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Type: Posts; User: rt54321

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  1. Teensy 4.0 - synchronizing PWMs and left/center/right-aligned configurations

    Greetings All!

    Using the Teensy 4.0 with a PWM switching output of 25kHz for an AC-DC boost converter. I am using an external parallel interface ADC to simultaneously sample input voltage, input...
  2. External ADCs for power electronics/motor control applications ("real time control")

    Greetings All!

    I'm trying to get a parallel multi-channel external ADC for the teensy 4.0 (simultaneous sampling) so that the setup can be used to test power electronics and motor control...
  3. Teensy 4.0 - falling edge interrupt keeps triggering when there is no falling edge

    I am using the Teensy 4.0 - pin 5 as the "busy" edge detector for an external ADC. After a conversion start, the external ADC applies a "BUSY" pulse, and on the falling edge of this busy pulse, that...
  4. Thank you ALL - these code snippets and...

    Thank you ALL - these code snippets and suggestions are a BIG help, I will try them shortly!
  5. Reading multiple GPIO pins on the Teensy 4.0 "atomically"

    I plan on using a 16 bit parallel ADC with the Teensy4.0. Currently, I only know how to read each of the 16 pins individually:

    //ADC bit 0 (LSB) //bit 1 ...
  6. Thank you manitou and KurtE! I will try the asm...

    Thank you manitou and KurtE! I will try the asm command soon.
    --> The reason that I disable interrupts inside the interrupt routine is because of what manitou said in his last post: I'm using the...
  7. Greetings All - I certainly appreciate your...

    Greetings All - I certainly appreciate your ongoing help with this issue!

    Okay, I switched to SPI mode0, and got the following result (still too many packets being transmitted):
    17809

    The...
  8. Greetings All - thank you for your help! To...

    Greetings All - thank you for your help!

    To answer the suggestions so far:

    1. adding the digitalPinToInterrupt did not seem to make any difference
    2. I'm using a Teensy 4.0 with Arduino 1.8.9,...
  9. Thread: Teensy 4.0 and SPI - problems with number of transactions in an interrupt rou

    [Reposted from General forum - this is a technical support question]
    Greetings All!

    I'm using the Teensy 4.0 with an external ADC (the ADS8861, which is a 16 bit, SPI output ADC). I'm in the...
  10. Teensy 4.0 and SPI - problems with number of transactions in an interrupt routine

    Greetings All!

    I'm using the Teensy 4.0 with an external ADC (the ADS8861, which is a 16 bit, SPI output ADC). I'm in the testing phase, and I'm getting erroneous outputs on the SPI data and...
  11. Using the Audio System Design Tool for Teensy 4.0

    Greetings All!

    I just became aware of the great node-red like Audio System Design Tool (ASDT) for Teensy: https://www.pjrc.com/teensy/gui/
    This looks like a GREAT tool! I have used Node Red...
  12. Replies
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    Greetings! I just installed the latest...

    Greetings!

    I just installed the latest Teensyduino installer, and after running it, I only see up to Teensy 3.6 available for board selection in the Arduino IDE (ver 1.8.9). Will the Teensy 4.0...
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