Transfer these files (via SD card, or via ethernet) to the other board. Then use "flashcp" command to copy file to corresponding /dev/mtdX partition. The flashcp tool takes care of erasing, writing, and verifying the flash. It will be connected to qspi controller like single spi flash memory. That won't work. The QSPI controller is not a general-purpose SPI peripheral; it can only be used for devices which conform to a particular serial flash protocol. SD cards are not such a device. If your image data does not fit into main memory, consider adding SDRAM to your Multi I/O SPI are capable of supporting increased throughput from a single device. SPI itself is full-duplex. Dual and Quad SPI are both half-duplex due to using 2-4 pins to send and receive. Switching to Dual or Quad SPI is done via sending a command byte while in Single SPI. The command byte will request a response in either dual or quad mode. Other types of flash memory include NOR flash and Vertical NAND flash. The NAND flash is the non-volatile storage where all of the data on the SD card is stored, while the flash controller provides an interface to the NAND flash in the form of the data pins on the SD card. Internals of an SD card. Source: Engineers Garage Micro SD : Removable (UHS-I) SPI : On-board (NOR, 8MiB) ODROID-N2 has “Boot Select Switch” which is to select SPI flash memory as the primary boot device or not. If the switch nob is located to “SPI”, then CPU will fetch the bootloader from SPI flash memory. On the other hand, when the switch nob is placed to “MMC”, the bootloader Circuit and Interfacing. SD card has a native host interface apart from the SPI mode for communicating with master devices. The native interface uses four lines for data transfer where the microcontroller has SD card controller module and it needs separate license to use it. Since the SPI is a widely used protocol and it is available in most hYkwJ.

spi flash vs sd card