ABSTRACT
ARM Cortex-M3 is a company that require high performance (1.25 Dhrystone
MIPS / MHz), low-cost, low-power embedded applications designed specifically for
the kernel. STM32 family benefits from the Cortex-M3 architecture carried out in a
number of improvements, including improved performance at the same time improve
code density Thumb-2 instruction set and greatly improve the interrupt response
tightly coupled nested vectored interrupt controller, All new features are also the
industry's best power levels.
The graduation is CM3-based kernel STM32F103 Series MCU design touch
phone features, SCM control (SIM900) to achieve calling and texting features, texting
support manual input Chinese characters; MCU control VS1053 realize music player
and recording, which music player supports their synchronization, and these two
features together is the Android phone's entertainment applications TOM cat;
OV7670 camera chip control to achieve the camera's functions. Considering more
realistic close to the real phone, add a few common tools of applications such as:
notepad, card reader, calculator, system settings and other auxiliary functions. The
design uses the LCD screen is a TFT LCD with touch-screen operation, these
applications can be opened by double-clicking the application icon. Each application
and task scheduling through UCOS-II real-time operating system scheduler, system
operation and smooth, high stability. Based on the above rich applications can bring
some experience effects!
Since 2008, Google released the first Android phone, the open platform due to
its good rich hardware configuration, the configuration level is higher, systems, and
software development to facilitate and various advantages, Android operating system
has expanded rapidly to become the market share in the world one operating system.
At present mobile phone market, especially popular Android phone's functions month
becomes richer and more powerful, leading the trend of handheld electronic devices.
Android operating system also contributed to the birth of the rapid development of
touch-screen operation control, and now the Android phone's touch-screen operation
momentum of rapid development, so that the phone will not only become a
mainstream communications equipment, have gradually become the mainstream
entertainment device. Graduation design will make full use of the knowledge and
close to the actual demand has a strong practical significance!
Key words：mobile phone;touch operation;music player
