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PI4IOE5V I2C GPIO Expander component for ESP-IDF
readme
# PI4IOE5V I2C GPIO Expander
[](https://components.espressif.com/components/espp/pi4ioe5v)
The `Pi4ioe5v` component provides configuration and GPIO control for the
PI4IOE5Vxxxx family of I2C expanders. It derives from `espp::BasePeripheral`
and exposes simple helpers for direction, output, input, polarity inversion,
and pull configuration.
## Example
Use with `espp::I2c` via bound callbacks:
```cpp
//! [pi4ioe5v_example]
espp::I2c i2c({...});
espp::Pi4ioe5v exp({
.device_address = espp::Pi4ioe5v::DEFAULT_ADDRESS,
.direction_mask = 0x00, // all outputs on single 8-bit port
.write = std::bind(&espp::I2c::write, &i2c, std::placeholders::_1,
std::placeholders::_2, std::placeholders::_3),
.read_register = std::bind(&espp::I2c::read_at_register, &i2c,
std::placeholders::_1, std::placeholders::_2,
std::placeholders::_3, std::placeholders::_4),
.write_then_read = std::bind(&espp::I2c::write_read, &i2c, std::placeholders::_1,
std::placeholders::_2, std::placeholders::_3,
std::placeholders::_4, std::placeholders::_5),
});
//! [pi4ioe5v_example]
```
Links
- Homepage
- Documentation
-
Repository
6b9c84fc1a7f355784bd1c94c9348b8a45775142
Supports all targets
Maintainer
- William Emfinger <waemfinger@gmail.com>
License: MIT
To add this component to your project, run:
or
download archive
idf.py add-dependency "espp/pi4ioe5v^1.0.19"
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