From c7677e7c792ee8b6ca3e0f8046b50e015e1e820a Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <w.hottgenroth@krohne.com>
Date: Mon, 2 Nov 2020 16:54:15 +0100
Subject: [PATCH] more receiving

---
 cube/User/Src/mbusComm.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/cube/User/Src/mbusComm.c b/cube/User/Src/mbusComm.c
index 559c12f..17f1a5a 100644
--- a/cube/User/Src/mbusComm.c
+++ b/cube/User/Src/mbusComm.c
@@ -86,13 +86,18 @@ static void handleRequestEngine(void *handle) {
         frontendEnable();
         schAdd(timeoutHandler, handle, 500, 0); // 500ms timeout
         localMbusCommHandle->state = RECEIVING;
-        localMbusCommHandle->receiving = true;
-        // now waiting for the response, transitions are triggered by interrupt callback
-        break;
+        localMbusCommHandle->receiving = false;
+        // no break        
 
         case RECEIVING:
         logMsg("hre state RECEIVING");
-        logMsg("hre received octet: 0x%02x", localMbusCommHandle->receivedOctet);
+        if (! localMbusCommHandle->receiving) {
+            localMbusCommHandle->receiving = true;
+            HAL_UART_Receive_IT(&mbusUart, &(localMbusCommHandle->receivedOctet), 1);
+        } else {
+            localMbusCommHandle->receiving = false;
+            logMsg("hre received octet: 0x%02x", localMbusCommHandle->receivedOctet);
+        }
         break;
 
         case DISABLE_FRONTEND:
@@ -115,7 +120,6 @@ void mbusCommTxCpltCallback(UART_HandleTypeDef *huart) {
 
 void mbusCommRxCpltCallback(UART_HandleTypeDef *huart) {
     logMsg("mcrx: mbus received something");
-    HAL_UART_Receive_IT(huart, &(mbusCommHandle.receivedOctet), 1);
     if (mbusCommHandle.receiving) {
         schAdd(handleRequestEngine, (void*) &mbusCommHandle, 0, 0);
     } else {