This is a tool that displays a ascii-art 'map' of the current pinmux assignments on the GPIO header
To run the pin list tool you need to be in the tools directory, then run:
$ python3 list-pins.py MangoPi-MQ-Pro- The script requires root acces (via sudo) to read the pin maps.
- Running the script produces the same map I use in this documentation.
- The data used to assemble the
.gpiomap files identifies which interface a pin is attached to, but not it's specific function for the interface.- eg it can say 'pinX and pinY are mapped to UART2', but cannot identify which pin is the TX and which is the RX; a limitation of the data, my apologies..
- You therefore need to reference the D1 pin mapping table to get the exact functions for pins when running this for yourself.
This is the default output for the MQ-Pro with the default device tree:
MangoPI MQ Pro GPIO header (dtb name: MangoPi MQ Pro)
Gpio Header:
func des pin pin des func
3v3 1 --o o-- 2 5v
free (205) PG13 3 --o o-- 4 5v
free (204) PG12 5 --o o-- 6 gnd
free (39) PB7 7 --o o-- 8 PB8 uart0 (2500000.serial:40)
gnd 9 --o o-- 10 PB9 uart0 (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 free (33)
3v3 17 --o o-- 18 PD14 free (110)
free (108) PD12 19 --o o-- 20 gnd
free (109) PD13 21 --o o-- 22 PC1 free (65)
free (107) PD11 23 --o o-- 24 PD10 free (106)
gnd 25 --o o-- 26 PD15 free (111)
free (145) PE17 27 --o o-- 28 PE16 free (144)
free (42) PB10 29 --o o-- 30 gnd
free (43) PB11 31 --o o-- 32 PC0 free (64)
free (44) PB12 33 --o o-- 34 gnd
free (38) PB6 35 --o o-- 36 PB2 free (34)
free (113) PD17 37 --o o-- 38 PB3 free (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