From 61a57859080fbbdf1aa1b9cb8f834a11ae939f38 Mon Sep 17 00:00:00 2001
From: unicod <unicod@noreply.codeberg.org>
Date: Thu, 26 Feb 2026 23:17:58 +0100
Subject: [PATCH] UART5 fix, big TX buffer for large listing

---
 Core/Inc/uart5_it_cfg.h | 2 +-
 Core/Src/uart5_it.c     | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/Core/Inc/uart5_it_cfg.h b/Core/Inc/uart5_it_cfg.h
index 82ccf3e..aa0db4f 100644
--- a/Core/Inc/uart5_it_cfg.h
+++ b/Core/Inc/uart5_it_cfg.h
@@ -5,7 +5,7 @@
 
 
 #define  UART5_RXBUF_SIZE          1024
-#define  UART5_TXBUF_SIZE          1024
+#define  UART5_TXBUF_SIZE          8192
 
 
 
diff --git a/Core/Src/uart5_it.c b/Core/Src/uart5_it.c
index 154253b..7413193 100644
--- a/Core/Src/uart5_it.c
+++ b/Core/Src/uart5_it.c
@@ -76,11 +76,10 @@ void UART5_IRQHandler(void) {
          rd = (rd + 1) & UART5_TXBUF_MASK;               // new read index
          LL_USART_TransmitData8(UART5, Uart5TxBuf[rd]);  // send data byte
          Uart5TxRdIdx = rd;                              // Store new index
+      }else {                                 				// data buffer empty
+         LL_USART_DisableIT_TXE_TXFNF(UART5);            // INT disable
       }
    }
-   if (Uart5TxWrIdx == Uart5TxRdIdx) {                   // data buffer empty
-      LL_USART_DisableIT_TXE(UART5);                     // INT disable
-   }
 }