From 2a135d02f1905c482dd5cdc30e5a669611ae9bab Mon Sep 17 00:00:00 2001
From: Nathanael Schneider <nathanael@lumenliquid.net>
Date: Mon, 6 Mar 2023 09:17:01 +0100
Subject: [PATCH] Bugfix for receiving non-DMX packets and flickering

---
 DMX G441/Inc/eth/artnet.h |  1 +
 DMX G441/Src/dmx_usart.c  | 17 +++++++++++------
 DMX G441/Src/eth/artnet.c |  2 +-
 3 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/DMX G441/Inc/eth/artnet.h b/DMX G441/Inc/eth/artnet.h
index 1c88770..c537937 100644
--- a/DMX G441/Inc/eth/artnet.h	
+++ b/DMX G441/Inc/eth/artnet.h	
@@ -7,6 +7,7 @@
 #include "arch/cc.h"
 
 #define ARTNET_FAILTIMEOUT 5000
+#define ARTNET_FIRMWAREV   3
 
 typedef enum {
     ArtCode_OpPoll = 0x2000,
diff --git a/DMX G441/Src/dmx_usart.c b/DMX G441/Src/dmx_usart.c
index 4a806fd..75024ee 100644
--- a/DMX G441/Src/dmx_usart.c	
+++ b/DMX G441/Src/dmx_usart.c	
@@ -290,14 +290,19 @@ static void USART_HandleIrqResponse(USART_DmxConfig *dmx) {
                 dmx->Usart->CR3 &= ~USART_CR3_DMAR;
                 dmx->Dma->CCR &= ~DMA_CCR_EN;
                 dmx->Usart->ICR |= USART_ICR_FECF;
+                dmx->BreakStatus = 1; 
             } else if ((dmx->Usart->CR3 & USART_CR3_DMAR) == 0) {
                 // check for 0 byte
-                if (data == 0x00) {
-                    dmx->Usart->CR3 |= USART_CR3_DMAR;
-                    dmx->Dma->CMAR = dmx->DmxBuffer + 1;
-                    dmx->Dma->CNDTR = 512;
-                    dmx->Dma->CCR |= DMA_CCR_EN;
-                    dmx->NewInput = 1;
+                if (dmx->BreakStatus) {
+                    if (data == 0x00) {
+                        dmx->Usart->CR3 |= USART_CR3_DMAR;
+                        dmx->Dma->CMAR = dmx->DmxBuffer + 1;
+                        dmx->Dma->CNDTR = 512;
+                        dmx->Dma->CCR |= DMA_CCR_EN;
+                        dmx->NewInput = 1;
+                    }else{
+                        dmx->BreakStatus = 0;
+                    }
                 }
             }
         }
diff --git a/DMX G441/Src/eth/artnet.c b/DMX G441/Src/eth/artnet.c
index 2b6e71c..422d95e 100644
--- a/DMX G441/Src/eth/artnet.c	
+++ b/DMX G441/Src/eth/artnet.c	
@@ -136,7 +136,7 @@ static void ArtNet_SendPollReply(const ip_addr_t *addr, u16_t port) {
 
     reply->Port = UI16_BIG_ENDIAN(0x1936);
 
-    reply->VersInfo = UI16_LITTLE_ENDIAN(2);
+    reply->VersInfo = UI16_LITTLE_ENDIAN(ARTNET_FIRMWAREV);
     reply->OEM = 0xFFFF;
 
     reply->NetSwitch = config->ArtNetNetwork;