GY-63_MS5611/libraries/DAC8550

DAC8550 - experimental

Arduino library for DAC8550 SPI Digital Analog Convertor.

Description

The DAC8550 is a SPI based 16 bit DAC with one channel.

WARNING this library is not tested with real hardware yet. It is derived from the DAC8551 library.

Interface

#include "DAC8550"

Core

• DAC8550(uint8_t slaveSelect) Constructor for hardware SPI, the slaveSelect pin needs to be defined.
• DAC8550(uint8_t spiData, uint8_t spiClock, uint8_t slaveSelect) Constructor for the software SPI.
• void begin() initializes all pins to default state.
• void setValue(uint16_t value) set the value of the channel to 0 - 65535
• uint16_t getValue() returns the last value written.

Hardware SPI

To be used only if one needs a specific speed.

• void setSPIspeed(uint32_t speed) set SPI transfer rate.
• uint32_t getSPIspeed() returns SPI transfer rate.
• bool usesHWSPI() returns true if HW SPI is used.

ESP32 specific

• void selectHSPI() in case hardware SPI, the ESP32 has two options HSPI and VSPI.
• void selectVSPI() see above.
• bool usesHSPI() returns true if HSPI is used.
• bool usesVSPI() returns true if VSPI is used.

The selectVSPI() or the selectHSPI() needs to be called BEFORE the begin() function.

Experimental

• void setGPIOpins(uint8_t clk, uint8_t miso, uint8_t mosi, uint8_t select) overrule GPIO pins of ESP32 for hardware SPI. needs to be called AFTER the begin() function.

Power down

check datasheet for details.

• void setPowerDown(uint8_t powerDownMode) sets power down mode. 0 - 3.
• uint8_t getPowerDownMode() returns last written mode.

Power down mode	Value
DAC8550_POWERDOWN_NORMAL	0
DAC8550_POWERDOWN_1K	1
DAC8550_POWERDOWN_100K	2
DAC8550_POWERDOWN_HIGH_IMP	3

Operation

See examples

Future

Must

• improve documentation

Should

• testing with real hardware

Could

• improve code incl readability
  • spiData => spiDataOut

Wont

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,