mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-09-20 00:55:58 -04:00
142 lines
4.1 KiB
Markdown
142 lines
4.1 KiB
Markdown
|
|
[](https://github.com/marketplace/actions/arduino_ci)
|
|
[](https://github.com/RobTillaart/DAC8552/actions/workflows/arduino-lint.yml)
|
|
[](https://github.com/RobTillaart/DAC8552/actions/workflows/jsoncheck.yml)
|
|
[](https://github.com/RobTillaart/DAC8552/issues)
|
|
|
|
[](https://github.com/RobTillaart/DAC8552/blob/master/LICENSE)
|
|
[](https://github.com/RobTillaart/DAC8552/releases)
|
|
[](https://registry.platformio.org/libraries/robtillaart/DAC8552)
|
|
|
|
|
|
# DAC8552
|
|
|
|
Arduino library for DAC8552 SPI Digital Analog Convertor.
|
|
|
|
|
|
## Description
|
|
|
|
The DAC8552 is a SPI based 16 bit DAC with two channels.
|
|
|
|
**Warning** This library is not tested extensively.
|
|
|
|
|
|
#### 0.4.0 Breaking change
|
|
|
|
Bugfix channel select bit, invalidates all pre 0.4.0 versions
|
|
|
|
|
|
#### 0.3.0 Breaking change
|
|
|
|
The version 0.3.0 has breaking changes in the interface.
|
|
The essence is removal of ESP32 specific code from the library.
|
|
This makes it possible to support the ESP32-S3 and other processors in the future.
|
|
Also it makes the library a bit simpler to maintain.
|
|
|
|
Note order of parameters changed.
|
|
|
|
|
|
#### Related
|
|
|
|
- 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)
|
|
|
|
|
|
## Interface
|
|
|
|
```cpp
|
|
#include "DAC8552.h"
|
|
```
|
|
|
|
### Core
|
|
|
|
- **DAC8552(uint8_t select, SPIClassRP2040 \* spi = &SPI)** Constructor HW SPI RP2040.
|
|
- **DAC8552(uint8_t select, SPIClass \* spi = &SPI)** Constructor HW SPI other.
|
|
- **DAC8552(uint8_t select, uint8_t spiData, uint8_t spiClock)** Constructor SW SPI.
|
|
- **DAC8532(...)** idem constructors for DAC8532.
|
|
- **void begin()** initializes all pins to default state
|
|
- **void bufferValue(uint8_t channel, uint16_t value)**
|
|
- **void setValue(uint8_t channel, uint16_t value)** set the value of the chosen channel to 0 - 65535
|
|
- **uint16_t getValue(uint8_t channel)**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.
|
|
|
|
|
|
### Power down
|
|
|
|
Check datasheet for details.
|
|
|
|
- **void bufferPowerDown(uint8_t channel, uint8_t powerDownMode)** ets power down mode. 0 - 3,
|
|
but waits until (TODO CHECK DATASHEET)
|
|
- **void setPowerDown(uint8_t channel, uint8_t powerDownMode)** sets power down mode. 0 - 3.
|
|
- **uint8_t getPowerDownMode(uint8_t channel)** returns last written mode.
|
|
|
|
| Power down mode | Value |
|
|
|:---------------------------|:-----:|
|
|
| DAC8552_POWERDOWN_NORMAL | 0 |
|
|
| DAC8552_POWERDOWN_1K | 1 |
|
|
| DAC8552_POWERDOWN_100K | 2 |
|
|
| DAC8552_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_same_time_write.ino**
|
|
- writes two square waves that trigger at the same time
|
|
|
|
**demo_sequential_write.ino**
|
|
- writes two square waves sequentially (slight time difference)
|
|
|
|
**demo_powerdown.ino**
|
|
- idem
|
|
|
|
|
|
## Future
|
|
|
|
#### Must
|
|
|
|
- improve documentation
|
|
- testing with hardware
|
|
|
|
|
|
#### Should
|
|
|
|
#### Could
|
|
|
|
- performance measurements
|
|
|
|
|
|
#### 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,
|
|
|