Comments (9)
Sorry, I did not have Teensy 4.x board in hands. Do you know where can I get one? or any compatible board?
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I have just checked Teensy Teensyduino official library list: https://www.pjrc.com/teensy/td_libs.html
But it has not yet included Teensy 4.x, I will look forward what modification required from their official code sample.
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https://github.com/PaulStoffregen/cores
Paul is behind on updating some of the pages to reflect the Teensy 4.x. The latest libraries can be found at the GitHub link above.
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The only SPI display I can found is : https://github.com/PaulStoffregen/Adafruit_ST7735/blob/master/Adafruit_ST7735.cpp
And that example is using software SPI. If you can find an SPI display example using hardware SPI with Teensy, I may be can fix it.
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Where in that example does it say it is using SW SPI? There are references to both HW and SW SPI in that example but it looks like it uses HW SPI in the code:
#elif defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
if (_sid == (uint8_t)-1) _sid = 11;
if (_sclk == (uint8_t)-1) _sclk = 13;
if ( spi_pin_is_cs(_cs) && spi_pin_is_cs(_rs)
&& (_sid == 7 || _sid == 11)
&& (_sclk == 13 || _sclk == 14)
&& !(_cs == 2 && _rs == 10) && !(_rs == 2 && _cs == 10)
&& !(_cs == 6 && _rs == 9) && !(_rs == 6 && _cs == 9)
&& !(_cs == 20 && _rs == 23) && !(_rs == 20 && _cs == 23)
&& !(_cs == 21 && _rs == 22) && !(_rs == 21 && _cs == 22) ) {
hwSPI = true;
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From the file you linked above:
https://github.com/PaulStoffregen/Adafruit_ST7735/blob/master/Adafruit_ST7735.cpp
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Just added Teensy 4.x support, here are the demo video: https://youtu.be/dkhLGyGjbfo
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