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基于目前TMS320C54X高速DSP芯片缺少UART标准接口,与带UART的外设直接进行异步通信比较困难的问题.介绍了一种用软件模拟实现UART方法,该方案采用最少的外部硬件电路,简单方便,灵活可靠;根据实际经验,给出了利用示波器观察UART收发数据的波形,并根据观察的结果,提出了对UART进行调试的两种方法.
Based on the lack of UART standard interface of TMS320C54X high-speed DSP chip and the difficulty of asynchronous communication directly with the peripherals with UART, a UART method using software simulation is introduced. The scheme uses a minimum of external hardware circuits, which is simple, convenient and flexible Reliable; According to the actual experience, the oscilloscope is used to observe the UART transceiver data waveform, and based on the observation of the results, proposed two methods of debugging UART.