From f6ea5f6ab947cc019b1c292e323d553737ba41cb Mon Sep 17 00:00:00 2001
From: smayzy <smayzy@smayzy.ovh>
Date: Mon, 2 Mar 2026 18:05:28 +0100
Subject: [PATCH] rewrite to prevent delay() lost data

---
 can/can.ino | 48 +++++++++++++++++++++++++++++-------------------
 1 file changed, 29 insertions(+), 19 deletions(-)

diff --git a/can/can.ino b/can/can.ino
index 6b04204..608b773 100644
--- a/can/can.ino
+++ b/can/can.ino
@@ -9,6 +9,15 @@ LiquidCrystal_I2C lcd(0x27, 20, 4);
 MCP_CAN CAN(CAN_CS);
 
 const byte NODE_ID = 0x01;   // Change to your Sevcon node ID
+const unsigned long timing = 500;
+
+unsigned long previous_time = 0;
+unsigned long current_time = 0;
+
+int16_t rpm = 0;
+int16_t ubat = 0;
+int v = 0;
+int ubatr = 0;
 
 void setup() {
   lcd.init();
@@ -48,27 +57,28 @@ void loop() {
 
     switch (rxId) {
       case 0x382 : {
-        int16_t rpm = buf[0] | (buf[1] << 8);
-        int v = rpm * 0.017;
-        Serial.print(v);
-        Serial.println();
-        lcd.setCursor(0, 0);
-        lcd.print("vitesse = ");
-        lcd.print(v);
-        lcd.print(" km/h  ");
-        delay(400);
+        rpm = buf[0] | (buf[1] << 8);
+        v = rpm * 0.017;
+        Serial.println(v);
       }
       case 0x209 : {
-        int16_t ubat = buf[0] | (buf[1] << 8);
-        int ubatr = ubat / 16;
-        Serial.print(ubat);
-        Serial.println();
-        lcd.setCursor(0, 1);
-        lcd.print("ubat = ");
-        lcd.print(ubatr);
-        lcd.print(" V  ");
-        delay(400);
+        ubat = buf[0] | (buf[1] << 8);
+        ubatr = ubat / 16;
+        Serial.println(ubatr);
       }
     }
   }
-}
\ No newline at end of file
+
+  current_time = millis();
+  if( current_time - previous_time >= timing){
+    lcd.setCursor(0, 0);
+    lcd.print("Vitesse = ");
+    lcd.print(v);
+    lcd.print(" km/h  ");
+
+    lcd.setCursor(0, 1);
+    lcd.print("ubat = ");
+    lcd.print(ubatr);
+    lcd.print(" V  ");
+  }
+}