GY-63_MS5611/libraries/AD5246
2023-12-06 15:53:56 +01:00
..
.github 0.1.0 AD5246 2023-08-02 11:27:59 +02:00
examples 0.2.0 AD5246 2023-12-06 15:53:56 +01:00
test 0.1.0 AD5246 2023-08-02 11:27:59 +02:00
.arduino-ci.yml 0.1.0 AD5246 2023-08-02 11:27:59 +02:00
AD5246.cpp 0.2.0 AD5246 2023-12-06 15:53:56 +01:00
AD5246.h 0.2.0 AD5246 2023-12-06 15:53:56 +01:00
CHANGELOG.md 0.2.0 AD5246 2023-12-06 15:53:56 +01:00
keywords.txt 0.1.0 AD5246 2023-08-02 11:27:59 +02:00
library.json 0.2.0 AD5246 2023-12-06 15:53:56 +01:00
library.properties 0.2.0 AD5246 2023-12-06 15:53:56 +01:00
LICENSE 0.1.0 AD5246 2023-08-02 11:27:59 +02:00
README.md 0.2.0 AD5246 2023-12-06 15:53:56 +01:00

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License: MIT GitHub release PlatformIO Registry

AD5246

Arduino library for I2C single channel digital rheostat AD5246.

The library is experimental and not tested with hardware yet.

Description

The AD5246 is a single channel digital rheostat which comes in 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ and can be set in 128 steps.

Indicative step size.

value step size
5 kΩ 39.06 Ω
10 kΩ 78.13 Ω
50 kΩ 390.6 Ω
100 kΩ 781.3 Ω

An important property is that the device defaults to the mid-scale position at startup. One can use AD5246_MIDPOINT == 64 to reset to the mid-scale position.

0.2.0 Breaking change

Version 0.2.0 introduced a breaking change. You cannot set the pins in begin() any more. This reduces the dependency of processor dependent Wire implementations. The user has to call Wire.begin() and can optionally set the Wire pins before calling begin().

This library is based upon the AD5245 library.

I2C address

The AD5246 has one fixed address 0x2E. If one needs more AD5426 on one I2C bus one need a I2C multiplexer

The maximum I2C speed is 400 KHz.

Interface

#include AD5246.h"

The library has a number of functions which are all quite straightforward. One can get / set the value of the rheostat.

  • AD5246(TwoWire *wire = &Wire) constructor
  • bool begin() for UNO.
  • bool isConnected() See if address set in constructor is on the bus.
  • uint8_t reset() sets rheostat to midpoint = 64. (startup default)
  • uint8_t write(uint8_t value) set to value 0 .. 127. Values > 127 will be mapped upon 127.
  • uint8_t read() read value from cache.
  • uint8_t readDevice() read value from device.

Note the AD5426 does not have a shutdown() command like the AD5245.

Error codes

define value
AD5246_OK 0
AD5246_ERROR 100

Operation

The examples show the basic working of the functions.

Future

  • keep in sync with AD5245 library

Support

If you appreciate my libraries, you can support the development and maintenance. Improve the quality of the libraries by providing issues and Pull Requests, or donate through PayPal or GitHub sponsors.

Thank you,