Can nRF52840 USBD read and wrire data usb2.0 fullspeed from SD Card

Question

Dear team: 
 Can nRF52840 USBD read and wrire data usb2.0 fullspeed from SD Card ,If so ,pls release the source code

Øyvind · Accepted Answer

Ok, I see. Then I suggest testing with the SD Card Example . In your sdk_config.h (examples\peripheral\fatfs\pca10056\blank\config\sdk_config.h) you can configure: // APP_SDCARD_FREQ_INIT - SPI frequency // <33554432=> 125 kHz // <67108864=> 250 kHz // <134217728=> 500 kHz // <268435456=> 1 MHz // <536870912=> 2 MHz // <1073741824=> 4 MHz // <2147483648=> 8 MHz #ifndef APP_SDCARD_FREQ_INIT #define APP_SDCARD_FREQ_INIT 67108864 #endif // APP_SDCARD_FREQ_DATA - SPI frequency // <33554432=> 125 kHz // <67108864=> 250 kHz // <134217728=> 500 kHz // <268435456=> 1 MHz // <536870912=> 2 MHz // <1073741824=> 4 MHz // <2147483648=> 8 MHz #ifndef APP_SDCARD_FREQ_DATA #define APP_SDCARD_FREQ_DATA 1073741824 #endif Note that FREQ_INIT should not exceed 250kHz during an initialization process. See SD Card library for more information.

Wwing · Answer

Ok, i got it. thanks a lot!

Can nRF52840 USBD read and wrire data usb2.0 fullspeed from SD Card

Top Replies