CCS/RM48L952: Can not create an interrupt for EMIF_nWAIT in FreeRTOS project

Simon Lin1

Part Number: RM48L952

Tool/software: Code Composer Studio

Dear Sirs,

I develop a new project from none OS to FreeRTOS with RM48L952. The EMIF bus is connected to a FPGA. And FPGA use EMIF_nWAIT pin to inform RM48 the bus busy or free.

I can use channel #41 IRQ to wait EMIF bus free on None OS project. And it works fine.

Now I use HAL code generator to create FreeRTOS project. But I can not find that interrupt be created. Please see pictures below.

1. I am not sure if I can read the EMIF_nWAIT pin value directly just like gpio or any way. If I can read it, I will use it to monitor emif bus.

2. Is it possible to generate an interrupt for EMIF_nWAIT on FreeRTOS project? Or do I miss some HALcodegen config steps?

Thanks for your help.

Best Regards,

Simon Lin.

over 5 years ago

0 QJ Wang over 5 years ago

TI__Guru**** 197036 points

Hello Simon,

The VIM Channel 41 is for EMIF interrupt. The name of VIM channel 41 in freeRTOS mode is not correct. But you can still use this channel for EMIF interrupt.

1. No, EMIF_nWAIT can not be read directly as GIO pin.

2. Yes, as I said the name for VIM channel 41 is not correct in freeRTOS example.

0 Simon Lin1 over 5 years ago in reply to QJ Wang

Prodigy 80 points

Dear QJ,

Thanks a lot. I can got interrupt from EMIF_nWAIT pin now.

Simon Lin.

Arm-based microcontrollers

Arm-based microcontrollers forum

CCS/RM48L952: Can not create an interrupt for EMIF_nWAIT in FreeRTOS project