mirror of
https://github.com/easytarget/MQ-Pro-IO.git
synced 2025-09-11 17:55:52 +01:00
520118f143
Improve support for custom device trees when kernel updates are received * Modified make-trees.sh so that it builds for all installed kernels. * A new script flash-latest.sh that copies the resulting .dtb files into the /etc/flash-kernel/dtbs/ override folder. The build-trees README is updated for this, and shows how to configure flash-kernel to use the custom .dtbs. Kernel upgrade should now go: [after a new kernel upgrade is installed] * Upgrade source: cd source && apt source linux-riscv * Build dtb's: cd build-trees &&; ./make_dtbs.sh * Install device tree via softlinks ./flash_latest.sh * Reboot
50 lines
3.0 KiB
Markdown
50 lines
3.0 KiB
Markdown
## `list-pins.py`
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This is a tool that displays a ascii-art 'map' of the current pinmux assignments on the GPIO header
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To run the pin list tool you need to be in the tools directory, then run:
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```console
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$ python3 list-pins.py MangoPi-MQ-Pro
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```
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* The script requires root acces (via sudo) to read the pin maps.
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* Running the script produces the same map I use in this documentation.
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* The data used to assemble the `.gpio` map files identifies which interface a pin is attached to, but not it's specific function for the interface.
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* 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..
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* You therefore need to reference the [D1 pin mapping table](../reference/d1-pins.pdf) to get the exact functions for pins when running this for yourself.
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### Default output
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This is the default output for the MQ-Pro with the default device tree:
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```
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MangoPI MQ Pro GPIO header (dtb name: MangoPi MQ Pro)
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Gpio Header:
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func des pin pin des func
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3v3 1 --o o-- 2 5v
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free (205) PG13 3 --o o-- 4 5v
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free (204) PG12 5 --o o-- 6 gnd
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free (39) PB7 7 --o o-- 8 PB8 uart0 (2500000.serial:40)
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gnd 9 --o o-- 10 PB9 uart0 (2500000.serial:41)
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free (117) PD21 11 --o o-- 12 PB5 free (37)
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free (118) PD22 13 --o o-- 14 gnd
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free (32) PB0 15 --o o-- 16 PB1 free (33)
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3v3 17 --o o-- 18 PD14 free (110)
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free (108) PD12 19 --o o-- 20 gnd
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free (109) PD13 21 --o o-- 22 PC1 free (65)
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free (107) PD11 23 --o o-- 24 PD10 free (106)
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gnd 25 --o o-- 26 PD15 free (111)
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free (145) PE17 27 --o o-- 28 PE16 free (144)
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free (42) PB10 29 --o o-- 30 gnd
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free (43) PB11 31 --o o-- 32 PC0 free (64)
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free (44) PB12 33 --o o-- 34 gnd
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free (38) PB6 35 --o o-- 36 PB2 free (34)
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free (113) PD17 37 --o o-- 38 PB3 free (35)
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gnd 39 --o o-- 40 PB4 free (36)
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Other gpio outputs of interest:
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-- PD18: Blue Status Led - gpio (2000000.pinctrl:114)
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Notes:
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- I2C pins 3,5,27 and 28 (PG13, PG12, PE17 and PE16) have 10K pullup resistors to 3v3
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- The Status LED (PD18) is common with the LED_PWM pin on the DSI/LVDS output
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```
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