example-9.txt

DSP TMS320 LF2407 or 243 经典 例程, from TI

Example 9 : F243SCI3

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:

Use W95-Hyperterminal. The baudrate again is 9600, 8bit, no parity, 1 stopbit, no protocol. Write a textfile containing a single line of any text ending with a <CR>.  Start now the DSP-program . Send then the textfile from W95-hyperterminal to  the DSP-EVM-board. The DSP's receiver monitors the incoming textstring by receiver-interrupt-service. After the <CR> was recognized the DSP will transmit the string 'READY' back to the W95-Hyperterminal session.  The example uses both the SCI-transmit and receive-interrupt services. 

Files: 

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

 F243sci3.c         -- C-source code for this example

 vectors.asm   -- jump table for Interrupt Service Routines

 regs243.h      -- pointer definitions to memory mapped  perihperals

 F243sci3.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 9