Mity CPU Platforms » MityDSP-L138 (ARM9 Based Platforms)

03/07/2024

JC 08:48 PM Software Development: RE: DSP FPGA EMIF GPIO Failure

Alright, let's simplify. The base module's register 0 contains some version info. You can read it 4 times in a row and then it will start repeating. For example on my board: Jonathan Cormier

03/06/2024

KB 12:50 AM Software Development: RE: DSP FPGA EMIF GPIO Failure

Thank you for answer.
I modified the part you mentioned and changed it to 0x66000080, but it still doesn't work.
today
https://support.criticallink.com/redmine/projects/arm9-platforms/wiki/DSP_Quick_Start
I've tried loading it al... Kyungguk Bok

03/05/2024

JC 05:05 PM Software Development: RE: DSP FPGA EMIF GPIO Failure

Kyungguk Bok wrote:
> hello.
> ...
Okay, so that should mean your fpga code is fine. Note its a good idea to make sure the fpga_gpio.ko kernel module isn't loaded if you are trying to control it from the DSP. They could fight each ot... Jonathan Cormier

03/04/2024

KB 09:29 AM Software Development: DSP FPGA EMIF GPIO Failure

hello.
I am having a problem controlling GPIO with MityDSP-L138F through DSP and FPGA EMIF communication, so I am leaving a question.
FPGA source
constant CORE_BASE_MODULE: integer := 0;
constant CORE_TS_MODULE : integer := 5;
... Kyungguk Bok

02/19/2024

JC 08:24 PM Software Development: RE: DSP EMIF Example Code

Kyungguk Bok wrote in message#6580:
> Thank you for answer.
> ...
Yup, so you should be able to export gpio 144 and access the gpio Jonathan Cormier

02/16/2024

KB 01:52 AM Software Development: RE: DSP EMIF Example Code

Thank you for answer.
_It's not a bad idea to make sure you can control the gpio from Linux before operating it on your DSP._
I think that's a good thing to say. I think it's a good idea to solve problems one by one.
__How did ... Kyungguk Bok

02/15/2024

JC 08:51 PM Software Development: RE: DSP EMIF Example Code

Kyungguk Bok wrote in message#6578:
> Thank you for answer.
> ...
I'm pretty sure the EMIFA will get configured before fpga_ctrl.ko and fpga_gpio.ko module files are loaded. So they aren't strictly required as long as the fpga is loade... Jonathan Cormier

KB 04:36 AM Software Development: RE: DSP EMIF Example Code

Thank you for answer.
(using MityDSP-L138F Devkit)
When using EMIFA to control the LED by controlling the FPGA's GPIO, I found out that EMIFA is set in the kernel when the fpga_ctrl.ko and fpga_gpio.ko module files are loaded. I also f... Kyungguk Bok

02/13/2024

JC 08:11 PM Software Development: RE: DSP EMIF Example Code

> If you try to write code related to EMIF in CCS, you will need a header file called csl.emifa.h. How can EMIF be performed without the need for a header file? I would like some basic information about EMIF.
The kernel sets up the ... Jonathan Cormier

KB 12:06 AM Software Development: RE: DSP EMIF Example Code

Thank you for answer.
Currently working on MityDSP-L138F.
The kernel is loaded on ARM, and HelloworldDSP and FPGA from Wiki have been converted to .bin files so that they are automatically loaded upon booting.
If you try to write code... Kyungguk Bok