Olimex ESP32 EVB board - thilo-hub/Lua-RTOS-ESP32 GitHub Wiki
CAN:
| Signal | GPIO |
|---|---|
| TX | GPIO5 |
| RX | GPIO35 |
Ethernet (RMII interface):
| Signal | GPIO |
|---|---|
| EMAC_TXD0 | GPIO19 |
| EMAC_TXD1 | GPIO22 |
| EMAC_TX_EN | GPIO21 |
| EMAC_RXD0 | GPIO25 |
| EMAC_RXD1 | GPIO26 |
| EMAC_RX_CRS_DV | GPIO27 |
| CLKIN | GPIO 0 |
| MDC | GPIO23 |
| MDIO | GPIO18 |
PHY is LAN8720 at address 0. Power GPIO is not used.
SD Card (MMC interface):
| Signal | GPIO |
|---|---|
| CD/DAT3/CS | Not used |
| CMD/DI | GPIO15 |
| CLK/SCLK | GPIO14 |
| DAT0/DO | GPIO2 |
| DAT1/RES | Not used |
| DAT2/RES | Not used |
UART:
| Unit | Signal | GPIO | Notes |
|---|---|---|---|
| 0 | RX | GPIO3 | |
| TX | GPIO1 | ||
| 1 | RX | GPIO4 | Mapped to UEXT connector |
| TX | GPIO36 | Mapped to UEXT connector | |
| 2 | RX | ||
| TX |
SPI:
| Unit | Signal | GPIO | Notes |
|---|---|---|---|
| 2 | MISO | GPIO15 | Mapped to UEXT connector |
| MOSI | GPIO2 | Mapped to UEXT connector | |
| CLK | GPIO14 | Mapped to UEXT connector | |
| CS | GPIO17 | Mapped to UEXT connector | |
| 3 | MISO | ||
| MOSI | |||
| CLK | |||
| CS |
I2C:
| Unit | Signal | GPIO | Notes |
|---|---|---|---|
| 0 | SDA | GPIO13 | Mapped to UEXT connector |
| SCL | GPIO16 | Mapped to UEXT connector | |
| 1 | SDA | GPIO13 | |
| SCL | GPIO16 |