mirror of
https://github.com/RobTillaart/Arduino.git
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82 lines
2.5 KiB
Markdown
82 lines
2.5 KiB
Markdown
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[](https://github.com/marketplace/actions/arduino_ci)
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[](https://github.com/RobTillaart/ADG725/actions/workflows/arduino-lint.yml)
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[](https://github.com/RobTillaart/ADG725/actions/workflows/jsoncheck.yml)
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[](https://github.com/RobTillaart/ADG725/blob/master/LICENSE)
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[](https://github.com/RobTillaart/ADG725/releases)
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# ADG725
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Arduino library for ADG725 - 16 to 1 channel (2x) multiplexer.
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## Description
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**Experimental**
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ADG725 is an Arduino class that controls two 16 to 1 multiplexers
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over a SPI like interface.
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Only one of the 16 channels can be connected at the same time.
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The channels can be set per multiplexer or together in one call.
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The library also support to set them all off (17th state).
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On power-up, all switches are in the OFF state.
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This library can be used e.g. to connect 16 analog devices to
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one analog port, or to select between 16 DHT22 sensors.
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Not tests with hardware have been done yet, so use with care.
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Feedback welcome!
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TODO insert picture.
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#### Related
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- https://github.com/RobTillaart/HC4051 (1x8 mux)
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- https://github.com/RobTillaart/HC4052 (2x8 mux)
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- https://github.com/RobTillaart/HC4053 (3x2 mux)
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- https://github.com/RobTillaart/HC4067 (1x16 mux)
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- https://github.com/RobTillaart/ADG725 (2x16 mux)
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- https://github.com/RobTillaart/ADG731 (1x32 mux)
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## Interface
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```cpp
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#include "ADG725.h"
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```
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- **ADG725(uint8_t clockPin, uint8_t dataPin, uint8_t syncPin)** constructor.
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- **void setChannel(uint8_t channel)** set the current channel for both A and B.
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Valid values for channel are 0..15.
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- **void setChannelA(uint8_t channel)** set the current channel for A only.
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Valid values for channel are 0..15.
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- **void setChannelB(uint8_t channel)** set the current channel for B only.
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Valid values for channel are 0..15.
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- **uint8_t getChannelA()** get last set channel A == 0..15 or ADG725_ALLOFF.
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- **uint8_t getChannelB()** get last set channel B == 0..15 or ADG725_ALLOFF.
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- **uint8_t channelCount()** returns 16 for ADG725.
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## Future
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#### Must
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- improve documentation
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- test with hardware
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#### Should
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- add examples
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- check performance
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#### Could
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#### Wont
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