rust/ina3221
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Configure i2c device and shunt resistor

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This commit is contained in:
Thomas Klaehn
2025-01-16 13:29:25 +01:00
parent bf5ee0ec78
commit 014b45d517
3 changed files with 8 additions and 8 deletions
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10
src/lib.rs
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@@ -17,11 +17,11 @@ pub struct Ina3221 {
impl Ina3221 {
pub fn new(slave_address: u16) -> Ina3221 {
pub fn new(slave_address: u16, i2c_device: &str, shunt_resistor: f64) -> Ina3221 {
Ina3221 {
slave_addr: slave_address,
i2c_device: format!("/dev/i2c-1"),
shunt_resistor: 1.0,
i2c_device: format!("{}", i2c_device),
shunt_resistor,
}
}
@@ -66,7 +66,7 @@ impl Ina3221 {
pub fn current(&mut self, channel: Channel) -> Result<f64, LinuxI2CError> {
let tmp: f64 = self.shunt_voltage(channel)?;
let res: f64 = tmp * self.shunt_resistor;
let res: f64 = tmp / self.shunt_resistor * 100.0; // No idea why multiplying with 100 but the result seems to be correct...
Ok(res)
}
}
}