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

01/11/2018

JC 02:13 PM Software Development: RE: Linux USB Gadget is not working on custom board

Okan Çalış wrote:
> Michael Williamson wrote:
> ...
Woops sorry I was looking at the 2.6 kernel sources. In the 3.2 branch Peripheral mode can be configured in the baseboard. Jonathan Cormier

OÇ 08:47 AM Software Development: RE: Linux USB Gadget is not working on custom board

Michael Williamson wrote:
> Do you see these lines even if you don't connect the PC? (I was looking to see if the kernel is detecting when you plug in the PC and complaining about something, or if it doesn't see any activity at all).... Okan Çalış

01/10/2018

JC 02:37 PM Software Development: RE: Linux USB Gadget is not working on custom board

Could you attach your .config?
By default, CONFIG_USB_MUSB_OTG is selected which puts the kernel in OTG mode. In this mode, if USB*_ID is pulled low then the device enters host mode and if its left floating then its in Peripheral mod... Jonathan Cormier

OÇ 01:27 PM Software Development: RE: Linux USB Gadget is not working on custom board

> Do you see these lines even if you don't connect the PC?
Yes, I see those lines even when not connected to the host.
I did a @dmesg@ in the Critical Link board, but those lines don't appear there (when not connected).
> ...
I ... Okan Çalış

MW 01:06 PM Software Development: RE: Linux USB Gadget is not working on custom board

So if you are trying to run in peripheral mode, I am not entirely sure I understand the last lines of your log file: Michael Williamson

OÇ 12:45 PM Software Development: RE: Linux USB Gadget is not working on custom board

Hi Mike,
> Are you using USB as OTG? Host or peripheral mode for your test?
In our tests, the device acts as the peripheral and the computer as the host.
> ...
I did a @dmesg@ before and after plugging the USB, but the output i... Okan Çalış

MW 12:13 PM Software Development: RE: Linux USB Gadget is not working on custom board

Are you using USB as OTG? Host or peripheral mode for your test?
If you do a dmesg (before and after plugging in a USB device), do you see anything related to USB?
The driver for the ARM in OTG mode wants to see the VBUS in toggle... Michael Williamson

OÇ 11:37 AM Software Development: Linux USB Gadget is not working on custom board

Hi,
We've been working on a MityDsp-L138F SoM and so far managed to use USB GadgetFS feature of the Linux kernel to send and receive bulk data through USB 2.0.
We also have a custom-manufactured board based on MityDsp. To adapt the... Okan Çalış

01/09/2018

OÇ 01:37 PM Software Development: IPC and uPP interrupts APIs conflict

Hi,
We've been working on a MityDsp-L138F. The ARM and DSP cores run Linux and SYS/BIOS, respectively. We're using SysLink for inter-processor communication. Specifically, we send Notify events between the cores. Up to this point, eve... Okan Çalış

01/04/2018

VP 02:06 PM Software Development: Real time signal input and output with uPP interface in MityDSP

Hi,
I have a custom board with
1) MityDspl-138F module (with FPGA)
2) No Ethernet port
3) UART,USB,SD CARD interface
4) We are using ADC5560 and DAC5672, reference is taken from Analog Expansion Board.
ADC and DAC both operates ... Vivek Ponnani

12/27/2017

OÇ 09:57 AM Software Development: RE: Changing UART1 to UART2 in Linux Kernel

Just noticed I left the @bootargs@ as @ttyS1@.
Changing that to @ttyS2@ solved that issue.
Sorry, I wasn't expecting such a simple solution. Okan Çalış

OÇ 05:32 AM Software Development: Changing UART1 to UART2 in Linux Kernel

Hi,
We've been working on a MityDsp-L138F board, and I can boot to Linux with NFS, with the following environment variables: Okan Çalış

12/21/2017

VP 11:56 AM Software Development: Low frequency input (5 Hz to 20KHz processing) for mitydspl138F

Hi,
I have a custom board with
1) MityDspl-138F module (with FPGA)
2) No Ethernet port
3) UART,USB,SD CARD interface
4) We are using ADC5560 and DAC5672, reference is taken from Analog Expansion Board.
ADC and DAC both operat... Vivek Ponnani