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Pin numbers and values can often be stored in bit vectors. This is particularly useful for GPIO expanders where pin numbers are sequential where bit masks can ease storage of state and allow convertin…
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```
/sys/class/gpio/export：Invalid argument
GPIO pin 17 does not seem to be available on your platform
RuntimeException: /sys/class/gpio/export: Invalid argument
RuntimeException: /sys/class/gpio/…
falue updated
7 months ago
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Use an interrupt on a GPIO pin to increase a uint32_t counter.
Exact goal with this data TBD (and defined in another task).
#### Potential goals:
* Use it to re-set the sync time once-per-secon…
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# Please answer the following:
**FPP Version and Hardware**:
FPP 6.3 running on RPI Zero 2 W and RPI 4
**Describe the bug and Steps to reproduce**:
I'm using the pca9554A gpio extender chip …
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I have tried setting my parameters like so for my raspberry pi zero 2 w running retropie and my generic ili9341 display (https://www.amazon.ca/Module-daffichage-ILI9341-fonction-tactile/dp/B07BDML7LM/…
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Using 38-27 for a 4x4 keypad, but they dont seem to work as generic ESP32 GPIOS
Using "Keypad" library
Same code works fine with DEVKIT V1 and NODEMCU 32S
```
const byte rows = 4; //four rows
con…
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Add parameter in command line tools.
F5OEO updated
3 years ago
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Every GPIO pin can generate an interrupt with number 40 + GPIO pin number.
But the init code set the max value to 48 - irq.h - "#define NR_IRQS 48"
Thus GPIO(1) to GPIO(8) only.
Please inc…
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hi.... I have an problem in interfacing sonar sensor with Raspberry pi 3 model B....The motor hat blocks all the GPIO pins.... what is the best way for connecting sonar sensor....
regards,
Ganesh
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The `wiringPiISR()` routine from the `wiringPi.so` library tries to invoke the `gpio` program from its own package.
To overcome this I cloned the wiringPi repository, then
1. compiled the `gpio` p…