Teensy 3.6 SD Card IO
- Thread starter Major7
- Start date
- Status
MichaelMeissner
Senior Member+
It's in hardware/teensy/avr/libraries/SD/utility/Sd2Card.h. And that is included by libraries/SD/src/utility/SdFat.h.
The value is 254, but it isn't a real pin. I believe all of the uses in the SD library check for that value, and then call other functions instead of doing the standard SPI transfer.
The value is 254, but it isn't a real pin. I believe all of the uses in the SD library check for that value, and then call other functions instead of doing the standard SPI transfer.
defragster
Senior Member+
Glad the good answer from @MichaelMeissner got that fixed.
The only thing I'd add is that the T_3.5 and 3.6 onboard SD card socket are connected to dedicated pins independant from any other pin or bus, so that value "chipSelect = BUILTIN_SDCARD" tells the software to use that hardwired interface for access.
The only thing I'd add is that the T_3.5 and 3.6 onboard SD card socket are connected to dedicated pins independant from any other pin or bus, so that value "chipSelect = BUILTIN_SDCARD" tells the software to use that hardwired interface for access.
Last edited:
- Status