Teensy 4.0 bootloader

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I would like to make my own board with mimxrt1062dvl6a because I need more GPIOs.

I would like to know if the MKL04 chip with pre-programmed bootloader(IC_MKL04Z32_TQFP32) works with teensy 4.0 Library.

Thank
 
No, that chip functionality is not yet released - there was a recent Post by Paul that it is on the horizon.
 
Get an MCP23S17? I have 128 gpios running on a T4, working on the SPI library I am working on, the board is from UK, for a rasbpi, but i wired it to work on Teensy, I might add event features for timed outputs

It has the ability to detect how many MCP23S17s are connected to the chipselect line and pin count them in series.
pinMode(127, OUTPUT) (chip 8, bank B, gpio 7)

1582705159294-1.jpg
 
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