From 8c8fe93d5b9d90882021a7e74744ff93c20b55e3 Mon Sep 17 00:00:00 2001
From: Erick Ahmed <engineering@erickahmed.com>
Date: Mon, 15 Jun 2026 14:09:51 +0200
Subject: [PATCH] Release CANrx semaphore in ISR

---
 Core/Src/canlog.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Core/Src/canlog.c b/Core/Src/canlog.c
index 94fc414..e48755c 100644
--- a/Core/Src/canlog.c
+++ b/Core/Src/canlog.c
@@ -85,6 +85,9 @@ void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef *hcan)
 
         // send errors like queue full via UART
     }
+
+    osSemaphoreId_t semaphore = (hcan->Instance == CAN1) ? xSemaphoreCAN1 : xSemaphoreCAN2;
+    osSemaphoreRelease(semaphore);
     /* CODE END */
 }
 /* END HAL_CAN_RxFifo0MsgPendingCallback */