SD Card Hangs With Shared SPI Pins

[petersanch]

I want to connect a SD card on VSPI and also connect a LCD on the same pin for MISO, MOSI, SCK. The 2 CS pins are connected on different ESP pins so that I can control which device the SPI is talking to.

The SD card example included with the ESP32 core hangs after LCD commands.

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cardSize = SD.cardSize() / (1024 * 1024);//works
exampleLCD();//works
writeFile(SD, "/hello.txt", "Hello ");//hangs

In writeFile, it hangs on

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File file = fs.open(path, FILE_WRITE);

What can be causing this? Does VSPI need to be reinitialized after the LCD uses it?

Cheers

[petersanch]

Scope shows there is no activity on SCK during the hang.
Is it maybe something in the "fs" library?