Mity CPU Platforms » ARM9 Based QNX Platforms

11/15/2011

03:30 PM Software Development: RE: OMAP I2C

Yes, it works (thanks):... Mark Lyon

03:24 PM Software Development: RE: OMAP I2C

Mark,
I probably should have used O_RDWR instead of O_RDONLY. I am surprised it worked with just O_RDONLY.
The ... John Pruitt

03:17 PM Software Development: RE: OMAP I2C

Interesting. We were using Qnx's demo which uses DCMD_I2C_RECV rather than DCMD_I2C_SENDRECV so that was part of the... Mark Lyon

01:27 PM Software Development: RE: OMAP I2C

I am attaching a test program that was used on a board to read the factory config information using i2c0.
The outp... John Pruitt

11/14/2011

05:13 PM Software Development: RE: OMAP I2C

Can you try to get the sample program that the qnx engineer used?
Thanks.
John Pruitt

09:47 AM Software Development: RE: OMAP I2C

An engineer from QNX hooked a scope to I2C0 lines on their EVM board and sent the sendrecv command. They were able to... Mark Lyon

11/11/2011

03:04 PM Software Development: RE: OMAP I2C

IFor what it is worth, it should be noted that the i2c accesses in the startup code and in the i2c_get utility are do... John Pruitt

11/03/2011

02:08 PM Software Development: RE: FPGA Driver

I have posted a new BSP which has a fixed FPGA driver and fix to the timer routines so the clock period can be change... John Pruitt

11/01/2011

09:12 AM Software Development: RE: OMAP I2C

Mark,
I2C0 is not something that needs to be turned on. It is used internally in the startup code to read configur... John Pruitt

09:00 AM Software Development: RE: OMAP I2C

It looks like neither I2C driver is started by default.
We are trying to use I2C0
There is an error generated if we... Mark Lyon

10/28/2011

02:44 PM Software Development: RE: FPGA Driver

Mark,
The files under /dev/fpga are not intended to be executed. They are intended to be opened and then read from... John Pruitt

02:27 PM Software Development: RE: FPGA Driver

Tried that - now I'm having a very strange, possibly unrelated problem where the files created under /dev/fpga are cr... Mark Lyon

10/27/2011

05:04 PM Software Development: RE: FPGA Driver

Mark,
These is a mistake in the fpga driver as provided. It is printing out the virtual addresses for the cores in... John Pruitt

03:35 PM Software Development: RE: FPGA Driver

Understood. I have a memory block in the FPGA that I was able to examine using mmap_device_memory().
The offset wa... Mark Lyon

03:29 PM Software Development: RE: FPGA Driver

Mark,
The 5 fpga device files (cmd, image, state, version, and devices) are for loading an image into the fpga and... John Pruitt

02:51 PM Software Development: RE: FPGA Driver

I have the FPGA driver loaded, with the FPGA mapped into 0x66000000.
If I want to access the FPGA for a user applica... Mark Lyon

10/26/2011

03:57 PM Software Development: RE: Pin MUX

Just saw a signal out of the port - thanks. It may have been a conflict with the I2C or something else we tried along... Mark Lyon

03:19 PM Software Development: RE: Pin MUX

Mark,
I have tried using a scope on an INDIO board (80-000268RI-2 rev. B, serial number 110765) with a module (L13... John Pruitt

07:45 AM Software Development: RE: Pin MUX

We are using RS-232 at TTL levels, so that is not a problem.
We had done all the steps you outlined and we are not s... Mark Lyon

10/25/2011

04:32 PM Software Development: RE: Pin MUX

Mark,
I do not know of any qnx code that has been used with this port. I have been talking with the hardware guys ... John Pruitt

10/24/2011

04:26 PM Software Development: RE: ClockPeriod

John,
The timer_load callout only gets called when you change the system tick period, so it will only be indetermi... Rob Gillis

03:55 PM Software Development: RE: ClockPeriod

Rob,
I think the method I described was a way of giving the timer control over the reload so it could be done grac... John Pruitt

03:44 PM Software Development: RE: ClockPeriod

Hi John,
I need to do more testing, but it looks like I have a fix. You cannot change the timer's period while it... Rob Gillis

03:25 PM Software Development: RE: Pin MUX

We were able to toggle other GPIO lines that come out the connectors on the back, but unable to see any activity with... Mark Lyon

11:32 AM Software Development: RE: Pin MUX

Mark,
I did not understand the details of uart 2 on our kit before. As I understand it now, it is connected as a h... John Pruitt

10:55 AM Software Development: RE: Pin MUX

It may be more of a hardware problem - we have the industrial IO board 80-000268RI-2 serial 110759 and we see no RS-4... Mark Lyon

10:21 AM Software Development: RE: Pin MUX

Here is a snapshot of my last attempt (attached)
Devices configured:
EMAC (RMII)
EMIFA/EMIFB
MMC/SD1
UART0,1... Mark Lyon

09:48 AM Software Development: RE: Pin MUX

Mark,
Please send you pinmux (both the .pin and the .h files) and startup script files. You can just attach them t... John Pruitt

07:47 AM Software Development: RE: Pin MUX

We aren't having any luck, John will try to call, and we've sent along the files. Mark Lyon

10/20/2011

05:22 PM Software Development: RE: ClockPeriod

The QT_TIMER_LOAD value of 0x30 is just an offset into the system page or some structure. It is not the actual load v... John Pruitt

05:20 PM Software Development: RE: ClockPeriod

Rob,
It looks like there is a callout function that does not really do what it is supposed to. I suspect the kerne... John Pruitt

01:32 PM Software Development: RE: ClockPeriod

Hi John,
The pidin program does not display the info we're interested in, so I modified my clock_period program to... Rob Gillis

10:06 AM Software Development: RE: Pin MUX

You will probably need to modify the omapl138_psc_init() to include a line like:
omapl138_psc_enable (PSC_MODULE_U... John Pruitt

09:27 AM Software Development: Pin MUX

We are trying to use the MityDSP L138 UART2 on the PROFIBUS dev kit with Qnx. We are connecting via J504.
I saw men... Mark Lyon

10/18/2011

02:48 PM Software Development: RE: ClockPeriod

Rob,
With regards to the syspage, I was hoping to see values change after changing the ClockPeriod. Sections relat... John Pruitt

02:37 PM Software Development: RE: ClockPeriod

John,
I just tried the above mentioned change, and as you suspected it did not fix the problem but was worth a try... Rob Gillis

02:38 PM Software Development: RE: QNX BSP Timers

John,
We have tried using ClockCycles(). I think it may be working for us but will check with the other developer... Rob Gillis

10/17/2011

10:06 AM Software Development: RE: QNX BSP Timers

Rob,
Have you tried using ClockCycles()?
John John Pruitt

10:02 AM Software Development: RE: ClockPeriod

Rob,
I see your point.
We have not provided the arm clock handling routines so in that sense, this would seem t... John Pruitt