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// Same application can be used to demonstrate TI-RTOS demo with a small change // in CCS project proerties: // a. add ti_rtos_config in workspace and add as dependencies in // project setting Build->Dependecies->add // b. Define USE_TIRTOS in Properties->Build->Advanced Options-> // Predefined Symbols instead of USE_FREERTOS // c. add ti_rtos.a in linker files search option
使用FreeRTOS的简介如下：
Overview FreeRTOS is an opensource RealTime Operating system. Its implements only a very minimalist set of functions: very basic handle of tasks and memory management, and nothing is provided for network communication, drivers for external hardware, or access to a filesystem. However, among its features are the following characteristics: 1. Preemptive tasks 2. Small footprint 3. Written in C and compiled with various C compiler 4. Unlimited number of tasks can run at the same time 5. Implements queues, binary and counting semaphores and mutexes. 6. Inter Task communication is accomplished using queues. Application details The objective of this application is to showcasing the FreeRTOS feature like Multiple task creation, Inter task communication using queues. Two tasks and one queue is created. one of the task sends a constant message into the queue and the other task receives the same from the queue. after receiving every message, it displays that message over UART. Source Files briefly explained • main - Main file that showcases the two tasks communicating with each other using a queue. • pinmux - Pinmux configurations as required by the application. • uart_if - To display status information over the UART. Usage • Setup a serial communication application (HyperTerminal/TeraTerm). For detail info visit Terminal setup On the host PC. The settings are: - Port: Enumerated COM port - Baud rate: 115200 - Data: 8 bit - Parity: None - Stop: 1 bit - Flow control: None • Run the reference application (Flashing the bin/IAR/CCS). • Observe the status messages displayed by second task on the host over COM port.
