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EKT-LM3S2965 application field and working principle

The EKT-LM3S2965 is an evaluation board used for prototyping with TI’s Stellaris ARM Cortex-M3 MCU based products, such as the TM4C129 family of microcontrollers. The board contains an assortment of components, including a full complement of on-board peripherals, together with a software package that includes source code examples, example projects, and documentation. It offers a low-cost solution for engineers to explore the ARM architecture.

Application and Features

The EKT-LM3S2965 board is designed for engineers to evaluate the features and capabilities of the Stellaris ARM Cortex-M3 processor, as well as the embedded peripherals associated with the TM4C129 family of microcontrollers. The board works with Code Composer Studio development environment to support development of users’ applications. The board ships with a full complement of on-board components, including: two banks of LEDs, four pushbuttons, a serial port, a 128x32 OLED display, a capacitive touch screen, an on-board microphone and a 3-axis accelerometer.

It incorporates an RS-485 transceiver for communication with other boards. The board also incorporates a built-in power supply, and has an on-board voltage regulator to provide a reliable, constant power source for the microcontroller.

The board includes an on-board JTAG connector, which is compatible with multiple ARM cores and popular development tools. The board also includes a USB connector, which is compatible with a special drivers that is used to connect to the Windows platform computers.

Working Principle

The ARM Cortex-M3 processor on the EKT-LM3S2965 board serves as the main processor, and its memory space is divided into code memory (program memory) and data memory (data memory). The processor uses the instruction set provided by ARM for execution of instructions, and has three main operating modes: privileged mode, system mode and user mode. The privileged mode provides the highest level of access to the processor, while the system and user modes provide reduced access for application tasks.

The processor is connected to an array of on-board peripherals, which provide the functionality required for application development. These peripherals include LEDs, pushbuttons, OLED display, capacitive touch screen, on-board microphone, 3-axis accelerometer, RS-485 transceiver, power supply, voltage regulator and a JTAG connector. The EKT-LM3S2965 board also includes a USB connector and drivers to connect to Windows platform computers.

The EKT-LM3S2965 board is powered by a 3.3V voltage source, and is programmed using an on-board JTAG connector. The processor can be programmed with the Code Composer Studio development environment, and users can create applications using the provided example projects and source code examples.

Conclusion

The EKT-LM3S2965 evaluation board is an excellent tool for engineers who are interested in experimenting with and exploring the features and capabilities of the Stellaris ARM Cortex-M3 processor, as well as the associated embedded peripherals. The board includes an assortment of components, as well as a software package that includes source code examples, example projects, and documentation. With its low cost and easy programmability, the EKT-LM3S2965 board is the perfect solution for testing out applications on the ARM architecture.

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