Crates.io | ads129xx |
lib.rs | ads129xx |
version | 0.2.1 |
source | src |
created_at | 2019-10-25 13:10:20.897714 |
updated_at | 2020-01-30 09:25:40.501989 |
description | Driver crate for the Texas Instruments ADS1292 24-bit 2-channel low-power analog front end for ECG applications. |
homepage | |
repository | https://github.com/tweedegolf/ads129xx |
max_upload_size | |
id | 175606 |
size | 32,985 |
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.
Contributions welcome!
// 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)
while !data_ready() {}
// 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();
ads1292.cmd(Command::START)?;
ads1292.write_register(Register::CONFIG1, 0b001)?;
let lead_off_status = ads1292.read_register(Register::LOFF_STAT)?;
let data = ads1292.read_data()?;
// Opens stream, sends RDATAC command to ads
let data_stream = ads1292.into_data_stream()?;
let mut buf = [[Ads1292Data::default(); 2]; 2000];
for i in buf.iter_mut() {
while !data_ready() {}
*i = data_stream.next().unwrap().unwrap();
}
// Don't forget to close; this will send the SDATAC command to the ads
data_stream.into_inner();