CCS/TMS320C6678: problems while DSP and FPGA communication through EMIF

migrants

Part Number: TMS320C6678

Tool/software: Code Composer Studio

I am debugging the communication between DSP and FPGA. I want to use GPIO as an interrupt input, scheduling DSP to read data from the FPGA; use EMIF CS2 as a data transfer interface. The initialization file configured with EMIF and GPIO; use the CFG file to configure the rising edge of the GPIO0 pin as an interrupt trigger. But now the program does not go into the function corresponding to the GPIO interrupt.

Is there any problem with this configuration? In addition to configuring EMIF and GPIO registers，do I also need to configure other registers, such as PSC, PLL?

This is our first contaction with the board 6678. Hope that experts would educate us!

over 6 years ago

0 Cvetolin Shulev-XID over 6 years ago

TI__Guru 65405 points

I've forwarded this to the EMIF c66x experts. Their feedback should be posted here.

BR
Tsvetolin Shulev

0 lding over 6 years ago in reply to Cvetolin Shulev-XID

TI__Guru* 95265 points

Hi,

Is this your customized C6678 board? What SW package you used to do the GPIO, EMIF registers? How do you configure the GPIO interrupt? In Processor SDK RTOS, there is a GPIO LED toggle example, at least the GPIO interrupt is working, you can refer to it: processors.wiki.ti.com/.../Processor_SDK_RTOS_Software_Developer_Guide

There is PSC domain for EMIF which you need to enable, no PSC for GPIO. For DSP main PLL, you can set it to 1000MHz.

Regards, Eric

Processors

Processors forum

CCS/TMS320C6678: problems while DSP and FPGA communication through EMIF