POINT-TO-POINT SERIAL COMMUN. USING THE SPI MODULE OF THE TMS320F240 DSP CONTROL

This application report discusses serial communications using the Serial Peripheral Interface (SPI) synchronous serial port of the Texas Instruments (TIä) TMS320F240 digital signal processor (DSP) controller. A general description of SPI features is provided for necessary background information. The CPU/SPI interface description includes a discussion of the bus interface and interrupt architecture.

An overview of inter-processor communication topologies describes how the SPI module is used in several applications. A hardware implementation example of a point-to-point communication scheme uses the 'F240 SPI in slave mode connected to a Seimens 'C167 SSC configured as the SPI master.

All 'F240 code is generated using TI assembly language tools and validated on the 'F240 EVM hardware. All 'C167 code is generated using the Keil demonstration tools and validated on the Keil MCB-167 evaluation board. Source code for both processors, as well as the necessary header, build, and link files, and tools options are provided as appendices so that the reader can modify this solution to suit a specific need.

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