evkbimxrt1050_sdcard_fatfs_freertos example from SDK 2.6.0, how to change to just use voltage 3.3v only?

[felix1]

Use SD card example from SDK 2.6.0, test 4 SD card in EVK (support 1.8v and 3.3v) are all pass. To test in my custom board (just support 3.3V) is one pass but three fail. They all fail in command 11, SDMMC_SwitchToVoltage() function. 

How can I fix this example to just support 3.3v?

[jorge_a_vazquez]

Hi Felix Shih

They are some SD cards that need to operate at 1.8V, so it doesn't depend on the SD module from the RT or the SD example, it is a standard requirement from the SDcards.

Have a great day,
TIC

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[felix1]

Finally, I modify enum _host_capability{...} of fsl_sdmmc_host.h to bypass switch voltage, and It seems ok.