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关于TMS320f28379D的串口问题

user5182746
Prodigy 20 points


本人是DSP小白，刚接触这款芯片不久，目前在用LaunchPad进行开发，跑的是一些基本的例程。但是我在跑串口例程的时候发现，PC端的串口助手根本收不到任何数据。例程是用的SCIa，开发板上没有引出对应引脚，因此没有办法通过示波器进行观测，请问能不能帮我解决一下串口无法接收到数据的这个问题

  • 0
    Guru 56631 points
    将SCI 的 TX 和 RX短接 然后在软件端发送 同时查看接收buffer中的数据
    或者通过printf打印输出查看
  • 0
    TI__Guru**** 252096 points

    建议您先看一下例程内的note

    //!  \note If you are unable to open the .ht file, or you are using
//!  a different terminal, you can open a COM port with the following settings
//!  -  Find correct COM port
//!  -  Bits per second = 9600
//!  -  Date Bits = 8
//!  -  Parity = None
//!  -  Stop Bits = 1
//!  -  Hardware Control = None
//!
//!  \b Watch \b Variables \n
//!  - LoopCount - the number of characters sent
//!
//! \b External \b Connections \n
//!  Connect the SCI-A port to a PC via a transceiver and cable.
//!  - GPIO28 is SCI_A-RXD (Connect to Pin3, PC-TX, of serial DB9 cable)
//!  - GPIO29 is SCI_A-TXD (Connect to Pin2, PC-RX, of serial DB9 cable)
//!