SPI ，I2C接口
From ESS-WIKI
SPI (CN1)
RSB-4710 provides one SPI via a 6-pin wafer box.
| PIn | Description |
| 1 | +VCC_3V0 |
| 2 | SPI2_CSN0 |
| 3 | SPI2_CLK |
| 4 | SPI2_TXD |
| 5 | SPI2_RXD |
| 6 | GND |
I2C (CN2)
RSB-4710 provides one I2C via a 5-pin wafer box.
| Pin | Description |
| 1 | +3.3V |
| 2 | I2C4_SCL_CONN |
| 3 | I2C4_SDA_CONN |
| 4 | Touch_INT# |
| 5 | GND |
