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# max31855
Driver for [MAX31855 thermocouple converter](https://www.analog.com/en/products/max31855.html) using traits from `embedded-hal`.
[](https://crates.io/crates/max31855)
[](https://docs.rs/max31855)
## Features
* Read thermocouple temperature
* Read internal reference junction temperature
* Read fault data (missing thermocouple, short to ground or short to vcc)
* Supports 16-bit (thermocouple + fault only) or 32-bit (thermocouple, internal and full fault details)
* Supports Celsius, Fahrenheit or Kelvin units
* Supports returning raw (ADC count) readings
## Example:
```
let freq: Hertz = 4.mhz().into();
let mode = Mode {
polarity: Polarity::IdleLow,
phase: Phase::CaptureOnFirstTransition
};
let mut spi = Spi::spi2(
device.SPI2,
(sck_pin, miso_pin, mosi_pin)
mode,
freq,
clocks,
&mut rcc.apb1
);
// Full 32-bit read, result contains both thermocouple and internal temperatures
match spi.read_all(&mut cs_pin, Unit::Celsius) {
Ok(v) => info!("Ok: {:?}", v),
Err(e) => info!("Err: {:?}", e),
}
// Just thermocouple 16-bit read
match spi.read_thermocouple(&mut cs_pin, Unit::Celsius) {
Ok(v) => info!("Ok: {:?}", v),
Err(e) => info!("Err: {:?}", e),
}
```
Free and open source software distributed under the terms of both the [MIT License][lm] and the [Apache License 2.0][la].
[lm]: LICENSE-MIT
[la]: LICENSE-APACHE
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