We are evaluating W5500 as an option for adding Ethernet Capabilities to Nordic’s NRF52840 Chip.
We are planning to connect W5500 to CPU over SPI, so can support BLE < – > TCP in our product.
We came across the following blog : https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/wiznets-ble-to-tcp-gateway
In the above example, W5500 is being used with SD\MMC.
My questions are :
What is the SD\MMC used for ?
Do I need to add SD\MMC to my PCB design as well ?
Note that on the NRF52x I am planning to run the code from git hub ( https://github.com/hooni1020/BLE_to_TCP_W5500_Shield/tree/master/examples/ble_central/ble_uart_c_to_tcpc/Wiznet )
Is this code applicable to NRF52840 ? ( example is on NRF52832 )
Can it be used with nrf 15.3 SDK ?