I am running Angstrom Linux on the ARM core. So once I have built my SYS/BIOS DSP application in windows, I use putty's scp program "pscp" to copy the hex file to Linux. Then I run the DSP_Load program from Angstrom using a putty terminal. If you are going to get ride of Angstrom or another Linux from the ARM core you will not be able to use the DSP_Load program. I have also written a DSP_Flash application that again from the embedded Linux writes the DSP program to the SPI flash of the LogicPD's OMAPL138 SOM. Then on power up I change the UBL to load the DSP application and then launch Linux. This way the DSP program is running before Linux finishes booting. Sounds something like what you had setup on your OMAP system.
On Saturday, September 21, 2019 at 10:55:21 PM UTC-5, lazarman wrote: > > > > Hi Dan > Interesting I worked on high end commercial motor controller which used > L138. the ARM ran Green Hills Integrity and the DSP Sysbios. This system > intialized the DSP caches first before loading the DSP to RAM. the > executable was stored on flash that could be NFS mounted for ARM and DSP > executable update by PC. The IPC was done using shared Low and High > priority Queues in the DSP shared RAM. Our application was extremely hard > Real Time and proprietary and I'm retired but probably have a a TI L138 > eval Board I purchased sitting around I might dig out . > If this load DSP code is available it might provide a refresher for me as > a hobby. I'd like to ditch Linux on the ARM for my purposes maybe use TI > RTOS. Are you emulating both cores simultaneously with JTAG or using serial > debug on the DSP? How are you getting DSP hex file into Linux. > Thanks > > Sent from Yahoo Mail on Android > <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature> > > On Sat, Sep 21, 2019 at 9:07 PM, Daniel Block > <[email protected] <javascript:>> wrote: > Richard, I have been working with the BeagleBoard X15 the past four > months off and on and have made some good progress in using the DSP cores > running SYS/BIOS applications while the A15 cores are running Debian > Linux. I develop my DSP programs in CCS and generate Hex files that I can > copy to Linux. Then from Linux I have created a DSP_Load application that > loads and runs the DSP core with the hex file. To date my DSP program uses > Timer 4 as the SYS/BIOS timer and timer 5 as a HWI timer, an external GPIO > interrupt (which would be helpful for your external ADCs) and communicates > with UART 8, 9 and 10. I teach a Mechatronics class at the University of > Illinois where currently I instruct the class using the OMAPL138 processor > where I use a very similar Linux program to load the DSP core of the > OMAPL138. I am hoping to switch my Mechatronics class to the BB x15 this > Spring 2020. Currently I have a student working on developing a DSP > program that uses the MCSPI3 and MCSPI4 serial ports of the AM572x. Once I > have the McSPIs working and a communication scheme, I hope to use IPC, > between Linux and the DSPs I will switch my class to the BB x15. Once I > switch my class I will be writing up instructions on how to program the > DSPs and that may be useful to you when using the BeagleBoneAI. I can give > you what I have done so far, but it is not documented super well. > The question I have with the BeagleBoneAI is does it bring out to its > headers any of the McSPI pins? I have not looked at the schematics closely > to know the answer. You may want to check that and if the pins do not come > out you could switch to the BB x15 which has four headers that bring out > many more of the pins. If you are interested in my OMAPL138 work you can > see my course web site at http://coecsl.ece.illinois.edu/se423 > > > On Friday, September 20, 2019 at 11:43:43 PM UTC-5, Richard Tarbell wrote: > > > Greetings All! > > Is there/will there be tutorials, on how to run Linux on the Beaglebone > AI, but run real time code on its two DSP processors? > > For instance, I am looking to do a motor control application (100kHz > sampling with external ADCs connected via SPI). Is this possible to run on > the DSP cores? > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > To view this discussion on the web visit > > https://groups.google.com/d/msgid/beagleboard/5bd8dfa8-8cd1-4f7d-8c03-de023fc22685%40googlegroups.com > > <https://groups.google.com/d/msgid/beagleboard/5bd8dfa8-8cd1-4f7d-8c03-de023fc22685%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/ede3556f-0cbc-4227-ba6b-694bd0e1e1bc%40googlegroups.com.
