5.2 Using SPI Interface via Jumper Wires

The following hardware (wire jumpers of equal length) rework must be done in the WILCS02-SD board to use the SPI interface rather than the SDIO interface.

Note: The rework below is suggested when the WILCS02-SD board is with default SDIO configuration.

1. Remove resistor R111 and solder the fly wire from the pad of R111 (Highlighted in the below image) to the SPI_CS of the host board.
2. Remove resistor R110 and solder the fly wire from the pad of R110 (Highlighted in the below image) to the SPI_RXD of the host board.
3. Remove resistor R105 and solder the fly wire from the pad of R105 (Highlighted in the below image) to the SPI CLK of the host board.
4. Remove resistor R113 and solder the fly wire from the pad of R113 (Highlighted in the below image) to the SPI_TXD of the host board.
   Note: It is recommended to use a short length of the fly wire for the SPI signal line connection.
5. Solder a jumper wire from TP107 or the pad of R116 (see the following figure) to connect it with the interrupt pin of the host board.
6. Use jumper wires to connect MCLR from J207 to the corresponding pin of the host board.

7. Solder the fly wire from R107 to the host board 3.3V supply pin to power on the WILCS02-SD board from the host board.

   Note: The user can power on the WILCS02-SD board using a USB Type C® cable as well.
8. Connect a jumper wire from J103 (Pin3) or J104 (Pin3) or solder the jumper wire at TP201 to the Ground of the host board.