DSP -ARM communication

Raunak Kalani

Intellectual 510 points

Other Parts Discussed in Thread: SYSCONFIG

Hi,

I am trying to do the following on the C68167 board:

>>Store a DSP data and instruction in the memory with help of ARM

>>Interrupt the DSP to take data

>>DSP does processing on data based on the command

>>DSP interrupts the ARM when work is done.

I read that SYSCONFIG module is there for sending and receiving interrupts but I am not able to get documentations to use it. Can someone give me the procedure outline to accomplish the above task.

The ARM is running linux via NAND boot and can be given commands through terminal. DSP is being accessed via CCSv5.5.

Thanks

Raunak

over 10 years ago

0 Pavel Botev over 10 years ago

TI__Guru**** 170625 points

Hi Raunak,

Raunak Kalani said:
I read that SYSCONFIG module is there for sending and receiving interrupts but I am not able to get documentations to use it.

Where exactly you have read this?

I think you should use mailbox. See the below thread for more info:

BR
Pavel

0 Pavel Botev over 10 years ago in reply to Pavel Botev

TI__Guru**** 170625 points

See also the below e2e threads:

e2e.ti.com/.../123429
e2e.ti.com/.../345549
e2e.ti.com/.../106291
e2e.ti.com/.../209824

BR
Pavel

0 Raunak Kalani over 10 years ago in reply to Pavel Botev

Intellectual 510 points

Hi,

I saw the example code given at {EZSDK}/board-support/linux-2.6.37-psp04.07.00.02/arch/arm/mach-omap2/devices.c and
{EZSDK}/board-support/linux-2.6.37-psp04.07.00.02/arch/arm/mach-omap2/mailbox.c tried to compile it but am getting many errors like something not declared , undefined reference etc. how do I write a simple mailbox program that would work on my C6A8167 board.
I need the code to work via picocom terminal as well as in CCS v5.5

Thanks
Raunak

0 Pavel Botev over 10 years ago in reply to Raunak Kalani

TI__Guru**** 170625 points

Raunak,

Raunak Kalani said:
I saw the example code given at {EZSDK}/board-support/linux-2.6.37-psp04.07.00.02/arch/arm/mach-omap2/devices.c and
{EZSDK}/board-support/linux-2.6.37-psp04.07.00.02/arch/arm/mach-omap2/mailbox.c

You should use:

ti-ezsdk_dm816x-evm_5_05_02_00/board-support/linux-2.6.37-psp04.04.00.01/arch/arm/mach-omap2/devices.c

ti-ezsdk_dm816x-evm_5_05_02_00/board-support/linux-2.6.37-psp04.04.00.01/arch/arm/mach-omap2/mailbox.c

BR
Pavel

0 Pavel Botev over 10 years ago in reply to Pavel Botev

TI__Guru**** 170625 points

Also the below e2e thread might be in help:

e2e.ti.com/.../280489

https://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/160006

BR
Pavel

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DSP -ARM communication