mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-10-03 18:09:02 -04:00
1.7 KiB
1.7 KiB
DAC8551
Arduino library for DAC8551 SPI Digital Analog Convertor
Description
The DAC8551 is a SPI based 16 bit DAC with one channel.
Warning this library is not tested extensively
Interface
Core
- DAC8551(uint8_t slaveSelect) Constructor for hardware SPI, since 0.2.0 the slaveSelect pin needs to be defined.
- DAC8551(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.
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 |
|---|---|
| DAC8551_POWERDOWN_NORMAL | 0 |
| DAC8551_POWERDOWN_1K | 1 |
| DAC8551_POWERDOWN_100K | 2 |
| DAC8551_POWERDOWN_HIGH_IMP | 3 |
Operation
See examples
demo_hw_spi.ino
- write a sawtooth to channel A followed by a sinus
- uses HW SPI
demo_sw_spi.ino
- write a sawtooth to channel A followed by a sinus
- uses SW SPI
demo_powerdown.ino
- idem
TODO
more testing