example-7.txt

DSP TMS320 LF2407 or 243 经典 例程, from TI

TMS320F243 DSP - Laboratory

Example 7 : F243SCI

Environment : 

This Example was made for TI's EVM-board TMS320F243. For this particular exercise we need a serial connection to a PC's serial port COM1 or COM2. It is sufficient to cross RxD and TxD. We will use the Windows95/98 - hyperlink command to communicate with the DSP.

Aim:

The DSP-program is sending a string via serial link to W95-Hyperterminal. The baudrate is 9600, 8bit, no parity, 1 stopbit, no protocol. Please start the hyperterminal-session before you start the DSP-program. The DSP then sends the string "F243 UART is fine" in an endless loop. In the hyperterminal-window you should see the incoming strings. The DSP-program uses the SCI-transmit-Interrupt to transmit all characters of the string. After reaching the end of the string the program repeats the string again and again.

 

Files: 

The Example should be used as a project in Code-Composer, the Go-DSP-design tool. The project consists of these files : 

 F243sci.c          -- C-source code for this example

 vectors.asm   -- jump table for Interrupt Service Routines

 regs243.h      -- pointer definitions to memory mapped  perihperals

 F243sci.cmd -- memory map definition file for the linker

 init243.gel       -- Code Composer Setup file ( GO-DSP extension language )

 rts2xx.lib          -- runtime library file (part of TI's compiler/assembler) 

 wait.asm     -- small collection of supplemental assembler functions

  

    Download (all files zipped):   Example 7