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2833x
Related Posts

  • Forum Post: F28335: FFT execution time - higher while using external RAM?

    Pradeep Shinde
    My customer has implemented a 4096 point real FFT and then wanted to check the execution time. Here is the scenario : "I have written FFT code putting the input & output buffers and twiddle factors in External Memory. I just now moved it all into fast on-chip RAM, combining RAML4&5 for...
    on Sep 3, 2008

  • Forum Post: EV-CAP to eCAP (FIFO vs Mod4)

    Magnus Wohlfart
    Champs, A customer is using a TMS320F2812 DSP and wants to migrate to the 28335. The problem is now that on the 2812, in the EVx capture, we had a capture fifo status register CAPxFIFO that reflected the number of entries in the capture fifo. On the 28335, there is only the so-called "Mod4-counter"...
    on Nov 25, 2008

  • Forum Post: Minimum interrupt latency of F280x, F2833x, Piccolo A

    Wayne Huang
    Champs, What's the minimum interrupt latency of F280x, F2833x, Piccolo A (from an interrupt to an ISR execution)? (I do not find it out in the document. If possible, would you please show me where it is?) If we want to have a periodic ISR at 10MHz, triggered/interrupted by a 10MHz PWM,...
    on Dec 5, 2008

  • Forum Post: Setting PWM signals 'high' at the same time.

    Woo-Seung Yeo35126
    Dear Champs, I got technical question from my customer about controlling PWM singnals as follows. In motor control inverter application, 6 PWM signals are used to ratate motor. To stop motor, 6 PWM control signals have to be set 'high' as IDLE at the same time. But it looks that TMS320F28335...
    on Dec 24, 2008

  • Forum Post: Re: TMS320F28335 Watchdog Reset Detection

    DaveB123
    You are correct ! On the 281x devices, this flag is not reliable since the sampling window for the reset line is too short . On the 2833x/2823x devices, the sampling interval has been increased to allow more time for the reset line to go high after a watchdog reset occurs. Check Section...
    on Apr 17, 2009

  • Forum Post: Problem in compilation in CCSv3.3

    Chintan Chauhan
    Hi all i am having problem in compilation of given example .. As i compiled it with given project it gives warning [Linking...] "D:\CCStudio_v3.3\C2000\cgtools\bin\cl2000" -@"Debug.lkf" <Linking> >> D:\DOCUME~1\CHINTA~1\LOCALS~1\Temp\TI9323, line 24: error...
    on Apr 21, 2009

  • Forum Post: Re: TMS320f28335 FOC with motor control library

    vsi-pete
    Dear hello84, I suggest you try VisSim/ECD. It is a block diagram language for embedded control targeted at TI C2000 devices. It has a complete motor control block set that allows off-line simulation, automatic C code generation and CCS compile. It will select the proper TI motor control library for...
    on Apr 28, 2009

  • Forum Post: Difficulty reconnecting after locking F28335

    Steve Anderson11134
    I have CCS 3.3 and am using the C2000 series Spectrum Digital XDS510LCUSB for a TMS320F28335ZHAA design. I can compile, flash and verify the software runs correctly on our board, from flash but when I use the F28xx On-Chip Flash Programmer tool in CCS and enter the hexadecimal key and lock the processor...
    on May 1, 2009

  • Forum Post: Re: Difficulty reconnecting after locking F28335

    Lori Heustess
    Steve, The code security module (CSM) on the 2833x will disconnect the JTAG if it is connected and an access is made to secure memory. A byproduct of this is when the device first powers up, before CCS is connected, the CSM may disable the JTAG. To prevent that from occuring, there are two solutions...
    on May 1, 2009

  • Forum Post: Problem in connecting Onboard USB JTAG Emulator XDS100 usb emulator

    Chintan Chauhan
    Hi to all, I am working on Experimenter's kit TMDSDOCK28335, that docking board has on board usb emulator XDS100 USB emulator. This experimenter's kit include Docking board with USB emulator on it, F28335 card, USB cable and CCSv3.0 32K byte limited size comiler. I have installed that CCSv3...
    on May 21, 2009

  • Forum Post: The F28335 running hot in experimenter’s kit TMDSDOCK28335

    Chintan Chauhan
    Hi to all. I have seen Data sheet it Showing -40’C to +85’C operating Temperature range and I have Seen one application note SPRA953A, Which mention how to measure Tcase Case Temperature but I don’t have any Device through which I can measure the temperature. And my device is TMS320F28335ZJZA...
    on Jun 1, 2009

  • Forum Post: File Load error when some portion of code placed in external memory

    Mona Gandhi
    In a DSP/BIOS RAM based project, I get an error "Trouble Writing Memory Block at 0x22a033 on Page 0 of Length 0x5c7: Error 0x00000002/-1143 Error during: Memory, The memory at 0x0022A036 continually indicated it was 'not ready' " when some portion of code is to be placed into external...
    on Jun 25, 2009

  • Forum Post: I2C on TMS320F28335 without interrupt is not working with FM24C04

    Chintan Chauhan
    Hi, to all, I am trying to interface with EEPROM on TMS320F28335 without interrupt, I think i am able to write EEPROM as i get XRDY clear while Writting to the data and uo to end of data transmission but while Read EEPROM RRDY bit of status Register is not getting clear. my EEPROM is having only...
    on Jun 26, 2009

  • Forum Post: Operating several slave devices through single SPI

    Alexander Smirnov
    Hello, I'm using TMS320F28335 board with DSP/BIOS. I need to control 2 devices through single SPI. It is arranged such that SPISIMOA and SPICLKA outputs are shared between these two devices. I have a GPIO pin for each device that replaces SPISTEA functionality, so I need to control them manually...
    on Jul 2, 2009

  • Forum Post: About the CMD file!

    xiong4274
    Hi, I don't understand the CMD file clearly. Is there any document describes it? The target chip is TMS320F28335! Thanks in advance!
    on Aug 20, 2009

  • Forum Post: Re: About the CMD file!

    BrandonAzbell
    The format of the linker command file can be found in the TMS320C28x Assembly Language Tools User's Guide ( SPRU513 ). This can be found on the TMS320F28335 Product Folder in the Users Guide section.
    on Aug 20, 2009

  • Forum Post: Re: Is there an optimized C2000 floating point filter library?

    Markus Hofinger
    Hi Charlie, Thanks for your quick reply! I'm new to C2000 series and I therefore don't know exactly about all the possibilities of the CPU and FPU, but as far as I know the CPU and FPU should be capable of DSP improvements, like circular buffering or direct multiply and accumulate instructions...
    on Sep 17, 2009

  • Forum Post: Re: 28335 Control Card - Test with different crystal (24MHz instead of 20MHz)

    Markus Hofinger
    Just in order to make this post complete: Changing the crystal worked in my case, and I`ve found another reference on the TI E2E community about changing the crystal on the control card of the 28335, for those of you who are also in need of changing it. http://e2e.ti.com/forums/p/5893/22174.aspx
    on Nov 15, 2009

  • Forum Post: apparent inconsistency between header file and .c file in Example code (Example_posspeed)

    gideon prior
    Hello all, I am using a TMS320f28335 ezdsp and I am trying to get a 2048 line quadrature encoder to work. I am goin over the example code from the DSP2833X examples and inside Example_posspeed.h there is an int called mech_scaler. The comment says .9999/total count, total count = 4000. It is then initialized...
    on Dec 8, 2009

  • Forum Post: Delfino TMS320F28335 External Reference Oscillator Clock Option (Recommendations)

    Robb Sabolovic
    Hi Everyone, In the TMS320F28335 datasheet section 3.6.1.1 External Reference Oscillator Clock Option below the specifications, we have added the following: TI recommends that customers have the resonator/crystal vendor characterize the operation of their device with the DSC chip. The resonator...
    on Dec 18, 2009

  • Forum Post: program the internal flash

    Tim xu
    Folks, I am working on a customized F28335 board, the only available boot option for me is to boot from internal flash. Fortunately, I got one JTAG emulator to download program into internal ram for debugging purpose. But sooner or later the program needs to be written to internal flash. The...
    on Dec 29, 2009

  • Forum Post: Help! I am at my wits end. My code inconsistently operates (somes it will enter an interrupt, sometimes it will not)

    gideon prior
    Hello all, I am having a problem with the ezDSP using the TI TMS320f28335. I need to eventually use this to switch up to 2000 Amps in a motor and needless to say it needs to be rock solid. I have set up a test program, where I initialize the chip, setting up the ADC and a timer using the ePWM peripheral...
    on Mar 16, 2010

  • Forum Post: searching for "drvlib280x" for F28335

    Alborz Sedaghat
    Hi all, I have been using PMSM3_1 applicationNote which is originally written for F2808. I have just started porting this applicationNote to F28335. The applicationNote uses a set of h/c files called " drvlib280x ", these include PWM generation, QEP, ADC and other drivers needed for motor...
    on Mar 17, 2010

  • Forum Post: Too many results from ADC conversions.

    Alborz Sedaghat
    Hi all, I am re-writing some of the "DMC-library" drivers from F2808 to F28335. I have some difficulties with the ADC Driver. I have simply coded: // Enable CNT_zero interrupt using EPWM1 Time-base EPwm1Regs.ETSEL.bit.INTEN = 1; // Enable EPWM1INT generation EPwm1Regs.ETSEL.bit...
    on Mar 19, 2010

  • Forum Post: Globals allocation problem with the TMS320F28335 (Code Generation Tool v5.2.5) : INT allocated in 1 byte !!!

    Nicolas F
    Hello, I am using the F28335 in my application. I currently have a problem with the compiler: I noticed during a debugging session some bad behaviours from some of my globals. In fact, the value these globals had during debug were impossible. Later, I checked the .MAP file of my project, and...
    on Apr 20, 2010
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