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  • RE: Brushless Positioning Control using tm4c123 tiva

    Thank You BP101, But there are no gerber files of the board inside, just the footprint of the LM3S8971 .
    • Answered

  • RE: External ADC triggers from PWM pins locks sequencers, random POR results.

    Resolved
    Past testing results LM3S8971 with same 3 phase motor firmware is now producing abnormally high voltage artifacts TM4C1294.
    • Answered

  • RDK-BLDC

    Resolved
    Other Parts Discussed in Thread: LM3S8971 , EK-TM4C1294XL , EK-TM4C123GXL , DRV8301 Hi there, I am interested in RDK-BLDC, and have contacted TI store trying to buy the whole kit, but unfortunately, the kit is no longer available. I have few of these LM3S8971…
    • Resolved
    • Answered

  • EK-TM4C1294XL: ADC0 locks up from channel input spike when GPIO external trigger

    Resolved
    Part Number: EK-TM4C1294XL Other Parts Discussed in Thread: LM3S8971 , INA240 , TIDA-00778 , DRV8305 , , TL431 , TM4C1294NCPDT , INA303 , UCC27714 , UCC21520 , TIDA-00195 After removing an intermediate dongle PCB 3" jumper wires between inverter HVIC PCB and…
    • Resolved
    • Answered

  • Dead band pwmB pulse is shorter than pwmA seems reverse of datasheet illustration.

    Resolved
    Other Parts Discussed in Thread: LM3S8971 , STRIKE , MOTORWARE LM3S8971 RA2 & TM4C1294NCPDTi3 RA2 produce same symptom. PWM dead band generators pwm out pulse width asserts 120ns FED as programmed producing distinct delay pulse appended to end of additional periods…
    • Resolved
    • Answered

  • EK-TM4C1294XL: Confusing note table 25-58 analog comparator when using internal voltage reference

    Resolved
    Part Number: EK-TM4C1294XL Other Parts Discussed in Thread: INA240 , LM3S8971 Note: c. The external voltage inputs to the Analog Comparator are designed to be highly sensitive and can be affected by external noise on the board. For this reason, VINP and…
    • Resolved
    • Answered

  • RE: Why GPIOPinConfigure versus GPIODirModeSet to assign GPIO pin to named AFSEL peripheral.

    Resolved
    Hi Amit, Was back tracking the LM3s8971 PWM0 fault pin 71 input and migration of SW into TM4C. That was Stellaris driverlib 10636 PB3 drive pin 71.
    • Answered

  • RE: Setting up an adc interrupt

    Resolved
    That's very interesting and perhaps your testing on TM4C123 tool chain? Perhaps it could be the TM4C1294NCPDT tool chain. I simply avoid setting any channel in last step with END and all sequencers configure every time without issues. That same…
    • Answered

  • Does ADC hardware averaging effect conversion time and latency.

    Resolved
    Other Parts Discussed in Thread: LM3S8971 , INA282 Seems plausible hardware averaging decreases throughput by a factor of the SPS factor would impact the listed conversion time (t ADCCONV = 1us). Example: If 8x over sampling is enabled the conversion time multiplies…
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    • Answered

  • How many PWM clocks must pwmA pulse width remain above PWMnDBRISE when PWMnDBCTRL enable bit are toggled.

    Resolved
    Other Parts Discussed in Thread: LM3S8971 , TM4C1294NCPDT , MOTORWARE TM4C1294i3NCPDT: There is a datasheet stated limitation pwmA pulse width must be kept higher than PWMnDBRISE pulse width value at all times. Ok by how many PWM clocks must pwmA pulse width…
    • Resolved

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