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

09/12/2014

MW 09:19 AM Software Development: RE: Adding SPI flash

It would not apply (different driver, different logic handling platform arguments). Michael Williamson

JC 09:17 AM Software Development: RE: Adding SPI flash

Note that if you want to use the hardware designated chip select for that spibus instead of a gpio then the SPI_INTERN_CS variable is used. Unsure if this applies to a fpga spibus though. Jonathan Cormier

09/11/2014

MW 06:18 PM Software Development: RE: Adding SPI flash

Hi Mary,
Have you configured the pin-mux for the DA850_GPIO2_15, which would correspond to the chip select you are selecting for your part?
The way you have configured it is you are having the SPI controller drive that chip select ... Michael Williamson

MF 01:20 PM Software Development: Adding SPI flash

We have a SPI serial flash device on our board, an M25PE80. It is connected to SPI1 with SPI1_CS1.
I created a baseboard file based on baseboard-industrialio.c and using what was done for the SPI flash in board-mityopmanl138 as a gui... Mary Frantz

09/10/2014

DB 01:46 PM Software Development: RE: DSP HelloWorld Message Queue Buffer Length

Thanks for the clarification on the message handler code, and the message structure recommendation.
It definitely will help me in crafting the ARM/DSP comms.
Regards,
Doug Doug Browning

JC 11:01 AM Software Development: RE: DSP HelloWorld Message Queue Buffer Length

Doug,
As far as I understand the anLength is really the length of the buffer passed between the DSP and ARM and is likely going to be bigger than your actual message. I agree that the description of the parameter is misleading.
Wh... Jonathan Cormier

DB 10:01 AM Software Development: DSP HelloWorld Message Queue Buffer Length

I'm modifying the DSP HelloWorld example code from the Wiki site to transfer data types other than strings (see SW Forum message "Data Transfer over DSPLink").
While debugging the transfer of an array of ints, I noticed that in the AR... Doug Browning

09/02/2014

JC 08:33 AM Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

Have you made any progress with this problem? Jonathan Cormier

08/19/2014

HK 11:31 AM Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

yes,
echo "146" > /sys/class/gpio/export --> sh: write error: Invalid argument
it may be that fpga_gpio module is not runing
Thank you.
HYUNG KI KIM

JC 08:50 AM Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

Did you mean Jonathan Cormier

HK 08:26 AM Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

HYUNG KI KIM wrote:
> I'm tryint to control FPGA of GPIO on the linux driver side with MityL138-DSP(L138-FI-236-RL) mdule.
> ...
HYUNG KI KIM

HK 08:24 AM Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

HYUNG KI KIM wrote:
> I'm tryint to control FPGA of GPIO on the linux driver side with MityL138-DSP(L138-FI-236-RL) mdule.
> ...
HYUNG KI KIM

HK 08:23 AM Software Development: How to probe the fpga_ctrl & fpga_gpio.ko module

I'm tryint to control FPGA of GPIO on the linux driver side with MityL138-DSP(L138-FI-236-RL) mdule.
and, loading the myFPGA.bin , fgpa_ctrlko, fpga_gpio.ko module is successfule.
also, test tool of fpgautil is work well.
modprob... HYUNG KI KIM

08/18/2014

AD 04:31 PM PCB Development: RE: Protecting MityDSP module during development

Hi Udi,
Yes the FPGA I/Os can be damaged by sinking too much current - powered or off. The I/Os have protection diodes to the VCCO and GND rails that can withstand a max of 10mA per pin. Adding series resistors to the I/O pins that ... Adam Dziedzic

UF 03:39 PM PCB Development: Protecting MityDSP module during development

We just fried a MityDSP L138F module, and I'm not sure why. I'm suspecting that the problem was that we had an ADC module connected to it (via FPGA) while the L138F module was off. I'm measuring 1.8V on some of the ADC output pins. Cans ... Udi Fuchs