use serde::Serialize; use crate::{command_handler::JsonBuffer, pins::HWRevPins}; #[derive(Serialize, Copy, Clone)] pub struct HWRev { pub major: u8, pub minor: u8, } #[derive(Serialize, Clone)] pub struct HWSettings { pub fan_k_a: f32, pub fan_k_b: f32, pub fan_k_c: f32, pub min_fan_pwm: f32, pub max_fan_pwm: f32, pub fan_pwm_freq_hz: u32, pub fan_available: bool, pub fan_pwm_recommended: bool, } #[derive(Serialize, Clone)] struct HWSummary<'a> { rev: &'a HWRev, settings: &'a HWSettings, } impl HWRev { pub fn detect_hw_rev(hwrev_pins: &HWRevPins) -> Self { let (h0, h1, h2, h3) = ( hwrev_pins.hwrev0.is_high(), hwrev_pins.hwrev1.is_high(), hwrev_pins.hwrev2.is_high(), hwrev_pins.hwrev3.is_high(), ); match (h0, h1, h2, h3) { (true, true, true, false) => HWRev { major: 1, minor: 0 }, (true, false, false, false) => HWRev { major: 2, minor: 0 }, (false, true, false, false) => HWRev { major: 2, minor: 2 }, (_, _, _, _) => HWRev { major: 0, minor: 0 }, } } pub fn settings(&self) -> HWSettings { match (self.major, self.minor) { (2, 2) => HWSettings { fan_k_a: 1.0, fan_k_b: 0.0, fan_k_c: 0.0, // below this value motor's autostart feature may fail, // according to internal experiments min_fan_pwm: 0.04, max_fan_pwm: 1.0, // According to `SUNON DC Brushless Fan & Blower(255-E)` catalogue p.36-37 // model MF35101V1-1000U-G99 doesn't have a PWM wire, but we'll follow their others models' // recommended frequency, as it is said by the Thermostat's schematics that we can // use PWM, but not stated at which frequency fan_pwm_freq_hz: 25_000, fan_available: true, // see https://github.com/sinara-hw/Thermostat/issues/115 and // https://git.m-labs.hk/M-Labs/thermostat/issues/69#issuecomment-6464 for explanation fan_pwm_recommended: false, }, (_, _) => HWSettings { fan_k_a: 0.0, fan_k_b: 0.0, fan_k_c: 0.0, min_fan_pwm: 0.0, max_fan_pwm: 0.0, fan_pwm_freq_hz: 0, fan_available: false, fan_pwm_recommended: false, }, } } pub fn summary(&self) -> Result { let settings = self.settings(); let summary = HWSummary { rev: self, settings: &settings, }; serde_json_core::to_vec(&summary) } }