WREN 12S ME SDK – GPIO Matrix
The WREN 12S ME SDK, Production PCA V1, has the below GPIO Matrix. This is used to assign required I/O matrix configurations, or template, within the WREN 12S ME SDK code.
Note: Some GPIO are used on the ESP-12S and the main Motor Controller are linked to the MCP23017 (I2C Expander) – as defined below.
For Tasmota users, please also refer to this page, for additional MCP23017 addressing information.
| GPIO | NET | Pin | Input | Output | Notes |
|---|---|---|---|---|---|
| /RST | /RST | 1 | Y Pull Up | CHIP_PU 10k to 3v3 | |
| ADC | DC_ADC | 2 | Y | ADC - Input Volt Sense 30V Potential Divider | |
| EN | EN | 3 | Y Pull Up | Pull Down To Disable. UART DTR | |
| 16 | /LBLUE | 4 | Y | Blue LED - Low for Active LED | |
| 14 | TP | 5 | |||
| 12 | /LGREEN | 6 | Y | Green LED - Low for Active LED | |
| 15 | TP | 7 | Y | Y | |
| VCC | 3V3 | 8 | |||
| GND | GND | 9 | |||
| 13 | IO_INT | 10 | Y Pull Up | MCP23017 INTB Out | |
| 2 | /LRED | 11 | Y | Red LED - Low for Active LED. via 100R | |
| 0 | GPIO0 | 12 | Y Pull Up | UART RTS | |
| 4 | SDA | 13 | I2C SDA | ||
| 5 | SCL | 14 | I2C SCL | ||
| RXD | RXD | 15 | UART RXD | ||
| TXD | TXD | 16 | UART TXD | ||
| GPA0 | EN_A | #21 D0 | sensor29 0 | MCP23017 - 0x20 | |
| GPA1 | OUT_1A | #22 D1 | sensor29 1 | MCP23017 - 0x20 | |
| GPA2 | OUT_2A | #23 D2 | sensor29 2 | MCP23017 - 0x20 | |
| GPA3 | EN_B | #24 D3 | sensor29 3 | MCP23017 - 0x20 | |
| GPA4 | OUT_1B | #25 D4 | sensor29 4 | MCP23017 - 0x20 | |
| GPA5 | OUT_2B | #26 D5 | sensor29 5 | MCP23017 - 0x20 | |
| GPB0 | IN_1A | #1 D8 | sensor29 8 | MCP23017 - INTB OUT - 0x20 | |
| GPB1 | IN_1B | #2 D9 | sensor29 9 | MCP23017 - INTB OUT - 0x20 | |
| GPB2 | IN_2A | #3 D10 | sensor29 10 | MCP23017 - INTB OUT - 0x20 | |
| GPB3 | IN_2B | #4 D11 | sensor29 11 | MCP23017 - INTB OUT - 0x20 | |
| GPB4 | /TALM | #5 D12 | sensor29 12 | MCP23017 - INTB OUT - 0x20 |