Expand description
Driver crate for the Texas Instruments ADS1292 24-bit 2-channel low-power analog front end for ECG applications.
This initial version supports the ADS1292 (for the most part), but it’s a goal to support the ADS1291 and ADS1292R as well.
Usage:
// spi: spi interface
// ncs: not-Chip-Select pin
// timer: timer, 500kHz timeout.
let spi_device = SpiDevice::new(spi, ncs, timer)?;
let mut ads = Ads1292::init(spi_device)?;
// start conversions
ads.cmd(ads129xx::Command::START).unwrap();
ads.wait(200)?; // Wait a while in between sending commands
ads.cmd(ads129xx::Command::RDATAC).unwrap();
ads.wait(200)?;
let mut stream = ads.into_data_stream()?;
let mut buf = [[ChannelData::default(); 2]; 10];
// Opens stream, sends RDATAC command to ads
let data_stream = ads1292.into_data_stream()?;
ads.wait(200)?;
// A buffer to read data into
let mut buf = [[Ads1292Data::default(); 2]; 2000];
for i in buf.iter_mut() {
// some way of finding out NDRDY has been low since last read (preferably by an interrupt-set flag)
// data_stream always returns data (for now), so we can unwrap here
*i = data_stream.next().unwrap()?;
}
// Don't forget to close; this will send the SDATAC command to the ads
data_stream.into_inner();
Modules§
- Ads1292-specific code
- Data representation
- SPI interface
Structs§
- Configuration for the register that configures the power mode, PGA gain, and multiplexer settings channels.
- Configuration for the register that configures each ADC channel sample rate.
- Configuration for the register that configures the test signal, clock, reference and LOFF buffer.
- Configuration for the register that configures the lead-off detection operation.
- Configuration for the register that selects the positive and negative side from each channel for lead-off detection.
- Configuration for the register that controls the selection of the positive and negative signals from each channel for right leg drive derivation.
- Configuration for the register that controls the respiration and calibration functionality.
Enums§
- SPI commands
- Read / write-able registers
Traits§
- Represents any ADS129xx device