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Type: Posts; User: morgoth90

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    Wow, that fixed the problem like black magic.

    Wow, that fixed the problem like black magic.
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    131

    Teensy 4.0 spi sck interference

    Using a teensy 4 I have tested a breadboard circuit with 3 spi slaves and replicated the connections on a perfboard.
    On the breadboard everithing works as supposed but on the perfboard something is...
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    With the GettingStarted example the led remain...

    With the GettingStarted example the led remain off.

    I think I've found the cause, in the RF24 lib these lines dows not enable spi transactions


    #if defined (SPI_HAS_TRANSACTION) && !defined...
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    The strange fact is that with other spi boards...

    The strange fact is that with other spi boards like the sd or the 1.8 tft display everything is working and the pin 13s led is blinking.
    Blink that never happens with the nRF24L01
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    Looking into the library code I found this ...

    Looking into the library code I found this


    _SPI.setBitOrder(MSBFIRST);
    _SPI.setDataMode(SPI_MODE0);
    #if !defined(F_CPU) || F_CPU < 20000000
    _SPI.setClockDivider(SPI_CLOCK_DIV2);
    #elif F_CPU...
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    just tried without the adapter module and I'm...

    just tried without the adapter module and I'm having the same comportment

    EDIT: same with another nRF24L01+ board
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    Teensy 4.0 nRF24L01+ stuck on begin()

    I have a nRF24L01+ with an adapter module like this one (https://www.addicore.com/1x-nRF24L01-Adapter-p/ad279.htm)
    The pins are connected:


    When I try to call radio.begin() the Teensy freeze, in...
  8. Yes, I did that once during the test. I ordered...

    Yes, I did that once during the test.
    I ordered a new Teensy 4.0 :p

    By the way, on other pins and commenting the line

    //write8(BNO055_SYS_TRIGGER_ADDR, 0x20);
    works for me too
  9. If i move sda to pin 17, scl to pin16 and use...

    If i move sda to pin 17, scl to pin16 and use Wire1 into the i2c scanner the board detect it:


    its possible that pins 19 and 18 are broken or can be a software problem?

    EDIT:
    I've tried this...
  10. In the documentation is specified that bno055's...

    In the documentation is specified that bno055's sda and and scl already have a 20k pullup (https://learn.adafruit.com/adafruit-bno055-absolute-orientation-sensor/pinouts) :(
  11. Teensy 4.0 Adafruit_BNO055 cant find i2c device

    I'm trying the Adafruit_BNO055 with the new Teensy 4.0 using the example sketch:

    #include <Wire.h>
    #include <Adafruit_Sensor.h>
    #include <Adafruit_BNO055.h>
    #include <utility/imumaths.h>
    ...
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