Arduino library for I2C DAC53001 10 bit DAC.

Experimental + Work in progress

Function names / API still can change.

Warning: This library is not tested with hardware yet. So use with care, feedback welcome.

The DAC63001, DAC63002, DAC53001, and DAC53002 are a pin-compatible DACs. They are low power, support voltage- and current-output, see table below.

TODO elaborate

If you have a DAC53001 or compatible device, please let me know your experiences with the sensor and this (or other) libraries.

• https://github.com/RobTillaart/DAC8550
• https://github.com/RobTillaart/DAC8551
• https://github.com/RobTillaart/DAC8552
• https://github.com/RobTillaart/DAC8554
• https://github.com/RobTillaart/MCP_DAC
• https://github.com/RobTillaart/AD5680 (18 bit DAC)

There are more DAC libraries.

Supports up to 1 MHz. To be verified.

Sometimes you need to control more devices than possible with the default address range the device provides. This is possible with an I2C multiplexer e.g. TCA9548 which creates up to eight channels (think of it as I2C subnets) which can use the complete address range of the device.

Drawback of using a multiplexer is that it takes more administration in your code e.g. which device is on which channel. This will slow down the access, which must be taken into account when deciding which devices are on which channel. Also note that switching between channels will slow down other devices too if they are behind the multiplexer.

• https://github.com/RobTillaart/TCA9548

#include "DAC53001.h"

• DAC53001(uint8_t address, TwoWire * wire = &Wire) set address and I2C bus. 10 bit.
• DAC53002(uint8_t address, TwoWire * wire = &Wire) set address and I2C bus. 10 bit.
• DAC63001(uint8_t address, TwoWire * wire = &Wire) set address and I2C bus. 12 bit.
• DAC63002(uint8_t address, TwoWire * wire = &Wire) set address and I2C bus. 12 bit.
• bool begin() checks if address can be found on the I2C bus.
• bool isConnected() checks if address can be found on the I2C bus.
• uint8_t getAddress() returns address set.
• uint16_t getMaxValue() returns 1023 (10 bit) or 4095 (12 bit)
• uint8_t getChannels() returns 1 or 2

See datasheet page 58.

• void setReference(DACX300X_reference mode, uint8_t channel = 0)

See datasheet page 59.

• void setCurrentRange(uint8_t range, uint8_t channel = 0)
• uint8_t getCurrentRange(uint8_t channel = 0)

Note: three scales, in steps 1, 2, 5, 10.

See datasheet page 62.

• **void setOutputMode(uint8_t mode, uint8_t channel = 0);
• **uint8_t getOutputMode(uint8_t channel = 0);

Ω = ALt-234 (windows)

See datasheet page 62.

• uint16_t setDAC(uint16_t value, uint8_t channel = 0)
• uint16_t getDAC(uint8_t channel = 0)

See datasheet page 65.

• uint16_t getStatus() returns bit mask.
• uint16_t getDeviceID() idem.
• uint16_t getVersionID() return 0x00.

Meaning status bits:

• uint16_t lastError() returns last error and resets to OK.

To add table of error codes.

• improve documentation
• test with hardware

• replace magic numbers by defines (const int);
• enum for OUTPUTMODE? => difficult names
• add examples
• add more error handling
  • channel > # channels
  • incorrect mode
• isBusy(channel)?

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