Designed to mimic the standard PI gpio assignments for use with Raspberry Pi HAT's
- i2c0 and spi1 ports are located on the same GPIO header pins as the Pi's I2C-1 and SPI-0
- i2c3 is on the same pins as I2C-0 on the Pi (This is normally reserved as the Pi EEPROM Data pins)
In addition it:
- Brings uart4 out on pins 36 and 38 (so I can leave the console free)
- Has 4 PWM channels for a RGB status led, and screen brightness
MangoPI MQ Pro GPIO header (dtb name: MangoPi MQ Pro)
Gpio Header:
func des pin pin des func
3v3 1 --o o-- 2 5v
i2c0.sda (2502000.i2c:205) PG13 3 --o o-- 4 5v
i2c0.scl (2502000.i2c:204) PG12 5 --o o-- 6 gnd
free (39) PB7 7 --o o-- 8 PB8 uart0.tx (2500000.serial:40)
gnd 9 --o o-- 10 PB9 uart0.rx (2500000.serial:41)
free (117) PD21 11 --o o-- 12 PB5 free (37)
free (118) PD22 13 --o o-- 14 gnd
free (32) PB0 15 --o o-- 16 PB1 pwm4 (2000c00.pwm:33)
3v3 17 --o o-- 18 PD14 spi1.hold (4026000.spi:110)
spi1.mosi (4026000.spi:108) PD12 19 --o o-- 20 gnd
spi1.miso (4026000.spi:109) PD13 21 --o o-- 22 PC1 free (65)
spi1.clk (4026000.spi:107) PD11 23 --o o-- 24 PD10 spi1.cs (4026000.spi:106)
gnd 25 --o o-- 26 PD15 spi1.wp (4026000.spi:111)
i2c3.sda (2502c00.i2c:145) PE17 27 --o o-- 28 PE16 i2c3.sck (2502c00.i2c:144)
free (42) PB10 29 --o o-- 30 gnd
pwm2 (2000c00.pwm:43) PB11 31 --o o-- 32 PC0 free (64)
pwm0 (2000c00.pwm:44) PB12 33 --o o-- 34 gnd
pwm1 (2000c00.pwm:38) PB6 35 --o o-- 36 PB2 uart4.tx (2501000.serial:34)
free (113) PD17 37 --o o-- 38 PB3 uart4.rx (2501000.serial:35)
gnd 39 --o o-- 40 PB4 free (36)
Other gpio outputs of interest:
-- PD18: Blue Status Led - gpio (2000000.pinctrl:114)
Notes:
- I2C pins 3,5,27 and 28 (PG13, PG12, PE17 and PE16) have 10K pullup resistors to 3v3
- The Status LED (PD18) is common with the LED_PWM pin on the DSI/LVDS output