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@ -85,37 +85,6 @@ The MQ Pro uses several of the **D1**s interfaces on-board, specifically:
`SPI0` is mapped to the optional SPI flash chip (not fitted on consumer units)
## Default MQ-Pro mappings?
The mapping as described in the schematics; showing the specific GPIO pin assignments envisioned by MangoPI on the MQ Pro GPIO connector.
**Not what you get by default with Ubuntu**
```text
3v3 - 1 o o 2 - 5v
i2c0 SDA PG13 -- 3 o o 4 - 5v
i2c0 SDL PG12 -- 5 o o 6 - GND
PB7 -- 7 o o 8 -- PB8 uart0 TX
GND - 9 o o 10 -- PB9 uart0 RX
PD21 -- 11 o o 12 -- PB5 i2s CLK [pwm0]
PD22 -- 13 o o 14 - GND
[pwm3] PB0 -- 15 o o 16 -- PB1 [pwm4]
3v3 - 17 o o 18 -- PD14 spi1 HOLD
spi1 MOSI PD12 -- 19 o o 20 - GND
spi1 MISO PD13 -- 21 o o 22 -- PC1 uart2 RX
spi1 SCLK PD11 -- 23 o o 24 -- PD10 spi1 CS
GND - 25 o o 26 -- PD15 spi1 WS
i2c3 SDA PE17 -- 27 o o 28 -- PE16 i2c3 SCL
PB10 -- 29 o o 30 - GND
PB11 -- 31 o o 32 -- PC0 uart2 TX
PB12 -- 33 o o 34 - GND
[pwm1] i2s FS PB6 -- 35 o o 36 -- PB2
PD17 -- 37 o o 38 -- PB3 i2s DI0
GND - 39 o o 40 -- PB4 i2s DO
Notes:
- I2C pins 2,5,27 and 28 (PG13, PG12, PE17 and PE16) have 10K pullup resistors to 3v3
- The onboard blue status LED is on `PD18` [pwm2]
```
### Pin Mapping Example; UART pins:
The D1 has 6 internal UARTs, and many pin mappings are possible on the GPIO connector:
```text