eculocate

commit 9137ddcbb1c39feca7acb99b60ff4fb673b22b47
parent e70bb99786eb44786bd4649a71995fb45a04c5fa
Author: Daniel Barlow <dan@telent.net>
Date:   Mon, 24 Nov 2025 21:20:46 +0000

add TPS decoding

Diffstat:
M
src/ecu.rs
 | 
18
++++++++++++------
M
src/main.rs
 | 
3
+++

2 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/src/ecu.rs b/src/ecu.rs
@@ -14,7 +14,8 @@ use log::{info};
 
 
 pub enum Measure {
-    Rpm(i32)
+    Rpm(i32),
+    Tps(u16, u8)		// millivolts, %
 }
 
 pub struct Ecu<'a> {
@@ -52,9 +53,12 @@ impl Ecu<'_> {
 	for b in &bytes[0..last] {
 	    sum = sum.wrapping_sub(*b);
 	}
-	let is_correct = sum == bytes[last];
-	bytes[last] = sum;
-	is_correct
+	if sum == bytes[last] {
+	    true
+	} else {
+	    bytes[last] = sum;
+	    false
+	}
     }
 
 
@@ -142,8 +146,8 @@ impl Ecu<'_> {
 	let table = self.fetch_table(0x11, &mut buf).await;
 	match table {
 	    [rpm_h, rpm_l,
-	     _tps_v,
-	     _tps_100,
+	     tps_v,
+	     tps_100,
 	     _ect_v,
 	     _ect_deg,
 	     _iat_v,
@@ -158,6 +162,8 @@ impl Ecu<'_> {
 	     ] => {
 		let rpm : i32 = (rpm_h << 8 + rpm_l).into();
 		callback(Measure::Rpm(rpm)).await;
+		let v : u16  = (*tps_v).into();
+		callback(Measure::Tps(v * 5000u16/256, tps_100  / 16)).await;
 	    },
 	    _ => ()
 	}
diff --git a/src/main.rs b/src/main.rs
@@ -68,6 +68,9 @@ async fn main(_s : Spawner) {
 		match measure {
 		    Measure::Rpm(v) => {
 			info!("got rpm {v}");
+		    },
+		    Measure::Tps(mv, percentage) => {
+			info!("got tps {mv} {percentage}");
 		    }
 		}
 	    };