kind of products, so most of them use mobile phone platforms. The smart watch equipped with this processor is currently the latest one. Kaipai "Hua Biao" will choose the mature MTK6577 dual-core solution, the processor main frequency is 1GHz, the screen size is 1.54 inches (iPad mini with suppliers), has 4G high-speed storage space and supports expansion, battery capacity is 500 mAh, Replaceable, Android 4.0 system. Other functions such as WIFI, Bluetooth, GPS, FM, etc., and built-in sports mode, standby time: about 2 days. Small team developer's choice In the Shenzhen Smart Watch Exchange Conference on December 21, 2013, I love the program network to invite the industry's developer Fan Gong to exchange development experience with everyone, including the selection of processors. Xiaobian also has close contact with developers, and the following points in their communication are more critical: Whether the No.1 product is positioned as a stand-alone smart watch or as a mobile phone accessory. For high independence, there is a separate system, and the smart watch with more functions can be equipped with a high-end MTK platform. Conversely, a smart watch that is defined as an accessory, as part of the mobile phone, focuses on practicality, so the STM32 platform can be selected, and the platform consumes less power. No.2 Positioned as practical or fashionable. For the fashionable products, a word "hyun" has high requirements on the configuration of the processor, so the MTK can be selected, and the practical type should be a low-power processor. No.3 considers the customizability of the platform. This is also a relatively special factor considered by the developer Fan Gong. Their smart watch is an open platform with high customizability, so the MTK platform was chosen. Why do the development teams define their products as mobile phone accessories, but use high-power MTK processors? The reasons are as follows: 1 Standing on the shoulders of giants, using MTK's low power consumption and mature UI features; 2 Utilize MTK's mature functional machine industry chain, including support from developers and consumers; 3 secondary development, more optional features, developers are more free; 4 The intelligent system currently has a high power consumption; in addition, the watch screen is too small, and the mobile phone APK is not installed on the watch; It can be said that Fangong's smart watches pay more attention to customizable and secondary development. It is not difficult for developers to develop on the MTK platform. Just master some knowledge of C language and MTK development. Moreover, the MTK platform industry chain is mature, which can provide developers with complete technical support. It is easier to compare development difficulties than STM32. YASKAWA Servo Driver/motor,SGD7S,SGM7,SGMC,SGL YASKAWA Servo,servo motor,SGD7S,SGM7,SGMC,SGL Wuxi Trenty Machinery & Equipment Co., Ltd. , https://www.elec-inverter.com
May 03, 2024