TMS320F28075: SPI SETUP - Can you support?

Peter Adamcik

Intellectual 360 points

Part Number: TMS320F28075
Other Parts Discussed in Thread: SYSCONFIG, C2000WARE

Hi Guys, Happy New Year.

Can we get some support in setting up SPI-B and SPI-C.

Our project is using CCS 12.8.1 and is an Assembler only project.

SPI-B and SPI-C pins is as follows:

SPISIMOB - GPIO 24. SPISIMOC - GPIO 69

SPISOMIB - GPIO 25. SPISOMIB - GPIO 70

SPICLKB - GPIO 26. SPICLKC - GPIO 71

We will be using other assigned pins to control the CS lines to the external SPI SRAM so no need to setup SPISTEB or SPISTEC pins.

Is it possible to setup the SPI in assembler via direct register setting or do we really have to create a C project and setup the SPI in C and then branch to our ASM file via an extern command.

Please let me know.

Thanks and hope to hear from you soon.

Peter

4 months ago

0 Delaney Woodward 4 months ago

TI__Mastermind 24060 points

Hi Peter,

Yes, you should be able to do all SPI initializations from your asm file. The easiest way to accomplish this would be to configure the settings in a C2000ware empty example ([C2000ware install]/driverlib/f2807x/examples/cpu1/empty_projects/empty_driverlib_project), you can use the Sysconfig GUI to do this quickly. Then, build, load and run the project in CCS and step through to the SPI_init() C function in Board_init() (should be part of the generated file: board.c). If you open the disassembly viewer (View -> Disassembly) on the SPI_init() function, it will show all the C28x assembly code being used for the SPI initializations, and you should be able to use this in your assembly file. You can also do the settings manually, but I would try to follow the order of register writes used by the Sysconfig generated code for your initializations.

Best Regards,

Delaney