2 releases (1 unstable)
1.0.0-rc.1 | Feb 2, 2024 |
---|---|
0.3.1 | Dec 20, 2023 |
#346 in Embedded development
32 downloads per month
16KB
114 lines
max6675-hal
An embedded-hal driver for the MAX6675 digital thermocouple converter.
Usage
This example code will change depending on which HAL device driver you're using. An arduino-hal
project's SPI isn't like that of an esp32-hal
project.
However, you only have to focus on using a device with an exposed SPI interface.
Your SPI settings should use MSB (most significant bit) first, target a clock speed of at least 4mhz, and utilize SPI Mode 1.
After you've gotten a working SPI connection, pass it into the Max6675::new(spi)
constructor. Ta-da! Your MAX6675 will be put to good use.
// first, define what pins you're connecting to
let so_pin = pins.("your miso pin").into_pull_up_input();
let cs_pin = pins.("your cs pin").into_output();
let sck_pin = pins.("your sck/clock pin").into_output();
// you may need a mosi pin for your device's SPI, though the max6675 doesn't use one.
// if so, just pick some pin that you're not using ☺️
let dummy_mosi = pins.("some pin you're not using").into_output();
let spi = device-hal::spi::Spi::new(
sck_pin, dummy_mosi, so_pin, cs_pin,
device-hal::spi::Settings {
// pick some settings that roughly align like so:
data_order: MostSignificantFirst,
clock: 4MhzClockSpeed,
mode: embedded_hal::spi::MODE_1,
}
);
let mut max = Max6675::new(spi)?; // your spi here
let temp = max.read_celsius()? // ayo! we got the temperature
Contributions
Contributions are welcome to this project! Since it's pretty small, feel free to submit a PR whenever. You can also make an issue - I'll likely get to it soon!
Help
Please don't hesitate to make an issue if you experience any problems.
If you can, please submit a hw-probe
report alongside any error messages or useful logs you have.
Dependencies
~1.5MB
~37K SLoC